Classic Trials

Does anyone have advice on any inlet manifolds or adapters to allow throttle cable to enter without trying to bend round crossbar, must be some method out there ?

Hello! We have recently had a family member pass away, who had an old BSA in the corner of the garage. I'm trying to find more information about it as I don't really know a great deal about BSA and whether to restore it. I'll attach photos. I can't seem to see much info about the engine either to figure out what year it is. The number on the engine itself is C15T 179? Any help would be greatly appreciated!

I just bought a trial bike a Bultaco Sherpa 350 but I don't know what type of Bultaco it is? The tank is strange and if I compare with other tank from the opening is not in the center of the tank. I have the paper and the bike build is 1975. ON the last picture (yellow), what is this part? Thank you

Does anyone know where I could source a pair of Cheetah fuel tank decals?

https://todotrial.com/nuevo-campeonato-del-mundo-de-trial-de-veteranos/?fbclid=IwAR1k6ve8WwhLcrD1MgZmdxu42HE5BKEh4Y3phwJqRGcbYfVtETQZTsjgQT4 If only it was true ....

British bikes. What counts as being a Classic British trials bike? I regularly speak to people who ride Bantams fitted with Yamaha? pistons. Clutches that belong in Yamahas. Shocks and levers etc from China. Greeves bikes that were completely manufactured in the 21st century! How about a C15 with a Honda motor fitted? Or, an old C15 or Cub engine fitted into one of those brand new, light weight vintage style frames? Where do clubs draw the line for entries into Classic and/or "British" trials bikes classes? Any thoughts?

Hi, I am after an alloy barrel for my trials cub. Can anyone recommend where is the best place to find one? Cheers, Henry

Just acquired a Dalesman, does anyone know how the swinging arm releases? I have removed the near side but with threaded spindle but the other side won’t budge. Not sure if it’s threaded or just needs a drift to get it out. also does anyone knywhere the frame number is? does anyone have a manual or handbook? thanks Dow

I'm going to reduce castor angle on my farm bike project, so...I entered current steering geometry specs into an online calculator (I'm lazy and its quicker) but the trail was a lot more than OEM spec when calculated. I fiddled around a bit and it seems the manufacturers figures are based on having no tyres on rims. This I understand would take out the tyre height variance of different products but seems its not a real world measurement. Are all motorcycles measured in this way for spec sheet? My bike is completely disassembled so can't check for sure now. I don't want to alter frame until I know I'm comparing apples to apples.

I've recently bought a nice original old Sprite trials, Villiers 37A powered. Anyone tell me the location of the frame number? I'd like to try and get an age related registration on it if possible, any advice on how to get one would be appreciated.

Hi all, I'm currently converting an old Honda farm bike to trials form. The bike is a monoshock but as the linkage assembly was badly seized up and made from steel I had to cut it to disassemble. The shock unit is also quite heavy so will be chucked away. Some advice wanted please; what would be a good setup to use/modify? I was thinking direct mount so as to avoid clearance issues with linkage. Cheap and commonly available would be ideal. If I used a shock designed for linkage, would I get enough rear wheel wheel travel? I know there's lots of variables: mounting position relevant to swingarm pivot, swingarm length, angle of shock etc. I'm thinking a…

Hi finally we started ! here pictures and results of ProPark Genova www.infotrial.it here with my fat 300 ?

Hi Guys, I hope you can help this newbie. I have just purchased my first classic trials a montesa mh200.. it is in good condition and had a lot of money spent by the previous owner. We took it out yesterday to put it through it paces and although it has started first kick every time up to now it ceased to run mid way through our session. I had a look today and it seems the plug was very wet and not sparking. I cleaned the plug and it briefly fires then its soaking wet again. I have stripped the carb 4 times today to double check there is no blocked jets etc and the float needle seems to be working correctly. I feel it could be ignition related as the spark …

Im about to rebuild my wheels with new tyres and was wondering what people do when they run tubes. I have Michelins on ally rims but not tubeless so not sure if I should run rimlocks or not.

Looking for advice on mudguard fitment on Betor forks that have no mounting brackets

Has there or is there anything currently regarding an EVO class in trials? Comparing to MX, EVO is anything pre 90ish, and superEVO pre 97ish. EVO i guess would be covered by what we call air cooled mono, but once bikes went water cooled theres nothing really to separate out another class. With 90% of people competing in modern trials on a sub 10 year old bike thats 20 something years of bikes kind of without a class, every bit as large as TS and larger than ACM and pre65. Will there ever be a requirement for another "classic" grade, or does trials just not require as many grades as MX? When/if that time comes, what do you think will be the cutoff, since theres been no bi…

Hi All What is the most popular sealant for crankcases etc on a Villiers motor. Its 40years since I last did a two stroke. Thanks in advance.

I have bought a new fuel tank, with a screw on aluminium cap. However, it came with no gasket to go between the cap and tank. The original tank has a gasket, which looks like silver card. What material to use to make a disc about 43mm diameter, 3mm thick? Thought about using part of a wellington boot. Ideas? Thanks in anticipation.

Hi, I'm sorting out a 1967 500 Triumph twin engine in a B25 type frame. There isn't a lot of room for messing about with the primary chain tensioner at the back of the chaincase. I've seen passing references to fitting a C15/B40 slipper type tensioner in the primary case but can't find any real info on this. Is this a possibility or an old wifes tale??.

Good Day, Just starting a Villiers 6e 197cc rebuild. I haven't done bottom end on a Villiers before. Can anyone throw some light on separating crank? Will I need the services of an engine specialist? Will probably have more questions as the project advances. Thanks in advance.