Re: Front Spindles (was Pacer Suspension)

[farna@xxxxxxx]

So I'm right (disc spindle has thicker flange -- or taller if you look at Tom's link.. ;> ), and the Mitchell interchange is wrong, or as Tom alludes, there were varying circumstances where thick or thin flanges were used to make things work/line up correctly. That just seems like so much more trouble than it would be worth though. If the flange thickness varied, then the offset of the rotor or the caliper mounts would have to be changed to coincide. I just don't see ANY manufacturer doing such a thing, it would be a parts bin nightmare! Could be that different parts were used on different models, but I'm still doubtful. I'll have to check parts books, but I think the caliper adapter is the same for all models, or at least all small cars and all big cars (only two parts). 

But as Andrew pointed out, the "Big Bendix" brakes used from 75-76 on all models, 75-78 on the big cars, used a different spindle with bigger bearings. And Tom -- ALL AMCs use the same pattern to bolt the spindle to the car from 1953-83 (back to 50 for the Nash Rambler), regardless of size. The Big Bendix spindles will bolt right onto a 1950 Nash Rambler, or a 53 Nash Statesman/Ambo, even 55 Hudson Wasp/Hornet!

--
Frank Swygert
Publisher, "American Independent 
Magazine" (AIM)
For all AMC enthusiasts
http://farna.home.att.net/AIM.html
(free download available!)

original message-------------------------------------------
From: Tom Jennings <tomj@xxxxxxx>
Subject: Re: Pacer Suspension:
Date: Mon, 2 Jan 2006 14:13:03 -0800
To: mail@xxxxxxxxxxxx

Just got back past night from a trip (in the 70 Hornet) LA to Santa  
Fe, plowing through email...

Here what little info I have on spindles: if you get more numbers I'd  
love to add them.

http://www.wps.com/AMC/spindles.html


On Dec 29, 2005, at 10:00 AM, farna@xxxxxxx wrote:

> Andrew, could you scan and send me the page with the flange  
> thicknesses, or make up a chart of years and thickness, disc or  
> drum brakes? Sounds like I got it backwards, but I got the info  
> from someone else who mentioned that the DISC spindle had the  
> thicker flange for the caliper offset. Doesn't sound right, as the  
> caliper adapter is 3/8" thick itself. Disc spindle flange would  
> seemingly need to be thinner to keep tread from increasing to much.
>
> On December 29, 2005 andrew hay wrote:
>
>> napa says #12/#13 for mustangs including II, pinto, and most other
>> falcon-derived fords.  sounds like these use the same race - inner or
>> outer - as the amc's #2/#6, if they fit.
>>
>> " I have a set of 1963 drums that I'm removing the hubs from. Note  
>> that
>> " drum hubs will fit on disc spindles and rotors on drum spindles,  
>> but the
>>
>> true of all but the big bendix spindles, which use different  
>> bearings,
>> afaik.
>>
>> " mounting surface (where the four holes to bolt the spindle on  
>> are) is a
>> " bit thicker on disc spindles to space the rotor out for the  
>> caliper. I
>> " have verified fit of a 1980 concord rotor on a 63 drum spindle,  
>> and vice
>> " versa.
>>
>> the mitchell master interchange listed several flange thicknesses
>> starting in the early '70s, with the drum spindle generally the
>> thicker to match the caliper adapter behind disk spindles.