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yamty175

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  2. 175 Bore Clearence

    in Yamaha

    Posted · Edited by yamty175

    TY175 Owners Manual: Piston clearance 0.040-0.045mm or if you're watching in black and white 0.0016-0.0018 inches. This is as new, it doesn't give a minimum or maximum :thumbup:

    Jon.

  4. TY175 S/A Bushings.

    in Yamaha

    Posted

    Had to do the hacksaw trick to remove the pivot bolt from the sleeve on the swinging arm. Anyone know the best way to get the old bushes out? Soak them in some noxious liquid, gasket remover, acetone etc? 1976 TY175.

    Thanks, Jon.

  5. TY250 Speedo

    in Yamaha

    Posted

    On my TY(175) the speedo cable is held in by a spring clip, then the cable just pulls out.

    The drive is held on by a circlip (snap ring) in the centre of the hub. It may be greasy/dirty in there so may be hard to see.

    Dunno if the 250 is the same, hope this helps.

    Jon.

  8. TY175 Coils.

    in Yamaha

    Posted

    Has anyone recycled their lighting coil as an ignition source coil?

    Reason I'm asking is the PO ran without a flywheel cover gasket and everything on the stator plate looks minging.

    I have a couple of lighting coils on my other TYs which are redundant and I'd like to use as a cheap fix.

    Thanks, Jonny.

  12. ty80 identification

    in Yamaha

    Posted

    I wouldn't post my engine/frame number in case someone wants to clone the bike. Block out the licence plate if you ever post any pictures of your bike online. You are probably pretty safe with a trials bike though.

    Jonny.

  15. TY 175 Kick Start Mechanism

    in Yamaha

    Posted

    Ivorybull, ...IF...you pm me your email address I will pull my kickstart assembly and send some HQ digital photos. I can even disassemble it and lay the parts out in order

    and photograph that. I've done it before so no big deal, as long as the return spring doesn't pinch me fingers. New capscrews should be here tomorrow so get on it. :thumbup:

    Jonny.

  16. TY 175 Kick Start Mechanism

    in Yamaha

    Posted

    Okay, so I just pulled the clutch cover off of mine:(, that's okay the oil was drained and it is up on the bench ready for the Allen head capscrews to be installed anyway. Working the mechanism the only ways that you could possibly have so much axial play are; as already posted, your ks spring is broken, you have re-assemled the shaft incorrectly or you have missplaced a circlip or other component. This is not a good situation as the friction clip (spring) and shaft stop will not engage in their respective crankcase recesses. Also if the shaft moves out 1/2 inch the pinion on the shaft will interfere with the teeth on the clutch basket. Do you have a workshop manual as you have to go through the assembly step by step and make sure it is correct :mellow:

    Jonny.

  17. Coppa Slip

    in SWM

    Posted

    B40RT, where were you planning on using the copaslip exactly? If you are just lubing bolt threads, use the same Aluminium based anti-seize that you use on your spark- plug.

    Jonny.

  18. Kick Start Spring

    in Sherco

    Posted

    Can you put the bike in gear and roll the bike so that the gears separate and release the spring. You may be able to de-torque the basket lock- nut if you put it in top gear, park it up against a wall, apply both brakes, get an extra pair of hands with a long handled bar + socket or an air impact. DAMHIK. (79 TY175 with 2010 NOS clutch basket) Alternately buy a clutch holding tool. Your cheap trials friends will love to borrow it and it looks cool in your toolbox. B)

    Jonny.

  19. Coppa Slip

    in SWM

    Posted

    Don't know about Rotax motors specifically but generally copper based compounds are used as 'anti-seize'. I think it's also good for high heat applications also eg. brake calipers. Grease is for lubrication.

    Jonny.

  20. TY175 Exhaust.

    in Yamaha

    Posted

    Thanks again Alan, I have already plugged the oil feed to the carb. The bike is stripped down and the frame is off to the powder coaters next week, and I am aiming to have the bike back in one piece in about a month. :icon_salut:

    Jonny.

  21. TY175 Exhaust.

    in Yamaha

    Posted

    Haynes manual says to remove packing (fibreglass) and 'discard'. Any thoughts? Will I have to re-jet the carb?

    I have removed the oil pump from my competition machine. Haynes manual says I (may) have to increase the jet sizes 5 to 10% "to allow for passage of the oil, or the engine will be running weak at all throttle openings". Chapter 2, section 12.9. Probably going to run synth @ 50:1. I find this doubtful, any thoughts?

    Jonny.

  23. TY175 brake hub.

    in Yamaha

    Posted

    So I removed the rest of the silver paint with some gasket remover and polished the hub with Scotchbrite, 0000 steel wool and finally some Solvol- hub looks great but I see lots of polishing in my future.

    Jonny.

  25. TY175 brake hub.

    in Yamaha

    Posted

    :wall: Anyone out there know if the brake hub/sprocket carrier on a '79 TY175 is made from Magnesium. I managed to get some gasket remover on there and it peeled the silver paint off from there pretty sharpish. It looks like aluminium (hand sanded to get the paint to stick?) I know the backing plate is. Any recommendations.. just polish and leave be? Don't want to strip and re-lace the spokes. Thanks. Jonny.
 
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