| xzt6 | -- 09-22-2018 @ 9:13 AM |
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I plan for a hydraulic brake conversion on my 1935 passenger car with wired wheels. I have obtained rear backing plates from a 1941 car. Can these be mounted using my drums? Other considerations?
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| wmsteed | -- 09-23-2018 @ 10:23 AM |
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My suggestion to you would be to forget the '41 backing plates in favor of '42-48. The '39-41's are very hard to adjust due to the adjusting anchors at the bottom. The '42-48 have floating anchors at the bottom that do not require adjustment. You will need '40-48 rear drums and an adapter plate for the '35 wire wheels. Use '41 front spindles with '42-48 front brakes, '40-48 drums and the same adapter plate for the wire wheels that you used on the rear. ** The adapter plate to mount wire wheels on hydraulic brake drums is a must have item, the wire wheels will not 'seat' properly on the drum which will cause them to come loose. You will need a '39 Ford style of peddle assembly to mount the master cylinder. Drake carries this style of peddle assy, some modification of the frame and/or bolt holes is required. You will also have to relocate the battery to clear the master cylinder. You will have to rig up the emergency brake cables to the floor hand brake. The new '41 spindles will require new king pins which will be a plus because they will eliminate the mechanical brake hardware. I converted my '36 to hydraulic brakes within weeks of buying the car in 1952, I used parts from a '41, everything worked fine except for the actual brakes which I converted to '42-48 to eliminate the adjusting problems. There are people that sell an after market master cylinder assembly, however, most of the units hang down below the frame and look rather dumb hanging under the car. Bill 36 5 win delx cpe
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| CharlieStephens | -- 09-23-2018 @ 10:40 AM |
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Here is a site that shows why you need the adapter for the wire wheels on hydraulic brake drums: http://www.jalopyjournal.com/forum/threads/40-ford-wheels-on-a-model-a.750368/#post-8330045 I am not sure that the '39 pedal is the best choice. Contact Richard Lacy at earlyv8@aol.com (email), earlyv8garage.net (web site), (626) 338-2282 about the master cylinder bracket he sells. If you are concerned ask if it hangs below the frame. Charlie Stephens
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| JM | -- 09-23-2018 @ 9:44 PM |
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I converted one of my 35's to '39-'41 hydraulic brakes and determined that I could use my stock 35 rear drums with this conversion, which meant I could mount my stock 35 wire wheels on the rear without the need for support rings, since 35 drums already have 5 little projections initially provided on drums to support the wire wheels. Also, I used Richard Lacy's master cylinder mount which works with stock 35-36 brake/clutch pedal assembly. Plus his conversion kit contains components that connects the 35 emergency hand brake to the ebrake cable. This also allows the battery to remain in its stock location. John
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| xzt6 | -- 09-24-2018 @ 2:35 AM |
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Thanks for the information. John’s conversion looks very promising. I don’t know the origin of my front replacement which I hope I can use (picture included). I will contact Richard Lacy to provide the missing parts. Regards – Bo
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| JM | -- 09-24-2018 @ 8:07 AM |
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Bo, I looked at your picture and can't tell which backing plates are on those assemblies because the lower spindle arm is covering the area I need to see. John
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| wmsteed | -- 09-24-2018 @ 8:24 AM |
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Reviewing the pix you attached I did not note adjusting nuts at the bottom of the backing plates which would indicate that they are '42-48 brakes. I am not sure if the '42-48 spindles will work on the '35 front axle. I'm quite sure someone will chime in with a comment about the fitment. I was vaguely aware that there were a few aftermarket master cylinder mounts available for the '35-36 Fords that did not hang down below the frame, but rather than guess I decided to stay with conversion parts that I am familiar with. Using the common term "back in the day" ('40's-50's ) it was quite common to convert front mechanical brakes to hydraulic using a spacer ring to adapt the hydraulic brake backing plates to the original spindles, this conversion did not make allowance for the mechanical brake hardware connected to the top of the king pin. The more common way was to use '40-41 spindles. Bill 36 5 win delx cpe
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| xzt6 | -- 09-25-2018 @ 5:32 AM |
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A more detailed view of the front brakes (and the car) Regards - Bo
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| JM | -- 09-25-2018 @ 10:23 AM |
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Both '37-'41 round back spindles, and the '42-'48 square back spindles will work on '32 to '36 axles, and of course on '37 to '48 axles that they were used on originally. On the '35 I converted to hydraulics, I used '37-'41 spindles because that's what I had. I later bought a '35 3w Coupe that has a '37 - '41 spindle on one side and a '42 to '48 spindle on the other side. A victim of the '50-'60 era where you used whatever you had or could find. It really doesn't matter, because I'm converting it back to mechanical brakes with floaters, that stop my cars better than any '39-'48 Ford/Mercury brakes on cars that I have driven. John
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