[Land-speed] Definition of "Cowl"

[23weldon]

Mayf - I think you'll want to pose your question to Jon Meyer, the committee 
chair for GT/Modified Sports Classes. Contact info on pg 182 of the 2013 
rulebook.

If I were to create the definition I'd say it's that part of the body 
between the base of the stock windshield and the rear point of the hood.  So 
you form a ground plane based on the stock automobile's 4 wheel contact with 
the ground.  Drop a vertical plane at right angles to the front-rear 
centerline from the rearmost point of the hood. That defines the front of 
the cowl.  This could alternatively be defined as a curved surface following 
the rear profile of the hood as far forward as a tangent with a minimum of 
45 degree angle to the vehicle centerline.  (This accounts for hoods that 
have curved or angled rear corners)

The rear of the cowl would be defined by a simple (not compound) curved 
surface formed by lines vertical to the ground plane that intersect the 
bottom of the stock vehicle windshield glass in the normal driving 
position.(up).  The exception would be for doors whose front edge is forward 
of some part of the windshield.  In this case the adjacent part of the cowl 
would be the forward edge of the door profile.  In this case if a there is a 
finite line between the outer edge of the windshield and the inner edge of 
the door when viewed vertically from above then this line would form a 
vertical plane constituting the rest of the rear boundary of the cowl.

I think John Meyer will want to have the boundary lines sketched out for the 
more common bodies under his purview.  That's a bit of a project and I'm 
sure there's some quirky examples in there.  But now that we've seen what 
the modified sports classes are capable of I suspect there may be more 
interest and some bit of creativity there.

------ Ed Weldon
----- Original Message ----- 
From: "Larry Mayfield" <drmayf at mayfco.com>
To: <land-speed at autox.team.net>
Sent: Thursday, September 12, 2013 8:45 AM
> Ok, so I have a clunky Sunbeam Modified Sports vehicle.  Body is pretty
> much intact as when it left the factory 47 years ago.  I know from the
> rule book that I can modify the forward end of the car's body from the
> *cowl forward, including the cowl*, but so far, I can find no definition
> of what and where the cowl begins? Is there an official definition
> somewhere?  > mayf