technical name for the cog behind flywheel (motox bike)

KarlMc · #1 18th March 2012, 09:28 PM

as above and a price of one, on a 2002 tm 400, ccm isnt open till tuesday and i cant find a mobile for any of the lads there.

Bike is turning over but not starting, plenty of compression.

Thanks in advance.

Gixxer · #2 18th March 2012, 09:38 PM

If the engine is turning over, then I doubt the problem is anything to do with any gears... if it is turning over?

How did you test for compression?

phoenix · #3 18th March 2012, 10:01 PM

the little gear is called , a whojockapibby part no. 20abusdonnycarneynorth , sorry couldnt help that

n.mack · #4 18th March 2012, 10:50 PM

The gear on either side of the flywheel is called a motorbike
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doctorchopper · #5 18th March 2012, 10:50 PM

Originally Posted by KarlMc

as above and a price of one, on a 2002 tm 400, ccm isnt open till tuesday and i cant find a mobile for any of the lads there.

Bike is turning over but not starting, plenty of compression.

Thanks in advance.

There is a reason you can't find their mobile numbers, probably because they don't appreciate calls at 930 pm on a SUNDAY, especially on bank holiday. I think what you are asking about is a woodruff key. Is it the little halfmoon shaped piece of metal that drives the flywheel with the shaft? If you are in a big panic to get it running for tomorrows practice day in doon, don't worry, its cancelled due to rain.

KarlMc · #6 18th March 2012, 11:09 PM

Cheers for replies, thanks doctorchopper, I wasnt goin to ring him this evening. I wanted to price the part for the bike to see was it worth buying.

Think the woodroof key is the one im looking for. thanks

doctorchopper · #7 19th March 2012, 11:39 AM

if all it is is the woodruff key they are cheap enough, be less than a tenner, if it did shear pay close attention to the crank shaft where it sits in to make sure it didn't do any damage. the older wr's had a big problem with them backfiring on startup and sheeering the key, not sure if the tm's suffer from this issue. Did you take the flywheel cover off and kick the bike over and see if the flywheel spins or not? that will tell you if the key has sheered,you may need to gently hold it as its on a taper spindle and might spin with shaft but not under load. If you are stuck a engineer supply shop should sell woodruff keys but there is no gaurantee that it will be the correct size, especially without one to match it up to

doctorchopper · #8 21st March 2012, 08:37 PM

Did you get you're bike sorted