The Ford Barn

Panheadguy · 09-17-2024, 04:30 PM

Try not to laugh. For reasons of my own I am considering putting an open or torque tube '40 rear axle under my Model A but want to retain the 4 wheel mechanical brakes. I am aware of the torque tube mods that need to happen.
Soooo, why wouldn't it work when hydraulics can be adapted to model A....I'm just going the other way!
Fire away!

Kurt in NJ · 09-17-2024, 05:30 PM

As long as suspension for the rear moves in the same arc as the rods so the center to center distances for the brake shafts stays constant with suspension movements.

shiver · 09-17-2024, 07:10 PM

Anything is possible..should you do it? Up to you

DJ S · 09-17-2024, 08:57 PM

What are the advantages of a ‘40 rear axle?

johnneilson · 09-17-2024, 09:16 PM

More than likely it will be about 2" wider than the Model A rearend.
Make sure tires/wheels fit as you like.

J

Panheadguy · 09-18-2024, 07:27 AM

Sponsored Links (Register now to hide all advertisements)

Better pinion support in differential. I randomly picked 1940 as all the later banjo's are pretty much the same inside

mcgarrett · 09-18-2024, 08:48 AM

A few important modifications will have to be made unless you have another angle to achieve them. The '40 torque tube and drive shaft will need to be shortened or parts interchanged to make it fit a Model A. Also, spring perches will have to be made/modified for the '40 axle to ride under the stock Model A spring pack. There may be more, but those are the ones that come to mind right off.

09-17-2024, 04:30 PM	#1
Panheadguy Member Join Date: Apr 2015 Location: Cedarburg WI Posts: 33	Model A Mech brakes on '40 rear axle? Try not to laugh. For reasons of my own I am considering putting an open or torque tube '40 rear axle under my Model A but want to retain the 4 wheel mechanical brakes. I am aware of the torque tube mods that need to happen. Soooo, why wouldn't it work when hydraulics can be adapted to model A....I'm just going the other way! Fire away!

09-17-2024, 05:30 PM	#2
Kurt in NJ Senior Member Join Date: May 2010 Location: on the Littlefield Posts: 6,553	Re: Model A Mech brakes on '40 rear axle? As long as suspension for the rear moves in the same arc as the rods so the center to center distances for the brake shafts stays constant with suspension movements.

09-17-2024, 08:57 PM	#4
DJ S Senior Member Join Date: Aug 2014 Location: Southwick, MA Posts: 598	Re: Model A Mech brakes on '40 rear axle? What are the advantages of a ‘40 rear axle?

09-17-2024, 09:16 PM	#5
johnneilson Senior Member Join Date: Jun 2010 Location: 34.22 N 118.36 W Posts: 1,181	Re: Model A Mech brakes on '40 rear axle? More than likely it will be about 2" wider than the Model A rearend. Make sure tires/wheels fit as you like. J __________________ As Carroll Smith wrote; All Failures are Human in Origin.

09-18-2024, 07:27 AM	#6
Panheadguy Member Join Date: Apr 2015 Location: Cedarburg WI Posts: 33	Re: Model A Mech brakes on '40 rear axle? Sponsored Links (Register now to hide all advertisements) Better pinion support in differential. I randomly picked 1940 as all the later banjo's are pretty much the same inside

09-18-2024, 08:48 AM	#7
mcgarrett Senior Member Join Date: Dec 2013 Location: Corsicana, Texas Posts: 1,306	Re: Model A Mech brakes on '40 rear axle? A few important modifications will have to be made unless you have another angle to achieve them. The '40 torque tube and drive shaft will need to be shortened or parts interchanged to make it fit a Model A. Also, spring perches will have to be made/modified for the '40 axle to ride under the stock Model A spring pack. There may be more, but those are the ones that come to mind right off.