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Re: Flywheel explosions

To: DGreimel@aol.com, DSRGR@aol.com, vintage-race@autox.team.net
Subject: Re: Flywheel explosions
From: JWoesvra@aol.com
Date: Wed, 16 Feb 2000 13:25:52 EST
In a message dated 02/16/2000 5:35:34 AM Eastern Standard Time, 
DGreimel@aol.com writes:

<< I seem to remember some requirement for heavy shields in SCCA at one time. 
>>


On reviewing my GCR's;

There is no mention of scattershields through 1966.

1967 GCR: Appendix A (Automobiles, General Regulations), (1.5.1,u) says:

"Scattershields - The installation of scattershields or explosion-proof bell 
housings shall be required on all cars where the failure of the clutch or 
flywheel could create a hazard to the driver."

The same listings is still in the 1987 GCR. I didn't check any more recent 
than that.

I have one of those ballistic nylon blankets on the GT6 and it came with the 
car when we bought it in 1996. The car has an SCCA log book back to 1972.

SVRA does not require a scattershield but I usually write something about 
them every couple years in the newsletter. We don't see many failures with 
the Tilton style clutches, but anyone with car that puts any vital part of 
your body in line with the projected trajectory of clutch/flywheel/driveline 
components should consider some sort of shield. Right-hand drive Minis can 
send parts directly into the groin area.

A broken u-joint can be just as frightening.

Rear engine cars probably don't need anything.

Just a few relevant thoughts.

Jack Woehrle
SVRA Technical Director 

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