Ok the bike as normal now, i lifted back end up and gave it full throttle it goes fast then slows then randomly jumps to faster and slower 'revs', taking your advice i unplugged the speed dial and it stays at a constant speed so im presuming it is infact the speed dial causing problems, im gonna take the kids out tonight and see how it is with it unplugged then plugged back in, i also got a good email from oset too who talked about changing the fuse like you said so i will do that anyway, ill keep this thread updated and cheers so far, heres the email i got from oset incase anyone else has problems or just for information purposes...
Hi Andy,
If you have an electric 'multimeter' tester, then the first thing to check would be the batteries themselves. Fully charged a new battery will get to 13.1 or 13.2 volts. If one or both are way below you'll need a fresh set of batteries.
Judging by the symptoms, my guess is that you need to replace the relay. When you turn the key, you should hear the relay click on. It is then passing the power through to the controller, and on to the motor. If the relay is not holding its connection, then it could cause symptoms like you are experiencing.
I spent ages working with a buddy on his daughters bike. It would run for a while, then cut out. We replaced just about everything, piece by piece... the relay, the controller etc. In the end, none of the obvious worked. We'd already checked the fuse, but I said 'just for the hell of it, let's change the fuse'. It looked perfectly alright, but after replacing it, the problem went away.
There could be a loose wire as well. It really pays to go through the bike and check all the wiring. Give a little tug on each connector to make sure they're good. Re-do any connectors that look weak. My son Oliver is now a veteran at age 8, having got on his first OSET prototype at 3. In well over 50 events, including 2 seasons riding with the adult novice class in the USA, and very wet Nationals and other events in the UK... he's never had a DNF. There's nothing more frustrating that the bike stopping for a mysterious reason. Prevention is much better than cure!
I hope this helps.
Many Thanks,
Ian Smith
OSET
