9 Sept 2011

September Already 2

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9th September  55-60F, 13-16C, sunny, winds quite light. I seem to be nattering on more than ever. So I've started a second chapter for September. Just to avoid long downloads for those on slower connections. Nor do we want readers getting callouses from excessive scrolling, do we? ;-)


Love Lane needs a gentle trim. 

New, young Elms keep throwing untidy shoots but soon succumb to disease. 

Now it is the turn of the magnificent Horse Chestnut (or conker tree). The leaves are frequently turned prematurely brown by burrowing, miniature moth larvae. Clouds of tiny, white adults can be seen hovering around their victims. My wife has saved ours from the worst disfigurement by collecting every single fallen leaf and then bagging them securely. No easy task with such a huge tree! Composting doesn't work because they can overwinter in the heap.  

A cool start into a light wind.  I saw a large group of racing cyclists preparing for a training ride. Then I passed a long string of about 50 kids (8-9 year-olds?) all on their bikes with a couple of adult supervisors. They were climbing quite a hill so I went past at twice their speed. There were a few excited shouts but nothing derogatory.

None of our favourite bread in the shops and no stock (again) of the special offers as advertised. So I have to go out again after lunch. I was going quite well today. 20 miles. The trees are weighed down with fruit, conkers, acorns and nuts this year.


A relaxed back garden in a village backwater. Who knows what dramas have been played out here over the lifetime of the timber-framed farmhouse?

Ten more miles later, in bright sunshine, at 62F and light winds. I was breathless and drowning in my own lungs on the hills. My legs are stronger than my wind at the moment. Probably another 20lbs of shopping. The gear change has improved considerably with 9 gears. Perhaps the bar-end, lever ratios better match a 9 speed gear block? The new chain helps of course.

My allergy to the sunglasses seems to have passed. I have been rotating between my collection of cheap, supermarket, cycling sunglasses. Just to to see if I can produce another reaction. Though without success. It may just have been the heat of summer. I don't like riding without glasses because my eyes water so readily in the wind. The air is also full of flies in the hedge-lined, rural lanes which I usually frequent on the trike.


Mr Higgins insists on a leading role.

I saw the local red kite circling again today. Earlier, a sleek, little Sparrowhawk flew swiftly by. There is a tremendous range of birds of prey in Denmark. Oddly, there have been very few pheasants this year. Nor very many Gold Finches either. Woodpeckers have been more abundant even in our garden. They were attacking the Birches which I had trimmed recently.

I have just been notified that I have something special on the way in the post from the UK. Something I am greatly looking forwards to fitting to Mr Higgins. More details, and pictures, when the parcel arrives in a few days.


An old and strangely depressing, rural smithy.
I thought it might be a bakery. But a sneaky peek through a window showed anvils and tools still resting near the big hearth. Another building, nearby, with large sliding doors, has the appearance of a once-busy workshop. Now it all stands forlornly on a junction beside a main road. A forgotten way of life from when horses were the only way.

10th 65-70F, 18-21C, overcast, light winds. Instead of the forecast sunshine we had wall to wall overcast and rain until after coffee time. So I set off much later than usual.  Half a mile up the road I saw a couple of racing cyclists dawdling along. So I thought I'd better try and overtake them. Nearly two miles later I finally managed to catch them. By then I was panting like a traction engine and my legs were on fire!


A superb avenue of Hornbeam leading to an enticing arch.

The "racing cyclists" turned out to be a couple of very overweight young women. Who were strolling along side by side at 20mph on quite decent racing bikes. No obvious muscle tone in their legs to speak of. So they weren't even "proper" cyclists. (despite the XXL shorts and jerseys)  Yet they were nattering to each other as if they were out for a gentle walk. While I was breathless and exhausted just from trying to stay with them!


Contented outdoor cattle utterly spoilt for scenery.

They took to the cycle path in a village and one of them started zig-zagging for fun. As it was downhill just there and they were baulked by another cyclist I hopped back onto the empty road. I shot round the roundabout at the bottom as if my life depended on it. After that I was pedalling flat out at 23mph but they were still hovering in my rear view mirror.


A splendid, decorative, barn gable from 1855.

