I'm after suggestions......... I've been "volunteered" to sort a friend's son's Baotian. Initially it wouldn't start, but that is now sorted (electrical fault on the starter circuit). However, it is utterly gutless with a top speed of about 15mph on the flat. I take with a pinch of salt that it should "do 50 at least", but I'd expect 30 - even with a lump like me sitting on it! So far I've... Checked out fuel system, plenty of petrol getting to carb. Removed, cleaned and checked carb - nothing obviously wrong there. Removed air filter in case it was restricting it - no change Removed exhaust and checked that there were no restrictions, blocked silencer etc. Replaced the variator - the old one was completely knackered, briefly I hoped I'd sorted it - but no improvement. Checked valve clearances - according to manual Checked compression - about 100psi, not wonderful but should be enough. Tyre pressures are good. Front brake does appear to drag slightly but I don't think it is enough to stop it - I also removed the caliper and tried it without a front brake and it made no difference. I did replace the pads, and at the same time dismantled and cleaned the wheel cylinder. I'm out of ideas. I'm beginning to dislike it! It starts instantly, seems to rev OK (though never having owned one I'm not sure how "revvy" it should be) but is completely lacking in any grunt at all. I don't expect stunning performance but my velosolex can almost out perform it! Can anyone offer any suggestions before I return it- or consign it to the local scrap man. I hate to be beaten.