TY Chain Guide ?

Fish · Post by **Fish** » Mon Nov 14, 2005 9:00 am

Hey if I'd a had a bit of nylon lying around - I'd have made it out of nylon !

Anyway, I was out for a few hours on the weekend, and it worked fine, and remember that this prototype was only pine, imagine if I'd carved it out of ironbark ?!
Hmmm now that set's me thinking, I might even have an old lump of hardwood fencing post lying around somewhere......

And I am humbled at the offers to make me one, thank you very much, but I really couldn't accept - since it's only the fact that I'm too stingy and impatient to buy the $50 one and wait a few weeks for it to arrive from Japan ! You know how it is - when you're all set to go out on the weekend, you don't want to let one missing part stop you.

This week's project is to carve a spare wheel out of treated pine, that way it'll be unaffected by all this rain. Or maybe balsa, then I could float.....

Rob W · Post by **Rob W** » Mon Nov 14, 2005 9:49 am

matt · Post by **matt** » Tue Nov 15, 2005 2:16 pm

Hi fish,
I bought a block of nylon 80mm dia by 300 long and made 2 blocks 50mm long for my bikes. Cost $45. The rest is in the shed, if you or rob need some give me a hoy.

Neo · Post by **Neo** » Tue Nov 15, 2005 3:09 pm

Hi,

What do you guys use to cut-n-shape the Nylon....saw, file, Angle grinder??

Best of balance.

Neo

matt · Post by **matt** » Tue Nov 15, 2005 9:45 pm

Hi Neo,
Used a band saw, drill press with a hole saw and a router bit to produce what Honda did not want to know existed. Its a bit hard to work with but it keeps the greenies happy.

Fish · Post by **Fish** » Fri Nov 18, 2005 7:48 am

matt wrote:.....if you or rob need some give me a hoy.

Thanks Matt, I may need to take you up on that when the wood wears out !

Would you know why the standard guide goes right around the pivot shaft - is it needed to protect something near the sprocket, or do you think it's just top and bottom of the swingarm that needs protection ?

Rob W · Post by **Rob W** » Sat Nov 19, 2005 7:18 am

Hey Matt, sorry not to get back to you earlier. Been busy making parts and investigating my next ride. Thanks for the offer of the nylon. I sometimes use it to machine blanks which I then reproduce in urethane, so yes I will take you up on your offer. Is that a TLR you have made the bit for? I have been offered that part to do so I'll sling you one when I get around to it (the gent is just waiting for the off season rebuild to happen). Look me up at Conondale.

Fish, I am not sure about the ty's but other manufacturers make them wrap around so that they hang on without the need for screws. This one is from a suzuki. It is soft and actually stretches a bit to fit. As far as I can see there is no need to protect the front of the swingarm (unless the chain snaps and wraps around the countershaft?), it is just easier and cheaper to make them that way.

I like the wrap around style because it means the swingarm has to be removed to fit it so people have to service their swingarm bushes/bearings more often

- unless they ignore it and make bits out of wood :roll:

Post by **David Lahey** » Sat Nov 19, 2005 4:09 pm

This is one of the funniest threads I've ever read. Who would have thought something like finding a replacement swingarm protector for a TY350 could be so interesting and funny?
I have to confess to doing similar to the piece-of-wood thing on my 1978 RM250C-based enduro bike when I was desperate for something to use so I could go on some ride 20 years ago. I remember using a piece of plastic cut from a kitchen cutting board to protect the swingarm. Come to think of it, that piece of plastic is still there doing sterling service. I drilled and tapped a couple of 6mm holes in the top swingarm gusset to hold it there.
Good on you Fish for making something out of wood to get you through.
Rob, there haven't always been people like you making lovely mouldings from polyurethane. The reason I was forced to use a cutting board is that Mr Suzuki had stopped selling those parts not long after they stopped selling the bikes and VMX restoration fever had not yet started.

Rob W · Post by **Rob W** » Sun Nov 20, 2005 6:54 am

Hi david, confession time. :oops:

Just two short years ago I needed a chain slider for my '84 KTM250. Just like Fish I couldn't be bothered getting a new one. And without the original it it was too hard to make in urethane. I scouted around for materials. Plywood - no. Cutting board - to brittle and hard to bend around the pivot. Bucket lid - to soft. :-k

I ended up pinching a 60 cm strip 2 cm wide from the rim of my wife's poly horse water trough. (She still doesn't know so keep it quiet please. :wink:

) A bit of shaping and heat treatment and there you go. It is still on it, even though I have since made a copy of the original part. Ahh confession is good for the soul. :thumb:

Fish · Post by **Fish** » Sun Nov 20, 2005 8:59 pm

David Lahey wrote:............. I remember using a piece of plastic cut from a kitchen cutting board to protect the swingarm. Come to think of it, that piece of plastic is still there doing sterling service. I drilled and tapped a couple of 6mm holes in the top swingarm gusset to hold it there.

Wow David, Cool, I was going to use a cutting board, but I thought it'd melt with the chain rubbing ?! I'm impressed that yours didn't.

I might try that next, as I think that'll look much more swanky than mine. I'll bet you get comments on it all the time ?

TY Chain Guide ?

chain block

Re: chain block