national #2 atv open

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Baron of the Hill
Baron of the Hill
Posts: 21

national #2 atv open

Post#1 » Wed Oct 20, 2010 10:07 am


We have a rider our way that was going to build a engine like yours with the montoon cases but ama { your friends }
say that those cases are not factory so you can,t use them. Let me know if you talked to them about this.



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The Mack Daddy
The Mack Daddy
Posts: 668

Re: national #2 atv open

Post#2 » Wed Oct 20, 2010 3:34 pm

The AMA rulebook states:

Motorcycles and ATVs must use the crankcases of the production engine.

Which is a silly rule that someone should submit a request to get removed. Note that it's the same for motorcycles and ATVs.

On the other hand, as I've pointed out before, there are no ATV hillclimb classes listed in the AMA rulebook...just like there's no Micro Mini class listed either. Therefore, any such classes are by definition exhibition classes...and since exhibition classes are at the discretion of the promoter, I'm going to reckon that his cases aren't going to pose a problem.

Also, the AMA hillclimb rules have this entry:

Open multi-cylinder motorcycles that do not conform to Sportsman standards. In this class, multi-cylinder motorcycles of all engine sizes run without handicap.

...which, I believe, could also be applied to ATVs such that if an ATV is found to not conform to Sportsman standards (like, maybe it doesn't have stock cases), then it has to run in an "Open" class - which *might* a class defined as "ATV" without displacement limits is an "open" class. Or, if the class was called "2-Stroke ATV" - or if it was "Veteran ATV" long as it wasn't displacement capped, it might be considered an "open" class. If the class was called "ATV Open" then definitely.

Serf of the Hill
Serf of the Hill
Posts: 1

Re: national #2 atv open

Post#3 » Fri Oct 22, 2010 8:18 am

You are correct motoman, AMA concurs with your answer

George L

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