jane
Forum Master
Posts: 60
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Post by jane on Oct 2, 2006 21:04:16 GMT
hi guys, me again,
ok, had the bike on the road for a week now, loving every moment, but.and theres always a but !
when starting off, after a couple of mins at a steady speed(15-20) mph, the bike suddenly pulls back then seems to spurt ahead with greater acceleration even thou' i dont move the throttle any more.
i gues this could be caused by the rollers (havent checked them yet)the bike is 3 years old and done 1650 miles.
if my rollers are worn, what sort do i need, what weight should they be and do i have to change the belt at the same time?
also there i sound like something rubbing near the back tyre, would this be the rollers again? it only passed the mot last week so dont think its anything too serious.
thanks in advance
jane
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Post by soulie007 on Oct 3, 2006 15:54:09 GMT
My taishan was like that.....until the valve clearences were adjusted.
Carb could be iffy like a dodgy auto choke as mine also had that.
5 carbs later and a no probs like that anymore.
I have learnt that with chinese scoots its try and try again.
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Post by larry8 on Oct 4, 2006 0:10:36 GMT
Ok, only 1650 miles! The variator rollers should last at least 10,000mi but more likely 15k or even more. However the drive belt could be shot in light of all the other problems you had with this scoot. It could be a cheap one which have been known to fail or start to fail around 1500 miles. Check under the tranny cover at the vent hole on the bottom for black dust and strings hanging out (not while it's running). If you see stringie stuff there, then buy a kevlar replacement belt. The kevlar belt cost a few pennies more but should last at least 8000miles. It's an easy part for you to replace. You can take off the cover and check the belt too. And don't forget to put in a new spark plug, the Chinese ones are junk.
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jane
Forum Master
Posts: 60
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Post by jane on Oct 7, 2006 8:50:07 GMT
thanks, will maybe have a look this weekend, as the weeks gone on the bike doesnt seem to do it as much, maybe its a case of regular use is fixing the problem?
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Post by hypojam on Oct 7, 2006 9:28:32 GMT
Sounds like you could do with some lighter rollers.
With your current set-up when your speed increases the engine is able to rev faster which allows a load of power to be released.
So, if you get some lighter rollers the bike will be allowed to rev at this higher state all the time no matter what speed your doing.
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Post by larry8 on Oct 7, 2006 14:02:44 GMT
I still think you have fried the belt.
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Post by spinalfusion on Oct 7, 2006 16:37:40 GMT
Jane,
Yesterday, I had the same problem happen to my BT50QT-11.
Today, I checked the valve clearances and they appeared to be ok but I reset them just anyway because it had taken me I don't know how long to discover how to get the panels apart to get at the engine. I wasn't going to go through all of that without adjusting something.
Anyhow, whilst I was there I thought that I'd check the spark plug. The plug was ok but I found that the HT lead had a split in it just as it entered the plug cap.
I cut the HT lead, refitted the cap - Bob's your uncle, problem solved.
So, I'd check your HT lead if I was you.
Cheers
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jane
Forum Master
Posts: 60
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Post by jane on Oct 7, 2006 22:28:50 GMT
ok guys, will take her out for a long run tomorrow, havent gone more than 2 miles per journey so far, have checked on the belt, which looks fine, will try and find the lead you mention, although i should have notice if it was split when changing the spark plug a couple of weeks ago,but i didnt.
still unsure of what size rollers i need or the make?
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