Twinshock

Theres is a Matchless G5 for sale locally, the erm 'lightweight' series.... Anyone trialed one, or even know anything about them? I could just use it as a roadbike if it's a complete non-starter...in the trials sense. Bit of a curio thing, pudding basin, goggles , white scarf 'n glass of milk. 1960 350cc single....the fake unit engine one...you know, the one with big bulbous engine cases...similar (same as, bar name tags!) AJS model 8. Or a G2 250cc with 350 AJS 8 engine if you wish.

Can anyone remember who made that Bantam engined bike that used the frame as the exhaust pipe? Probably in the late Sixties.

Hi I am looking for some original black VF mudguards in good second hand condition. My Father had a trials special in the 1970's, and He had four inch ones up front and looks like five and a half at the back. We still have the original mudguards, the front might still be useable, but the rear one needs replaced. I know these have been out of production for a long time so not the easiest to get. Any help will be very appreciated.

I need to remove the primary drive on my 1980 349 and found this thread, any other tips as it's sure on there tight! http://www.trialscentral.com/forums/index....y+drive+montesa seems freezer spray on the crank and heat on the gear is the way to go? Thanks Steve

I need to paint two Cota 247 bodies. I have done it in the past but results were mixed. I want to do this right and finish off with a very hard, fuel proof, KBS Diamond clear coat. But before I get their I need to use the right pre-coat and top coat. I would appreciate suggestions for both pre-coat that will give me a well attached base that I can sand to a good finish and then a sound top coat.

Hello Gents, I have a '74 TY250 in good running condition. I am in the process of going to pre-mix with it, and therefore removing the autolube pump. I pulled the pump today, and the pump drive shaft came out with it (see attached picture). So, it seems that all I need to do now is attach a block-off plate (I've studied this procedure, and I will be fabricating one) on the case, am I correct? Or do I necessarily need to pull off the engine side case and remove other bits, such as a gear, which was suggested in a previous posting. Not sure what gear that would be, although that member (Tony 76) had a '76 TY250, which appears to be configured diffe…

Hi, I'd be grateful for a lead to a bike orientated welder to put modern type footrests on a Sherpa in Scotland. Central belt or North east Scotland would be most convenient.

Hi One question, i know this might sound a bit daft, but what actually constitutes a "twinshock" ? Let me explain. Just look at the Cotswold Majesty for example or choose your own. Here is a bike which undeniably is a "twinshock" (it has two rear shock absorbers) but it was made this century. So are twinshocks anything with two rear shocks? Do they have to be manufacturered before a certain date? Must they be aircooled? When we say manufactured which bits do we actually mean? After all there are many aftermarket frame kits around. Some replicas of the originals, some of works frames, some just very light and tidy. You see where i am going with this is why couldnt…

I removed my decent tire off my GG and put it on my 74 ty with a tube.Will it work ok or just s bad idea.Sorta hard to find tube type trials tires these days plus I was trying to save some money.Have considered getting a tubless kit for bike so I can reuse my lightly wore modern tires but not sure what direction to go on this.

Hi there My son rides twinshock trials on a whitehawk 80 (and does very well, 8th at the weekend in the Scarborough 2 day in twinshock clubman !)- he also rides modern. However at 12 it's getting a little small for him (will definitely be next year) - however the step up to 125/175/200 is a bit much, I have a TL 125 and Sprite 150, both of which are a bit big. I've seen a 1990 fantic 80 big wheel, air cooled mono. Was thinking of putting a new rear subframe on and converting it to twinshock, as a next step ? Any thoughts or comments ? Cheers John

Anyone know the factory position of the cylinder rubber pieces on a 1974 ty 250? I should have taken a photo 3 years ago but did not. I've seen at least 3 different photos. Not a big deal but as a restoration I would like to make it factory correct. thanks.

Like about every other project I've done, somewhere between the process and reassembly, I've forgotten how the spacers go on the rear wheel. This diagram has me a bit confused. I reassembled in this order: Right side - axle , washer, cam adjuster, swingarm, spacer, backing plate Left side - hub/sprocket, spacer, swingarm, cam adjuster, washer, axle nut From this diagram, it appears both spacers go on left side with a washer in between. Can someone help me out? Thanks very much.

Thought this was a great thread over on another forum. For those that find neat twinshocks on craigslist but don't have plans to buy them, maybe someone here will find the info useful. I apologise if my US location offends anyone. I don't know the equivalent of Craigslist in the UK. I'll start. A bunch of Hodaka parts bikes in Pennsylvania. https://harrisburg.craigslist.org/mcy/d/hazleton-hodaka-dirt-bike-lot/6775910399.html

Hello- I am stalled in rebuilding a spare kt250 engine that was seized. I have rebuilt the lower end, and before I spend the money for a bore and new piston, etc., I want to make sure I can get a spark. I have the flywheel installed, and I have a CDI unit, but I do not have a coil. I'm looking for an aftermarket coil but I can't find out whether I need a 12v or a 6v coil. I know the lights are 6v, but the ignition coil on the magneto may not be 6v as well. Does anyone know which voltage coil I need, or maybe which coil specifically I could use? I found a couple of reasonable coils on ebay that say they are compatible, but I'm skeptical. And of course the used kt parts on …

Aftermarket footpeg location brackets and do it yourself footpeg relocating certainly is popular on vintage bikes currently used in competition. In general, how or what criteria determines the best footpeg front to rear location? Is the lowest possible position that kerps the fert safe best? While researching this, one company mentioned that going rearward with footpeg mounts is not always a benefit, it can reduce weight on the front tire and creates steering issues. Being specific, we will be modifying the setup on my riding buddies 72 OSSA MAR. The internet has many photos of these machines with footpegs anywhere from stock to 50mm x 50mm down. …

I picked up a totally original KT250 last Friday, something I didn't know still existed. With all of the TV shows where people doing "picking', I thought I'd never find another 100% original bike, ever. The bike was a one owner that was bought in 1977 from a shop in Effingham, Illinois. Bike has 2081 miles and has been stored for many years. Of course the tires are shot as well as the chain / sprockets. Plastic decent enough. Tank very nice with one small dent near left knee area. Has lights. Seat good. Piston was stuck, however. After a days soaking with PB Blaster, the piston freed and cycles nicely. Bore shows minimal wear and is stock size. I'm thi…

This week, my riding buddies new rear shocks arrived. These were OZO Pro Trials Rear Shocks from InMotion. The version he got were the silver colored ones with Shrader valves on the end cap. My question, and he has not heard back from InMotion yet, does anyone know how to alter the size of the mounting setup in regards to diameter. I have not personally tried to work on them, but he mentioned the oem spacer will pivot and rotate, but does not seem to want to be pushed out. Obviously asking before causing damage. The shock eye mount diameter is too small.

A look inside the OZO Pro shocks.

I did a search and some reading. There were some posts discussing using modern tubeless tires on vintage bikes / rims and how some owners have had issues with the tire dropping off the bead at the low pressures normal run. My 73 OSSA has an Akront rear rim. Unfortunately, probably on account of the slight ding in the rim from the previous owner, my Dunlop D803GP tire is dropping off the rims bead area. The oem Akront rear is a 1.85 width. Dunlop is suggesting a 2.15 width. I purchased a used OSSA wheel assembly from a different model than the MAR and unknowingly, it had the 2.15 wide rim. So, looking for opinions. Stay with the 1.85 wide rim and in…