Narrowed 8 3/4 questions

clementine said
I see.

I have 11x3 drums.

the shoes are 2"

I bet the backing plates are correct for 11" as that lip fits exactly into the groove between the braking surface and outer lip. I could try 11x2 or probably 11x2.5 they would match the shoes on there.

If I got the 2.5" shoes on there, the problem remains as its the axles that determine how close the drum is to the backing plate.

This diff was narrowed by the previous owner, I believe it came with backing plates and I purchased the incorrect drums.

But as I previously stated, the axes would have to be longer......or.....i need to put a button in.

Does the divider in that set of pics make sense? Is that what the button rides against?

Which side recieves the button?

Does it push up against the divider and then the opposing axle pushes against the divider on the other side?

Thanks for the input.

My opening post did lack quite a bit. guilty.

You’re not following.

Each of the 11” backing plates is different. Because the axle flange offset on all the BBP axles is the same, the backing plate offset has to be different for each of the 11x2”, 11x2.5”, and 11x3” brakes. For each 11” backing plate you must have the correct drum to match the offset on the backing plate. So if you have 11x2” backing plates you can’t use 11x2.5” or 11x3” drums, only 11x2” drums will fit.

If you don’t know what backing plates you have, you’ll need to measure them. The backing plate offset can be measured and that number will tell you what backing plates you have so you can buy the correct drums and shoes. This thread has the method to measure the plates and the measurements for the 11x2”, 11x2.5”, and 11x3” drums

Converting rear drum brakes from SBP to BBP