Author Topic: Trying to understand the vintage motorcycle rules  (Read 1604 times)

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Offline Upfield

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Trying to understand the vintage motorcycle rules
« on: October 04, 2019, 11:30:45 AM »
Hi Guys & Girls,

New to the sport!

Building a 1957 "pre-unit" 1000cc Triumph Twin. Want to put it i a 1964 feather-bead frame.
What class dose this put me in, having difficulties figuring it all out, don't want to be a Bonneville and get told i'm i the wrong class.

Thanks
Darren

Offline Stainless1

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Re: Trying to understand the vintage motorcycle rules
« Reply #1 on: October 04, 2019, 11:57:46 PM »
Darren, do you have a rules and records book?

I could go out to the shop to get mine, but if my memory serves me, vintage is 1956 and earlier
 :cheers:
Stainless
Red Hat 228.039, 2001, 65ci, Bockscar Lakester #1000 with a little N2O

Offline panic

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Re: Trying to understand the vintage motorcycle rules
« Reply #2 on: October 05, 2019, 10:49:55 AM »
IIRC, unless you can document the changes between a legal (1955) engine and your engine (head casting, etc.), and argue successfully that they provide no advantage. Tatro has some later-but-legal parts on his post-56 KR.