Farm Equipment - Over drive gear boxes

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Over drive gear boxes

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=50069
Printed Date: 23 Aug 2025 at 10:20am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Over drive gear boxes

Posted By: MACK
Subject: Over drive gear boxes
Date Posted: 04 May 2012 at 10:00pm

Our overdrive gear boxes for 180-200 should be out next week. Almost any RO. over or under. Call 660 828 4310 MACK

Replies:

Posted By: SteveM C/IL
Date Posted: 04 May 2012 at 10:25pm

Excuse my ignorance but what's the purpose? Not knocking it just don't understand.Is this for pulling applications to get desired gearing?

Posted By: MACK
Date Posted: 05 May 2012 at 7:06am

Yes they are for tractor pulling. Goes in place of PD. MACK

Posted By: DougG
Date Posted: 05 May 2012 at 12:00pm

Id like to know more about them !

Posted By: Bob(FL)
Date Posted: 05 May 2012 at 12:32pm

I see an infomercial in the future, stay tuned.

Posted By: DrAllis
Date Posted: 05 May 2012 at 12:51pm

When you need a gear faster than "road gear".....call Mack !!!!!!!!

Posted By: JoeO(CMO)
Date Posted: 05 May 2012 at 4:05pm

Very Interesting!

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Posted By: MACK
Date Posted: 05 May 2012 at 10:37pm

They are a CNCed gear box that goes where the PD clutch was. No shafts to replace. It is a self contaned unit. We can provide almost any speed change you want. If you don't get the right speed it only cost around $200. to upgrade to another RO.

Price is $2500. with 2 1/4" wide gears. They will fit 180-200.

Give me a call @ 660 828 4310 or 660 663 9173 Eugene McNeely

Jameson, Mo MACK

Posted By: MACK
Date Posted: 05 May 2012 at 10:43pm

They can be made to fit D17 or D19 . MACK

Posted By: SteveM C/IL
Date Posted: 06 May 2012 at 12:13am

That is a really neat thing you guys came up with and a decent price to go with it!!

I'm not a puller but have been around some enough to know that gearing can make you the winner. Maybe Orange will be taking even more "winnings" home now.

Posted By: MACK
Date Posted: 06 May 2012 at 6:36am

The gears are 1 1/4 wide( NOT 2 1/4) sorry for the mistake. I thaught of the mistake after I went to bed last night. MACK

Posted By: MACK
Date Posted: 07 May 2012 at 8:48am

Bump

Posted By: SteveM C/IL
Date Posted: 08 May 2012 at 9:23pm

bump

Posted By: DanWi
Date Posted: 08 May 2012 at 9:33pm

Not a puller myself but I hope this is a good question What kind of horsepower are these units estimated to withstand?

Posted By: MACK
Date Posted: 08 May 2012 at 9:51pm

They will hold over 1200 HP. Will hold more power than the shaft between clutch and gear box. MACK

Posted By: SteveM C/IL
Date Posted: 08 May 2012 at 11:27pm

How much "juice" can a jacked up 301 put out?There must be a point at which some componet can't handle it.