[Ron Sutton]

Originally Posted by Chassisworks

Regarding the placement of the main hoop: Per NHRA rules the main hoop of a roll BAR must be within 6" of the helmet, vertically and horizontally, but it does NOT have to be that close when you have a roll CAGE. I do not know if this is the case with any other sanctioning bodies (NASA, SCCA, et al.) but thought it worth a mention.

Yes. When we used to install roll bars a lifetime ago, we mocked up the driver & set them 4" away from the roll bar main hoop. Didn't want the driver's head hitting the bar ... even with a helmet. In PT cars it needs to be 5" in my opinion.



Thanks Ron! There are definitely differences. The old Alston name is still around as 'Alston Race Cars,' mostly selling parts Chris designed in the '70s.
Yup. Yup. Exactly.


Interestingly, it was sold last year and purchased by one of our competitors.

Hmmm. Weird. Why would a company want to use the old Alston Race Cars name.