I was extremely grateful when they suddenly disappeared.  It would have been embarrassing to be overtaken again by these two "puddings" as I grew tired. Having warmed up I decided to plough on. Doing 20-22mph for the next few miles into a gentle headwind. Dropping occasionally to 16-18mph on the long rises. I arrived at the shops bathed in sweat as if I'd just conquered a mountain pass at 40C. My hair was literally dripping! Am I having fun yet? :-)


What a wonderful position to place a young sapling. 
Leaving it for one's descendants to enjoy the spectacle of maturity.

When I came out of the shop, some biker, bar steward had parked his huge, motorised, plastic, wheelie bin at an angle across the bike racks! It took a while to load my bag but the selfish moron still hadn't come out. So I had to move all the bikes just to get my trike out. Then put them all back again without scratching his plastic toy. I wonder how long it will take him to find his helmet? Which he had foolishly left resting on his bars. (Wicked chuckle)


Berries galore on a mature shrub!

Later, I saw a convoy of about 50 Morris Minors going the other way. From immaculate ex-factory standard to hotrod special they were all very smart. I didn't have time to take a photo.  Only 15 miles of outrageous fun and adventure.


More Hornbeam in a long avenue leaning drunkenly to the prevailing wind.

11th 65-68F, 18-20C, overcast at times, rather breezy. Very quiet. Not one cyclist out training. I saw quite a large deer in a field. It watched me go past and then went back to grazing. Later some hunters were circling a willow copse with their guns and dogs but I heard no shots. I'm feeling a bit tired today. 28 miles but I have to go out again. An eleven mile errand later in the afternoon.

12th  60F, 15C, overcast. Blowing a gale and getting worse. Left after coffee. Just made it home again before it started to rain. Only 13 miles.

13th  60F, 16C, overcast, heavy showers, hurricane force gusts. 13th? What a disaster!

The brand new Sram chain broke and ended up lying on the road behind me during a vicious, squally cloudburst. A rivet had pulled out of a side plate. The pin was still there but it was twisted at an angle. So it wouldn't go back in using the link extractor. Thank goodness I carry the link extractor with me for emergencies! Or it would have been a seven mile walk in foul weather!


The broken link.

I had to wait out the storm and the 50mph gusts before I could see clearly enough to remove another link. I haven't had a chain break since I was 16 years old and used a hammer and a nail to re-rivet chains. That's more decades and more miles and more chains, without a chain breaking, than I can easily calculate in my head....er...um... where's my calculator.. 48 years! Thank you, Sram! I should have listened to my brother and bought another make.


The same link showing the rivet completely out of line with the hole in the opposite plate.

What else? Oh, yes. No stock of another supermarket special offer. Makes yer spit, dunnit? 18 uneventful miles. I still have to go out again. If I dare. 10 more miles later on. Blowing even harder! Bottom gear and 5mph on the flat at times! The gusts were fierce! I must be getting fitter because I wasn't exhausted by the struggle.



I had to add the missing link back into the chain to avoid a crunch on the biggest sprocket and biggest chainwheel. [48x26T] It can be seen in the image above that the chain cannot be any shorter. (pictured after addition of missing link to bring chain back to former, nominal length) When the sky is lighter I will have to examine every link with a magnifying glass to ensure all the rivets/pins are properly set in the side plates.

In case there is any doubt: I do know how to break a link and replace it. I must have done it literally hundreds of times over the years. I use a link extractor to press the protruding pin back in. Through the roller and then the opposite plate until it is equal both sides.

Then move the chain onto the second position in the link extractor to only just free up the resulting link stiffness (from the riveting) without slop. Then double check the rivet (pin) is still equally protruding on both sides. Finally turn the pedals backwards and watch the lower jockey pulley for stiff links. This will make the pulley jump. The chain will not run smoothly around the small pulleys where there is a stiff link. I hope you were all paying attention? :-)



14th 52-57F, 11-14C, mostly overcast, steady rain, sheeting at times with gales. Fitted my new rear mudguards and stays. Thanks, Steve! Test ride to the shops and back after lunch. Great fun because the roads were streaming wet in places. Much more relaxing and safer not having to pull out around puddles and standing water. The mudguards and stays are totally silent in use even over huge cobbles. I have a new chapter illustrating the details:


http://pedal-trikes.blogspot.com/2011/09/higgins-mudguard-stays.html

Terrific gales coming back with no hedges for shelter and the rain was absolutely lashing down. I was on the 28T chainwheel in bottom and second gear trying to exceed 7mph on the flat! My usual 31mph free-wheeling hill was 13mph on the middle ring and pedalling hard. 13 miles.

