Hello-

I am new to trials, and bought a 'bike' nice and cheap, thinking I would drop/crash/ruin it learning, so I went for a cheap option, to limit my tears as my bike gets destroyed.

To call it a shed is an insult to a good shed. Beta 2003 250, in a poor condition.

It ran well first time out, no rear brake, fan didn't run, overheated and eventually stopped running. Took it home, new airfilter, thermostat now bypassed, oil change, brakes bled and new pads. Next time out, it ran really well apart from clutch issues (awaiting week off to start Dan William's clutch fix process).

Last time out, would not kick up at all. Spark plug changed- no help. However, there is petrol getting to the plug. Just no spark!

I took the coil and HT lead off my bike and tried it on my friends, which then sparked so I dont think my coil is the problem.

I have been informed that leaves the stator, regulator or DCI as the cause of the problem.

My question is- how do I check each of these to find which one is knackered? and do I need any specialist tools to perform these checks?

Any help greatly appreciated, thank you

send for a new stator on the basis that you will send it back if is not the problem. but as many beta rev3 owners will tell you, it is almost certainly the stator. and they cannot really be re wound repaired etc. dont even bother trying anything else until you have ruled out the stator. it is an easy repair, you will need a fly wheel puller for it too. i know unlucky lads who have had more than one fail on thier bikes. good luck.

i think you will find that a lot of people on here have had there stators rewound succesfully i do hope so as i have to send off my dads tomorow and its

i think you will find that a lot of people on here have had there stators rewound succesfully i do hope so as i have to send off my dads tomorow and its

Is the stator something that just goes? There was no weakness or anything in the bike last time out, ran fine and then just would not start the next time out.

Gday, stator issues are pretty common on earlier Beta's. There are aftermarket new ones available, or go for the rewind as mentioned above. Otherwise, they are a pretty good bike. For peace of mind you could go through all your various connectors and check for cleanliness and the presence of corrosion, but you will likely find this does not help. Costs nothing to look though :-)

Cheers,

Stork

Edited May 9, 201115 yr by Stork955

Have you checked the coil lead...... remove the lead from the coil and cut off 10mm then screw it back in to the coil..... bad connections will stop a spark.

Yeah I took my coil off and stuck it on my friends and it worked fine. West country windings have said they will have a look at my stator, and if it's not the cause of the problem they will send it back for a small testing charge. From what I gather on the forum rewinding with a better wire is a better option than having a new beta part, as the same will happen with a new beta part.

Thanks for the help on this- WCW have a quick turnaround so hopefully the bike will be running soon, and I can post my next problem here for you all!

West country windings diagnosed the fault, repaired for under

always good to have an update when the problem is solved,, cheers

Hrummph I just saw this. How'd my name get dragged into it?

Glad to hear it worked out well for you.

I spent days reading all the topics on beta forums and you seem to know just about everything dan! Good news is stator is working, I have spark at the plug (after learning the importance of woodruff keys and flywheel positioning). Bad news is I took the bike out, rode fine for ten minutes but then wouldn't tick over when idle. Had a fiddle with the thumbscrew on the carb and now it won't kick up. Changed thumbscrew back, still no joy. Took carb apart and gave it a clean with carb spray. Still nothing. Don't suppose anyone can help with the carb set up details? How far the air screw and thumbscrew should be adjusted? And on a side note- what is pinking??

Thanks for the vote of confidence but others know much more and Jon Stoodley and Billy T have forgot more then I'll ever know.