Technical Spindle king pin issues. Adapter question

So I put a new drop axle on and the kingpin size is .81 the old kingpin are about .93. No problem so I just get new spindles. So now the brake backing plates will not go on the spindle. My question is there a bushing or a adaptor that will let me use my old spindles?
Or are there some new spindles that will clear the backing plates on my old drums?
Pic of new spindle with backing plate






Pic of old spindle with backing plate



Sent from my iPhone using The H.A.M.B. mobile app

 

Looks like if I had a bushing for the old spindles to make the new kingpins fit it would work.
.93 od to a .81 id. Do they make such a thing


Sent from my iPhone using The H.A.M.B. mobile app

 

Are those Lincoln brakes/spindles?

 

No they don't make a bushing like you need that I know of. Were it me in your Fix I'd get a reamer that is .935 and open up the Axle boss to fit. They make adjustable reams for fine tuning a specific fit. Actually is not that uncommon in the Machine shop world.
The Wizzard

 

Most Lincoln Brakes or F250 brakes require some relieving of the top of the spindle for the backing plate to fit into place.

 

I am not sure what the brakes or the spindles are off of. I cant find anything with a kingpin that size.

 

Grind the spindles. It is a thing that is done for other brake swaps.



Notch and plate backing plates, too.

 

They make these but it still doesn’t look like it will clear with those. The backing plate looks to deep. Not sure.



Sent from my iPhone using The H.A.M.B. mobile app

 

Sent from my iPhone using The H.A.M.B. mobile app

 

Would you be so kind as to post a picture of the "business side" of the backing plate?

 

.Grinding the spindle can't work if I see this correctly. If you grind, then the top of the new kingpin and boss will not clear the backing plate....and even if you cut a notch in the plate for the kingpin top, it would then be hitting the wheel cylinder body.


.
And the repro spindles you show that already have a notch, probably won't work either and still hit the wheel cylinder.

I would have bushings made to use the old parts.

.

 

Any machine shop that can survive in this economy should be able to make you bushings in a snap.

 

Those are '39-'40 Lincoln backing plates IIRC and naturally they fit the Lincoln spindles you previously had, but I don’t think they will work with early Ford spindles, and for sure not with the ‘37-‘41 style you bought.
‘32-‘36 spindles do have the same bolt pattern but the thrust bearing goes on top of the spindle on those and there is no clearance at the backing plate for it. Even if they did work you would still need to modify a set of ‘32-‘36 king pins by cutting off the brake actuator cup from the top of the k/p’s and welding on a strong washer, like a 1/4” thick to support the front of the car. The span between the yokes on the Linc’ spindles places the thrust bearing under the axle, but the ’32-‘36 Ford spindles have it on top of the spindle.
I wish there was better news but I think the deep recessed ‘39-‘40 Lincoln backing plates might require the Lincoln spindles.

 

If the Spindle you started with works with your backing plate and all that puts a Kink in the package is the King pin size, fix the king pin issue. Have under sized i.d. bushings made to fit the pin that works with the Axle or bore the Axle to work with the pin that fits the spindle. This is all a very standard Hot Rod Mix-n-Match process. You won't be the first guy to have done either of the two choices. I personally have done them both.
The Wizzard

 

I thought as much. Thanks for verifying my suspicions.

 

In my comment I was referring to the MT or Wilson Welding Lincoln style backing plates. They are a close match to the F250's and not the original Lincoln's

 

Earlier Lincolns have a deeper recess which basically prohibits the use of any other spindles. Later ones have a shallow recess which is OK.

 

The Lincoln axel has a different camber inclination that Ford, so re bushing the Lincoln spindles will allow you to fit the backing plates to the Ford spindles, but it will not work like you would like it too.
If you bend the Ford axel to correct the camber to what you need it to be, it could work.

 

Yup, and if I remember correctly, there are three possible backing plate offsets in the early Lincolns.

I am pretty sure that even if the hub fits on the early Ford spindle, the drum is not going to line up.

I would just have bushings made, and keep the current spindles and brake setup.

Camber can be fixed at a truck alignment shop.

 

could the backing plates be rotated slightly so they could be ground/notched?

 

Thanks!! Not all good news but it is my options.

 

Lots of knowledge here I really appreciate all the input.

 

Close but not right.


Sent from my iPhone using The H.A.M.B. mobile app

 

So what is a good economical drum brake set up to use if I decide to use these spindles?

 

If that is a cast iron axle you cannot bend it to change the camber. It will break.

Might need to use the new spindles with the new axle and make some spacers to put the Lincoln backing plates at the right depth to use with some 40's Ford ( not Lincoln) hubs and drums.

 

Yea probably stay with the new spindles. What are the options for front brakes with the new spindles.

 

Can you add some info?... I read that as there was another axle you replaced on the car?...or did you get the Lincoln plates and spindles during a new build?


BTW;
I only use all original Ford parts. My avatar 32 has a 35 axle I dropped, then it already had 40 brakes and spindles on that axle with mint drums, and it stops fine with the big Olds Rocket engine. 55 olds rear brakes.
.

 

The Lincoln wider axle and all the brake stuff was on it. I relocated the axle back 12” and bought a drop axle.
This is what it did look like.




Sent from my iPhone using The H.A.M.B. mobile app

 

I lowered the bed. Redoing the front end where the axle is not way out front. Repaint put new gas tank under a wood bed and some other mods.



Sent from my iPhone using The H.A.M.B. mobile app

 

Easy and cheap + self energizing = 53-56 F100 brakes.