15th 55F, 13C, sunny, breezy. Read all about it! The curse of Mr Higgins' new rain apparel causes severe drought in Denmark! Well it didn't rain all morning as promised! :-)


 I told you it was windy!

It looked like being a quiet day, for a change, but the wind kept building. The last five miles were straight into the wind and no fun at all. I wore my "predator" jacket over the matching road jersey and it seemed to work well against the cold wind. Not too warm going with the wind thanks to being a thin shell. Though the thinness makes the arms a bit "flappy" going downhill or into the wind. 


 Early TT tandem trike?

Mr Higgins observed that the dual action, downtube, indexed gear/brake lever is of an early form. He wondered if the cutaway saddles were really as comfortable as (say) a nice pair of Brooks Swifts? He had some very serious doubts about the responsiveness of shared steering in an emergency! 

He was, however, very impressed by the high carbon content, duplex, monocoque frame. And finally, that the disk wheels and lack of mudguards strongly suggested an early TT road iron. He obviously knows far more about these things than I ever will. I couldn't even tell if it was a delta or a tadpole! They all look the same to me. ;)

As expected the Higgins mudguard stays contributed mightily to bag stability on corners. So I no longer need a bungee cord to keep the bag out of the spokes! This is a truly valuable, additional asset because it avoids crushing delicate shopping. Which usually goes on top under the zipped flap.  

A group of school kids were fooling about on a main road as I passed. Running and walking in the path of trucks and buses which were probably doing 70mph! (in a 50mph speed limit) Dead kids walking! This is very unusual behaviour for usually, well-behaved, Danish kids. I expect they are "special needs". 24 miles.


16th September blogspot is messing about with the blog pictures. Clicking on a picture (for an enlargement) produces a gallery from the entire post against a black background. If you back click you are taken to another post! The image gallery window has to be closed instead. So now I have to delete the enlargement message at the bottom of 120 posts! I wonder how this will affect anybody on a slow connection?



Click on any image for an enlargement. Back click to return to the text.
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6 Sept 2011

September already?

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Autumn.

1st September 2011 54-60F, 12-15C, overcast, quite windy. The Danish summer of 2011 proved to be the second wettest since records began in the late 1870s. Many places had cloudbursts. With major cities suffering flooding.

The new chain kept jumping on the sprocket block (cassette) in most gears. The cassette must be knackered. I took it from a used wheel to save funds because the cassette looked brand new. This, despite the usual advice to change the cassette at the same time as the chain. I remember the same thing happening when I changed the chain last time. I'll have to start looking around for a replacement. With 9 gears this time. Max 27T to clear the Higgins axle loops.

Lots of the village bike shops have formed a chain (sic) and are selling online as well. This is a good idea if it means the local bike shops can survive.  With the continuing recession I imagine they are all struggling.

My legs were a bit tired today. Only 20 miles but a ton of shopping.


Look at this monster! Denuding the countryside of hedges and trees!

I know they grow back eventually but it takes years to replace what takes only minutes to destroy. Now the shelter belt on my favourite country lane is no more. I feel completely exposed. (even if I can see the distant sea for the first time)

The cabin is well steamed up. Which shows how cool 50F is at 8am. The driver was incredibly skilful. Cutting and placing the trees and bushes neatly in one smooth movement. The multiple, wide tyres provide low ground pressure. Which avoids damaging the structure of the soil as the machine works slowly and steadily along the hedges. I noticed the few oaks were being spared.


Village pond in a gale. It looks overgrown enough to walk on.
The resident ducks have leg muscles like Arnie's!

2nd  50-63F, 10-17C, rather cloudy, almost still, quite chilly at the start.  My legs were hurting even before I left the house. Probably thanks to an hour, or more, working on the roof yesterday. The still conditions inspired me to enjoy a slightly longer ride than usual.

It makes such a difference not having the wind roaring in my ears. It was perfectly quiet for much of the way. With occasional stints on the main roads to punctuate the peace. There is no way of avoiding busier roads if one wants to ride a loop. Even the birds were quiet with only a raucous Jay interrupting the silence. I saw what I took to be a Goshawk gliding over. Mostly white underneath with shortish but pointed wings.

