Twinshock

Hello I have just bought a 349 mark 3 in bits.I have managed to rebuild most of the engine but im not sure how to line up the gear selector mechanism to the selector drum.What position does the drum start from and how do all the marks line up.Managed to get a parts book but there are no descriptions on how to set up the engine or ignition timing.If anyone knows where to get a proper workshop manual or could give me some advice on the above it would be much appreciated cos im dying to get on the thing. cheers.

I`m told someone has had some cast,does anybody have any info about this?

ebay listing When I saw this on the local Craigslist I thought it was a guy in the local club selling his bike. I mean, how many of these can there be? Turns out there were about three of them in the area. They were all bought at the same time back in the 70s, modified and competed with. I am trying to get the opportunity to photograph it for historical purposes. It was originally posted on Craigslist for $1500, but I think it will go a lot higher. As of this posting it's already at $1325 with 5 days left. He also has a M10 bitsa for sale, although it may not generate the same interest.

seems cool, but the engine looks overgrown in the small frame. http://cgi.ebay.com/ebaymotors/ws/eBayISAP...5&category=6719 not that I am into these, the Mont 23 look more to scale. k

Hello all! After yet another stripdown, I had the chance to have a superb practice after work on Friday on my Italjet. Although it didn't break down, and always started well, I found that if I came down a hill with the throttle shut off, when I came to apply power, there was no response for a few seconds, then it picked up. I tried small throttle openings coming down the hill, but with the less than perfect brakes, that seemed a bit too scary!!! I wonder if anyone has experienced this sort of thing before? I have had awful trouble with air leaks, but this time I made new gaskets all round, and have fitted new crank oil seals etc. My money is on the carb (Dellorto PH…

Hi I am starting a project with ex cotton works rider John Close the cotton mickmar trials bike and am looking for as much info on it or other minckmar trials bikes. I have been talking with Michael Martin who has given us lots of info but unfortunately he does not have and photos of the bike. We are wondering if anyone has a photo of the cotton mickmar that would help us in our project? Many Thanks Matt

A short Youtube film showing a brief history of trials and George Silk explaining his new gearbox-probably from the 70's?-a 4 speed with high and low ratios.Does anyone know of these Silk machines today?Engine seems similar to the Alta Gaunt Suzuki in the previous thread,the bike like a Montesa.

In my Cota 348 there's no kind of chain tensioner. However chain tensioners for 348 are available. Do I need a that one?

Sorry to carp on about this subject again guys but has anyone fitted the front exhaust pipe from SM yet and if so does it fit ok? ive got a full alloy WES system ready to go on! i understand ill need the front ex,flange? where can i get one of these from as i dont want to saw up my majesty exhaust system as its still good(but heavy!) dont want to waste

you know how it goes.......a friend of a friend knows this dude who has a trials bike fer sale,made out like a bandit three Tl125's for a song.....100.00 each.even managed to get one fired up tonight. My best purchase so far.

Hi lads hope you will be able to help me out. I have a Montesa cota 200 and have a bit of a problem with the gearbox on it. When riding up hill it has a tendency to jump out of gear, has anyone had similar problems on this bike and if so what was it. I had an Ossa that had a similar fault and it was the spring for the detent plunger had snapped, is there a one of these fitted to this bike or is it a different system. Any help would be gratefully received. Cheers Glenn

Nice weather and trials entertainment

Can anyone point me to where i can buy a replacement kickstart lever for my 1980 Mont cota 200, also needed a Petrol cap 'bung' type, Cheers, Vaughan.

Can any one tell me about the Mini Majesty frames. Are they all the same or are there differing types, eg early and late like the 250s. I know there are still some available from C Mawlem. I have a TY175 that I may convert. I liked the look of the one in Classic Dirtbike mag, and a nice one was for sale at Malvern last week. Any info appreciated. Thanks in advance.

Hello, can someone tell me, how much play/clearance/backlash between immersion tube and standpipe is permissible, or is usual (Betor-Forks). The 0.15mm feeler gage can be pushed between them well. And in another case the backlash is even so large, that the shaft seal does not fit any longer. Peter

Is it possible to strip these shock and if so how?, I'm only interested in getting springs off to give them a clean and refinish the bodies. Many thanks guys

Can anyone tell me the model number of the mikuni carbs you can use on the cota 200? Are there any other makes/ models you can recommend?

I have a couple questions with regards to the above. I am at the point of putting the transmission into the engine cases. When locating the selector drum should it be in neutral or a specific gear and how do I tell if it's in the correctly selected gear? Cheers John

What is the pre-mix ratio for an air-cooled Rotax 240 (SWM) ? In other words, how much do i need to put in to 5 Litre's of Optimax ?? Thanks in advance. Gaff.

I now have all the parts to reassemble my Cota engine, I am checking things prior to assembly and one thing I am not sure about is the kick start shaft. It appears that the assembly is as follows. The shaft is located inside the engine in a brass bush, a circlip and washer are next, and the shaft then goes through the engine casting where there is an oil seal. , the outer casing and bush are next followed by the kick start. My query is should there be a spacer after the oil seal, or if not what stop the shaft moving inwards, if this happens the cam on the kick start shaft will foul the case as is kicked over rather than correct position were the can hit the stop. Has …