pics of my race seats and redline rollbar
08-16-2002, 07:58 PM
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Join Date: Jun 2001
Location: Buffalo, NY
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I've seen the John Hajny Redline bar. Very, very nice. IIRC, the bolts are essentially all in shear if a roll results in a major impact on the roof. IMO, this is the weakest spot of his design, which I must say is very elegant and well executed. Anyone know the size of the bolts?
The next improvement to this design is to add some removable members with a large base to rest snug against the chassis (o distribute the load so the bolts in the rear outboard lap bolt don't have to take the full load (in shear). I think this can be incorporated into John's design in a straightforward manner due to the current geometry of the tubing/pipe used in the B-pillar area. A little extra time to install, a little extra money, but it would be worth it to me.
As an aside, my recent (and first!) DE instructor is friends with John. I rode shotgun with my instructor while we followed John in his 944 NA around the track. My instructor was pointing out all the things I should emulate. Mr. Hajny is one very impressive driver to say the least. Any DE fans should checkout his website article on driving on the track.
Mike
The next improvement to this design is to add some removable members with a large base to rest snug against the chassis (o distribute the load so the bolts in the rear outboard lap bolt don't have to take the full load (in shear). I think this can be incorporated into John's design in a straightforward manner due to the current geometry of the tubing/pipe used in the B-pillar area. A little extra time to install, a little extra money, but it would be worth it to me.
As an aside, my recent (and first!) DE instructor is friends with John. I rode shotgun with my instructor while we followed John in his 944 NA around the track. My instructor was pointing out all the things I should emulate. Mr. Hajny is one very impressive driver to say the least. Any DE fans should checkout his website article on driving on the track.
Mike