I even found a quiet new lane snaking through hilly woods. The crumbling, Hesbjerg house was almost lost in the trees across the fields. It was odd how my legs only hurt when I climbed off. I hardly noticed anything while pedalling. As the wind slowly picked up I tried to maintain a constant 100rpm. This helped, slightly, to stop the chain hopping over the rear sprockets.


A sweeping bend in the woods marks the lowest point between two hills. 

The road surface was fast and perfectly smooth. It is always difficult to capture the atmosphere of a situation like this. I took half a dozen shots, trying different aspect ratios and zoom settings, but this one was probably the best IMO. 'I suppose you had to be there. The height of the picture is a vital part of tree-scapes. Yet the eye sees a much wider and taller view and can "zoom-in" to examine details. Which a camera cannot do without cropping out the whole scene. Perhaps I should try taking a video next time?



A special place which was very difficult to capture well.

The low, tree-covered mound on the right looked ancient. With a mysterious, clear space behind it drawing one into the scene. The woods on the left rear up at a steep angle. Letting the light in more than the camera can manage to portray.


A closer view. I tried to add a little more light to show the transparency of the scene as my eye saw  it. A timeless, magical moment. The flat, even light is very beautiful and avoids burning out the foreground. (well almost)

No luck with the 9 speed cassettes in the two bike shops I tried. Plenty more shops to try. The bike mechanic, in the last one, agreed that one should always change both cassette and chain at the same time. An expensive option if they last only six months. That's about £100 per year minimum! 34 miles and 15lbs of shopping.

I just remembered that I saw a couple in their 60s on well laden, touring bikes in Vissenbjerg. The gentleman's bike had seat stays which crossed the seat tube well below the seat clamp.  I keep thinking "Thanet" and I was right! A quick picture search for Thanet and it came up with the same unusual frame design. 

Now the sun has come out. Another 9 mile "errand" later on.

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I seem to be slowly attracting more followers to my blog as the total number of page views approaches 60,000. It is difficult to know what will interest visitors. The technical pages always enjoy the most page views according to the Statcounter website. Presumably most other visitors are just lost. Or looking for motorised trikes. Or adults riding children's trikes. 


Gentrified farmhouse up for sale.
Not easy to capture even with a wide angle lens. 

Meanwhile I am busy scribbling away at my daily ride diary. With absolutely no idea if anyone enjoys my clumsy pictures. Or hearing about my (apparently) endless suffering as I ply the empty Danish lanes between rural supermarkets.


Timber-framed village house. Probably an ex-smithy or garage.
Which has grown into a farmer's supplies.

No doubt I come across as an angry old fart as I moan about this or that triviality. It is all so frustrating, to me at least, because the tiresome problems I meet every day are usually so unnecessary. Perhaps I am just using the blog to let off steam about the day's minor irritations? Well, it works for me. :-)


Thatched cottage beside the village church.
Most churches are ancient. Often with original field stone giving way to later brick. 13th century is not all that unusual. Though most would be considerably smaller than they appear today.

There is often a good deal of hidden humour. Even if I don't always convey that message clearly enough. I lack the skill to be a deliberately funny writer. Neither can I put a smiley at the end of every sentence or paragraph.


A 3-lengths thatched farm on Love Lane.
(Danish: Kaerlihedstigen = Lit. trans: The love lane or path)

At school I would write pages and pages of essays. Only to have them thrown back at me as illegible. Which was true enough. Now I can write legibly I still haven't learnt the art of précis. What you see is what you get, I'm afraid. Warts and all. For those who enjoy my blog, on a regular basis, I am grateful for your support and interest. I'll try not to let my tiny, but loyal, audience down. Nor, hopefully, produce too much of a head wind. :)

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3rd 57-67F,  14-19C, bright overcast clearing to sunny periods, breezy becoming  windy. I rode to Odense to find a new 9sp cassette. I rode quite hard going there despite the aches and pains in my legs. Which soon went off. Again I was trying to stay above 100rpm. I had only one low gear which I could rely on and even that hopped noisily when I pedalled harder. I wanted to overtake some cyclists at one point and had to do 125rpm just to get past them! No other gears would let me pedal smoothly without the chain jerking!


A peek through the arch at the farmhouse beyond. 
B&B sign in blue. What a charming portal to another world!

At the fourth bike shop  I found a cheerful and knowledgeable young chap who had exactly what I needed. An Sram 9sp 12--26 with new chain included for about £50 equiv. The bike paths are all a bit narrow for a trike to overtake on and with the gears messing about it was a bit fraught at times. So I was delighted I didn't have to go right into the centre of town.


