Yamaha

Hi, I am toying with the idea of converting my Yamaha Pinky to twinshock. The main reason is so that I can ride some neighbouring club trials in twinshock class. Our club HEREFORDSHIRE CLASSIC TRIALS CLUB runs an a/c mono class but the neighbours dont. Is there anyone out there who has done the same, and if so is it much hassle. I ask because the swingarm doesn't have a lot of meat in it, unlike a box section as on a TLM 200, a mate of mine converted his to twinshock in no time. Thanks.

What is the correct procedure for setting the points gap? I had the primary stator coil give up the ghost this spring.I then put the lighting coil in its place along with a new set of points and condenser.Checked for spark,which was good and back in the corner she went until last weekend. It was very reluctant to start and when it briefly did it sounded really out of time so I shut it down and took the Sherpa T. Maybe there are other problems in my using the lighting coil,but I would like to make sure that I have the points set correctly before anything else. I think the way that I did it was to turn the flywheel until the points looked to be fully ope…

Does anyone out there have a TY250Z two stroke aluminum frame Yamaha trials bike? What do you think of it. Is the engine the same as the Yamaha 4 GG - AxC = 74x58 on the new Scorpa? Does anyone know why it was discontinued, or where it was available?

A while back someone put on I don't witch forum a picture of a twin shock TY with YAMAHA 1970 Yamaha Racing colour, i.e yellow with black striping. I won't say that I'm not interested in having my A model painted like that, but at least I would like to have another look at it. For the benefit of the owner of that beauty, I live in Qu

This has possibly been asked / covered before. Has anyone got info on the numbers of original Majesty Yamahas 250s produced?? I am curious to know how many Yam framed bikes were modified, as well as numbers of the later Godden framed bikes were produced. I have an early Yam framed bike, it needs cosmetics more than anything,the frame is black and doesn't look as if it has ever been painted since it was originally built, all frames seem to be red . yellow or white??,I am wodering if it is one of the 1st?? 1978 S reg, it sold recently on the bay but highest bidder was clearly bored and decided to bid but not contact me after so I have decided to keep it. Any info would be…

I have a standard TY175 which has been lying around the garage for some time unused as I also have a scorpa 250 and because the TY is a little bit on the small side. I was thinking about selling the TY however I started her up and had a little pootle about and realised that I love that little bike and for the couple hundred pounds it cost me its great just to have about. So, my question is has anyone modified a TY175 to make it a bit more comfortable to ride, lower foot pegs, longer swing arm, don't really want to spend the money but what difference do the majesty frames make etc? I'm 5 11 tall and just feel as if I am hunched over a bit when I ride it (I don't walk hunch…

Dear All, I know this has been discussed before but hoping for a few tips. I'm currently 'remanufacturing' a TY250E for mildly competitive fun use and have just spent a day stripping the forks. It all came apart reasonably well (half an hour with an air powered impact gun eventually removed the damper tube bolts). A bit of careful cutting of slots with a Dremmel got the oil drain screws out and deft use of a centre punch got the old oil seals out. So now I have a collection of parts which seem relatively unworn, but one damper tube was rusty so must have been sitting in water for a while. The stanchions are pitted and will be sent off for straightening /rechrom…

Does anyone know if its worth fitting a boost bottle to a TY175 and is it possible to fabricate one.Does anyone know of a suitable Yamaha inlet manifold with the branch fitting that could be used in the event I attempt to go ahead with it. Regards.

hey all im intrested in buying a yamaha majest, any idea how much i should be paying for the one thats ready to trial. thanks jack

I went to the Telford show with the intention of buying a Twinshock trials bike, after extensive canvassing of our local Classics club members opinions. Two hours into the show, my wallet is lighter, and I'm the proud owner of this: The bike was on Ian Pebery's stand, but wasn't one of his. The owner was at the show later that morning, and filled me in on a couple of little things that needed doing. I'd already spotted a couple of my own, but was confident these could easily be rectified. Everyone I knew at the show commented on the purchase, so much so that I started to panic that I'd bought a Lemon! With Ian's help we put the bike in the back of my car, and I left ju…

