Hydraulic Conversion
Re: Hydraulic Conversion
What about swapping the rear axle for a 1942 ford truck with hydraulic brakes? Same wheels I think check out UK e-bay there's one on sale there now
- spectria
- Posts: 1874
- Joined: May 15th, 2008, 9:53 pm
- Body Type: Mail Truck, Stakebed
- Model Year: 1931
- Location: Quincy, Ca.
Re: Hydraulic Conversion
Can you post a pic and measurements for between backing plates, spring perches, and axle flange to axle flange, Please?av8 wrote:What about swapping the rear axle for a 1942 ford truck with hydraulic brakes? Same wheels I think check out UK e-bay there's one on sale there now
I wouldn't mind a change if it looked very similar, but I would only do it on my very rough '31, not the 1930 82b 185a platform...
Dave in Quincy, Ca. I love Pics!!!! Post them All!!!
Join the Ford Model AA Truck Club - membership form at http://www.fmaatc.org
Join the Ford Model AA Truck Club - membership form at http://www.fmaatc.org
Re: Hydraulic Conversion
I want to stay more stock than that I think, I'd like to keep the same backing plates and all just try to figure out a way to add cylinders, or at least keep the same drum. Today I found some F5 drums and they just don't look like the AA drums.
- spectria
- Posts: 1874
- Joined: May 15th, 2008, 9:53 pm
- Body Type: Mail Truck, Stakebed
- Model Year: 1931
- Location: Quincy, Ca.
Re: Hydraulic Conversion
Does anyone know if the Banjo Rear Axle has a similar clone with a different ratio?scl009 wrote:I want to stay more stock than that I think, I'd like to keep the same backing plates and all just try to figure out a way to add cylinders, or at least keep the same drum. Today I found some F5 drums and they just don't look like the AA drums.
Dave in Quincy, Ca. I love Pics!!!! Post them All!!!
Join the Ford Model AA Truck Club - membership form at http://www.fmaatc.org
Join the Ford Model AA Truck Club - membership form at http://www.fmaatc.org
-
- Posts: 1442
- Joined: April 24th, 2003, 11:50 am
- Body Type: Mail truck, Stake tr
- Model Year: 1931
- Location: SO CAL
Re: Hydraulic Conversion
Somebody posted a picture of AA backing plates quite awhile back
but there was no other information about the setup.
Bob
but there was no other information about the setup.
Bob
- Attachments
-
- AA Hydraulic Brakes 2.jpg (62.38 KiB) Viewed 5856 times
Re: Hydraulic Conversion
Hi guys. I own a 29 AA , I haven't started the restoration process yet. I have measured the bolt pattern with calipers and I'm sure its 5 on 6 7/8 circle. I also have a 30 AA, the rims are different but the bolt pattern is the same. I've done alot of thinking on brakes. Recently on the Fordbarn site, one model A owner put the new brake energizer kit on his model A and it has pressed steel drums and woven lining, he said the improvement is like hydraulic brakes. I've been to Flathead Teds website, the kit he sells converts all 4 wheels on the AA trucks. The cost is $260.00 plus $30.00 shipping. I think that the way I'll go.This is a real good topic and I hope it will continue on.
Carry on nick.
Carry on nick.
Re: Hydraulic Conversion
Last time I measured my 31 AA lug bolt pattern I beleive it was a 5 x 8. Maybe I'll have to borrow some calipers and actually remove the lug nuts and see...
- rollingsculpture
- Posts: 553
- Joined: December 9th, 2008, 7:30 am
- Body Type: platform
- Model Year: 1931
- Location: Takoma Park maryland
link for mr texas , Hydraulic Conversion
i know its for model a cars but there is some great info here and some insight as to how it is done
http://members.fortunecity.com/pjsauber ... Brakes.htm
http://members.fortunecity.com/pjsauber ... Brakes.htm
- spectria
- Posts: 1874
- Joined: May 15th, 2008, 9:53 pm
- Body Type: Mail Truck, Stakebed
- Model Year: 1931
- Location: Quincy, Ca.
Re: link for mr texas , Hydraulic Conversion
Thanks For the Info...rollingsculpture wrote:i know its for model a cars but there is some great info here and some insight as to how it is done
http://members.fortunecity.com/pjsauber ... Brakes.htm
Lots of Options...
Dave in Quincy, Ca. I love Pics!!!! Post them All!!!
Join the Ford Model AA Truck Club - membership form at http://www.fmaatc.org
Join the Ford Model AA Truck Club - membership form at http://www.fmaatc.org
Re: Hydraulic Conversion
Can anybody post a pic of the backing plates with measurements?
