obsolete 1939 B Rim Clamp
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=165393
Printed Date: 29 May 2025 at 12:48am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: obsolete 1939 B Rim Clamp
Posted By: Ken in Texas
Subject: obsolete 1939 B Rim Clamp
Date Posted: 28 Oct 2019 at 9:03pm
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The first 6000 or so 1938 B rear rims were 24" 3 piece split rims with special 3/4 bolt clamps cast to fit them. In later 38 and into the most all of 1939 production one piece 24" rims were mounted using the 2 footed clamps pictured. Still using 3/4 plain and excentric bolts. Anyone know what tire size was used on both of these obsolete rather narrow rims back then ?.
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Replies:
Posted By: Ken in Texas
Date Posted: 28 Oct 2019 at 9:09pm
| I have a good set of the one piece rims with correct footed clamps on the 39 B I'm restoring and I believe todays 8.3 24 tires were standard back then because the rims are so narrow |
Posted By: Dick L
Date Posted: 29 Oct 2019 at 6:23am
I have one somewhere with the original size tire. I am not sure the weather has not removed the size from the side wall. The rain has it so slimy where it might be that my electric wheelchair will not get to the area until it dries up or freezes. I moved getting stuff out of the way to put an addition on my shed. The rim was about gone. 
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Posted By: steelwheelAcjim
Date Posted: 29 Oct 2019 at 7:57am
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8 X 24. Or 8.00 X 24. Depending on tire manufacturer. Assuming Firestone was used. ------------- Pre-WW2 A-C tractors on steel wheels...because I'm too cheap to buy tires! |
Posted By: Ken in Texas
Date Posted: 29 Oct 2019 at 8:03am
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Dick L I'm so happy you posted a reply. This photo of the second style B rim used showing one of the four small angles riveted to the bottom of the bead flange says a picture is worth a thousand words . The two footed special clamps fit behind the tab with a foot on both sides to keep them in place when tight. Do you have any of the special clamps that used 3/4 bolts ? I have extras if you want a set. For Free of coarse. By the width of the drop center you can see how narrow these old rims were. Less than 7 Inches. I ran across a old thread where you doubt Split Rims were ever used on a B. I wish you could have been here when Gary Arneson and I Restored his B #751 with its split rims back like it was when new. ME LIKE A DUMMY TOOK NO PICTURES to show you. The special clamps used with the split rims had AM casting numbers. I will be seeing Gary soon to see if he has any pictures. He sold B 751. It may still be here somewhere in Texas.
Good to hear you are still here with us . God Bless
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Posted By: PaulB
Date Posted: 29 Oct 2019 at 8:15am
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The B that I grew up with (#870) had a two piece rim that had a lock ring on one edge just like a truck rim. The clamps used were kinda like a horseshoe and they had tw feet that matched a groove all the way around the rim with a drive nub at one spot. Unfortunately there is no way I can ever get pictures of that tractor and I doubt I could find any old pictures that would show the detail close enough. I do have some of those second style clamps as you show in the original post on my NOS parts for Bs. ------------- If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY |
Posted By: Ken in Texas
Date Posted: 29 Oct 2019 at 8:22am
| Thanks Paul Maybe we can one day convince Dick L that early 1938 Bs had split rims. |
Posted By: PaulB
Date Posted: 29 Oct 2019 at 8:28am
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Some people will never believe facts. Some will also insist that CE type engine could have a crankshaft from the factory, that sent pressurized oil to the rod bearings. ------------- If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY |
Posted By: Gerald J.
Date Posted: 29 Oct 2019 at 9:17am
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In those days the tire width was defined by the rim width, not the maximum width of the tire. The tire dimensions specified on the tire changed in the next 10 or 15 years to be the maximum width of the tire, wider than the rim width. Today farm tire catalogs available from most tire makers list the preferred rim width for a given tire width. With an 8" rim the tire might be as wide as 10 inches. You have to watch for fender clearance inside the rim for wide tires or add spacers to move the rim further from the fender so the tire clears. Gerald J. |
Posted By: Dick L
Date Posted: 29 Oct 2019 at 4:48pm
I have been convinced since I was convicted of not being able to be convinced. That would have been shortly after I stated my doubt. I think! With my memory I might have known when I doubted and forgot that I knew. When a person gets this old I was convinced, until this post, that everyone doubted I remembered much of anything. The pressure people put on old people thinking they need to remember stuff!  
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Ken in Texas wrote:Posted By: chaskaduo
Date Posted: 29 Oct 2019 at 5:50pm
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Well I'm never wrong, and once I thought I was wrong, but I was wrong. We love ya Dick and don't you ever forget that. ------------- 1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp |
Posted By: Dick L
Date Posted: 29 Oct 2019 at 7:29pm
It goes, ( once I thought I was wrong but I was mistaken)
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Posted By: chaskaduo
Date Posted: 30 Oct 2019 at 7:05am
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See Or I see said the blind man   ------------- 1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp |
Posted By: JimD
Date Posted: 30 Oct 2019 at 9:00pm
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I have a pile of those wedges somewhere.. Need to sell them before I lose them. (If I can find them now) ------------- Owner of http://www.OKtractor.com" rel="nofollow - OKtractor.com PM for an instant response on parts. Open M-F 9-6 Central. We have new and used parts. 877-378-6543 |