Henry, on my TR3 I have the cowl hoop mounted to outriggers, but not the
stock ones. I have a plate welded to the top of the frame, projecting out,
and then gussets coming down to a larger plate,which is welded to the side
of the frame. At the outer end, they are also welded to the inner rocker
panel. You are welcome to stop by and see my car, next week. I will be
racing (it looks like in the rain) at Pocono this weekend.
With your bars, going rear to the wheel arches, you may want to consider
having them go back to the frame in the boot. This would be stronger, and
better to stiffen the frame. The bars would need to be at least at a 30
degree angle to the main hoop, and within 6 inches of the top of the main
hoop. On my TR3, they make it without having to cut the rear deck. You may
also want to run a diagnal bar from the top of one side of the main hoop, to
the bottom of the otherside, for more strength. My SCCA rule book is
already packed in the trailer, but I think SCCA would require it. I Know
that you are not racing SCCA but they require it for a reason. Joe
----- Original Message -----
From: Henry Frye <thefryes@iconn.net>
To: <fot@autox.team.net>
Sent: Friday, May 19, 2000 8:45 AM
Subject: Roll Bar Pickup Points
> Greetings,
>
> The '62 TR4 race car is looking pretty bare. It's amazing what a couple
> hours with a sawsall and a grinder will do. The old roll bar is off.
>
> Monday morning I take the car to a local fabricator to get the new cage
> built and installed. We are doing the main hoop, two legs dropping back to
> the wheel arches, crossbar between the two legs for the harness, and two
> side intrusion bars on each side terminating at a cowl hoop.
>
> The fabricator is concerned about where to pick up the frame for the cowl
> hoop. The body is bolted to an outrigger at the base of the A-post. The
> frame runs inboard several inches.
>
> Is it kosher to use the outrigger as the pick up point? Any modifications
> needed to the outrigger to beef things up? Or do we weld some plates to
the
> frame extending things outboard and go from there? If anyone has some
> digital pictures they are willing to send, that would be quite helpful as
well.
>
> As always, thanks a bunch.
>
> My ISP has decided that Mark's server name has changed, so please be sure
> to reply to me personally and to fot@autox.team.net
>
> Thanks Mark for the fast answer to my problem!
>
> Henry Frye thefryes@iconn.net
> http://members.iconn.net/~thefryes/amici.html
> Yellow TR4
>
>
>
>
>
>
>
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