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  1. Hello friends, the mechanical ignoramus here again from Brooklyn NY. please bear with me as im sure you are fed up with me asking for advice, but time spent on reconnaissance is seldom wasted and if there's no such thing as a silly question etc... having followed all the sagacious insights from you all in my last post about winter storage, i was a bit saddened to find out the in-laws shed where i now keep the bike floods when it rains heavily leaving about 3-4" of standing water for a day or two until it drains. i deliberately raised it up about 6" off the ground on plywood and put some thick plastic sheeting underneath so the bike isn't directly in contact with th…

  2. Started by Cheneycol,

    Hi, Can anybody tell me if the shock length is the same for the standard TY80 and the Big Wheel Whitehawk 80? It's got non standard shocks at moment and looking to replace them. Another question, does anybody run a 21" front wheel on theirs? It's had a 18" rear fitted but still got the 20" front usual tyre issues! Thanks.

    • 0 replies
    • 2.1k views
  3. Started by bsw,

    Hi My Sammy Millar seat/fuel tank unit has failed. The bike has been sitting for a few years with some petrol in the tank which has broken down , there is loads of yellow sludge in the tank. The thread where the tap connects had loosened and is leaking. can this be repaired I would think I'd have to cut the base of the tank to repair fully.

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    • 8 replies
    • 2.9k views
  4. Started by bashplate,

    Hey 175 guru's, just getting a 1976 up and running again. Starts first kick and ticks over like a swiss watch....but open throttle past 1/4 and it just dies out. Is this the classic "o" ring around the main jet problem, or something else. Carb has been stripped and carbie clean/airline blown out.

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    • 5 replies
    • 2.1k views
  5. Started by bondy,

    Hello has any 1 got any tips on how to put the ty 80 rear tyre on daft question am use to putting the big full size ones on but this 1 is very hard to get on I have it on the rim problem is I keep nipping the inner tube any help would be good thanks chris.

    • 2 replies
    • 2.2k views
  6. Started by bondy,

    Hello can any 1 tell me how the ty 80 forks get put together I have a rough idea but I want to know dose the tube get held in with the bushes? the rod is just held in with the screw hat the bottom dose the rod in any way get fastened to the tube? cheers,

    • 2 replies
    • 2.4k views
  7. Started by Bmonk,

    On another site someone has done some research and posted that numbers 525-000102 to 525-002751 are for 1975 models and 525-100107 to 525-102650 is for 1976 models. Can anyone confirm that this is correct?

  8. Started by bondy,

    Hello I have a TY 80 dose any 1 know if there' s a After Market Carb? TA

      • Like
    • 14 replies
    • 5.2k views
  9. Started by trialsrfun,

    Am assisting with the restoration of a pretty standard Yamaha TY 175 into a bike that will be ridden in trials, is the air cleaner/airbox perfectly ok as is or are there performance improvements to be gained by changes or even replacing with a different set up?

  10. Started by sbest,

    Hi, I'm new here, new to trials, but not new to motorcycles. I ride mainly KTMs, however I overhauled a 1979 CanAm 250 last winter. I use the term "Overhauled" because I have no intentions of a complete restoration at this time. I just want it safely ride-able. So I picked up a non-running 1978 TY175: It is in fair shape, complete, but with a few problems. Carb floods out and bike will not start due to flooded condition No air filter, ordered on Partzilla Oil pump off, but it does have the split cable, I ordered a single cable matching engine# and I have a 1979 frame as well, no other spares My switches…

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    • 6 replies
    • 3k views
  11. Started by thats_a_five,

    I have a '74 TY250 and it seems like the back end is a bit skittish. I saw someone had posted in one of the forums about modifying the rear suspension to match the dimensions of a Honda TLR200. I checked the measurements and it looks like the swingarm on the TLR is about 1.56 to 2 inches longer that the TY. I have seen a set of weld on extensions for the TY250 on eBay. Anyone have any inputs on this? Anyone extended theirs? How did it work out? Note, I am in the USA so no problems with scrutineers. The TY250 is mostly a buddy bike and occasional play bike, not a serious competition machine. Thanks.

