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Messages - OCTARD

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226
For those that get the SPEED Channel, an episode of Hot Rod TV will feature a segment on the Historic Trans-Am cars that run on the west coast of the United States.  The show will air this Saturday at 7:00AM Pacific, 10:00AM Eastern.

The segment was created from footage shot at the 2010 Coronado Speed Festival.


227
Trans-Am Camaros / Re: Wheels used on Trans-Am Camaros
« on: April 15, 2011, 01:30:41 AM »
Hello Mike,

The Motor Wheel Company "Spyder" has a similar look, but is definitely different than the American Racing 6-spoke ("TA 70") wheel noted above.  Here are a couple shots of the Motor Wheel Company "Spyder."


-Chad

228
Trans-Am Camaros / Re: Wheels used on Trans-Am Camaros
« on: April 14, 2011, 03:15:02 AM »
Another forum member noted that he could not view the link above to the Mike Folsom '70 Boss 302, now owned and run by Craig Conley.  Here is a link that shows multiple pictures of this car running both Minilites and the American Racing 6-spoke "TA 70" wheels.

http://www.historictransam.com/Drivers/CraigConley.htm

-Chad

229
Trans-Am Camaros / Re: Racing seats
« on: April 14, 2011, 01:11:10 AM »
The two attached scans are pages from Paul Van Valkenburgh's excellent book, Race Car Engineering & Mechanics.

Amongst Van Valkenburgh's suggestions on driver "Fitting and Comfort," these pages also contain a picture of the Racemark seat, and a note about it's designers (Van Valkenburgh and Donohue).

-Chad

230
Trans-Am Camaros / Re: Wheels used on Trans-Am Camaros
« on: April 13, 2011, 11:43:37 PM »
Hello Jon,

I've had a couple knowledgeable folks refer to these wheels you show on the Stan Bennett Camaro as the American Racing "TA 70" wheel.  Some of the following cars ran/run them (with links to each car where more pictures of the wheels can be seen):


-Chad

231
Trans-Am Camaros / Re: Racing seats
« on: April 10, 2011, 05:21:00 AM »
Hello Jon,

Great new additions to this thread.  

I wonder if the cage in the John Elliott '69 Camaro was meant for another application originally.  The downward slope of the bar that goes from the main hoop to the a-pillar area is more than demanded by a Camaro shell.  I don't want to sell the constructors short though.  Perhaps they were ahead of their time, and trying to get the cage as low in the chassis as possible for better weight distribution (as in a modern DTM... or well built SCCA World Challenge car).

I've also never seen that shot of the aluminum seat in Donohue's '70 Javelin.

Excellent stuff.

-Chad
 

232
Trans-Am Camaros / Re: Wheels used on Trans-Am Camaros
« on: April 08, 2011, 03:53:06 PM »
Hello Jon,

I don't know the answer to your question.  There will surely be someone that visits this forum that does.

-Chad

233
Trans-Am Camaros / Re: Racing seats
« on: April 08, 2011, 01:59:50 AM »
Hello Robert,

The Racemark seat ad is showing Mark Donohue's 1970 AMC Javelin.

-Chad

234
Trans-Am Camaros / Re: Racing seats
« on: April 07, 2011, 07:33:56 PM »
Hello Jon,

The story behind the Steve Sunshine seat actually stems back to a Shelby style racing part.  I was visiting a friends shop, and they had a Cobra in to do some general race prep.  The Cobra owner had bought a Ken Miles edition Steve Sunshine aluminum racing seat.  What really caught my eye was the metal shaping, and all the care and attention that went into copying the contours of the original fiberglass seats.  So many of the other aluminum seats out there that are made to look like an old race seat are made up of many pieces of flat stock cut and welded in smaller sub-sections to build a radius.  They don't end up looking right to me.

I had long thought it would be nice to have a replica of the GM Racing seat in aluminum because of the additional bit of safety it might offer.  The original fiberglass shell is only bonded to the steel frame by a few pieces of fiberglass and resin.  With an aluminum seat, I feel you can more securely fasten it to any of your additional mounts or braces. 

So, I contacted Steve Stunshine and asked him if he'd be into making a copy of one of these old GM racing seats.  Steve was up to it, and even had a go with only measurements the first time around.  That first unit missed the mark a bit, and so I sent him a replica shell of the original GM racing seat to copy.  That second unit (and Jon's third) turned out very nice.  And though Steve's upholstered cover is intended to copy the design and layout of my original, his fits better and tighter than the covers on the original GM racing seat. 

Here is the last e-mail I have for contacting Steve Sunshine: KenMiles@comcast.net

I've also attached a picture of the Steve Sunshine replica GM racing seat in my car.

-Chad

235
Trans-Am Camaros / Re: Wheels used on Trans-Am Camaros
« on: April 07, 2011, 06:19:53 PM »
Hello Jon,

With 30lbs of air pressure each, and sitting on the ground with the weight of the car, the tire diameter was measured as:

  • 15 X 9 Cheater: 24 1/2" tall
  • 15 X 7: 24 7/8" tall

Again, both wheels using Goodyear Blue Streak Sports Car Specials (vintage race tires).

-Chad

236
Trans-Am Camaros / Re: Wheels used on Trans-Am Camaros
« on: April 06, 2011, 10:42:05 PM »
Hello Mike,

I agree with your assessment of how easily these wheels could be noticed by a tech inspector.  Though I know next to nothing of the old SCCA Trans-Am tech inspection process, and I'm not sure these wheels were ever used in competition, perhaps it would have been possible to never let the tech inspectors see them up close.  In other words, stash them in the trailer, and only use the cheater wheels:

  • During qualifying, after you've passed tech... And change them in the hot pits, within the session.  Don't start or finish the qualifying with the cheater wheels.
  • After the first pit stop within the race.  And preferably, get them back off the car before the end of the race.  With ~300 mile races, multiple pit stops were a reality.
 
Here are a couple more pictures of the wheels off the car.  Again, these wheels are both running the exact same tire.

Perhaps Mr. Barg can tell us if he believes they would have been possible to get these by an SCCA Trans-Am tech inspector.

-Chad

237
Trans-Am Camaros / Re: Racing seats
« on: April 06, 2011, 08:47:06 PM »
Here is a link to a picture of a further drilled Racemark seat used in Donohue's 917/30 (And it also looks to be a Racemark steering wheel that someone has black wrinkle finished in this 917/30).

  http://www.ultimatecarpage.com/pic/422/Porsche-917-30_5.html

I've also attached a horribly old, low quality scan of a Racemark ad for these seats.  When I get the chance to find my old pamphlet of Racemark, Fypro and Mark Donohue Performance Products, I'll surely take some better scans.

-Chad

238
Trans-Am Camaros / Re: 1969 CAMARO Z/28 FIA Recognition Form 5293
« on: April 06, 2011, 06:43:44 PM »
Page 13 and 14.  There are 14 total pages in my copy of these forms.

239
Trans-Am Camaros / Re: 1969 CAMARO Z/28 FIA Recognition Form 5293
« on: April 06, 2011, 06:41:44 PM »
Page 11 and 12.

240
Trans-Am Camaros / Re: 1969 CAMARO Z/28 FIA Recognition Form 5293
« on: April 06, 2011, 06:40:18 PM »
Page 9 and 10.

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