Thanks
Scott
Thanks
Scott
- Chris Haynes
- Posts: 2203
- Joined: September 7th, 2003, 5:18 pm
- Body Type: 82A
- Model Year: 1930
- Location: Camarillo, CA
Re: Hydraulic Conversion
av8 wrote:What about swapping the rear axle for a 1942 ford truck with hydraulic brakes? Same wheels I think check out UK e-bay there's one on sale there now
Bolt pattern changed in '34.
Re: Hydraulic Conversion
sorry to bump
I've been breaking down my front end the help of some good guys here on the forum.
I'm looking at these kingpins and wondering about the housing on top for the mechanical breaks (red arrow) Thinking about finding a hydraulic cylinder to fit in the place of the housing. In other words cutting it off, welding up a plate too the kingpin and bolting the cylinder directly on top of kingpin to push down on the rod that moves the brake mechanism on the backing plate. Seems like this might be a good route as it would only be one modification without changing too many parts. The problem is finding a small enough cylinder (less than 2 inches) soo that it will still fit in the backing plate recess. I measured that I will need 3/8 stroke.
Pros/cons/suggestions?
How much force do I need to push out for it to be better than the full mechanical setup?
Scott
I've been breaking down my front end the help of some good guys here on the forum.
I'm looking at these kingpins and wondering about the housing on top for the mechanical breaks (red arrow) Thinking about finding a hydraulic cylinder to fit in the place of the housing. In other words cutting it off, welding up a plate too the kingpin and bolting the cylinder directly on top of kingpin to push down on the rod that moves the brake mechanism on the backing plate. Seems like this might be a good route as it would only be one modification without changing too many parts. The problem is finding a small enough cylinder (less than 2 inches) soo that it will still fit in the backing plate recess. I measured that I will need 3/8 stroke.
Pros/cons/suggestions?
How much force do I need to push out for it to be better than the full mechanical setup?
Scott
- spectria
- Posts: 1874
- Joined: May 15th, 2008, 9:53 pm
- Body Type: Mail Truck, Stakebed
- Model Year: 1931
- Location: Quincy, Ca.
Re: Hydraulic Conversion
Keep On Bumping, this is an ongoing thread...scl009 wrote:sorry to bump
I've been breaking down my front end the help of some good guys here on the forum.
I'm looking at these kingpins and wondering about the housing on top for the mechanical breaks (red arrow) Thinking about finding a hydraulic cylinder to fit in the place of the housing. In other words cutting it off, welding up a plate too the kingpin and bolting the cylinder directly on top of kingpin to push down on the rod that moves the brake mechanism on the backing plate. Seems like this might be a good route as it would only be one modification without changing too many parts. The problem is finding a small enough cylinder (less than 2 inches) so that it will still fit in the backing plate recess. I measured that I will need 3/8 stroke.
Pros/cons/suggestions?
How much force do I need to push out for it to be better than the full mechanical setup?
Scott
I like your idea, Bet you could calculate the amount of force required, based on the multipliers, Length from pedal head to pivot, then the pivot lengths at the cross-members, then the lengths of the links at the wheels. Or you could possibly get a force gauge or just a linear scale and put in line on one front link, and apply the brakes.
I'm guessing 800 foot/lbs at the brake shoes, from a long lost memory of my ASE Master Cert test For the brake section... Its probably in a book somewhere....
Dave in Quincy, Ca. I love Pics!!!! Post them All!!!
Join the Ford Model AA Truck Club - membership form at http://www.fmaatc.org
Join the Ford Model AA Truck Club - membership form at http://www.fmaatc.org
Re: Hydraulic Conversion
spectria wrote:
Bet you could calculate the amount of force required, based on the multipliers, Length from pedal head to pivot, then the pivot lengths at the cross-members, then the lengths of the links at the wheels. Or you could possibly get a force gauge or just a linear scale and put in line on one front link, and apply the brakes.
I'll take that bet, as I haven't had the entire brake system from pedal to shoe since day 1
I have all the drums and everything up until the second crossmember I beleive, but everything has also been stripped forom the chassis.
Re: Hydraulic Conversion
Correct me if I'm wrong.Bob C wrote:Somebody posted a picture of AA backing plates quite awhile back
but there was no other information about the setup.
Bob
Doesn't this pic look like they cut off about a 2 inch section of each shoe where the mechanical actuator used to be (at the top)?
And aren't these plates upside down in the picture (as in the part at the top where they removed the actuator and placed the cylinder was originally installed towards the bottom?