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Thanks for comments.
Making more would be problematic, at least the way I did it. The plates that bolt to the frame required a lot of massaging with a BFH in order to conform to the somewhat complex shape of the frame. To be mass produced it would probably be better to revert to machining from aluminum billet after modeling the things in a CAD program (which I did a lot of in a former life).
As for the thickness of the frame rails, I measured it where I drilled the holes. about 5mm at the upper bolt, 4mm next one down, 3.5mm bottom. I too was nervous about relying on threads into the aluminum, rather than through-bolting. I'm still not crazy about the idea but I figure if the bolts start loosening I'll give in and take the bike apart, drill out the threads and install longer bolts. Meanwhile I'll monitor them.
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Lars Pedersen
2002 R1100S Prep, still soldiering on. Need to ride it more.
1970 Ford Bronco, far from stock; 2005 Subaru Outback wagon, departed, don't miss it. Replaced by The Storm Trooper, AKA a bone white 2019 Jeep Grand Cherokee Upland.
Vans RV-7 flying as of June 24, 2012; Too many bicycles to list.
Last edited by Lars; 12-07-2018 at 09:03 AM..
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