Farm Equipment - How to read RPMs on Allis 201

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How to read RPMs on Allis 201

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=57687
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Topic: How to read RPMs on Allis 201

Posted By: brbrooks83
Subject: How to read RPMs on Allis 201
Date Posted: 01 Oct 2012 at 11:40am

Is there a easy way to read RPMs on on my WC? I want to do a little fine tuning for pulling Thanks Brandon

Replies:

Posted By: albatros_3
Date Posted: 01 Oct 2012 at 12:44pm

I use a Dwell/Tach meter on the WD-45 when I'm fine tuning everything. You can pick them up at just about any auto parts store.

Posted By: SteveM C/IL
Date Posted: 01 Oct 2012 at 12:58pm

Don't know if that method will work on a magneto system.Bout all else you can do is use a shaft tach on the pto. Then,of course,you need to know engine speed at say 540 pto.Many tractors have 540 pto at less than high idle rpm

Posted By: brbrooks83
Date Posted: 01 Oct 2012 at 1:14pm

Its converted to a 12volt system

Posted By: Butch(OH)
Date Posted: 01 Oct 2012 at 1:27pm

Best/ chespest that works in almost all situations is a photo tach. Mine came from Harbor Freight on sale $39 and works great.

Next best that works on any shaft you can get it on would be a contact type tach. S-W made them for years and maybe still do? but they aren't pocket change cheap at least my pocket change. Also found on ebay.

Cheap but last choice for me would be a dwell tach meter because all it is good for is engines.

Actualy I have all three in the shop but the only one that sees much usage now is the photo tach.