  12. Started by johnnyjazz,

    Hello esteemed and revered friends! so i finally got the ol' girl all finished (74 TY250a), with many many thanks to all you on here i'm deep in gratitude. So I recently left my job where i kept/worked on my bike (i'm onto bigger/better things) but sadly lost the indoor semi heated storage facilities. so now its the in-laws unheated garden shed in upstate NY! seeing as the winters here are super cold and brutal and i have a few other things on, I've decided to put her away till next spring when i have a bit more time to enjoy her Ive looked at many vid's on line regarding winter storage and there seems to be some confusion about whether to drain the tank or fi…

  13. Started by bondy,

    Hello All this may be a daft question but on the top off the fork tubes just under the top yoke there is only what I can describe as a small groove looks like a Letter C or like a small thumb nail any 1 any idea why these are there? 1 each tube. ?

    • 4 replies
    • 1.6k views
  14. Started by RD4ME,

    Too cold to do much today so painted the muffler. Zipped around yard with it out a couple of times. More noise - no extra power.

      • Like
      • Haha
    • 13 replies
    • 4.3k views
  15. Started by bondy,

    Hello what you guys using for the TY 80 engine paint silver? cheers

    • 3 replies
    • 2k views
  16. Started by Pikeyboy,

    Hi folks, looking for some advice. im currently restoring a 1980 ty175 during strip down I noticed one of the fingers is snapped off on the clutch basket. Looks like a previous owner has welded up a small hole in the case from the outside not considering the damage it could cause on the inside upon start up. Each finger is badly scored and one has completely snapped off. The bike was running all be it quite rattling so they must have removed all debris and used the bike. My question do I need to replace the affected parts and if so where can I get them (tried EBay) many thanks all.

  17. Started by turbofurball,

    I got my TY175, now dubbed "Pinkie Pie", back in February but it took until last Friday 'till I got it back into one piece ... and even then only because I was entered into the Downland trial today! I didn't manage to finish* but did have a lot of fun, and I love this bike So, phase 1 has been Majesty-ised frame, lengthenned swing arm, steeper yokes, fatbar handlebars, Rock Shocks (very plush!), SM and Wes exhaust (very loud!), and lots of little fixed bits from where the previous owner didn't use any grease on anything. This has taken it from an unrideable turkey (zero back suspension action) to really pleasant to ride - once I got to grips with it it doesn't fee…

  18. Started by hop_sing,

    I need a new throttle cable. pre mix is gone and I want a one piece. Whats the best fix. New to the TY's, can I walk into the yamaha dealer and get one.

      • Like
    • 10 replies
    • 4.1k views
  19. Started by johnnyjazz,

    mechanical maestros, if you could tolerate yet another question from the ignoramus..... i realized at 160lbs (72kg) i'm on the border between 40 and 50 lb springs. maybe i should have got 50 lbs as i ride mostly road here in NYC but i went with 40lbs on the new falcons as that's what the guy sent me from the UK. i know the 40lbs are perfect for trials use however now methinks maybe i need to set them on max pre load as they seem a tad soft. im used to the thread/tool adjuster and the original step adjuster type pre loads, but not sure what the procedure is for these cir-clips? no doubt its super easy and you're all laughing, but i don't want to damage them…

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    • 11 replies
    • 3.3k views
  20. Maybe someone knows this one? I got the rebuilt cylinder back from Millenium with a chrome bore and new piston,(ended up being a Wiseco piston) but the 6 studs that hold the head on were not installed. The threaded holes are in fine condition and very clean, but can someone tell me what sort of chemical(s) should be used to keep the studs from backing off? I am thinking some sort of Locktite, but I am not sure. Also, the studs have more thread on one end than the other. Which end should go down?.

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    • 7 replies
    • 2.3k views

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