Pretty as a picture.
Note hand pump for the well.
Most rural houses had/have their own wells.
Now considered far too unsafe for drinking.
There was a long tradition in highly decorative front doors.

I think I'd better have a look at the condition of the Trykit 2WD pawls while I'm dismantling the rear axle. Just to check whether I need to worry about a re-lube or rust.

39 miles so far. I took some biscuits and a banana. With a box of apple juice to supplement the water bottle. So I really had no excuse for being a bit tired on the way back.

Later, I swapped the cassette, checked the Trykit 2WD freehub and pawls. Then set off for a test ride. 7 more miles with Mr Higgins stripped. The hills felt easy and I was doing 18-20mph both ways.

See the separate chapter on the dismantling and rebuild with pictures:

http://pedal-trikes.blogspot.com/2011/09/trykit-2wd-maintenance.html

Gunnar has very kindly forwarded this link to a series of pictures of a Bertram trike and some classic bikes: I wonder if the trike is Peter's? There can't be that many Bertram trikes about.

http://tinyurl.com/4536ae9

BTW: I can be reached at triker [at] nypost.dk if anyone wants to make a note of it.


Quiet reflection on past times.
Note the slender glazing bars in the windows.
Pine windows made from quality timber would last for centuries.
Today's tat is rotting inside ten years despite empty claims to heartwood.

4th  70-74F, 21-23C, overcast, windy. I removed one link from the chain but it is still hopping on the back sprockets when I try to sprint. Probably not enough chain tension. Gear changes are now very smooth and positive. I'll remove another link before I go out again.

The same old story with the wind. I cruise at 20-25mph going and then crawl back into the wind in a fairly low gear. It is "sticky" again. (high humidity)

Removed yet another link and then went shopping again in spitting rain. Chain still jumping. I weighed the shopping to see how much I was carrying on the second trip. 24 lbs! 26 miles total today.

PS. Our hero really really earned his environmental credentials today! On the inside of a sharp, blind corner, on a busy main road, an 18" long brown snake had decided it liked the look of the other side of the road. In no particular hurry, the snake was slithering across the tarmac towards the central white lines. I quickly jumped off the trike and parked it on the verge. Then stood in the middle of the road waving my arms to force traffic to avoid the snake.

Luckily there were only a few cars. The drivers looked surprised but amused by my presence in their traffic lane. I was rather wary that the snake was a poisonous adder/viper due to the clear zigzags on its back.  I was holding a bright yellow supermarket carrier bag as warning flag but I had nothing flat with which to quickly scoop up the snake. So I laid the carrier bag over it and picked it up very carefully to avoid crushing it. I then deposited its squirming carcase into the grass on the opposite verge. It promptly disappeared without a backward glance. Or even a nod of thanks. So? Where do I queue for my wildlife rescue medal? :)



Steve on his Higgins by the Thames

https://picasaweb.google.com/106910450808402649835/HigginsUltraliteOriginal

Steve, the owner of a splendid Higgins trike, (shown above) has kindly sent me the URL for an eBay auction of another Higgins trike:




I think it is supposed to be ultramarine but looks slightly green in this shot.


Higgins head badge.
The seller has mentioned the frame size as being 25".
Which is a bit of a surprise and limits its interest to very tall riders.


5th 60-65F, 15-18C, overcast, light winds. Chain still jumping when I stand up on the pedals! Grr! The chain can't be shortened any further. I had a nice chat with a women who was interested in the trike. 18lbs of shopping, 24 miles of heavy haulage up hill and down dale.

6th 55F, 13C, trees thrashing in 35 mph+ gusts, rather cloudy. Rain forecast.
It stayed dry but it was very windy. I almost managed to avoid a direct headwind but it was at 11 o'clock and 1 o'clock a lot of the time. The hedges were helpful where they existed but headway was a slow 8 mph at times on the small chainring. Another great load of shopping for 24 miles. I have now been told to stop weighing the shopping. Having been informed that a medal is not likely to be forthcoming. At least, not in the foreseeable future.  :-) 

7th 55-60F, 13-15C, overcast and blowing a gale. Heavy winds and overnight rain have given way to showers and more gales. I might sneak out after morning coffee.

