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03-15-2012, 12:52 PM

#221

Mobius

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So 80-85 ft/lbs when hot ends up being too much? Or too little.

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03-15-2012, 12:59 PM

#222

triple88a

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When hot, metal's expanded, when it gets cool it will shrink causing loose wheels.

Last edited by triple88a; 03-15-2012 at 01:49 PM.

03-15-2012, 01:02 PM

#223

emilio700

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Quote:

Originally Posted by Mobius

So 80-85 ft/lbs when hot ends up being too much? Or too little.

Possibly too little. We have torqued hot occasionally in the past without issue even though it's the wrong way to do it. We're always learning..

Quote:

Originally Posted by triple88a

When hot metals expanded, when it gets cool it will shrink causing loose wheels.

Exactly.

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03-15-2012, 03:18 PM

#224

comradefks

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Is the timing to torque the wheels just before going out for a session/race? That would be as close to cold as you can be.

03-15-2012, 03:25 PM

#225

emilio700

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Quote:

Originally Posted by comradefks

Is the timing to torque the wheels just before going out for a session/race? That would be as close to cold as you can be.

Yup

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03-15-2012, 10:00 PM

#226

emilio700

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Pic from last weekend.

Attached Thumbnails

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03-15-2012, 10:07 PM

#227

doward

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Please color match that airdam?
Looks very composed!

Ps. When did the composite windshield go in?

03-15-2012, 11:20 PM

#228

mx5-kiwi

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I agree, some orange vinyl or paint........

I loved the first video, sat entranced the whole way through. Have to watch the others as soon as I get home from work.

03-15-2012, 11:30 PM

#229

emilio700

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Quote:

Originally Posted by doward

Please color match that airdam?
Looks very composed!

Ps. When did the composite windshield go in?

Air dam is temporary. One piece Kevlar/FRP nose with integrated air dam almost ready. This car was built with polycarbonate windows.

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03-16-2012, 01:43 PM

#230

JKav

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Quote:

Originally Posted by emilio700

Some fun last weekend. Won the enduro and sprint race, only because no one else entered. Still, a win is a win.

Wet restart in the enduro. A few laps on wet track behind the pace car on 2 hour old R6's = zero grip. A great opportunity to channel Senna a bit and run away from everyone in the field except the Radical. Good fun.

[snipped vid]

Saturday sprint race, harassing some faster GTS BMW's. None of the other PT cars were anywhere close so I had to find someone else to play with.

Broke two improperly torqued wheel studs just as I caught the BMW I had been chasing. Doh!

[snipped vid]

Lively in the carousel !

Really nice driving.

05-13-2012, 09:49 PM

#231

emilio700

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Some pics from testing at ACS last weekend. Nose and fenders are Kevlar/FRP. Not pretty but very low drag and generate a bit more downforce. The nose is rounded to get more air around the sides and less over the top. Even so, the nose seems to make the wing work better. My guess is there is less detached flow over the hood now so the air going over the roof stays a bit more attached. That in turn feeds the wing slightly higher pressure and more coherent air mass. The aero balance was good with this set up. We experimented a bit with diff set up and went backwards there however. We had a bit of power oversteer at small throttle openings and this car isn't making a lot of power.

It's a bit too low in front so we'll take about 3/4" off the depth and add quick release clamps so we can get it on and off in a hurry if needed.