kee Posted July 23, 2013 Report Share Posted July 23, 2013 Hello purchased a rather snotty looking 77 ty250 last week up in Nova Scotia, Canada. Have started the tear down process and it has been coming apart amazing well. Have the motor and everything but the headstock off the frame as of now. Just the two bolts for the rear fender snapped into the frame. It seems to be all there parts wise, should clean-up well. Wondering on just the usual stuff that should be looked into that has proven to be problematic through the years? Suggestions for parts in Canada? Have found parts sites in Britain and France and in the States. Have removed the autolube for the oil tank sight glass was cracked Have cleaned the carb and flushed the tank which was thick in maple syrup like two stroke oil. It hasn't been run in around 15 years. The brakes went along with the drive sprockets and the gentleman had a hard time sourcing parts, so parked it in a shed. Here's all the loveliness on the day we met. Thanks for your input. Keith Quote Link to comment Share on other sites More sharing options...
nelly1 Posted July 23, 2013 Report Share Posted July 23, 2013 that looks very good considering how long its been stood good luck Quote Link to comment Share on other sites More sharing options...
kee Posted July 23, 2013 Author Report Share Posted July 23, 2013 Hi thanks for your reply. Have rebuilt an old 71 honda cb500/four, so somewhat know what i'm in for. The motor has had a weld placed along the bottom case near one of the case bolts. From riding with the bash plate off perhaps? The shifter went through the case on the points cover. So will need to tig that up. Just an old bike looking for love and a spare parts catalogue. Quote Link to comment Share on other sites More sharing options...
tony27 Posted July 24, 2013 Report Share Posted July 24, 2013 I don't see any wheels in any of the photos, do you have them? Luckily all twinshock ty175 & 250s use the same wheels & brakes etc so you should be able to source them if needed off us ebay fairly easily The weld is a really strange place, would expect to see clutch cover damage as well if it was caused be impact Be aware that all the engine covers are magnesium & need special care when welding, make sure you get a good layer of paint on them to prevent corrosion Looks like you got a really good base to start with & shouldn't have too big a job to get it tidied up & running. John Cane at tytrials in the uk is great to deal with & stocks a lot of parts, the various ebays are great for finding the little things that he doesn't have Quote Link to comment Share on other sites More sharing options...
feetupfun Posted July 24, 2013 Report Share Posted July 24, 2013 The weld is a really strange place, would expect to see clutch cover damage as well if it was caused be impact a friend of mine had to fix a bullet hole in the RH inner engine casing in his TY250D so anything is possible when it comes to damage in odd places kee, that bike is a great find and while it is dirty, appears to have had a relatively crash-free life for a trials bike Quote Link to comment Share on other sites More sharing options...
feetupfun Posted July 24, 2013 Report Share Posted July 24, 2013 as far as problems that have appeared over the years on the TY250, for now all I can think of is corrosion of the outer engine casings (BCDE models) and the inner bush for the swingarm pivot siezing onto the bolt from corrosion. They are a bulletproof design generally. I have three of those motors in current use and none of them have required the cases split, and one has not even required rings or a rebore yet from new. Never had a frame crack either. Quote Link to comment Share on other sites More sharing options...
thats_a_five Posted July 24, 2013 Report Share Posted July 24, 2013 These old Yamaha's seem to be pretty tough and long lasting. After sitting that long you will definitely need to do a really good cleaning of the fuel system and carb. The cables may be completely stuck but if not, you can just keep working some penetrating oil in from one end and let them hang until it comes out the other end. The alloy wheel rims do have a tendency to corrode from the inside out so check them. The clutch plates may be stuck together so be sure it is in neutral when you start it the first time. I find many parts I need for mine on eBay. Side covers do come up from time to time if you have difficulty welding that one. If the seat pan is in good shape, hang onto it! They are getting pretty expensive. There are often seat covers available if you decide to buy rather than fabricate your own. 40+ year old shocks usually are only spring holders with little or no damping left. Fork seals usually need replacing as well. The threaded plugs that go into the top of the fork tubes can be a P.I.T.A. to get out. Loosen the top clamps first. Apply penetrating oil and let it soak for a while. Heat can be your friend if they are badly seized. Brake drums are probably badly rusted. Shoes probably need renewed. FYI, the front brakes on these seem to only provide a suggestion to the bike to slow. Not exactly powerful in the braking department. Have fun! Quote Link to comment Share on other sites More sharing options...
kee Posted July 25, 2013 Author Report Share Posted July 25, 2013 Have both rim/wheels, they both need brakes for sure and bearings perhaps? They have the original tires but are cracked along the rim bead The carb has been gone through and was in great shape for had been drained when stored. The tank was full of old nasty gas but is of aluminum so didn't rust. The petcock rubber was rotted but the rest cleaned up after soaking in carb cleaner for few days The rear shocks are leaking and need replaced was thinking of laying down the shocks to raise the rear? Front springs will be replaced. Yes feel good about being able to find the bike for they are somewhat rare around here. lest don't see them come up on the used market locally very often. It's rural here with 1000's of acres of land out the back door, so looking forward to bouncing around. Thanks for all your comments, will keep you posted on the progress. regards. Quote Link to comment Share on other sites More sharing options...
jon v8 Posted July 25, 2013 Report Share Posted July 25, 2013 That will be a really useful bit of kit when its done,whether you want to compete in twinshock trials,herd cattle or simply play on it.Very well made and reliable,building it back bog standard is all you need to do,it doesnt even need electronic ignition to make it run well.You can junk the autolube and run it on premix at 50-1 for simplicity. Once its up together it will last for many years with very little effort/cost.I hope you enjoy it as much as I have enjoyed mine. Quote Link to comment Share on other sites More sharing options...
kee Posted July 25, 2013 Author Report Share Posted July 25, 2013 Cleaned up the engine tonight. Gave it a wash in varsol. little bit of detailing work on the fins and should be good. Have a cattle dog, but no sheep/cattle. Intend to wear him out with this bike! Quote Link to comment Share on other sites More sharing options...
airman Posted July 26, 2013 Report Share Posted July 26, 2013 I seen this for sale on Kijij, good to see it went to a good home! I have a1978 ty 250 and still riding trials in NS. Quote Link to comment Share on other sites More sharing options...
kee Posted July 28, 2013 Author Report Share Posted July 28, 2013 Yes picked it up over on the Fundy side of the province, I'm over in LaHave. Were abouts are you? Going up to watch some roadracing in Shubenacadie this morning. Friends in town, races a Harley in one of the series. Quote Link to comment Share on other sites More sharing options...
guy53 Posted July 28, 2013 Report Share Posted July 28, 2013 Hi Kee, I live in Québec where there is quite a few TY TS ( mostly A model ) , I brought 2 back to life and have look around for parts for 4 or 5 years, so if you need something that you can't find localy, pm me and maybe I will be able to point you in the right direction. Guy Quote Link to comment Share on other sites More sharing options...
airman Posted July 28, 2013 Report Share Posted July 28, 2013 I live in Hantsport Ns ,we rode vintage TT trials at Shubenacadie . Kevin Quote Link to comment Share on other sites More sharing options...
thats_a_five Posted July 29, 2013 Report Share Posted July 29, 2013 That sprocket looks to be badly worn with 2 broken teeth. I would recommend replacement. Rear sprocket and chain deserve attention also. Quote Link to comment Share on other sites More sharing options...
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