REAR BRAKE DIMENSIONS
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REAR BRAKE DIMENSIONS
Posted: March 05 2003 10:06 AM
 
DOSS WALLACE (aka DOSSWALLACE) [ View ] [ DOSSWALLACE@BELLSOUTH.NET ] [ Car Ads ] [ Blogs ]
Snellville, Georgia
 
I'M BUILDING A 33 WILLYS. GOING WITH IFS FRONT WITH 11" DISCS AND FOUR BAR REAR WITH COILOVERS. HAVEN'T DECIDED ON REAR END AS OF YET, OR WHETHER I WILL GO WITH DISC OR DRUM BRAKES,BUT HAVE A QUESTION. IN MEASURING THE FLANGE TO FLANGE DIMENSONS TO HAVE A REAR END CUT DOWN DOES ANYONE HAVE THE DIMENSIONS FROM THE REAR OF THE BACKING PLATE TO THE FACE OF THE DRUM OR FACE OF ROTOR FOR VARIOUS MANUFACTURES? HAVE LOOKED AT WEB SITES FOR DIFFERENT BRAKES, BUT NO ONE SHOWS DIMENSIONS. ANY HELP WOULD BE APPRECIATED. I KNOW THAT THE DIMENSIONS WILL VARY, BUT I CAN'T SEEM TO GET FROM SQUARE ONE.

THANKS
 
 
Comments
 
Posted by DOSSWALLACE  -  02/19/2003 09:25 AM
Thanks Guys.

I know I will definitely have to get a rear end cut down. Based upon wheel backspacing, tire clearance, and allowing 3" on each side for the brakes, I am looking right now at a flange to flange width of about 36" + or -. Main thing I was concerned about was if I was allowing enough (3") on each side for brake backing plates, drums, etc. Most rear drum brakes look like they extend about 3" from the back of the backing plate to the face of the drum.
DOSSWALLACE [ View ] [ Email ] [ Blogs ] [ Car Ads ] Snellville, Georgia
 
Posted by DOSSWALLACE  -  03/05/2003 10:06 AM

Thanks George. Neat idea.



Doss Wallace
DOSSWALLACE [ View ] [ Email ] [ Blogs ] [ Car Ads ] Snellville, Georgia
 
Posted by Willys33  -  02/17/2003 09:00 PM
Your chances of finding a rear end to fit under the 33 Willys is slim to say the least. It may be better to work backward. Find the wheels that you would like to use and note the backspacing. Then figure out how much tire will be hanging out past the lip of the rim and work backward to find the measurement from flange to flange. Now that you have that you can either try to find a rear end that will work, have one cut down or get a new housing. If you are going to cut one down really give thought to buying a new housing that comes with tubes. I think you will be supprised to find out the cost is about the same. As far as disc go, most of the stopping power is on the front so why bother with the added expense if you don't have to. Hope this helps. By the way, the rearend will still cost about $1000!
Get off the trailer and drive [ View ] [ Email ] [ Blogs ] [ Car Ads ] Alamogordo, New Mexico
 
Posted by woodz428  -  02/17/2003 08:20 PM
You'll need to get the backing plates to determine distance, some backing plates are fairly flush with the bearing retainer while others are offset some toward the center. For most disc brake set-ups I think you reference the distance from the retainer to the axle flange surface.
woodz428 [ View ] [ Email ] [ Blogs ] [ Car Ads ] Champaign, Illinois
 
Posted by DOSSWALLACE  -  03/04/2003 12:00 AM
Thank you for the info. That is exactly what I was looking for.
DOSSWALLACE [ View ] [ Email ] [ Blogs ] [ Car Ads ] Snellville, Georgia
 
Posted by kweekley67  -  03/04/2003 12:00 AM
from flange to outside of axle is 2 1/2 inches. There are a rare few that are 2 3/8. Add 1/4 width for drums and 1/2 for disc . Allow about 1 inch tire clearance between tire and fender for movement. Get your tires and wheels first. Mount them then measure before you get rear cut down
kweekley67 [ View ] [ Email ] [ Blogs ] [ Car Ads ] Monroe, North Carolina
 
Posted by Iammr5X2@aol.co  -  03/05/2003 12:00 AM

Another good way to measure for rear, or front wheel clearence, and axle length is to get a wood 2" x 4" stud, and a piece of plywood approximately 3/4" x 2' x 2'. You then cut 2 plywood pieces the same radius as your break drums ( lay the drum on the plywood face down, and draw a circle around it, and the holes for the wheel bolts. ). Next you bolt these pieces of plywood onto the back side of the wheels as if they were the brake drums, roll the tires under the car frame, or body, and set the tires like you want them. Next you measure the width from the back side of the plywood pieces attached to each wheel, and cut the 2" x 4" wood stud to that length. The next, and last step is to remove the plywood pieces from the back of each wheel, find the center, and either screw, or nail the plywood onto each end of the 2" x 4" piece of wood stud. You will now have a pretty cheap 3-D axle mock up,( works on front, or back wheels ) and a pretty exact axle measurement to the back of each tire rim ( or from the front of drum to the front of drum ). You can now also see if you really like the width of the axle, by rolling the tires back under the car, and if you want to change the width of the axle you can change it in just a few minutes by either cutting, or lengthening the wood 2" x 4" . It's alot cheaper than cutting a rearend, and finding out later that you don't like it, or measured incorrectly !! I used to do this with all of my cars I built when I owned my Streetrod, and Racing Shop in the 1980's.



Good Luck , George, calif.
Iammr5X2@aol.co [ View ] [ Email ] [ Blogs ] [ Car Ads ] Carson, California
 
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