feetupfun

There are pictures of such a tool in Bultaco workshop manuals so you could replicate one yourself, or buy one ready-made from a Bultaco parts specialist

I did wonder that but the brochure shot you posted of a 348T has the fuel filler in a different spot Isn't it amazing how a slightly different shape to the fuel tank can change the looks from sexy n sleek to yuk city?

To me it looks like some other tank has been grafted onto the seat section of a 348 tank

Sorry I can't help with your question but I thought "thanking you in advance" was a pretty good line for a question about ignition timing

I'll have a few wild guesses at what squid's squeal is If it is only when the bike is moving along, it might be one of the brakes dragging If the pitch changes when you move the throttle, or as the revs change, it might be an air leak Again if it is only when the bike is moving, a wheel bearing or the drive chain might be very dry or siezed

We have used an OSET 16 for nearly three years now. We have not had any problems with the charging and we have not taken any precautions regarding the connection and disconnection sequence to bike and mains power. How hot is the charger getting? Our charger casing gets to about 45 degrees Celcius. Ours hangs in space from the mains cord so is well ventilated.

Maybe someone has raised the pegs on your bike because if you fit them any lower than they are standard they will be lower than the bashplate. An option for your tallness is to either fit higher bars, or modify the bar mounts to get the grips higher. On a Sherpa T this usually means quite drastic mods to the top triple clamp.

Why are you so sure it is a 1974 model? It sounds like an Ulf Karlsson model to me. That would line up with how you have described it so far.

The cable lug is probably for the clutch cable for when an earlier model 247 motor is fitted. It sounds like your bike has the later type cases on an early 247 motor or is a later type 247 motor.

Yes you are right Neo - I should - sorry mate

I think all Yamaha PW50s had the same cap design. Another option even cheaper is to get an aftermarket (Chinese) PW50 cap. I bought one of those at a Yamaha shop for my 1983 Yamaha PW50 and it was under $10.

Neo I wish people spelled coarse and dual correctly but its not likely to happen anytime soon

Two answers Some people do make their own scale model trials bikes from scratch. There are some particularly well done Sherpa T models that have their photos on the web. There were at least two brands of plastic scale model kits for the TY175 made in the 1970s and 1980s and some of those kits are still available new-in-box. I found one in a hobby shop in NSW, Austraila (by searching on eBay) to give out as a rider award a couple of years ago.

Twinshock, air-cooled monoshock or water-cooled monoshock TY250?

A 200 Beta is probably the same weight or even slightly heavier than your Sherco. A Beta 200 is not a zappy bike and would haul you fine, as mine did and I am 51 years old and well over 13 stone.

If the problem was the perforated exhaust tube being displaced sideways then yes there would be an effect on how smooth it runs, but I would be surprised if it could cause pre-ignition. You said that you had a new ignition and had tried different settings, but have you checked what the timing is doing at different RPMs with a strobe?

Alan there is a steel sleeve that rotates inside plastic bushes. The bolt you are trying to move siezes inside the steel sleeve. The recommended way to get the swingarm out is to cut through the bolt with a hacksaw (bike upside down, swingarm rotated out of the way and something to hold the frame away from the swingarm enough to get the blade in). The sleeve comes out easily once the swingarm is free of the frame. That bolt freezing in place is a very common problem with TY250s and TY175s.

The standard Ty80 shocks have very soft springs so if they are not moving with an adult on the bike then one or both are probably bent or seized. Standard TY80 shocks are not meant to be rebuildable. If you can free them up they may be OK for a youngster even with no damping. Our TY80 has the original standard TY80 shocks with zero damping effect but they move freely and seem to work well with my kids (35kg and 22kg) riding it.

Whether your shocks are worth rebuilding or not depends on what shocks they are and you don't seem to have included that info in your posting.

I will bet that it didn't run with a plain big end for long

Neo it is quite frustrating to try and help people with bike problems over the internet with such limited imfomation. I will try and answer your questions: Adjusting the idle mixture screw may or may not noticably change the severity of a flat spot caused by too small a pilot jet or a part-blocked pilot jet. I'm sure I already said that it is not just the temperature of the air and the fuel that matters but also the humidity and barometric pressure. A flat spot caused by a carburetion issue is not usually revs, load or gear related. It is usually throttle position related. How about humouring me by either fitting the standard pilot jet or testing it out something like this: Stick some paper masking tape to the inner end of your twistgrip and another piece to the housing. Make a mark on each so that they line up just as the slide starts to lift off the stop. Warm your bike up fully and ride your bike in 4th gear along a flat smooth surface like a road. Hold your ground speed with the rear brake while moving the twistgrip from fully closed throttle to about 1/3 throttle, moving the throttle slowly in both directions. If you do this and still can't feel a flat spot, then there probably isn't a flat spot and we can go back to square one. There are other possibilities for the symptoms you have described but they are very unlikely compared with the possibility of a part-blocked or undersized pilot jet.

Maybe someone else will give an opinion that you can agree with

Neo you have gone too lean on the pilot jet. It was probably marginal until the weather went very cold. Cold air is denser and makes the bike run leaner. The fuel is also probably being affected by low temperatures and is harder to ignite (narrower flammability range). What seems to you to be the motor being more responsive is just that you now have a flat spot where the pilot jet has the most effect (just off closed throttle). You are actually moving the throttle through the flat spot/dead bit and when you go far enough open with the throttle, the mixture becomes strong enough to support combustion, and the motor takes off suddenly. To maintain a perfect state of tune with a carburettor equipped motor requires consideration of the temperature, humidity, barometric pressure and any changes in fuel type, oil type, oil ratio and fuel age.

I'm guessing you don't have Hyundai vans in the UK but the iLoad has taken off here like wildfire with tradies, delivery drivers and private users too. It is a recent and modern-looking design, is good to drive, good value, good on juice and if it is like previous Hyundais (imported since about 1984 here) will be good in the reliability and durability stakes too. iLoad has only been on the market two years so far. Hiace and Vito are the main models losing sales to the iLoad here. http://www.hyundai.com.au/iLoad/default.as...%20iLoad%202010

I'm with the poms on this one (colonial from the other side of the Pacific Ocean)