At what speed is aero a good idea?, New bumper for #209 |
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At what speed is aero a good idea?, New bumper for #209 |
Jetsetsurfshop |
Oct 3 2016, 06:12 PM
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#1
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Senior Member Group: Members Posts: 814 Joined: 7-April 11 From: Marco Island Florida Member No.: 12,907 Region Association: South East States |
Hey Paddock People,
My car sustained some pretty good front end damaged and the 916 front bumper is destroyed. Thinking this is a good time to change things up. Good news is that already bought the bumper half with the oil cooler cut out. Now I need the bottom half to finish it off. The thought is should I run a splitter type valance? What is the speed where these cars want downforce? My car's top speed at Sebring is 115mph. I see a lot of HSR 914-6's that don't have a splitter and I know there are faster then I am. Another thought is that I'm not the only driver of the car and when we have an off track experience, will the splitter still be there?? (IMG:style_emoticons/default/beer.gif) |
brant |
Oct 4 2016, 12:13 PM
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#2
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914 Wizard Group: Members Posts: 11,623 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
sorry if this is getting off topic (spoilers)
but just another data point for brake temps. lots of variables so mine are: stock valance, not a low spoiler less weight than some cars much less speed... 125 is probably all I hit on short-ish tracks vented front 911 rotors, KFP carbon pads I ran temperature paint on my brakes front and rear I found that my front brakes with the smart scoops, and hub block off plate were running too cool for the operating range of my front brake pads I had multiple conversations with the engineers at KFP they verified all of my data, and also thought my pad compound choice was wrong I re tested after removing the air ducts (smart scoops... not true air ducts to a front spoiler) Still too cool for operating range Next I softened my front torsion bars from 22mm to 21mm in hopes of more weight transfer and better brake temperatures as a result. Still too cool for operating range next I went up one grade of pad compound to a softer pad, for lighter cars still too cool for operating range finally I went up a second grade of pad compound for yet softer pads Now I'm in the operating range my rears are solid rotors and still run much hotter than the fronts but I'm in the operating range and my brakes are better than they were both by seat of the pants, and also by traqmate data. I am convinced that I still have a tiny bit too much cooling, but am already running the softest pad made for my "S" caliper in the KFP brand. (I really have had great results running KFP's for 20 years) granted I'm running a 2.0 motor I'm not running Tony's kind of HP! but you can have too much brake cooling also guys brant |
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