Drivetrain Rear brake drum question

[limp]

I purchased these " universal " rear drums for my new rear end when I put it together..
Its hub centric so no movement up and down or side to side, but the holes for the wheel studs are slightly larger so I can turn the drum back a forth radially ( without the wheels on) and I get appx. 1/8 movement from one side of the stud to the other side....
One would think when the wheels are tightened down it should be OK, but I am wondering if during hard braking or acceleration if the drum could spin and clunk at times??
Anyone experienced this before??

 

[Mustang5L5]

That's how a lot of slip on style brake rotors are as well. There's a little slop

Really, the lugs aren't meant to hold the rotor/drum from spinning. It’s hubcentric. When properly torqued down, the flat face of the axle/hub presses against the inside of the drum and that frictional force should prevent any rotation. Same concept as many wheel spacers.

 

[limp]

That's how a lot of slip on style brake rotors are as well. There's a little slop

Really, the lugs aren't meant to hold the rotor/drum from spinning. When properly torqued down, the flat face of the axle/hub presses against the inside of the drum and that frictional force should prevent any rotation. Same concept as many wheel spacers.

Thanks for the help.... I have probably seen this in the past but I wasn't paying attention to it....

 

[Mustang5L5]

If it helps you sleep bettter at night….

Wheel spacer safety, and the physics of keeping the wheels on

 

[Willybill32]

I purchased these " universal " rear drums for my new rear end when I put it together..
Its hub centric so no movement up and down or side to side, but the holes for the wheel studs are slightly larger so I can turn the drum back a forth radially ( without the wheels on) and I get appx. 1/8 movement from one side of the stud to the other side....
One would think when the wheels are tightened down it should be OK, but I am wondering if during hard braking or acceleration if the drum could spin and clunk at times??
Anyone experienced this before??

I have a new (well, new when I bought them!) set of aftermarket drums for an ‘86. I decided to upgrade to rear discs before I rebuilt the rear brakes. I don’t know if they fit or not, but they’re yours for the shipping charges.

Bill

 

[Robertstang]

To center the drum adjust the brake shoes outwards until it stops. The drum should now be centered. Put the wheel on and tighten down the nuts. Back off the shoes a little and you should be fine. The torqued down wheel should prevent any brake drum slippage. Of course this is just a theory so what you find in practice could be different. LOL

 

[85GTStangGuy]

The brake drum (assuming it's the correct one for the application) will always be centered due to it being hub centric. Being able to rotate the drum a bit on the studs doesn't change the fact that the drum is still centered, no matter where the lug studs are in relation to the holes they poke through.

 

[limp]

The brake drum (assuming it's the correct one for the application) will always be centered due to it being hub centric. Being able to rotate the drum a bit on the studs doesn't change the fact that the drum is still centered, no matter where the lug studs are in relation to the holes they poke through.

The drum is centered.. As the above says it is hub centric...

 

[limp]

I have a new (well, new when I bought them!) set of aftermarket drums for an ‘86. I decided to upgrade to rear discs before I rebuilt the rear brakes. I don’t know if they fit or not, but they’re yours for the shipping charges.

Bill

I can't thank you enough for the generous offer, but I don't think they will fit my rear end....

 

[Noobz347]

I can't thank you enough for the generous offer, but I don't think they will fit my rear end....

Um... ok.

 

[Mustang5L5]

Oh man. That's a good CT but might be going a bit too far.

 

[limp]

Um... ok.

These drums are around 2 inches larger in diameter than the drums on the 7.5" rear that came out of the car...
They were purchased as a package, with backing plates.. the brakes came installed to the backing plates.... I am assuming the 8.8 are close to the 7.5" drums?