Clayton Posts Thunderhill Photos

After completing several other site updates, web producer Tom Clayton finally made available 184 photos from last weekend's double National races at Thunderhill Raceway in Willows, California.

Clayton took 72 of the photos, while Chris Plescia's wife provided the balance with shots taken on Saturday.

There are many close up photos of Stohr cars, with several examples of different aerodynamic theories demonstrated.

Most, if not all, of the top contenders from the weekend, in both CSR and DSR, are captured. Rennie Clayton is seen in technical inspection before Sunday's activities as disccussed in Tuesday's "rumor". He is also pictured on the left with John Chism (in the middle) and John Hill (on the right) in the CSR podium shot.


Thunderhill Nationals Photo Album

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Loyning Debuts Latest Viking CSR

Loyning's Engine Service showed the latest version of their Viking CSR conversion kit for the Swift 008 model Formula Atlantic chassis. Photos of a converted 008 appeared on Loyning's new web site. The conversion is very similar to their previous bodywork for the Swift DB4 chassis which was used by Tony Loniewski to win the SCCA's 2004 CSR National Championship.

This offering is a kit for customers to convert their own existing Swift chassis. At this point Loyning's is not offering converted cars as rollers or turnkey cars.

Arnie Loyning continues to offer championship winning engines for Toyota Atlantic, Sports 2000, Formula Ford, GT3, DSR, and CSR. Engines serviced include Cosworth YAC, Yamaha, Suzuki, Corvette, and Spec Miata. Loyning's offers Superflow chassis & engine Dyno's, and race car maintenance.

See more details on the Swift Viking Chassis page.

For information contact:
Arnie Loyning at
Loyning's Engine Services
9125 SE 64th Ave
Portland, OR 97206
Loyning@aol.com
503.775.2999
503.775.3412 fax

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Tunnels for DSR & CSR Cars

Lee Stohr Cars is producing new molds for Lee's newly designed DSR/CSR racer. Some of the parts on for the new design cars may fit the older Stohr cars. Les says, "Last month we built a new 'tunnel' floor mold. John Hill fitted the first floor to his DSR and dominated the Thunderhill Double National last weekend [in California]. He lowered the track record by 2.2 seconds. This was the first time out with the new floor, and with testing it will only get faster."

Tunnels are not new this year to the sports racer classes, having been seen on various car at the 2004 SCCA Runoffs. Tunnel were used on Jacek Mucha CSR converted from a Formula Atlantic Ralt, on Loyning's Championship CSR converted from a FA Swift, as well as on John Hill's CSR/DSR Stohr and Bill Maisey's DSR Cheetah.

Lee added, "Our floor design is based on the old Group C/ GTP tunnels. Those shapes are in the public domain, and not patented. Some Stohr owners have already built their own tunnel floors.

I have a proprietary drawing produced 2 weeks ago which defines my actual floor part. An engineer must define ply number, orientation of fibers, core thickness and density, among many other things. I am not aware of any other DSR manufacturer with such a design or drawing.
We have sold 5 of my new floors as of today. For the lap time gain, it is far cheaper than a hot engine.

Now that the SCCA has approved ground effect downforce in CSR and DSR, it will be hard to win without it."

Lee Stohr Cars is also offering a revised front splitter/diffuser, carbon fibber rear wing, and suspension control arms with improved geometry for his new design, as well as for previous Stohr designed cars. For further information contact:

Lee Stohr Cars
6440 SE Crosswhite Way
Portland, OR 97206
leestohr@teleport.com
503-775-1114
503-775-1116 fax

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CRB Wants Input on DSR Weight

The SCCA Club Racing Board has requested input on the idea of increasing the minimum weight for the DSR class from 900 lbs. to 1000 or 1100 lbs. The call went out for feedback from the club membership as published in the Fast Track section (see page F-50) of the April edition of SCCA's Sports Car mazagine.

"Based on observed and measured weights and current car construction practices in DSR, the CRB is looking for member input whether to increase weight in DSR motorcycle motors to 1,000 lbs or 1,100 lbs."
The current rules read, "Minimum weight of all chain and belt-drive [DSR] cars is 900 lbs, with driver. All other [DSR] cars are 1000 pounds, with driver."

Please write the Club Racing Board via email at crb@scca.com, or using standard USPS mail at:

Club Racing Board, P.O. Box 19400 Topeka, KS 66619-0400.

It is recommended that you include your

• Name
• SCCA number
• Position with regard to DSR: owner (past, present, future), driver (past, present, future), manufacturer, interested party, etc.
• Opinion on the proposal
• Reasonings supporting your opinion
  

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