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Aircooled Monoshocks

  1. Started by pat64,

    hello folks my ty250 is fitted with a ngk bp5es sparkplug is this correct? cheers Pat.....

    • 5 replies
    • 2.9k views
  2. Started by andy m,

    Given the value/ prices TLR 250 twinshocks have been achieving recently I was wondering what the rare mono RG model would be worth. The white one with blue and red stripe. Completeley different bike and quite rare. I have been offered one that requires a couple of small jobs sorting. Possibly more of a trail bike maybe. Any ideas, or any users trialing one on here. Thanks.

    • 3 replies
    • 2.9k views
  3. Some of you must of encountered thie before. I need to change the rear wheel bearings of a Mecatecno Dragonfly im restoring. The trouble is that the long spacer inside the wheel that the wheel spinde slides through is fixed into both wheel bearings.It wont budge at all. Id normally tap the bearings out with a long screw driver from the opposite side of the wheel. With this wheel the screwdriver just slides through and there are no ledges to get a purchase on. Any ideas. I dont want to have to resort to picking the bearing apart . LOL

  4. Started by twinshockdude,

    take a look at this on ebay item no. 150022974895

  5. Started by 9bar,

    I've just bought my lad an old ('82ish) Suzuki TS125ER to learn on The main prob is getting spares We currently need - in no particular order Kick start (then we can get it running) Both side panels (we were quoted nearly

    • 3 replies
    • 2.9k views
  6. Started by steve,

    Can anybody help with jetting for a Mikuni VM26 for use on the Yamaha TY250R? The carb is new and was supplied supposedly set up specifically for this bike but it is way out. It'll barely run past idle it is SO rich, as if the choke is on. Supplied jetting is - Needle 5L8 Needle Jet 182 N8 Main 125 Pilot 35 Slide 2.0 Or at least I think this is right as I can't see the flipping numbers and had to photo them and zoom in as best I could.. Thanks. Steve.

    • 0 replies
    • 2.9k views
  7. Started by vintagecota,

    This has got to be rare, eh? kids Merlin

    • 2 replies
    • 2.9k views
  8. Started by mik60ish,

    Hi All I need to make a tee bar for a Yamaha TY 250 mono to strip the forks does anyone know the size of the hexagonal IE to suit a for instance (19mm) socket not sure of size just guessing? Cheers Mike

  9. Started by rickgoodwin,

    I have a TY250 that I planed on doing a disk brake conversion on, so today a buy a complete 1988 Beta Tr34 with a dead motoplat[no spark] was going to take the wheels and brakes off of it but i get to lookin at this bike and it is in really decent shape, as good as my TY anyways. i start thinkin maybe I should get a stator for this bike and ride it. I guess I could always find another front wheel for the TY. Had a beta Techno and it was a nice bike but Ive never ridden the tr34. Anyone else ride a TR34?

    • 3 replies
    • 2.9k views
  10. Started by esteve,

    I posted an enquiry about preparation of Honda Tlm200 and Tlm220 motorcycles for Trials on the Honda Forum but no response so far. http://www.trialscentral.com/forums/topic/54936-tlm200-and-tlm220-preparation-for-trials/ Can anybody on this Forum provide advice? Gracias Esteve

      • Like
    • 2 replies
    • 2.9k views
  11. Started by pat64,

    Hello all I have just got my first ty250 mono,an 1989 model (i think) iam trying to find out what the oil /fule ratio is can anyone help ? i will be using fully synthetic oil, also anyone know of any good sites to find out the specs of the 89 model ie carb settings, oil capacities, etc cheers pat.....

    • 4 replies
    • 2.8k views
  12. Started by ady witting,

    Hi, I have a TY250 mono with a pro monty front pipe and sammy miller back box and rebored to 261cc with wossner piston, just wondering if there is a carb upgrade from the original as can not get it to run right always running on when it gets hot tried cleaning carb out I have left jetting as it was. If there is a carb upgrade where to buy one from

  13. Started by stickymint,

    Hi,I have recently bought a TY250 mono as an introduction into motorcycle trials, I decided to rebuild the bike from scratch and upon stripping the engine it has thrown up some interesting modifications which I hope someone could enlighten me on. The piston is I've been told is an IT 175 at 66.5mm diameter, the rod is different, Its a 214 but possibly same length as standard. The barrel is 10mm shorter than standard and the crank throw is shorter at around 63.5 in length. There seems to be quite a decent porting job in the barrel as well. It also has a lightened flywheel. The frame no is 15. Someone told me this is an early conversion by John Shirt to build a more revvy m…

    • 2 replies
    • 2.8k views
  14. Started by europa,

    I am currently rebuilding a JCM 240 Europa - one of the Streit models - I think 1989. I dont appear to have the correct rear brake set up. does any one have a parts diagram or photo of the correct caliper & cylinder? unit I have is a Brembo but the hose looks short, Cylinder mounting screws are 6mm - holes in frame are 8mm. any of you guys have any experience of this?

    • 1 reply
    • 2.8k views
  15. Started by grizwald,

    Hi all, Could members advise the best gearing option for a TY250 mono (standard motor ) run solely for trials use?

    • 2 replies
    • 2.8k views
  16. Started by agp244,

    i have just bought a frame for my ty250 mono it is the later type R frame without all the extra lugs and has the cradle for the rear shock remote. i have noticed the footrest brackets are different on this frame does anyone know where i can obtain some decent wide footrests for this model. Alan

    • 0 replies
    • 2.8k views
  17. Started by jas,

    What are you running for gearbox oil in your TY250 or 350?

    • 1 reply
    • 2.8k views
  18. Started by spawtydawg,

    Hi, I'm thinking of having my Pinky shock serviced, can any one recommend someone here in the UK ? Thanks.

    • 2 replies
    • 2.7k views
  19. Started by ady witting,

    Hi does any one know where i can get a 0.75mm piston kit for my Yamaha TY250R Mono from becouse genuine yamaha 0.75mm out of stock now. cheers

    • 1 reply
    • 2.7k views
  20. Started by pitley,

    Anyone here know the correct oil capacity of a pinky fork ?

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