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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19610 |
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The disc brake bracket is 1/2"- 3/4" and the spindle base is 3/4"-7/8". Could be 1-1/4" or a bit more, depends on year. I think his 1-1/4" thick combo is for a 71-74 Kelsey Hayes setup. The later Bendix is slightly thicker. It all depends on how deep the rotor is -- how far the wheel mounting face on the rotor is set back from the end. As I said, drum brakes have that face much closer to the end of the spindle, and there is no bracket or spacer. Maybe you're measuring the steering arm too? The steering arm goes between the spindle and steering knuckle on both disc and drum setups, and is the same on both.
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Frank Swygert
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FuzzFace2
AMC Addicted Joined: Jul/05/2007 Location: Angier, N.C. Status: Offline Points: 10343 |
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Edit: This came off my 70 Javelin SST drag car. Car came from the factory with a v8/auto, with out re-checking the numbers I dont know the motor size. Also added the drum size below.
Here are the pictures of a 10" drum setup I have.
Drum setup you can see the spindle (black) just above it the knuckle, and above that the steering arm. 2 measurements of spindle base 1 1/4 - 1 of 1.255 other of 1.256 Dave ---- Sorry I cant show them, some thing about my site and how they store them.Edited by FuzzFace2 - Apr/21/2010 at 12:43pm |
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TSM = Technical Service Manual
75 Gremlin X v8 for sale 70 Javelin 360/auto drag car 70 Javelin 360/T5 Street car |
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FuzzFace2
AMC Addicted Joined: Jul/05/2007 Location: Angier, N.C. Status: Offline Points: 10343 |
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This is off my 70 Javelin SST 390/4sp car. I pulled them last Dec. to install 83 Concord setup.
The 4 piston setup. First picture is the setup less the steering arm. You can see the empty bolt hole to the left. Thin spindle base, Caliper bracket, knuckle. Yea got to change the picture discripsion.
Not so good picture of how I came up with the measurement Measurement of spindle base Caliper bracket with measurement .763 Close up .763 Dave ---- |
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TSM = Technical Service Manual
75 Gremlin X v8 for sale 70 Javelin 360/auto drag car 70 Javelin 360/T5 Street car |
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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19610 |
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Thanks a lot Dave -- the pics sure do erase any doubt! Like I said, I haven't taken every AMC brake system apart. What I have the most experience with (and have a few on hand) is 58-66 Americans and 63-66 Classic/Marlin/Ambassador. Those all use the thin spindle with drum brakes. The disc setup I'm most familiar with is the 79-83 small car discs. Those all use a roughly 7/8".
I would suspect the real thick drum spindles are Javelin only, but TorqueyAMX said the part number also apply to other 1970 cars (see list below). So apparently there was a change with the 1970 suspension to get the front tread width where AMC wanted it, or in the case of the Hornet/Gremlin to fit wider than normal stock tires. Don't know how far beyond 70 the thick base spindle was used with drum brakes -- could be 70-71 only, but I suspect it was used with drum brakes until discs were stock on front (through 1976 -- 77+ disc front stock). I've not messed with any AMCs with drum brakes newer than 66, not that I took spindles and all off of anyway. Just changed some shoes and pads, maybe a wheel cylinder and caliper or two. Going by application of a '70 Javelin V8 with drum brakes, that
part number is also the same for:
'71 Hornet/Gremlin 6 cyl less discs with wide 70 series tires
'70 Hornet V8 less discs with wide tires
'70 Rebel/Ambo V8 less discs
'71 Javelin V8 Less discsEdited by farna - Apr/21/2010 at 7:49pm |
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Frank Swygert
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poormansMACHINE
AMC Addicted Charter Member Joined: Jun/28/2007 Location: Shoemaker-Levy9 Status: Offline Points: 12302 |
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I've got Ambassador drum brake spindles that are 1.260" base.
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FuzzFace2
AMC Addicted Joined: Jul/05/2007 Location: Angier, N.C. Status: Offline Points: 10343 |
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PMM IIRC Torq said in a PM to me that was one of the cars that had the 1.25 base. I would copy it from my PM but when I was trying to make room I dumped ALL my PM’s. I wonder if the 1.25 base goes with a 10 inch drum? Dave ---- |
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TSM = Technical Service Manual
75 Gremlin X v8 for sale 70 Javelin 360/auto drag car 70 Javelin 360/T5 Street car |
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TorqueyAMX
AMC Addicted Joined: Dec/16/2008 Location: Simi Valley CA Status: Offline Points: 1139 |
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"Don't Worry..... Be Happy!!! Probably two kits. one a base 11 inch rotor kit and a 12.19 Big Kit!
The digitizing process
Edited by TorqueyAMX - Apr/29/2010 at 8:59pm |
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6t8amxetc
AMC Addicted Joined: Mar/11/2008 Location: Washington State Status: Offline Points: 630 |
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Awesome news TorqueyAMX! Thank you again for your efforts in making this happen. And for keeping us up to the minute on the progress. That is pretty cool they will let you take pics etc and post them here. They will definitely be on my list of upgrades for my AMX. Have they given any indication of a time frame for development, testing, production etc? Thanks...Ty
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FuzzFace2
AMC Addicted Joined: Jul/05/2007 Location: Angier, N.C. Status: Offline Points: 10343 |
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Way to go! Job well done! I know they just said they would do kits do you know how long before they have them rolling out the door & list some thing on their site? I don’t see any thing at all for AMC / Rambler. Now if they could do some thing for the rear using the AMC 20. I know the axles would need to be replaced because of the end play of the stock setup. There I go dreaming again Dave ---- |
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TSM = Technical Service Manual
75 Gremlin X v8 for sale 70 Javelin 360/auto drag car 70 Javelin 360/T5 Street car |
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TorqueyAMX
AMC Addicted Joined: Dec/16/2008 Location: Simi Valley CA Status: Offline Points: 1139 |
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Dave, That's actually almost Funny!
I eventually heard they actually started taking my rear axle apart today and couldn't figure out how to do it!!!!!
I told them "Leave My Freakin' Rear Axle Alone"!!!
I think I know of a way to digitize the rear without taking it apart and have passed that information along to them. Edited by TorqueyAMX - Apr/21/2010 at 10:25pm |
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