old Wisconsin engine ID

Ken Kauffman

New User
I recently acquired and am restoring an old Wisconsin single cylinder engine. From pictures and manuals I have been able to identify it as an AE or AH series; but the ID plate is totally missing. It is a tall cast iron engine (two feet) tall and it weighs well over 100 pounds.

The carb, air cleaner and magneto are on the left side when one is facing the flywheel side. The fuel tank is on the right.

The flywheel is unique. It is heavy cast iron with three 3/4-inch holes through it apparently for removing it from the shaft. The air vanes are welded to a light-weight plate ring that bolts to the flywheel with six 3/8ths bolts. The shaft is set up for crank start.

The carburetor is a Zenith 61 series--all cast iron.

The magneto was missing, but I have a base-mounted magneto with drive ears that looks like it will fit exactly.

I have the AE and AD series manual, but it isn't very helpful in distinguishing engine types. The pictures of both the AE and AH series match the engine very well, except I have not seen this flywheel in any pictures or on any websites.

Can anyone help me decide exactly which engine this is?
 
AE has an air-vane governor and 3" bore X 3 1/4" stroke. AH has an air-vane governor but with a 3 5/8" bore and 4" stroke. Quite different.
 

Thank you for the tip. This engine has an internal weighted governor so it must be neither. What do you suggest?

Ken
 
I have the spec sheets from ASECC. I guess the only way to tell is to pull the head and measure the piston diameter and stroke length. