TU 250 Volty trouble

[blaine]

My guess would be to drop down one tooth on front sprocket.If working fine in lower gears,need more revs for 5th gear.

[RuffStuff]

hmm thats got me wondering if its already had a tooth up on the front you know, it does seem strange that it cant pull 5th at all, ill check that in the morning, but then from what ive read on here it should be able to hold the speed when its shifted up hmmmm

[blaine]

That's my thinking,that somebody went one up on sprocket.

[Water Warrior 2]

Originally Posted by RuffStuff

its all good and very low miles 8k, plus its just in the one gear, hence why im being baffled by it

My bad, just went back to the beginning. Okay here is another idea that might be the problem. New plug or not, you have a weak ignition system that is only showing up when the engine is at it's highest load(5th gear). I have seen this on cages so it could happen on a bike. You may want to check all the ignition system wires for frays or damage.

[RuffStuff]

yeah ive already done the whole loom, as there was a fault thought to be in the switchgear but turned out to be a duff connector behind the battery, the rest of the loom is perfect all the way thru

im thinking its the cog, maybe the jap one has a smaller front than uk spec so its gone up one by someone buying a replacement kit

[RuffStuff]

right ive had the cover off now and its got a 15 fr cog on, i cant find any specs of the early jap spec one anywhere so not to sure if its right or not

im at a loss with this now, im being beaten by a 250 grrrr

time for ebay me thinks

[Easy Rider]

Originally Posted by RuffStuff

im at a loss with this now, im being beaten by a 250 grrrr

Time to review the basics:

Several of us have said that the GZ is an under-powered bike that won't pull 70 reliably in any but the most ideal conditions. Having a 300 LB rider and no windshield only makes matters worse.

There is no reason to think that your similar bike would be any different.

I (several of us ?) think what you are describing is VERY likely normal.......and so far, you haven't said anything that would tend to indicate that it is NOT normal.

Before you spend a lot time, effort and maybe money on this "problem" you need an onsite test ride by someone who is experienced in small bikes like that. Seriously.

[bonehead]

Hell, I'm happy when I can get 60mph.

[RuffStuff]

yh im happy with it, but from everything i can work out and the little bikes ive had before they have all been able to hold the speed in 5th and atleast accelerate a little bit, this just rolls off 15 mph as soon as its shifted

my options are give it absolute death up the bypass in 4th or risk getting rear ended, either raise or lower the gearing, fors and againsts for each option or lob it on ebay and make a profit on it

everyone drives faster round here and most on there phones and so it would seem none of them are arsed about watching for bikes, ive got the scars to prove it

[bonehead]

The 2 250's I had back in the 70's would haul my ass around at hiway speeds no problem, then I bought this one and could'nt figure out why I can't get over 60. Then it hit me, the other 100 lbs I'm carrying around. DUH!!!