well I do not know if 300mph will be in the cards with 215hp ac motor at 8,000 to 10,000rpm 1300lbs. with driver.I plan to use Hewland Mk9 5speed transaxle with FORMULA FORD uprights bolted to the frame no shocks or susp.
The currant record for EV1 is only 137mph a formula ford 2000 does that with 145hp on the back straight at Mid-Ohio road course!!
I think 200mph is very possible. \
would you use the same tires all around??
tire size?? steel wheels or alloy??
Lee
I'll give you a little input as your project interests me. This is just food for thought so use it or throw it away.
Personally I would look at steel wheels if money figures into the equation. Now you might need an alloy wheel to meet weight, as I feel building a 200+ mph car under 1100 lbs. is going to be a challenge. If you go the steel wheel route check the following folks out. I got my wheels from them and they have good service and prices and will help you build what you need:
http://www.mrt-wheels.com/I'm not familiar with that trans-axle, but after doing a search it looks like it was used in Volkswagens. On this site (
http://www.hewland.com/svga/productrange/hcmk9.htm ) they recommend no more than 150 to 180 lb/ft of torque, but on the salt you could probably make it work with probably at least 40% more than that. They show other gears, but I got the feeling they were the internal gears and not the ring and pinion. Are there different ring/pinion options available? I wouldn't want to only have one final gear available if it was me.
You quoted the this ring and pinion
ring&pinion(13.4/36)
if I understood it right, but don't know how you could have a 13.4 tooth pinion. If that is the ring (36) and pinion (13.4) teeth that would give you a final gear of 2.69. With that gear and 22 inch tires 8000 rpm would be 198 and 10,000 would be 245. With that gear and 24 inch tires 8000 would be 215 and 10000 270. Now that is if the 5 speed is not an overdrive and is 1 to 1 in fifth. I'm probably missing something about the trans-axle. It is easy on paper to say 8000 would do 198 and 10,000 would do 245, but if it took the 215 hp to do the 198 then it would take 407 hp to run the 245 at 10,000.
If you have some other numbers I could comment on them, but personally I think 215 won't run the 198 and you might be geared too high for speeds less than that, but this all revolves around the actual gearing of the trans-axle, which I don't have or understand.
On the tires why not go with the Goodyears (
http://www.racegoodyear.com/pdf/2006_price_book/eagle_dragway_special.pdf ) if you plan on running over 200? They are available and come in quite a few different sizes.
Are you sure you want a car with "no suspension"? Might mean you don't run some years
and can even help with wheel spin when the salt is good
.
Hope you don't feel I'm picking you apart, just trying to understand better what you are doing.
Good luck and keep us up to date with your progress,
Sum