"Waldron, James" wrote:
> Dick,
>
> For motorcycles:
>
> I tried once, but ran into immediate problems. It looks easy, Frame class
> times engine class times engine size. But there are exceptions. For
> example, Frame class P allows only engine classes P, PP, and PS and only to
> a maximum displacement of 2000cc. So far no problem. But, look at frame
> class S, which indicates ALL engine classes and all displacements. This
> would seem to indicate that you could have, for example 1000-S-P (1000cc,
> streamliner, production engine) but apparently this combination is not
> allowed (though I cannot find a specific rule to exclude it).
Hi James,
On that; I think the point is, it would be a whole other rat's nest to chase the
authentication of a 'production' engine in an otherwise custom package.
As it says; 'Production engines must be the same model as the model of the frame
being used..' That isn't possible with a custom frame.
I see the production class not so much as a motor class as one for the total
'package' as sold to the public. In that case it is easier to confirm/prove
that
something is stock, vs somebody saying; well, this was stock on the '98
Thundercrotch, but not the '99 Seppuku...
An analogy would be a car streamliner class just for 'crate' engines.
In defense (if it needs it) of the setup, there are a lot of classes, but there
is a big difference between a pair of bikes with perhaps a 100-150cc
displacement
difference, as well as the difference between pushrod/OHC. They didn't even
split it up 2-stroke/4-stroke! Then, as in the cars, you have different degrees
of streamlining, actually pretty simple.
Have fun,
Rick
> A vehicle of
> such type would (I guess) run as 1000-S-'G' (G= modified gasoline engine)
> What if you are running an unmodified production gas engine? So
> apparently, not ALL engine classes are permitted in all frame classes.
>
> Where do you find out what's in, and what's not?
>
> Not a complaint. Just an issue for clarification. And an interesting one
> at that! Is it tradition, an intended limitation, that no one has done it
> before? I think the answer would be quite interesting!
>
> Thanks,
> Jim.
>
> -----Original Message-----
> From: Dick J [mailto:lsr_man@yahoo.com]
> Sent: Tuesday, May 21, 2002 9:59 AM
> To: autox list
> Subject: Number of Classes
>
> Just out of curiosity. Has anybody ever gone through the rule books and
> figured out exactly how many car and bike classes there are? I started to
> try that with the bike classes and the formula got way too complex for me.
> Trying to count them by putting check marks on paper was hopeless too
> because I had to keep going back and forth between engine sized, types,
> frame types, etc. The actual total number of classes must be phenominal.
>
> Dick J
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