Projects 28/29 Model A Roadster Floor Frame Plans

I have been collecting parts for the last few years hoping to make a start on a 28/29 Model A Roadster. I like to make all of my own patch panels instead of buying repo to keep costs down and to keep in the tradition of the hobby. I would like to make my own floor frame but cannot find plans or dimensions anywhere. Can someone help a brother out and point me in the right direction.

 

I'm about to start the same thing on a 30 model a roadster, I built the frame to the specs on wescotts website, and have squared up, braced and removed the subframe from the body. At that point I'm just going to mock the body up where it looks right and connect the dots. I just don't know that plans will do you as much good as jumping in and figuring it out. Do lots of mock-ups with as many parts as you can and don't be afraid to redo something if it isn't right.

 

I'm doing the same thing on a 31 coupe (the roadster is in parts hanging on the wall) that came with a homemade pair of rear floor rails. They had a fair crown and were bowed from welding and the guy as well as some of my buddies said they couldn't be straightened. Being a retired jeweler, among other things, I know better. Any metal can be straightened in the right hands. Don't know of any plans for them but if you have the old ones or access to some they shouldn't be to hard to make. There is not much to them.

 

Hera is some measurement I did on a rusty one,

 

I did this last year using brookville subrails and the cross braces. Made it a lot easier. I built the whole frame and squared it on a huge flat work bench, but then when i tried to install it it wouldn't fit as it tapers at the front, which i guess i never realized. Wasn't too hard to fit it and square it up with the cowl but a bit of rooting around.

My advice, spend the few hundred bucks on the brookville stuff as its really nicely made and looks as original as its gonna get. Put the cowl on a flat sturdy bench and put the subrails in, bolt em in and square them up diagonally and put the center braces in.

I'd use em again if i was to ever build another Model A.