I've decided to splitt up from the previous post since I think it would be more constructive to be all on the same direction.
This tread is to discuss creating a North American version of the Formula 750 from the 750 motor club in the UK.
You can find out more about the class here: http://www.750mc.co.uk/F-750-formula.php
The F. 750 rules are here: http://www.750mc.co.uk/images/uploaded/2009%20Regs%20-%20750%20Formula.pdf
and here is there forum: http://www.750formula.co.uk/forum/
What we all agreed was that the engine would be a spec engine and it would be the 993cc 3 cylinder engine found in the Geo Metro and Suzuki Swift.
Here is the very basics
Spec Engine: Geo/Metro 3 Cylinders of 1.0L capacity...
Tranmission: 4-5 speed RWD transmission from any production car, cannot be sequential, No Transaxles
Differential: Can either in the form of a solid axle or from an IRS car. Must be from a production car. No LSD.
Chassis: Tubular steel spaceframe, can be pannelled with rivited and/or bonded aluminium of a maximum thinckness of 14 gauge. Honeycomb, kevlar or carbon fiber materials are prohebited as structural component of the chassis.
Kevlar, or carbon fiber can be used in non structural applications
In order to adapt the rules for here, we will need to adapt them the the GCR of the SCCA, NASA and ASN Canada FIA. these changes will be on the safety aspects. Rollcage requirements will be the same as those for sports racers. Personal safety requirements will be the same.
As for the weight of the car at first I tought of 900lbs including driver, but that was optimistic. I have since then thought of 993 lbs i.e. the same number as the engine capacity, also if you guys like the idea I would call this class Formula 993. This is not set in stone so lets discuss the minimum weight and name.
B85, wheel size was free. As for tire size I was thinking 8 inch maximum width. We are using full race slicks. When I look at the hoosier spec 8 inch wide tires are only available in 13 inch wheels, but there is a 5.5 inch wide slick in the 15 inch wheel diameter. If someone want to use tose tire then he could take 15 inch wheels. It's a builders decision.
Is everybody ok with race slicks or the size ?
DeanD3W: The UK rules state an open diff. With only 65HP at the most and 8 inch slicks wheelspin might not be such an issue, but it could.
We need to discuss the diff. Now one reason for open diff, is that most cars are equiped with open diff, so there would be an added cost if we allow them. also we would eliminate some available components if no suitable locking or LSD are not available for them.
Yes I'm building a car. I'm putting my money were my mouth is

I'm gonna start doing some lobbying among a few buddies of mine to convert them to this

Cheers,
Fred