Yamaha

Here is a pic of the Mrs' new to her TY 175. After giving it a good cleaning and adjusting everything up I replaced all the fasteners with new stainless ones and added the Sammy Miller tank/seat combo and new yellow fenders. She was anxious to play with it so I will wait till next winter to do a tear down and repaint the frame and go through the motor.

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.

I purchased a 85-702 Trail Tech Vector Computer, the version that fits bikes with drum brakes, for my 74 TY250. One of its many features is an engine temperature sensor that mounts under the spark plug. It has a warning light if the temperature gets too hot. As part of the installation you have to enter the normal engine temperature. Does anyone know what the normal operating temperature should be? Thanks,

Hi there,i've just bought my first TY,it's a 125 and i want to know lots of stuff about them...... mix ratio,tyre pressures and any "normal" problems mods etc.Ta.

could anyone please tell me the best rear shocks available for a 175 and where to get them from as mine are well rubbish thankyou Neil

One of my TY175s has been a test horse for modifications since I got it in 1976. The latest change I have made is to lengthen the swingarm by 45mm. The frame on this bike has already been changed in a way that has produced a steeper steering head angle but retained the standard wheelbase. It also has TY250B forks and a 205cc motor. The wheelbase before the swingarm extension was 48.5 inches, which is quite short for a trials bike. I felt it might be nicer to ride with a longer wheelbase and with the weight bias further forwards, so I decided to lengthen the swingarm to achieve this. I had heard that others had extended TY175 swingarms by between 25mm and 50mm. There are …

Hello I have a TY175 and I need some more info on the front and rear mudguards: FRONT The front guard was a after market one which was broken but held in place by the usual chrome up and over twin looped support, the bike came with a good used Yamaha mudguard which attaches to the 4 bolts on the fork legs, should I use the the chrome support and the good used mudguard combined or not bother with the chrome support, im not sure which was fitted from the factory or whether I have some TY250 bits mixed into the bike? It's not the most original of bikes... REAR The rear guard was also broken so I have a OK used one to put on, its the genuine Yamaha type, under it was a…

Hi, Im wanting to modify the standard chain tensioner on my 175. Im looking to make a new bracket on the underside of the swing arm (front middle ish). Im wanting to incorporate the new style chain block with the slanted side. Reason been after every time out I seem to be straightening the arm and I need more tension on the chain at all times. Has anyone done this already and is there a standard setup I can buy from another modern bike that will work so I can just design and weld the bracket? (with a little bending of the arm maybe). Cheers Gav

just in the middle of full rebuild and has anyone got advice on foot rest mods been reading a few articles on the web and most say back an inch and down a inch anybody done this mod to they bike any advice would be grateful before a start cutting the rest mounts off

Just bought a 320 barrel for my twinshock. I have read that the early ones did not rev and were modified to improve the situation. How can I tell which is which and what are the modifications required to tune an early one?

I have looked at the Sammy Miller TY250 tank cover or skin/ seat combo. It looks like it would be real nice if it fits well. Has anyone put one on their bike and had good results? I assume it will work on a TY350 also. Thanks!

Hi I was getting on great restoring my 1978 Ty175 when today I kicked it over and the kick start spun round and cracked the engine case. I had kicked it over a few times over the last week since I got it going and it was OK but the kick start would fail to reset occasionally. So I have a couple of questions Firstly, why did this happen? Secondly, how easy is it to weld the cracked case? Thanks Iain

Well I got the flywheel off the TYp250 mono. I want to lighten it for a more "modern" feel. Some have suggested take of "some" amount. Some have suggested take of the ring entirely. Suggestions?

hello ive just bought 1987 ty250 i knew it was needing work but as you no when you get it home you start to see ahole lot more wrong with it the bad thing is the back wheel is knackerd the wheel was moving from side to side so i took off the tyre to see what i could do and to my horror the alloy was rotten so now i need a rim and spokes can anybody tell me where to go with this problem, cheers.

I'm still having some problems with my Sammy Miller tank/seat unit dumping crud into the pilot jet and was thinking about giving it a coating of Caswell's GTS 1750 sealant. Anybody know where to get it in the UK? I know people have used it on fibreglass tanks in the past has anyone got any updates on how good it is in the long-term. Thanks for any reply's.

I picked up a fairly original U.S. model 76 ty250. It still has the autolube hooked up. I know alot of people disconnect them and premix fuel. what are the pros and cons of doing this. I know about saving weight and piece of mind in not worrying about the pump failing. But has anyone ever really seen one fail? Do you think the lubrication is better if pre mixed.

Hi all, I've tried searching for the answer, but didn't find much, so have started a new topic. On my sons TY 80 Whitehawk, the kick start hits the peg before it has had much of a chance to turn the engine over. Is this right? Luckily it starts second kick, but I don't like that it bashes the peg very hard every time you kick it. Should it have a cranked starter, one that has the swivel at the bottom of the lever, so when you pull the starter out to kick it over, it misses the peg altogether? Hope that makes sense... Is there an aftermarket kick starter that does away with my problem?

He guys, got the ty250 mono running. One of the things I did was cleaned up and re-greased the kick starter. But now it wont sit nicely stowed away while riding - it just creeps out. Suggestions? thanks

Hello, I've owed a modern trials bike for a few years now, but just recently got bitten by the "Twin Shock" bug. I bought a '76 TY175, and the stock tank is dented and has a lot of rust inside, so I was thinking about purchasing a fiberglass tank to replace it with. I've seen the tank/seat unit that Sammy Miller sells, but I was wanting something a little different. So, my question is; can anyone tell me if the tank/seat unit that Yamaha-Majesty.com sells to fit the Mini Majesty and 200 Majesty frames, will fit a production model frame? I have the tools and abilty to modify the frame if need be. Thanks, Gary

Just bought what I think is a 74 ty250. (Havnt actually got it yet)Was wondering if there is a free downloadable ty250 manual like there is for the later ty250/350 mono's?