Re: 1929 640 Brakes
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Checked the front axle and if the "stop" bolts that stop turning of the wheels are supposed to be on the back side of the axle, then the axle is in correct. Does anyone know why the brake cam on the outboard side of the backing plate when vertical places the slot on the inboard side of the cam at 7 degrees off of horizontal? Anyone know what the proper caster angle of the king pins should be?
Posted on: 2022/12/29 12:08
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Re: 1929 640 Brakes
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Hi all,
Fascinating problem...One that I am also having after reassembling the front axles on my 645. As I rotate the tires the cables tighten against the brake levers and cause the brake shoes to contact the drums. I can assure you that Jim does not have the axle on backwards (I have photos of my car before disassembly showing the "stop bolts" pointing to the rear of the car. I am also confident the brake shoes are not different sizes from passenger to driver's side, having lain them all on top of each other before re-assembly. I am intrigued by the mention of the cams being slotted at an angle. I unfortunately didn't take detailed photos of the cams when disassembling my car. They were covered in 90 year old grease and they appeared to be identical. I have included a photo of the "pre-disassembly" configuration of the inside of the wheel showing the cam clearly marked "R". However, you can bet that I am going to go back and flip those cams to see if the problem disappears. If anyone knows the final answer to this story, please post it or private message me! Thanks John Wogec
Posted on: 2023/1/1 16:46
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Re: 1929 640 Brakes
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You should look at the information this site provides. Go to the literature archive and look under service letters, counselors and bulletins. Scroll down to 1928 letters. Then to vol. II #9. Go to page 4. Under ask me another look at question #2. You'll see that your condition is normal for a correctly adjusted brake.
Posted on: 2023/1/2 15:18
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1954 Cavalier (export model)sold
1941 Clipper 1939 120 Rollson all weather cabriolet George |
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Re: 1929 640 Brakes
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Home away from home
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Thanks George! I have learned a few tidbits from those service letters, but must admit I missed that one. I know that playing with the adjusting nut at the end of the cable allows me to get close to no drag, but never eliminating it completely on "full turn". Maybe that's the best to hope for, but I'm still gonna see if Jim's theory about the left and right side housings being unique has an effect. Thanks for pointing this out.
John
Posted on: 2023/1/2 17:26
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Re: 1929 640 Brakes
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Quite a regular
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See attached photo from the right front wheel on my 640. On my three 1929`s, which I restored completely by myself, all brakes shoes are equal, the inner diameter on all four drums are equal, the same thickness of all brake linings, and the cars brakes wonderful.
Posted on: 2023/1/3 9:25
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633 Touring
640 Roadster 640 Phaeton 1104 Club Sedan Odd Moen |
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Re: 1929 640 Brakes
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Home away from home
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All of those sand blasted parts need to be painted or plated. I did a basket case where they sand blasted everything in sight and the car was on pallets. Everything was subject to rust. All of the bits and pieces were laid out on boards and then barrel plated and laid out again.
Posted on: 2023/1/3 10:21
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