SixStarCars' 818R - NASA ST3 - SCCA Solo X Prepared Build Thread

[SixStar]

My kit also came with one of each, I sent back the angled one and they've sent a strait. Did you consider making the RMIC and wing mount from aluminum?

We could. There are two issues there, attaching it to the steel strut tower bar will require a slip fit and hose clamps or bolts adding fabrication time and cost, and I'm not certain the aluminum would be able to support a wing.

The maximum potential downforce you can get with a GTC300 wing is just over 1500lbs. running at 120mph. Now we all know that WON'T happen with our cars, but we did build our mount out of chromoly and "tested" it with about 700lbs of humans standing on the back, it was cozy

If all you wanted was a trunk it would be perfect for that. I have a fiberglass guy coming by Monday to help brainstorm some trunk options.

[Santiago]

The maximum potential downforce you can get with a GTC300 wing is just over 1500lbs. running at 120mph.

Not sure where you got that figure, but APR's own CFD data shows a maximum downforce for the GTC-300 of 2,049.43 N, which converts to approx. 460 lbs at 120mph (12AOA). They published the data here.

[Bob_n_Cincy]

Not sure where you got that figure, but APR's own CFD data shows a maximum downforce for the GTC-300 of 2,049.43 N, which converts to approx. 460 lbs at 120mph (12AOA). They published the data here.

he is stacking 3 wings.

[SixStar]

Not sure where you got that figure, but APR's own CFD data shows a maximum downforce for the GTC-300 of 2,049.43 N, which converts to approx. 460 lbs at 120mph (12AOA). They published the data here.

2049 Newton Meters is 1512 Ft/Lbs according to the calculator I used.

I'm missing something here.

[wleehendrick]

I'm missing something here.

you're missing 'g'.

You're not converting torque, your converting Force (N) to mass (lbs); the conversion (4.4 N to a pound) assumes standard gravitational constant.

edit: yes, lbs is force too, kg is mass