Later it was still blowing so hard that I was literally hanging off the side just to stay in a straight line. As if was taking a continuous hairpin bend! Not easy on a main road with articulated lorries and cars passing at speed! Only an idiot would have gone out in such winds. The gusts were ferocious with trees bending double. Quite large branches and twigs were littering the roads and lanes! It was so exhausting I limited myself to just 15 miles. At least it stayed dry until I climbed off. Just grateful for having survived to arrive back at home unscathed. :-)

8th 50-56F, 10-13C, overcast, windy, pouring down. After thunder in the night and torrential downpours I was going to have a rest day. Eventually it stopped raining hard and our intrepid hero threw optimism to the wind. Setting off into big spitting drops. The bright arcs of spray from the back wheels can never be relied on to avoid the trike rider. It doesn't take much of a side wind to soak my shorts under such conditions! It kept raining for most of the next 10 miles. Where yet another supermarket had no stock (at all) of a special (one day) offer illustrated in their own weekly ads comic.

If there is a minister of consumer affairs in Denmark I'd be very surprised. Decades ago, in Britain, shops were heavily fined for having the wrong bar code price relative to the displayed shelf price. It happens all the time over here. Even special offers still have the old price shown. Presumably to limit interest to those who actually know about the offer. 

Swiping items repeatedly is commonplace and probably a nice little earner because many customers don't ever take the receipt. One has to check the receipt and change carefully before leaving the shop. Or be robbed blind.

I set off for another branch of the same chain 10 more miles away and found the shelf stock was out of date! Fortunately there was more stock hidden below the shelf. When something uniquely British comes up one has to stock up. Because quite often one may never see it again.
 
It rained on and off all the time I was out. With the roads saturated and streams and standing water in many places. Until I finally turned for home and stripped off in warm, 55F sunshine. Soon it was coming down like stair rods again! The Belstaff jacket did well considering all things. It kept me warm even though it was trying to soak through on the arms and shoulders towards the end. I was going quite well but not particularly fast. The chain is still jumping on steep hills and when pulling away! 24 miles.
 

 Click on any image for an enlargement.

3 Sept 2011

Trykit 2WD maintenance

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I had been running an 8 speed Shimano cassette but the time came when it and the chain were too worn to continue. I decided to invest in a 9 speed Sram cassette and matching Sram chain.

 

Replacing the cassette provided a handy opportunity to examine the Trykit 2WD freehub "innards". Just to see how it was coping with almost daily use. Particularly after a very long and hard winter. The Trykit 2WD free-hub and new half shafts were fitted exactly one year ago.


Poor old Mr Higgins is showing his age. The carrier clips and the bags, which previously adorned the seat stay triangle, have rubbed away the rather soft paint.

The Trykit 2WD freehub floats on its oversized, sealed, journal bearings between the two half shafts. The shafts (or axles if you prefer) are located in their own journal bearings. Removal of the outer bearing cups allows both Trykit axles to be withdrawn outwards. This leaves the inner bearings in place in their specially machined, bottom bracket cups. The freehub and mounted sprocket block cassette can then be lifted free of the Higgins axle reinforcement loops.


Here is a partially cutaway Trykit 2WD freehub borrowed from the Trykit website. Only one pair of the 3 pairs of right  side pawls and their internal ratchet are shown here. These would drive the right side axle only. There are six drive pawls in total per side. Twelve in total. Three more pairs of pawls and another support bearing are hidden on the left inside the remainder of the 2WD freehub. The drives to each axle are thus completely independent of each other in a remarkably compact, standard format, Shimano freehub. Allowing any Shimano/Sram cassette to be fitted.

The adjustable lockring allows a range of cassette widths depending on the number of sprockets. All journal bearings are rubber sealed to avoid water ingress. A common problem with standard cup and cone bearings typical of older trikes. The freehub body is machined from tough, hardened steel. Promising a very long life.

First I removed the saddle pin and carrier and then lifted the trike onto the work stand. Wheel removal from the Trykit axles is very simple. Requiring loosening the wheel-retaining, track nuts. Then a few gentle bangs on the side of the rim with my palm. Once free the nuts can be removed and the rear wheels slid off the axles. Leaving the nuts on but loose, saves the wheels from flying away if they come unstuck rather suddenly.

Having donned thick rubber gloves I removed the old chain (with a chain link extractor) and set it aside as a spare.  The worn cassette was released from the free-hub with a chain wrench and the splined, Shimano, lock-ring, removal tool. 


