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LEGENDS => Drivetrain & Gearing => Topic started by: RickyBobby on May 05, 2008, 10:14:26 am

Title: Changing from single to double shear
Post by: RickyBobby on May 05, 2008, 10:14:26 am
So my single shear rear end kept leaking around the brakets no matter how much weld we put on them.  So I bought a double shear rear end in the car and got it installed.  The measurements I got when I would square the rear end from the frame rail was 12 1/8 inches.  Now that I have installed the new double shear the rear end seems to be farther forward.  My measurements when I went to square was 11 7/8 inches.  Now I cannot get 6 inches of clearence on both sides.  Has anyone else had this?  Are the pick up points on the double shear different?  I am goig to move the rear end back tonight so I can get the 6 inch rule back.
Title: Re: Changing from single to double shear
Post by: justfreaky on May 05, 2008, 12:25:32 pm
RB,

 Pick up points should be the same.
Could be slight differences due to welding process.

Or;

 Could it be that you washed your car in hot water
and it shrunk some?  ;D

 Steve
Title: Re: Changing from single to double shear
Post by: RickyBobby on May 05, 2008, 01:45:34 pm
Lol.  I did wash it but it is a dark colour so I make sure to wash in cold watter
Title: Re: Changing from single to double shear
Post by: LunaticMark on May 05, 2008, 02:05:05 pm
cold water... good choice, that way the color doesn't run... lmao!!! Check your measurements on your rear end housing... it may have been a manufacturing flaw. If the rear end was in the jig crooked, then the mounts may have been installed off a bit, also check your rear end for straightness... yes, i know it's new, but trust me... SEVERAL of the guys here had bent rears from the factory.
Title: Re: Changing from single to double shear
Post by: RickyBobby on May 05, 2008, 06:39:06 pm
how do you check for it being straight?
Title: Re: Changing from single to double shear
Post by: justfreaky on May 06, 2008, 03:38:40 am
RB,
 Maybe this will help.

http://www.kevscorner.com/Corner2004/KCLegendSquare.htm

 I'm off work today and will research a bit more for you.


Steve

Title: Re: Changing from single to double shear
Post by: RickyBobby on May 06, 2008, 09:12:19 am
Thanks Steve,

This is what I had done to ensure it was square.  I was wondering how to check the rear housing to see if it is not bent.

I moved the rear end back last night to 12 1/16 and I got my 6 inches on both sides again (just).  So I am legal for this week :-).  I do not like how the heims are showing lots of thread though.  I had it at 12 1/16 before on the single shear with no threads showing.
Title: Re: Changing from single to double shear
Post by: justfreaky on May 06, 2008, 01:18:46 pm
Try this link. At the end of the article on How To Manufacture A Rear End there is a simple angle Iron check tool.


http://www.dwarfcarracing.com/tech_info_.htm


Steve
Title: Re: Changing from single to double shear
Post by: elimn8u_43 on May 06, 2008, 09:08:02 pm
Try this http://www.cmgmotorsports.com/housings.htm

Geoff
Title: Re: Changing from single to double shear
Post by: RickyBobby on May 07, 2008, 03:48:43 pm
So I also found out that I was taking my 6 inch meaurement in the wrong spot.  I was measuring to the backing plate when I should have been meauring to the drum.  That make a hug difference.
Title: Re: Changing from single to double shear
Post by: DARK AGE 53 on May 29, 2008, 02:46:47 pm
So I also found out that I was taking my 6 inch meaurement in the wrong spot.  I was measuring to the backing plate when I should have been meauring to the drum.  That make a hug difference.

You want to measure from the backing plate not the drum.

Later,
Al
Title: Re: Changing from single to double shear
Post by: gramps05 on May 29, 2008, 06:25:49 pm
2008 rule book, page 59, para 77 measurement taken from the inside edge of the Brake Drum.....
Title: Re: Changing from single to double shear
Post by: DARK AGE 53 on May 29, 2008, 10:08:55 pm
2008 rule book, page 59, para 77 measurement taken from the inside edge of the Brake Drum.....

I stand corrected, I know I read it some where but obviously it wasn't the rule book. :-[...now to recheck my son's car...thanks for the correction.