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57_BN4
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Hi Guys,
I'm doing some work to resurrect an old race car that was last campaigned in the 70s. It is fitted with a home-made rollcage that isn't of a particularly good design, nor does it look very well constructed.
There is a front hoop welded across the heater plenum box under the dash and turns down to meet the front outriggers (no reinforcing, just arc welded onto the floor next to the hinge pillar). The main hoop picks up the rear outriggers next to the shut pillar, again just welded to the floor and has two intrusion bars each side running forward to the front hoop across the door openings. There is a third bar across behind the seats for the harness mounts and the main hoop is tied back to the top of the rear bulkhead with bolted plates. The doors are bolted shut as they are pretty much useless with the side beams occupying the openings.
Has anyone got pics of a good 4 seater Healey rollcage design? The doors will be made functional again so the car can be road registered which means the side impact bars have to go or be lower down. Ideally when finished it will fit under a factory roadster hardtop and look something like this from the outside.
How important is it to tie across the door openings for structural rigidity in a Healey? I see a few bolt-in half cage designs which have nothing forward of the shut pillar and obviously don't add anything to the strength of the car, is this a better approach? The car won't be used for anything more than weekend club racing as it is more of a semi-retirement project.
Andy.
I'm doing some work to resurrect an old race car that was last campaigned in the 70s. It is fitted with a home-made rollcage that isn't of a particularly good design, nor does it look very well constructed.
There is a front hoop welded across the heater plenum box under the dash and turns down to meet the front outriggers (no reinforcing, just arc welded onto the floor next to the hinge pillar). The main hoop picks up the rear outriggers next to the shut pillar, again just welded to the floor and has two intrusion bars each side running forward to the front hoop across the door openings. There is a third bar across behind the seats for the harness mounts and the main hoop is tied back to the top of the rear bulkhead with bolted plates. The doors are bolted shut as they are pretty much useless with the side beams occupying the openings.
Has anyone got pics of a good 4 seater Healey rollcage design? The doors will be made functional again so the car can be road registered which means the side impact bars have to go or be lower down. Ideally when finished it will fit under a factory roadster hardtop and look something like this from the outside.
How important is it to tie across the door openings for structural rigidity in a Healey? I see a few bolt-in half cage designs which have nothing forward of the shut pillar and obviously don't add anything to the strength of the car, is this a better approach? The car won't be used for anything more than weekend club racing as it is more of a semi-retirement project.
Andy.
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