Technical X Crossmember Options For Stock Model A Frame !

Hey Guys.
I have seen a couple of images of 35 to 48 Ford X crossmembers being added into 32 frames, I would like to do the same to my Model A frame. I am just wondering if anyone has done this ? I am keen to see some images.

 

You can use a 35-48, need to trim it a little. I couldn't find one local and used a Dagel X member.

 

Here's a 32 style X-member


Then there's this Dagel kit


This is a HAMBERS with a 36 X-member


Or this?


Here's a transmission mount

 

All look very impressive.

 

That's the great thing about being here, I was pondering this very question before bed last night and here's a thread on the topic. Additionally I'm thinking of boxing my frame, for a low HP car (283) is a k member a necessity or just a good idea. Or can you choose one or the other. Phil

 

This is mine. Glen

 

It certainly is because our state department of transport has very strict rules regarding the construction or modification of frames, right down to the thickness of the metal used, the type of welding, and the need to use transmission tunnels and boxing for side rails. All of this makes building a traditional rod harder. Thier long term goal is no doubt to legislate early rods off the road, so anything I construct will need to meet these strict guidelines.

 

I used SoCal tublar K members because I felt that they gave me more space for routing exhaust & the other necessities.

 

In my '31 build there really wasn't any reason to drastically modify the stock frame. Modify and box the stock x-member, box the rails and put some thought into where to put bracing. Holds up well to a 5.0 HO motor with no chassis flex.

 

i believe this one came out of a 51 F1. kinda hard to see in the pics, sorry

20180628_081227 by Chappy444 posted Jun 28, 2018 at 8:13 AM

Chappy

 

Often made them, using .14 wall 2x4 rect tube.

 

In a Model A frame, (usually boxed) I've used the 'K' member,
A) Round tubing, 1.5" dia., .095" wall.
B) rectangular tubing, 1.5" X 4", .095" wall.
C) Fabricated braked sheet, .187" thick, 1.5" X 4" channel legs.

'C' design is basically a '32 center member, braked and welded to close spec.

Scale 52"-60" wingspan Control line airplanes were harder than this... all bulkhead, stringer, and rib inclusive...Hand cut, and plans hand drawn...Some of us 'die hard'!

 

I put a 39 X member into my stock model A frame. It took a ton of work, but it does stiffen the frame well.

 

I know this is an old thread, but does anyone know if anyone offers the 32 K member rear leg braces in a Model A frame like these that mgtstumpy posted?

My workspace is, well, not as nicely equipped as the one pictured.

 

I *think* his were only for 32 rails?

EDIT- Tim was correct, after digging around for two days I found the thread here-
https://www.jalopyjournal.com/forum/threads/av8-frame.1011319/

 

This is what I came up with using my original cross member still tossing up weather to brace it


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Looks nice Benny.

 

Yes on the K member as it adds a ton of strength to the crossmember...
the pedals want to twist the x member forward...
the left K member really helps re-enforce the crossmember against that twist...
if I box my '32 frame it will be about 8" fore and 8" aft of the firewall and about 24" from the flat of the rail up and to the apex of the kick...

 

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