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Old 01-02-2009, 07:13 PM
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David Kirkham David Kirkham is offline
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Join Date: Mar 2001
Location: Provo, Ut
Cobra Make, Engine: Kirkham, 427
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Craig,

I am surprised the Vintage wheels won't fit over a Trigo rim???

The Trigo unit is 1 inch tall (not counting the taper) so with a 1/4 hex it would be 3/4" of engagement which is fine. The overall length of the Trigo is 1.188 inches.

We have 1/2" of engagement on our cars + 0.3 inches of lead-in taper. The thread on the hub is a 1/8 pitch so that means you would have to have the knock off back off 4 complete revolutions before the flat part of our pin didn't engage any more. With a knock off that far backed off, I would think you would certainly both hear and feel something. Remember, with these cars, if something feels funny, IT PROBABLY IS!

Hopefully, everyone checks their knock offs BEFORE they drive down the road and not when they see their wheel passing them by on the freeway.

I would imagine if the Trigo units are 1 inch long (not counting the taper) then for the Vintage wheels are probably counter bored deep enough to accept the Trigo units--though someone would certainly need to check this.

Perhaps we could just make the Vintage (flat-bottomed pins) a little longer to make up for the difference.

David
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David Kirkham, President Kirkham Motorsports
Manufacturer Aluminum Body Kit Cars and supplier to Shelby* for their CSX4000, CSX7000, and CSX8000 289 and 427 Cobra
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Last edited by David Kirkham; 01-02-2009 at 07:17 PM..
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