Thread: How to build an early hotrod frame

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Originally Posted by Dave Severson

Seems like a lot of engineering to me.... If the height is too low to make up for it with spring adjustment, get a stronger spring....

I have a pair of solid bars set to the mid point of the coilover travel, then when the car is a roller I mock up the components and ballast to equal the total finished weight, set it on the scales and call QA-1 to get the right rate spring... The techs do this stuff for a living and are good at it, so I use their knowledge. Maybe that's taking the easy way out?????

I like scaling them, that's probably the dirt tracker coming out in me though.

The engineering looks great for the sedan, Brian. Going to be a nice car even if IMO the BBC is going to make getting the front to rear weight anywhere's near right. Hopefully he's using a lot of aluminum components on the engine?????

The Dirt Tracker in me says use adjustable coilovers and crank it down til the height is right! Though this should be pretty predictable by spring rates. Springs are rated as what amount of weight it takes to compress the spring one inch. Simple math if you know about how much weight is up front.

Great engineering work to explain all of this Brian.

Hi everyone, I came across this thread while researching frame design for my 31 Tudor. Awesome write ups happy to see someone sharing the information the have learned.The question I have is on frame width. I have seen frames that are the same width from front to back as determined by the front cross member and ones that are spread at the rear like a stock A frame when building one from rectangle tubing as I am what is the best way to go and why? Mine will have a 4" drop spring over front non suicide with zees front and rear and will be channeled 4". I have already created the horns on the front and I am making sure I have a solid plan before going further.

Welcome Dex-

Check out westcottsauto.com
http://www.wescottsauto.com/WebCatal...ram1928-31.pdf
that'll keep you busy for a 6 pack or so


Jerry