[Land-speed] rollcage welding

[Benn]

Thanks for the response, Dave.
I don't think it'll be possible to get more than the main bar with some 
sleeve stubs removed from the car temporarily--any significant extensions 
just won't have enough room to maneuver.

I do kinda like the "slide it forward" approach:   But I'm trying to get the 
main hoop as tall as possible, and that means it fits behind the roof 
reinforcement at the rear of the T-tops.  I also only can move it forward 
about 4" (need up to 8" to get the main hoop into the door opening) without 
moving the front hoop closer to the main hoop, since the front hoop will 
othewise run into the A-pillar.

Hmm, maybe the main hoop could be pivoted about its top without the front 
hoop attached.   Some puzzle-fitting may work by moving some bar positions a 
few inches...  Thanks for the thoughts--I may need to use some combination 
of all these approaches.

So is the implication that I'd need at least "several" inches clearance to a 
wall to get a good weld around the circumference of the side bars?
Benn


----- Original Message ----- 
From: "Dave Dahlgren" <ddahlgren at snet.net>
To: "Benn" <karhu at california.com>; <land-speed at autox.team.net>
Sent: Thursday, February 26, 2009 10:22 AM
Subject: Re: [Land-speed] rollcage welding


> Couldn't you tack everything to the main hoop but don't permanantly mount 
> it in the car. Pop it out  or slide it forward do the outside welds then 
> drop it back in or slide it back with the door bars attached to the hoop?
> ----- Original Message ----- 
> From: "Benn" <karhu at california.com>
> To: <land-speed at autox.team.net>
> Sent: Thursday, February 26, 2009 12:28 PM
> Subject: [Land-speed] rollcage welding
>
>
>> Planning the rollcage for the MR2, and want to plant the main hoop as far
>> outboard as possible.  BUT, since it's behind the door opening, there is 
>> no
>> way to weld the horizontal side (door) bars fully to the main hoop if it 
>> is
>> hard against the interior body panel.  So, the question is, what is the
>> minimum clearance I can get away with and allow a good welder (not me) to
>> still be able to weld the bars around their full circumference?  A half 
>> inch?
>> full inch?
>> Benn
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