Frame jig rear rails dimension

[Tomas 69Bee]

Im trying to build a frame jig for my 69 Bee, but I cant find dimensions for rear frames...I have found some drawings for 69-70 Bees and I have service manual for that year. But at both drawings there are missing some dimensions at rear frames. When there is a height at some mounting point, a width is missing... And what is interesting, those 2 charts dont correspond to each other. So Im litlle bit confused from this... please, does anybody have those dimensions? Thank you very much

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[TexasRoadRunner68]

Check out 521 restorations design…it’s on their site.

 

[Tomas 69Bee]

Thank you very much...
I have already seen this. It is great frame jig but they made a mistake. Front "X" point height is exchanged with trans.crossmember point height. So all Jig is little bit wrong...

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[Chris Many]

I didn't quite come up with the same dimensions as 521 restorations when I built my own jig. I think they designed theirs around a car instead of just the crash sheet.

1970 Panther Pink Satellite Restoration - Frame Replacement (relicrecyclery.com)

My car was so far gone that I had to start from scratch. If your frame rails are still intact I recommend building the base of the jig first and fine tuning the uprights (posts w/pins) to fit your car.

For me I mounted my rear frame rails on the jig and clamped the rear portion at the shackle holes at the J- 16-7/8" height while maintaining the 37-1/4" frame rail outside spacing. I then made some uprights to support the frame rails at the holes with the 35-1/2" center spacing. I think they were something like 13-1/2" tall (don't bet on that number). Then I got rid of the hardware I used to support it at the shackle holes.

 

[Tomas 69Bee]

Chris, thank you very much for your respond...
We have same opinion about 521 jig...
Actually Im not sure how my frame "looks",
so I would like to make that jig to be sure...
If nobody will know that dimensions I will try to make it like you did. "J " 16 7/8, 37 1/4 frame rail outside spacing and 35 1/2 center spacing. But, I will give a left hand for that rear center hole height ... One more time thank you...That was my idea if nobody knows the dimensions....Thank you