[AT] Locking a differential

[charlie hill]

Interesting plan Robert.   You might want to try and find information on AC 
H3 or HD3 crawler.   It was basically a D-14 made into a crawler and might 
have used off the shelf AC parts.  I'm not sure how it's steering clutches 
were set up.

Sounds like your plan would work.  I don't know how long the hand clutches 
would hold up.  Also you might find a way to "transplant" parts from a 
common pickup  truck limited slip or locker into the AC differential.  You 
can find tons of those in junk yards.

Charlie
----- Original Message ----- 
From: "R Mull" <rbobmull at comcast.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Sunday, December 12, 2004 9:16 PM
Subject: Re: [AT] Locking a differential


>I have two CA Allischalmers tractors. One I use for parts and the other I 
>use for tractoring. I want to take the one I have been using for parts and 
>make a crawler out of it.If I could lock the differential, I could add 
>another hand clutch in the left hand axle(already has one in the right hand 
>axle and use the hand clutches for steering clutches. Thought about putting 
>20 inch or smaller (this will reduce the speed alsotruck tires on the back 
>for drive "sprockets"and using maybe some old tractor tires with the side 
>walls cut off for rubber tracks.Remove the front axle, steering gear, etc. 
>Make a straight front axle with 15 inch wheels and tires for front of the 
>tracks, mount it about where the bell housing is bolted to the engine 
>block. I don't have everything in my mind yet. If I can find a way to 
>defeat the differential, I think I will build this machine. It would make a 
>neat ATV.
>
> Thanks,
> Robert Mull
> Woodstock, Georgia
> ----- Original Message ----- 
> From: "H. L. Staples" <hlstaples at mcloudteleco.com>
> To: "Antique tractor email discussion group" 
> <at at lists.antique-tractor.com>
> Sent: Sunday, December 12, 2004 6:44 PM
> Subject: Re: [AT] Locking a differential
>
>
> I am sure there is a way to defeat the differential, perhaps by a
> strategically placed bolt or by doing a bit of welding.
>
> The tractor would move forward in a straight line or in reverse in a
> straight  line without placing undure stress on the drive line and tires.
> If you should want to turn then one of  tires would have to skid or
> mechanically break some of the internall compontents.
>
> The mechanical arrangement on the newer tractors for locking the
> differential is fairly simple, but adding something reversibel to disable
> the differential action might be complicated.
>
> What do you have in mind as a reason for locking things up ?
>
> H. L.
>
> -------Original Message-------
>
> From: R Mull
> Date: 12/12/04 15:44:44
> To: Antique tractor email discussion group
> Subject: [AT] Locking a differential
>
> Is there a way to lock the differential on a CA Allis-Chalmers tractor? I
> mean a permenant lock so both axles will turn all the time. I have looked 
> at
> the insides of a differential before , but didn't try to figure out a way 
> to
> lock one up. Didn't have a idea like I have an idea like I am having now 
> at
> the time.
>
>
> Thanks,
> Robert Mull
> Woodstock, Georgia
>
>
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