Twinshock

Restoring my Rickman hodaka , I just purchased webco cylinder and head , stamp 123cc .. wanted piston rings new preferred . fits this package requires 11or 12 mm wrist pin, ruffly , 55mm piston any info Have contacted hodaka parts co. No reply , I noticed there competing in brothers racing Mid west , USA , was no reply to my email ,, I painted this tank , baby blue and other parts , a possibility , head will fit , on the other cylinder , , upon ,, to find a matching piston , working on E engine assembly , for matching engine , frame , , to make it original , ? More collector valuable , , cheers

hi all. a friend of mine has a honda xr200 rolling chassis that he wants to convert to a trials spec. has anyone done one that can offer any practical advice? any info at all will be appreciated. he has a single fiberglass seat/tank unit from a tlr250 already, other than that its a blank canvas. thanks, paul.

Hi does anyone know what size copper exhaust gasket i need for my montesa 247s. both bikes need them as currently they have none. Any advice greatfully recieved. Thanks in advance

HI, I've cleaned the carb and freed the slide which was sticking. Spark looks strong but appears to be flooding as its wet when i pull it out. It wasnt running well before i cleaned the carb, it seemed to kick back a bit and would start but only for a moment. I was thinking the woodruff key may have sheared. Any advice welcome.

I need to replace my rear mudguard on my late model MAR, the one with the angles dampers, I am seeking an original or a suitable replacement without resrting to a typical mudguard. If there is any onfo on whom can supply or sell me one, please. Thanks Mark

Ty 80 red frame numbers on frame and engine 451-406876 dose any one know the age

Hi , can someone measure their side stand , the foot pegs have been lowered on my 348 , so looking to fit a universal one thanks

Hi everyone, I own a MAR with a Whitlock frame, it was featured in a certain magazine a couple of issues back now (the bike was the blue one). I was wondering how much everyone thought it was worth now days, what with twin shock trials becoming very popular and the fact that there was only 30 of these models ever put together. I literally have no idea how much it would be worth, no intend to sell just interested to know. Cheers

Hi all just come back from wrighty's show and i found a cooper bantam frame in very good condition it also came with a pair of tank stickers i was told by the seller that it was a very small concern in the late 60s early seventies . Has any one got any info at all on these bikes ??? A picture would be amazing !! .I was thinking 32mm MP forks were used ?? not sure on hubs maybe the REH used on the wassell with chrome dunlop rims . Got a very neat little alloy tank painted white with it as a job lot not sure if its the original or not ??? any help with info would be amazing . Thanks in advance Martin

Never rode all twinshocks , just curious what is the best twinshock bike frame geometry/handling wise.. Yamaha TY Suzuki Beamish Fantic 200 Kawasaki KT Bultaco Montesa Cota Ossa MAR Honda TL may be more. you can suggest . Regards

Can anyone please help me try and locate parts for my cmt 250hiro mk3.Just starting to restore her and I’m finding it hard to get parts.

Gearbox Shims on a Mont 349

I know it’s been done before ... but an old italjet 100t frame, new 144cc engine ....£600 all in not a bad result !!

I have a little slice of land with some good riding potential and want to make my B25 really quiet with minimal loss of low/mid power. I started to build a glass packed silencer for behind the seat stay tube (for stock header) and now see resonators being used before muffler. I would like to hear something about your experiences. I can bend and splice tubes so building from scratch is no problem and I would rather get this done before paint, Let me (not) hear what you have! Thanks, Frank Untitled by barnstormerbikes, on Flickr

I scored a BSA Victor with a B250 motor and figured I would build a trials bike out of it. I brought the head angle in, brought down the upper shock mounts etc. i am up to the point to set steering stops. My forks (old betor) have 70mm offset and my tank is really narrow. Would 90* be a good point to set stops? I can make thicker bumpers later. thanks. Frank

How far are you allowed to mod a twin shock before it is classed as a special . Has anyone be banned, and what with. PS not talking pre 65 its just bonkers.

So, my 349's front drum brake is a bit of an issue - never caused problems in the UK but it's a bit of a liability here when you can have long steep descents that go on and on. Basically, although it's clean and the shoes have lots of decent looking material left on them there's no bite (more of a gentle slowing suggestion), and the lever action feels super spongy despite a new cable. Before I think about getting new shoes, are there any tricks I can try to wake it up again?

I am rebuilding a ty250a.I have only been riding trials since spring of 2018 but figured I would share my rebuild for all to injoy (or laugh at).I ride a 2015 GG txt pro but like vintage bikes.The ty250 was my 1st motorcycle I had in 1976 when my father purchased it for me.The deal was I would work in woods taking down tree's to pay him back.I had no idea it was a trials bike but rode the hell out of it.

Hi All, I would like to replace what I believe is the original 43 yo needle and needle jet in my KT, I have found a NOS needle (5D1/part#16009-066) on ebay but cannot find a needle jet (series 172 O/8 or maybe 0/8) part #16017-087, hard to tell if it's a "O" or "0". I can see from various Mikuni websites that the outer dimensions of the readily available series 182 needle jet are the same as the Kwaka's series 172 jet, but I don't know if the internal dimensions the same. IE: Does series 172 O/8 or 0/8 = series 182 O/8 ? I also realise that if I find a modern day Mikuni Needle Jet that matches the old version that I will also need to upgrade the MJ to a newer …

Recently acquired a 1983 CanAm 320t / Armstrong-CCM 320t, (this is a Hiro engine bike) which I hope use for twin shock events next year. I need some parts as listed below, any help locating is appreciated Front and rear brake shoes Fork seals Front and rear sprockets Engine seal kit Gasket set Air filter Clutch, front brake and throttle cables