Pushing the journal bearings out of the freehub didn't take much effort. There is a push fit, sealed bearing at each end of the freehub. Then come the pawl carriers. With a light alloy disk separating the two, independent, pawl carriers. The bearings and their rubber seals protect the pawls and their carriers.


Though the original clear grease was blackened with use it was still in good (greasy) condition. In the absence of the recommended de-greaser I had to use petrol. This was used to wash all the components in a small glass jar only just large enough for take the special, freehub body. The freehub was carefully brushed through with an old toothbrush to remove any possible metal dust. The rest of the components had a quick bath in the petrol and were set aside to dry in the warm sunshine. All the components were given a final polish with a clean cloth.


Examination showed that there was no visible sign of wear to the pawls or freehub ratchets. They looked as good as new! As did the journal bearings. I reassembled the Trykit freehub components using thin, Castrol LMP grease. Trykit recommend a thin grease. I'm not sure whether the Castrol grease is thin enough but is very soft.


Image showing a trial assembly of the pawl holders in the freehub. Note how they are self-centering on the sprung pawls. Naturally, they need to be inserted the correct way around to take up the drive from the chain/ sprockets and transfer it to the axles via the hex socket in the pawl carriers. The ratchet teeth are actually, slightly asymmetrical which ensures the pawls won't be put in back to front.  One just has to remember that the freehub drives the pawls. (as indicated by the arrows)

The pawls and their springs are self retaining. So there is no danger of things flying away if the Trykit free-hub is dismantled. Everything was thoroughly clean and then well greased before it went back together. Such an apparently simple mechanism but a true work of  mechanical genius!


The new 9sp cassette was then fitted to the Trykit freehub. The 9sp is wider than the 8sp so there is not so much visible thread beyond the Trykit locking ring. Though I still used my thick, brass spacer ring. I think it looks smarter with the lock ring almost flush with the end of the freehub. A 10sp would not need the brass spacer ring but my bar-end gear levers are limited to 9 speeds. 


Front of Sram 12-26T, cassette showing the high gear, splined locking ring. This holds the 12T top gear in place. The sprockets are sandwiched between this ring and the rear locking ring. I torqued down on both simultaneously to ensure all was tight. The sprockets won't fall off or slip because of the splines but they don't want to be loose or they might cut the splines of the free-hub over time.


The Sram cassette sprockets are well cut away making for a remarkably light assembly. The designer went the extra mile and matched the cutaways to produce an attractive geometric arrangement. The rather "techy" cut-outs have their own character rather than being simple radiused arcs. I haven't had to do it yet but it looks much easier to clean than a Shimano cassette.

I deliberately made the chain one link longer than the last time to see if it affected anything. Removing another link (if necessary) is very easy with a modern link extractor. As usual I allowed enough chain to use the largest sprocket and the largest chainwheel at the same time. Not a normal occurrence out on the road but it offers complete safety and confidence in a hurried gear change when I suddenly need a low gear.

(Note: the overlong chain proved to be  complete waste of time and caused all sorts of problems! Make the chain the correct length every time! Wrap the chain around the largest sprocket and largest chain-wheel and bring the ends together so they overlap. Use one free end as your marker at the overlap then add one link. Break the chain at that point. Use a modern link extractor with an adjustable stop screw or you will damage such a narrow chain! I used a cheap, chain link extractor designed for normal 1/8" chains. The chain broke a couple of times while I was a long way from home! It was my own fault! I have now invested in a modern, Spectra chain link extractor) 

It reached 74F this afternoon. A bit warm for me standing out there in the sunshine.


The chain is much too long! This is on the smallest chain-ring. Middle sprocket. The chain still jumps in some gears. No chain tension!


View from the other side. Not how Shimano has saved money on the protective finish on the less visible parts of the Tiagra gear changer. I shall have to remove another chain link. Perhaps two.

I removed one more link but the chain is still jumping on hills and when I stand on the pedals. Still not enough chain tension. I'll take out another link before I go out again.


One link less: Better, but still not enough tension.

And yet another link but still skipping. I should have been more ruthless at the start. Setting the chain length to match the largest sprocket and biggest chain-wheel plus one link. Just allowing the chain to pass safely through the changer rollers without the chain going completely tight.

See important note about correct chain length above!

Also remember to tighten the wheel nuts properly after any maintenance work!  


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