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  1. Started by dwb5151,

    Hi I am just wondering is their an official dealer for the new Yamaha trials bike. Their new 4 stroke looks great but I never see any body riding it in Northern Ireland. Many thanks Dw

      • Like
    • 7 replies
    • 5.8k views
  2. Started by nigel dabster,

    Does anyone know if a 39 rear sprocket is available for a 6 hole ty hub?

      • Like
    • 2 replies
    • 2.1k views
  3. Started by gasserrobinson,

    Hi All, Got a bit of an issue with my TY175 forks (previous owner largely, seems to have been a bit of a butcher) anyway, long story short i've gone through everything and restored the bike, but having issues with the forks topping out. I have rebuilt all and assembled as per the 'fiche but when I try and 'hop' the bike the forks top out completely. What fork oil are people using and how much? Or is there something else that I should be looking out for! Thanks, T

      • Like
    • 8 replies
    • 6.5k views
  4. Started by retromlc,

    Hi everyone,my first post i have a TY175 circa 1980,I bought it from a dealer up north and it looked ok. I have done a couple of trials on it and it's ok,I'm a comptete novice but have an enduro background,after the last ride I washed it ,not jet washed and it re started but was a bit fluffy on the carburation.I stripped the carb about a month later and nothing was obvious but it wouldn't idle and rev cleanly at the bottom,it ran ok in higher gears if a rode it faster. Anyway the other day it wouldn't start so I put fresh fuel but wouldn't start,,the plug smelt of fuel so i put the plug against the cylinder and turned it over on the kick starter and no spark,i don't h…

      • Like
    • 7 replies
    • 3.8k views
  5. Started by johnboy999,

    Hi all , Can someone please tell me how soon before TDC the points should open and the gap to set them, Weak spark and I am unable to see them opening at all, Thanks.

      • Like
    • 5 replies
    • 3.2k views
  6. Started by pacificnw1,

    I'm out of ideas... Recently restored TY 250 runs and rides great until I run it fast - 3/4 throttle for a minute or two. Then it acts like it's out of fuel and shuts off. A minute later the thing fires and idles like nothing happened! So - new fuel delivery system complete - everything. Clark fuel tank and petcock, fuel lines, Micunni Carb, Boysen reeds and spacer - SAME thing! So - electrical. In resto I cleaned the mag case and replaced the harness from the Ignition side to the new coil, wire, cap and plug. I'm a competent solderer and again, it works great unlil it gets hot. I run 45:1 and have the oil pump blocked and line ports plugged. I have two guesse…

      • Like
    • 7 replies
    • 3.8k views
  7. Started by bikestat,

    does anyone know where i can get one of these tanks from please

    • 1 reply
    • 2.6k views
  8. Started by ric h,

    Just curious what this little eccentric does.Under the left side engine cover,held tight with a locknut.Part #20 in this diagram.Anyone know how this needs to be set properly? I haven't had a problem with the clutch.Just getting to know the bike better. 1976 model.

    • 1 reply
    • 2.7k views
  9. Started by doogle,

    I have an excel tubeless rim I wanted to use for my 175. It's the montesa type with the flange for the spokes to go in. I can't find anyone to build the wheel as no one can seem to source suitable spokes with the adjuster in the middle like a Mont. I am sure people have done this. Can anyone help? Cheers Dave

  10. Started by ajock,

    Still running orginal mikuni, looking to replace it. have seen a few ty's with dellorto 26. any ideas. Thanks in advance.

      • Like
    • 3 replies
    • 2.7k views
  11. Started by peemster,

    I have a 1980 175 and when I stripped engine there wasn't any shims in it. Are they meant to be there?

    • 3 replies
    • 2.3k views
  12. Started by retro,

    Hello, Can someone tell me how much & what weight fork oil to use in my TY175 forks? Thanks Much!

    • 1 reply
    • 4.7k views
  13. Started by swampystu,

    Hello just picked up this project. Needs a bit of work, anybody know how to tell the year.

  14. Started by jbird,

    Howdy; I would like to gear down my 74 TY 250, anyone got experience with this.

      • Like
    • 6 replies
    • 4.7k views
  15. Started by james n,

    Looking to buy a new set of brake and clutch levers and perchs for my 74 ty 250 I am useing the stock yamaha cables. I have had 2 msr raptor levers, really liked them but they are expensive and brake just thinking about falling. tried the cheap imports and had to modify them to fit the yamaha cables and they break to easy. any suggestion. thanks

      • Like
    • 6 replies
    • 2.7k views
  16. Started by brewtus,

    Been posted elsewhere on the web (ADV Rider), but we had so much fun this weekend I had to share here! Pics from the Mountain West Vintage Trials Association's season opener last weekend - Awesome weekend. The League will be back!! What fun did you have on your TY80?

      • Like
    • 9 replies
    • 3.3k views
  17. Started by andyhall,

    Hi, i have recently purchased a ty250 with gold rims and white subframe with red fork sleeves.....from photos it looks like an 88 but the frame plate indicates probably an 85. frame plate 59N 001661. I suppose that the frame may have been resprayed/painted although the decals look original. The bike seems quite under powered from what i remember from 250s from my youth and seems to have many false neutrals...?. However i like it a lot. Am brand new to trials although have been riding 35 yrs....I understand it is 50-1 oil mix......?

      • Like
    • 7 replies
    • 3.7k views
  18. Started by garyo,

    Hi, i am using my ty 125 on the road, what would the best combo sprockets be? Currently it had a 17/37 combo, and wont go more than 40 mph and combletelly flat, can manage to get into 5th gear but not in 6th.

    • 12 replies
    • 4.8k views
  19. Started by shipdamite,

    Hello, Did my first trial in almost a year at the weekend and really enjoyed it ... my TY is spot on, aside from one annoying characteristic - it is light on the front and tends to rear up on hill climbs etc. I fitted the twinshock shop triple clamp which helped a bit, as did raising the bars 20mm ........ Not mad keen on doing the swing arm extension modification. Any other tricks to overcome this? I tried my Mates Bultaco, and that felt really planted and only raised the wheel when it was intended. I have put quite a bit of effort into getting the bike right, but this fault really has me thinking that I need a different bike. cheers Andrew

      • Like
    • 12 replies
    • 4.4k views
  20. Started by dannyboi,

    Hello, can anyone tell me where I could get piston ring(s) for my 88 ty 250 mono? Thanks

      • Like
    • 3 replies
    • 2.5k views

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