reminds me of these rims
Possible Alternative to Aero wheels
935 | HRE Performance Wheels | Luxury Street Motorsport
Possible Alternative to Aero wheels
935 | HRE Performance Wheels | Luxury Street Motorsport
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Have you noticed any issues with the wheels being out of balance with them on? Otherwise I like the idea of being able to remove/add them as needed.
I wouldn't think there would be. Pizza plates are fairly uniform being stamped from a piece of metal that has reasonable thickness tolerances. Also there isn't much weight around the circumference of the pizza plate. The fasteners aren't close to the rim either. I wouldn't expect balance problems at any legal speed.
I did run a series of three hard 60-0 stops and measure the disk temperature w/o the cover 163F and with the cover 201F so it is definitely affecting the rotor cooling.
Someone found 19" turbine wheels, anyone trying to get or have found alternative aero wheels?
Just curious.
No balance issues but as I noted I was very careful to center the covers. If they were off center then they would definitely be an imbalance wobble. This is a real down side to not having the rim lip to mount to like a conventional wheel cover.
I have more concerns with the cooling as noted the front heat exchangers vent into the wheel wells so in addition to brake cooling the battery/powertrain cooling is vented here.
I did run a series of three hard 60-0 stops and measure the disk temperature w/o the cover 163F and with the cover 201F so it is definitely affecting the rotor cooling.
There has to be a sweet spot for cooling your rotors versus increase in aerodynamics. How large of holes can you get away with while maintaining most of the aero gains?
Since drag increases due to speed, I'd be curious how much energy you're saving at highway speeds of 75 MPH and 80 MPH. Even with your 6.5% increase you're getting 280 miles out of your pack using the EPA numbers.
Where are you parked that there are what look like 100 liter cryogenic dewars in the background?Tested some simple disk wheel covers. They're not too pretty but reduce energy consumption about a 6.5% at 60 mph. I was cautious not to use the brakes and over heat the rotors as they have no vents at all. I will need to do some more extensive testing speed vs energy consumption and possibly measure rotor temperatures with & without covers after a stop.
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Where are you parked that there are what look like 100 liter cryogenic dewars in the background?
That would seem to be a very elegant, simple, and efficient solution.Makes me think there could be a system using centrifugal force instead of electric power. Weighted sections with light springs that are forced closed above say 45 mph.
http://media.ford.com/images/10031/AtlasConcept.pdf
"Active Wheel Shutters Automatic shutters in the wheels are hidden to improve style at rest and low speeds, but automatically close at highway speeds to help improve aerodynamics. Self-charging batteries from wheel motion provide shutter power"
This would be great for the Model S. Show off the fabulous brake calipers and provoke cooling at low speed or stopped, and also get more highway miles.
GSP
I've done a few 200+ mile runs and they do give me about 30 miles more range. However I find there's a great temptation to just drive 5% faster.
I don't love the aesthetic of the pans I tried painting them black but that doesn't work for me either, you need the whole blacked out car then.
I'm toying with the idea of having some friends make up carbon fiber disks, but I'm loving the shutters.