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Crown Wheels

PostPosted: Fri Aug 07, 2015 11:18 am
by drivera
I'm about to start the building of an engine for a series 2 I've picked up and in my box of bits I have several 46 teeth crownwheels , some are early types with the built in cush drive and the others are the later solid type . I know Sticky in his book says not to use the early types in tuned engines but what are they like in std 200 engines , anybody used one recently ??

Re: Crown Wheels

PostPosted: Fri Aug 07, 2015 5:57 pm
by Wack
A mate had one in a Rapido Classic, it broke the springs.

Re: Crown Wheels

PostPosted: Sat Aug 08, 2015 7:02 am
by Digger
Wack wrote:A mate had one in a Rapido Classic, it broke the springs.


Hardly a standard engine.....

Re: Crown Wheels

PostPosted: Sat Aug 08, 2015 12:39 pm
by drivera
Cheers guys , my plan is a 185 kit which has been bored to 200 with a clubman type exhaust and a 20mm carb , so not super quick but not too slow ( hopefully ) just wondered if the cush drive type crown wheel would be ok , not sure what cc of engine they were used in ?

Re: Crown Wheels

PostPosted: Sat Aug 08, 2015 5:33 pm
by Digger
They were in early 125's and 150's.

As Sticky states they should be ok in anything other than a tuned motor but a solid one isn't too expensive....

Re: Crown Wheels

PostPosted: Sat Aug 08, 2015 5:41 pm
by Paulnobodyimportant
I had the same dilemma when I rebuilt a series 2 150 engine. In the end and because it was relatively low cost, I put the more modern crown wheel in. As such I can now sleep at night.

Re: Crown Wheels

PostPosted: Sat Aug 08, 2015 7:38 pm
by drivera
Cheers Paul think I'll go safe and use a solid crownwheel , ta for the info :)