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Originally Posted by nitrorocket
Do the high speed guys use quick ratio steering boxes? I would think this would be bad at high speeds.
Thanks for some of the last few posts, very informative!
And for those of you who think I am a moron, Shut up! How many bikes run roll cages??? You are not dangerous if you don't have a cage and go 150 mph, would it be safer in case of an incident... Yes, of course! I am not any more dangerous going 150 mph in my car then every bike in the world, I would say I am safer in my car as it sits then on a bike. So if every bike rider crazy for going 150 mph with no cage?? All they have is a helmet, jacket, and boots!
Point is My car is very safe for what I have been doing, I dont have a roll cage, but everything else is up to standards, good tires, brakes, sfi approved parts, etc.
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A few thoughts for you. Having actually done this, learned from people I respected that had been at it longer than me and also seen some people die or get badly hurt, at an absolute minimum you need:
1. A cage - at least 6-point welded in
2. A REAL Racing seat - I've seen stock ones collapse
3. Seat mounted to the cage
4. 5 or 6 point harnesses properly mounted
5. Helmet and full driving suit
6. Fire system
7. Fuel cell - a real one w/ a kevlar bladder
8. Battery box (I've seen these get tossed 50 yards or so from crashes)
9. Window nets or arm restraints
10. Engine restraint
11. Was just starting when I was racing but wouldn't do it w/o now is a HANS or similar device.
Window nets or arm restraints are very important because in a crash you are a rag doll and unless there is a net or restraints your arms can end up outside the window when it is flipping/rolling. I preferred nets, because they have the added benefit of keeping debris OUT of the passenger compartment.
If you REALLY want to do this you need to:
1. Get the car safe
2. Get the car to handle
3. Start working on aero - you will never go straight to 200 MPH safely take steps
4. Get an engine package and driveline that will survive
5. Get some seat time at lower speeds
Number 4 takes much more than you will ever think
No way I'd be trying a gear vendors unit for this
With your turbo setup your biggest challenge will be heat soak running at WOT for extended periods
re: #5 going from 185 to upper 190's and above was a learning experience and took me a while to be totally relaxed at those speeds.
Re: quick ratio steering - it's almost irrelevant as you hardly turn the wheel at all taking a turn at those speeds. In theory it might be beneficial not to run a quick ratio box, but there are much more important areas to spend your money on. Also, if your plan is to go that fast, you can ultimately save money by building it for that the first time and swap less parts later.
John Buscema
XV Motorsports
www.xvmotorsports.com