Trials Australia Forums

My mid 80's TY350 has some sort of wooden looking chain guide or protector, just behind the front sprocket. I don't know what it is called - but it's broken.

Can anyone tell me what it's for ?
Is it critical, so should I replace it ? And if so, what it's called !

Thanks

Hi Fish

It is a chain slider/ swingarm protector/ chain guide. It stops the chain flogging on the swingarm. They are normally made of rubber, plastic, or urethane. I would not run without it. I think TY ones are still available from Yamaha. One of the Yamaha guys will know - David?

If they are hard to get I can replicate them in urethane. I have copied a whole bunch of stuff for old bikes - mostly VMX machines. I am working on a web page - not finished yet but you can see it at http://www.ozktm.com

Thanks for that info Rob,
Now that I can describe it a bit better, a dealer has just advised me that they cost around AUD$50. Which was a bit more than I was expecting !

Perhaps I could make one out of wood ? But I don't know how hot it'd get ? and there's some of it missing on my broken one so not quite sure what it needs to look like. Although I don't think it'd matter if it's not an exact copy.

I might have a go, and if it doesn't work out I'll have to get the real thing from Yamaha.
Or can you give me an idea of would you charge for a urethane one ?
Thanks

Hi Fish

without knowing exactly what it looks like or how hard it would be to copy, I would say $20-$30 max. It would be good to have a NOS one to copy because they work out best. Do you know of any other TY owners that might share the cost of a NOS item? Failing that I can rebuild a reasonably complete used part. Once again, do you know anyone who will lend us one? I'll send them a new one too. The chain sliders I make will last longer than stock items - period. And you can have them in whatever colour you like

Well thanks again Rob.
I've had a go at making something myself. And without one to copy, I just made a guide for the top of the swing arm. I know the proper ones also go underneath, but I think the top is the main place where the chain rubs. It also saved me from having to completely remove the swing arm.

It's made out of wood, and I gave it a spray of heat resistant paint. And bolted it to a bracket and then onto the chain guard bracket which I don't use.

So we'll see how this one lasts, and then I may have to go for a genuine one.

Fish wrote:It's made out of wood....

I am still shaking my head in disgust - Wood!!!?? It still amazes me what people can come up with to keep their bikes going. Well done Fish. Keep us posted. It'll probably last forever

Gidday Rob, well as luck would have it....i now have a ty250 (pinky) it's in amazing condition. It is a 90 or 91 model, but apperas to have one of those chain guides your talking about. would love to bring it up to you to show off my new investment. Regards, Wayne.

Hey Wayne

Is that the 90 Pinky with the hi-torque redgum piston or the 91 with the West Aus lightweight Jarra one?????

Japanese willow i believe....i was told it was an import.

seachange wrote:Gidday Rob, well as luck would have it....i now have a ty250 (pinky) it's in amazing condition. It is a 90 or 91 model, but apperas to have one of those chain guides your talking about. would love to bring it up to you to show off my new investment. Regards, Wayne.

Hey wayne. A few of us can't get to the interclub trial on Sunday so we thought we might have a social ride at my place. Interested? I think you may be on shift or on call, but post me privately with a number and I'll give you a ring anyway. We might rip off your chain guide, copy it and send poor Fish one.

Save the trees.