Twinshock

how does advancing or retarding the ignition affect the feel of the bike at low revs? thanks matt

Hi there I'm rebuilding a sprite with sachs engine. On the underside there are two drain plugs, one with a normal bolt head, and one a different shape. Removing the 'normal' bolt to drop the gearbox oil, and there was around 150 ml of what looks like ATF that came out (looked very clean !) Quantity seems a bit small, and unsure of the other bolt on the underside of the engine. Any advice or help !?? Cheers John

Having seen a bit of the Manx classic/twinshock while I've been at the Manx Grand Prix I'm interested in what basics constitute a twinshock. Other than having two shocks! What brakes, frames, engines etc are allowed, size (as in fork diameter) or age limits. Anything else that should be considered before I start to make something that's not allowed. Even more interested after seeing some of the pit bike engine specials people have made which look very similar to the first bike I ever rode in a schoolboy competition. The rules for classic and twinshocks seem to be even more liberal than those for classic racing. Which I didn't think was possible!

Any results yet for sundays classic trial at Sheffield?

Hi All, I'm getting my 1971 Cota 247 ready for the upcoming vintage season, and I've got an oil leak that is driving me crazy. Both the gearbox and clutch drain plugs just refuse to seal (the 2 large flat head screws on the very bottom of the engine). I've tried fiber washers, aluminum washers, and rubber o-rings, with no joy. The fiber and aluminum washers continued to leak, and the o-ring just pushed out from under the head of the screw. The leaks are slow, just a small puddle after a day or two, but with no way to check the level, I have to change the oil before each ride. Any suggestions?

I did ask this before but i think it got lost at the back of another post When I go for a 'day light' MOT on my 250T will they make allowances for cable brakes? I can't compete with disc type brake performance

Well I have the crank seals on hand, and since I don't know when they may have been replaced last, I figure I may as well change them out. I'm waiting on getting the cylinder back from the machine shop sporting a new overbore piston anyway...... Since I've never replaced crank seals before I have a few questions please...... Is the counter flywheel [ on the clutch side ] nut reverse thread? ie; turn clockwise to loosen? Does the counter flywheel require a tool similar to the flywheel puller to remove? Next, remove the clutch basket? Now, pull the primary gear with a puller.......then remove the crank bearing cap and gasket........ OK, how does the seal come out, pr…

Saw this at the show Gaff, thought you may be interested. I can email you the images in larger res if you like, send me your address again. Sorry but I didn't get a picture of the other side and that 'beutifull' exhaust!!!!

Does anyone know where I can find a used yellow side cover for a 74 TY 250? Or maybe someone who sells a reproduction?

The Seeley needs some shocks. I saw an old thread on the subject where folk were singing the praises for Falcons. I was reading in the Classic dirtbike mag today NJB now do a Trikshock. There is a tenner difference between the two. The bloke at Falcon builds em to order depending on your weight etc and can make em up using a MX piston which makes the bike feel more like a mono apparently. Any thoughts ??? Thanks in advance PS Its the steel Falcons I am considering.

With 24 entries in the Twinshock class on sunday, almost double that of any other class is this a sign of the times and twinshocks coming of age? Great trial again with the sections almost playing second best to the ride round!

Greetings All, I've recently found a 1974 Kawasaki KT250 in reasonable condition for it's age, running well. I've been considering buying it as a second bike to my Cota 311, to ride the aircooled series. What's the typical value of these bikes these days? He is asking around half what I payed for the Cota, which was slightly better condition, but given it's newer that is understandable. Is this a reasonable amount? Does anyone have much information on these? Would they be suitable for riding sportsman and eventually clubmans rounds? From research the biggest problems seem to be poor ability on tight turns and easily stalled, but would this even be a consideration at th…

Another question to those who have ridden both.Were the SWM bikes of 1981-82 better than the last Sherpa T? Maybe just a matter of opinion,but if they were was it by a big margin? Did they handle better or have a better power delivery? I have only ever ridden one around the yard of a friends for about 5 minutes so I couldn,t really tell if it was loads better then my Sherpa T.

Years ago when Mick Andrews was riding for Yamaha he developed a fuel injected bike. Can anyone remember whether he rode it in the Scottish?

Hi There, Has anyone got a Honda TLR 200 for sale? Thanks Ash

last year I wrote an article about getting my SWM Jumbo road registered. I am currently getting another bike done and there have been some changes required by the DVLA. Specifically, organisations that provide dating letters, now require photographs of the engine and frame numbers. I have used Roy Bacon for my dating letters for the SWM's and he kindly contacted me regarding the change today. The updated article is now on my website.

Would a late Montesa cota 123 be under powered for a 13 1/2st rider?

Hi, I'm thinking of restoring an early 80's cota349, most people I talk to about 349's don't rate them for various reasons. Now I know there are more competative bikes out there ( Fantics, Majesty's, etc ) and I realise trials have changed somewhat, but will a well sorted "standard" 349 make a decent trials bike for twinshock type events? I'm not interested in faffing about changing frame geometry and footpeg positions to make it better. In 1980 Ulf Karlson won the worlds trial championship on One they can't be that bad can they? Any thoughts lads? Cheers.

Any good mods you folks know of for this bike? Engine (porting)? Carburetion (use the Amal for a papreweight?) Swingarm length? Neck angle? BRAKES? Fork valving? Footpeg position?

Can anybody advise me on somebody to strip my forks, re-chrome and plastic coat the sliders as well as do a spot of welding, (where the tension bar bolts to the slider, this has been snapped at some point in the bikes past and bodged). Gaff.