Farm Equipment - Little more RPM's for the B

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Little more RPM's for the B

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=13484
Printed Date: 01 Feb 2025 at 5:03pm
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Topic: Little more RPM's for the B

Posted By: Charlie175
Subject: Little more RPM's for the B
Date Posted: 06 Jun 2010 at 7:02pm

Might do my first pull this weekend, 3,000lbs class.
I thought I would bump up the RPM's a bit to get an HP or 2, at least to get within CA territory. What do I need to adjust to do this? Just swap out the governor spring with a CA one?

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Charlie

'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD

Replies:

Posted By: BrettPhillips
Date Posted: 06 Jun 2010 at 8:15pm

Charlie:

Changing the spring is probably the best and most reliable way to change engine speed. I'm guessing that you'll be pulling at the Woodstock, VA show? If so, I may be there to watch the pull, and I'll probably go on the tractor ride on Sunday morning if hay allows. Not sure what I'll bring, although it will be either the C or the D14.

Posted By: Dick L
Date Posted: 06 Jun 2010 at 8:36pm

You can go to the hardware store and get what is called a cot spring. That is the next thing to stringing a wire. If you are pulling a transfer sled the extra rpm's you get won't help much. You get extra horse power only if you can maintain the higher rpm's unless you have changed to a larger bore or stroke or both. The only way you will be able to maintain the extra rpm's is if you spin in the 3000 pound class.

Posted By: Charlie175
Date Posted: 07 Jun 2010 at 6:18am

I think they use the sled where people step on at intervals but I am not sure. Standard bore and stroke and I will weigh in around 2400 so it's not loaded down. My first pull so I am just heading over as is to see how it does.

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Charlie

'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD

Posted By: Dick L
Date Posted: 07 Jun 2010 at 6:53am

Find some more weight and don't get the drawbar above 15 inches. The front comes up to easy if you don't have a lot of weight on the front. I pulled the C at 13 inches. I used spacers under or over the drawbar to bolt the clevis fast to get the bet balance height. Hook low on a big tree with about six foot between the tree and clevis where you can get good traction to test the balance. Set the rear tire pressure at about 6 pounds. That way when the tractor starts to pull down you will already know how it will react. You will be pulling against other tractors that will be at 3005 if they can get away with it.

When I was pulling I bought as many hooks as they would let me buy and went down the track with different drawbar settings as well as different air pressures. I also watched the tires on the sled as well as the tires on the other pullers. You can some times get an advantage going where the others have not gone. Other times you will want to be in the longest pull ahead of you exact tracks to get a inch or two longer pull.

Bottom line be aware of all that is happening and by all means have fun.
It is always more fun to win than lose but you can have fun when not winning by learning. I always went home happy.

Posted By: Wes (VA)
Date Posted: 07 Jun 2010 at 7:07am

Oh..I thought you were trying to compete with me and my CA at Weyers cave this thursday! good luck to ya though! -Wes

Posted By: Charlie175
Date Posted: 07 Jun 2010 at 7:29am

Hey Wes, I didn't know about Weyers Cave, they have their Annual pull then?

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Charlie

'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD

Posted By: mlpankey
Date Posted: 07 Jun 2010 at 7:45am

Purchase a d 15 series 2 spring fo it

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people if they don't already know it you can't tell them. quote yogi berra