Hi, I' am rebuilding my twinshock TY, this is a long time project, whenever I have time I do something for the bike .... Anyway the airbox of the TY 125 / 175 is very tiny it has more likely the size of a can of sprats then a airbox for a 175 to 200cc motor. A larger one should improve power output. Can any one tell me where I may get a larger capacity airbox for my TY, also some stories / how to ... for custom made air boxes would be very nice too. Many Thanks Patrik

Hi guys ,can I have advice my stock ty175 motor seems flat and fed up of resetting the points ect and I've thought of buying a set of boysen reads lifting the flywheel electronic ignition I want to up the compression slightly I've heard you can purchase a thinner was gasket but I'm not sure which one and where to get it from other option was to skim head but how much should I skim and finish te bike of with a wes system exhaust would I gain from them mods to make the Bike More responsive and better to ride ?

hello friends, sorry to be a nuisance but was hoping if someone would confirm that the original gearing on a '74 ty250A is 14/53....i often see it said 13/53 was the original gearing? the bike has 12/53 on it now. my question is, if i put a 14 on the front how many link chain would i need..is it 110 or 114? would the bike then suck at trials tho? seeing as im going through the hassle of getting it road legal be good to keep up with traffic! many many thanks from an mechanically ignorant green horn in NYC!

I just picked-up a really nice 1978 TY250E. It's in great cosmetic condition and it starts easily, idles well and has a ton of compression. However, for a 250cc 2-stroke trials bike it seems to be a bit lacking in low end power. I figured that a bike would loop itself in first gear if it was given full gas and a good pull on the bars. On my bike - it takes a lot of effort to get the wheel just a foot off the ground. Part of this is poor rider technique, but I have other 2 stroke bikes and when they are in the power band - they rev-up like crazy! I posted a couple of videos below so you can see what I mean. It might be my expectations are too high for a bike with a h…

I have just seen a picture of what looks like a yamaha 4stroke engine in a new tubular frame with yamaha wrote all over it! It was been ridden by one of the ex world level riders... Anyone know if this is on it's way or just something someone has thrown together?

im looking to get my ty 250 road reg.yamaha want

Hello I have a TY175 twinshock with standard forks and am looking at moving up to something a bit better. I know I can go to the TY250 forks but I was wondering if anyone else had gone a step further with modern forks from say a Gas Gas or similar. I've read that 38mm is popular? Any suggestions or experiences? What bike could I take them from TY250 FORKS A bit better Using standard TY175 wheel brakes etc MODERN FORKS A lot better Do I use the whole front end inc wheel etc or just the forks and yokes If using the TY175 wheel, do i have to have a new spindle made? I need to retain the basic look and the drum brake of course Thanks for any help Owen

First off this is not a slam against Sammy Miller Products as I have a lot of them on this bike. It is a request for help solving a problem. This bike replaces my wife's old Montesa 123. She really like the looks of a tank/seat combo so a new one was ordered for the little TY. A US vendor that sells these recommends sealing them so I used a method that worked great on the Montesa tank. The first weekend of riding the bike was great. After it sat for a week it would not run for her and I could tell the pilot was clogged. When cleaning it I found a fair amount of varnish on the slide. After the carb cleaning the bike ran fine for the rest of the day. The next day brough…

I'm looking to modify my 1977 Yamaha TY175 to make it more suitable for my size and for trials competition. But before I spend a ton of money I thought I would ask those who have hopped up their bikes for some advice on what works and what doesn't. Thanks in advance for the help. Maybe a bit of info would help. I'm 50 years old, 200 lbs and 6 feet tall. Fairly muscular and a longtime motocross and ice racer. I just started riding again this season after 12 years of no dirt bikes. I picked up the TY175 two months ago and have ridden 1 trials event, in which I competed in the Twinshock C line. I plan to ride C the rest of this season and then move up to B next season and h…

For you Majesty fans, this is mine now I've finally finished it