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Rear wheel arch or not...

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AluminiumStork AluminiumStork's Profile Novice Typer Posts: 19 Joined: Sat Jun 08, 2013 4:24 pm	Posted: Tue Jun 11, 2013 2:41 pm Quick question: So far I have only seen in person open (arched) rear wheel body. But I notice that there are covered rear wheel panel... Is there a reason for this (aerodynamics) and would or does it make a difference? I searched the Forum but could not find any answers on the subject.
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Bill Parenteau Bill Parenteau's Profile Needs a Life!!! Posts: 228 Joined: Wed Dec 28, 2011 6:21 pm Location: Stillwater, Mn Chassis: 784	Posted: Tue Jun 11, 2013 3:14 pm I could be wrong but I believe it is required by the regulations to have the wheel opening cutout. It was mostly an aesthetic thing, as well as access to the rear wheel.
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Racer X Racer X's Profile Needs a Life!!! Posts: 766 Joined: Wed Nov 30, 2011 1:03 am Chassis: 098 Facebook Page: http://www.facebook.com/#!/denny.stripling	Posted: Tue Jun 11, 2013 3:42 pm Yes, the wheel cutout is required. Aesthetics, as Bill states, plus I believe the Goodyears run a touch wider at the sidewall and had more issues rubbing than the old Yoks (even though they are both 205's). Can't say that's for certain though... just rings a bell that that was the case. ____________ Bay 12, please.
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Bill Parenteau Bill Parenteau's Profile Needs a Life!!! Posts: 228 Joined: Wed Dec 28, 2011 6:21 pm Location: Stillwater, Mn Chassis: 784	Posted: Tue Jun 11, 2013 4:05 pm Denny is correct on the Goodyear rubbing. Unless you gave the rear far less camber than required it would rub all of the yellow paint off the sidwall.
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Needs a Life!!!

Posts: 767
Joined: Wed Nov 30, 2011 12:21 am

Chassis: 595

Posted: Thu Jun 13, 2013 7:41 am

From the June GCR: http://scca.cdn.racersites.com/prod/ass ... 0-June.pdf

k. Required Bodywork Modification:
A 22.5” diameter wheel arch shall be cut in each side of the tail section. Viewing the tail section from the side, draw a vertical line at the drive axle centerline. Locate the top of the wheel arch at a point measured from the bottom edge of the tail section 9.25” vertically along the centerline. The 22.5” diameter circle inter- sects the bottom edge of the tail section 11.1” either side of the centerline. The tail section may be reinforced in the forward and aft portions of the wheel arch. Dimension tolerance is +/- 0.75”.

Bob Breton - SRF 51 - San Francisco Region

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GregCirillo GregCirillo's Profile Needs a Life!!! Posts: 484 Joined: Thu Dec 01, 2011 11:26 am Location: Rockville MD Chassis: 298	Posted: Thu Jun 13, 2013 11:47 am breton wrote:From the June GCR: http://scca.cdn.racersites.com/prod/ass ... 0-June.pdf The tail section may be reinforced in the forward and aft portions of the wheel arch. This is so you ensure that it cracks in the top/middle of the wheel arch.
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steve kramer steve kramer's Profile Needs a Life!!! Posts: 511 Joined: Tue Nov 29, 2011 10:12 pm Location: Texas Chassis: 821	Posted: Thu Jun 13, 2013 3:20 pm GregCirillo wrote: breton wrote:From the June GCR: http://scca.cdn.racersites.com/prod/ass ... 0-June.pdf The tail section may be reinforced in the forward and aft portions of the wheel arch. This is so you ensure that it cracks in the top/middle of the wheel arch. HA!
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