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Old 01-27-2021, 01:37 PM   #1
34fordy
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Default Pitman arm question

Will other pitman arms with the replaceable ball, interchange with the 33/34 pitman arm? The 1932 or F-1 ?
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Old 01-27-2021, 01:40 PM   #2
Mart
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Default Re: Pitman arm question

I'd hazard a guess that a 32 one would, but not f1. F1 is a different shape and does not have a bolt in ball.

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Old 01-27-2021, 01:48 PM   #3
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Default Re: Pitman arm question

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Originally Posted by 34fordy View Post
Will other pitman arms with the replaceable ball, interchange with the 33/34 pitman arm? The 1932 or F-1 ?
Without having any SPECIFIC information to offer, I'd suggest that you also pay attention to the "clocking" ......the position of the ball (fore and aft) when the steering wheel/steering box is at center of travel. Seems like pick-up truck columns mounted at a different angle than passenger cars back then, just accounting for one difference. DD
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Old 01-27-2021, 01:59 PM   #4
34fordy
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Default Re: Pitman arm question

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Originally Posted by V8COOPMAN View Post
Without having any SPECIFIC information to offer, I'd suggest that you also pay attention to the "clocking" ......the position of the ball (fore and aft) when the steering wheel/steering box is at center of travel. Seems like pick-up truck columns mounted at a different angle than passenger cars back then, just accounting for one difference. DD
Speaking of clocking, ---When the sector is in the middle and at the "sweet spot" should the pitman arm be true vertical?
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Old 01-27-2021, 02:01 PM   #5
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Default Re: Pitman arm question

Initially the '33 sector arm had a bolt-in stud, at least on Canadian-built '33s (although the part number forged onto the arm is not uniquely Canadian) which would be ideal for your purposes,but unfortunately survivors are right up there with hen's teeth.
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Old 01-27-2021, 02:37 PM   #6
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Default Re: Pitman arm question

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Quote:
Originally Posted by 34fordy View Post
Speaking of clocking, ---When the sector is in the middle and at the "sweet spot" should the pitman arm be true vertical?
Just a 'WAG' ....(Wild-Assed Guess).... on my part, but I'd guess YES...IF the spindle (and steering arm) are original. Here is some very interesting info (below) compliments of "glennpm" from a previous post of his. Hope this helps. DD
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FROM GLENN:

"Here is a picture of both of the 32 Pitman arms with the "B" or truck one on the top. There is a one tooth difference between the two.

The rotation of the B would push a fixed length drag link further to the front of the car and deceases the desired 90 between the steering arm and the drag link.

If you you have a B as mentioned above, you can either remove the indexing teeth at each 90 or file those indexes to make 8 new teeth. Either way would allow you to place the pitman wherever you need to maintain the 90. All else being correct, one tooth CCW.


This morning I had a thought. How much angular movement does 1 tooth give you?
There are 36 teeth (the 90 apart "keys" count for 2 teeth each) so 360/36 gives you 10 degrees at the Pitman arm. For a stock 1932 with 13 to 1 worm/sector shaft ratio, 1 tooth would be 13 X 10 = 130 steering wheel rotation!"


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Old 01-27-2021, 03:14 PM   #7
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Default Re: Pitman arm question

I believe one of the Model A parts suppliers is rebuilding the 33-4 pitman with a new ball
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Old 01-27-2021, 03:50 PM   #8
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Default Re: Pitman arm question

Thanks V8COOPMAN,


I was going to add my info and saw that you already did!


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Old 01-27-2021, 04:45 PM   #9
34fordy
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Default Re: Pitman arm question

Thanks for all the good information. Very interesting looking at the two arms and the V8COOPMAN thought on the "steeper" angle of the steering column on the pickup. That would bring the pickup arm back to vertical it appears. And now I remember that the column drop on the car and pickup, although very similar in appearance have a different tube angle. Thanks to all !!
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Old 01-27-2021, 06:12 PM   #10
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Default Re: Pitman arm question

That's why there are elongated holes in the '33-'34 frame for the sector housing attachment to accommodate two different column angles.
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Old 01-28-2021, 03:32 PM   #11
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Default Re: Pitman arm question

If the F1 fits your application, why not just use a bolt in ball stud? Really no different than a tie rod; just older technology.

A torch can bend it to any shape you need and a triangle file can cut new teeth into the blockers.
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Old 01-29-2021, 01:13 PM   #12
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Default Re: Pitman arm question

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A torch can bend it to any shape you need and a triangle file can cut new teeth into the blockers.
Yes, fairly easy to cut the new groves.
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Old 02-04-2021, 05:06 AM   #13
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Default Re: Pitman arm question

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Originally Posted by 34fordy View Post
Will other pitman arms with the replaceable ball, interchange with the 33/34 pitman arm? The 1932 or F-1 ?
YO....I just ran across a note that says:

"All Ford Parts: 800-532-1932 They rebuild them 175.00 minus your core 100.00 I have no idea how they are attaching the new ball, as a guess brazing."

Also, any '35-'36, '37-'40, '41, or '42-'48 Pitman arm will fit the splines on your '34 box. You could bolt-in or have a replaceable ball stud welded into the small, tapered hole. You might have to file-down the four indexing splines with a triangular file to clock correctly. Just another idea. DD
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Old 02-04-2021, 11:30 AM   #14
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Default Re: Pitman arm question

I modified an F100 box for my 32. I did not like that the big pitman arm interfered with the stock location bolts. I machined the sector for a Model A pitman arm. It was too long and had the ball end. I shortened it and welded on a boss for a regular tie rod end. The arm welded great and worked fine for years. I have some cut off steering arms other people cut. Free if you need a boss.
The angle of the pitman arm is not so critical if you are using an adjustable drag link.
Especially if using a dropped axle.
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Old 02-04-2021, 12:02 PM   #15
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Default Re: Pitman arm question

When we built my 32 pickup I used a Neal Jennings 37 Hudson box and first tried the 32 arm which fit but didn't clear the wishbone so I switched to the 34 arm which worked perfect. I did have to file out the larger locating splines to get the arm to clock correctly.
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Old 02-04-2021, 12:05 PM   #16
Tim Ayers
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Default Re: Pitman arm question

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Originally Posted by Krylon32 View Post
When we built my 32 pickup I used a Neal Jennings 37 Hudson box and first tried the 32 arm which fit but didn't clear the wishbone so I switched to the 34 arm which worked perfect. I did have to file out the larger locating splines to get the arm to clock correctly.
How did you like the '37 Hudson box. How did you like it compared to a early Ford box?
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Old 02-04-2021, 12:34 PM   #17
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Default Re: Pitman arm question

Here is a little info I found on the conversion.

https://www.hotrod.com/articles/1206...n-32-34-fords/
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Old 02-04-2021, 01:09 PM   #18
Andy
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Default Re: Pitman arm question

I think the best side steer box is the 47 59 Chevy pick up boxes.They are recirculating ball design and steer as well as can be done. They are much much better than the Hudson/F100 boxes.
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Old 02-04-2021, 01:31 PM   #19
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Default Re: Pitman arm question

I used a cast corvair reversed box inside the frame on my 34 and a ford pitman arm fit. I had to file the flats to clock it. and it worked great. But that was 35 years ago.
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Old 02-04-2021, 04:09 PM   #20
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Default Re: Pitman arm question

oops

Last edited by 34fordy; 02-04-2021 at 04:18 PM. Reason: wrong forum
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