Technical In need of some of that fantastic HAMB help!!

Just got done installing a boling bro’s juice front brake kit on my 29 model A . Hubs spun nice and smooth, put the drums on and can hear a little drag when spinning. Mount the wheels on and those suckers drag bad! Took it all apart to check the bearings, didn’t see anything noticeable, reassembled everything and still alot of drag! The brake adjusters are all the way in too. What am I missing ?

 

Drum distorting when you tighten the lug nut? Just a guess....

 

how about a picture of the brake with the drum off?

You should be able to see some evidence on the shoe(s) of where it's dragging.

 

Are you positive that you ordered the correct kit for the spindle that you have? Very simply meaning that if you have a 29 with a 29 axle and 40 spindles you would have had to order a kit for a 40 an not a 29.
if you do have the correct kit, and haven't pulled the drum back off pull the drum back off and check where it is making contact that it should not.
That could be the edge of the metal shoe or the lining hitting the drum next to the surface that the shoes ride on.
If you have 37/41 spindles did you remove enough metal on the spindle so that the backing plate isn't pushed out from the spindle at the top? 1937-1948 front backing plate assembly - Boling Brothers
If not it could mean that the drum is hitting the backing plate. Even if you removed some metal and not quite enough the backing plate could be distorted.

 

I’m using the 29 spindles , I had to shave the top of the spindles so the backing plates would mate up nice and flat, the kit came with car when I bought it, still in its original packaging. It’s happening on both wheels not just one side. I can pull it all apart again in the morning and see if there is anything noticeable.

 

I really doubt you have 29 spindles, but a photo would prove it. Your pic above doesn’t look like the drum is seating correctly on the hub. Maybe you have some mismatched parts.

 

I can confirm the spindles have the smaller bolt pattern. But I’ll shot some pics In the AM.

 

I have installed many of those drums and brakes and they almost always drag. It sucks. Usually just have to find where it’s rubbing and grind it out. One one occasion I found a hub that was very tweaked, but it is almost always a drum problem.

 

As soon as I loosen all the lugs it spins freely with a small amount of drag…

 

Are you grinding around the top of the backing plates?

 

I think the issue has been solved. This lip on the backing plate was showing signs of grinding. I hit it with the grinder and it feels and sound soooo much better. Thanks guys

 

Also found some high spots on the wall off the backing plate. What a pain In the butt. Makes since now, once everything is snugged up I get all that binding.

 

Always hit that "full image" button before the "reply" button. Makes it a lot easier to diagnose any issues.

 

Thanks Don

 

A little of both usually. You’ve got it licked now it looks like, but I bet after you get the car on the road and take a turn you’ll hear it again and it’ll need just a little bit more.

 

Have you seen when the edge of the brake pad rubs the inside of the drum? It’s showing signs of that too.

 

I'm thinking more like the bearings are worn and letting the hub get too close to the spindle. Maybe you need new bearings and races.

 

Yup

 

Well I know I didn’t find any new bearings in any of these boxes, I contacted the PO and he said he didn’t have them. I think I’m just going to order new bearings .

 

How did you solve that?

 

shaving some off of the shoes

 

Based on the picture you show of the drum mounted on the five studs, I believe I know the problem. Those studs are too small for the holes in the Boling Bros drums. And if the drums are mounted on stock FORD hubs, they are definitely too small. IF using original '40-'41 style hubs, you must ream the five original stud holes to 0.600", and then install Dorman #610-234 studs.

Looking at the two lower-most studs in the picture, it's easy to see that the drum is hanging OFF CENTER. Without using the Boling Brothers required Dorman studs, the drum will never run concentric with the hub. When you tighten down on the lug nuts, you are locking the drum off-center, and allowing it to rub the backing plate on top, for instance. DD/Coop

 

DD COOPMAN, You are pointing out that the center hole in the Drum does NOT self center on the actual Hub shank. If this is correct then even using the recommended studs it sounds like a person should then have the Drums turned on the hubs locked in place on the Required Studs to get the shoe surface running true on the hub. What the Heck?

 

I can actually see exactly what you're pointing out in post #24 on close examination.