Where to remove weight from a track only car?
#102
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We are working on it for a friends Solo XP S2000. We have already moved the heat exchanger for the A2W to the back.
For those worried about heat dissipation, if you use aluminum tubing under the car, it acts as an extra heat exchanger (add fins too for more surface area). We found on the XP car that the extra plumping dissipates a good amount of heat before it even gets to the heat exchanger (and that is just rubber hosing right now).
Yes, you are moving weight to the rear of car, but if you plan on the plumping under the car being part of the heat exchange, you can possible size your radiator down some as well. Thus the additional weight of the system would be minimal.
Ducting would be the big issue I see. In the XP car we are just going to put fan on there, but the car only see's 60-90 of time at full tilt.
For those worried about heat dissipation, if you use aluminum tubing under the car, it acts as an extra heat exchanger (add fins too for more surface area). We found on the XP car that the extra plumping dissipates a good amount of heat before it even gets to the heat exchanger (and that is just rubber hosing right now).
Yes, you are moving weight to the rear of car, but if you plan on the plumping under the car being part of the heat exchange, you can possible size your radiator down some as well. Thus the additional weight of the system would be minimal.
Ducting would be the big issue I see. In the XP car we are just going to put fan on there, but the car only see's 60-90 of time at full tilt.
#104
I'd be more worried about the ungodly long hoses filled with water than getting airflow through it. I mean the Lotus crowd seems to do just fine getting airflow through the back of the car, I don't see why it couldn't be done. But all that water weight is going to add up quick.
#106
is it possible to move the 15:1 rack and pinion from the powered steering rack to the manual rack housing? the manual rack looks lighter. (i do like the 15:1 ratio so would prefer to modify rather than use 18:1 manual rack).
or, even better, were there any years with 15:1 manual rack?
EDIT: looks like a 4 lb mod. i thought it was more. ref: https://www.miataturbo.net/showpost....3&postcount=23
or, even better, were there any years with 15:1 manual rack?
EDIT: looks like a 4 lb mod. i thought it was more. ref: https://www.miataturbo.net/showpost....3&postcount=23
Last edited by jasonb; 09-05-2010 at 12:11 PM.
#109
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Whole different class of car, both literally and figuratively. The bad *** track cars on here have full cages, which would look retarded without a windshield. Aero reasons too I'm sure.
Edit: Can't anyone make a stock (non-locost) chassis look decent without front fenders? This looks semi-open wheel and extremely badass:
P.S. I'm also making this thread a sticky, seems logical for future viewers.
Edit: Can't anyone make a stock (non-locost) chassis look decent without front fenders? This looks semi-open wheel and extremely badass:
P.S. I'm also making this thread a sticky, seems logical for future viewers.
#110
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We've cut out the rear shelf seatbelt towers are. Front windsheild and will be doing a **** ton of extra weight savings stuff.
#117
I believe the car he's refering to can be found here... http://forum.miata.net/vb/showthread...185365&page=13
#120
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No it was blue, but that one is nice too. All I remember is it was basically a car with no body panels. It didn't look like it conformed to any class like the above red one, it was mariner blue, and I believe on an autocross starting grid.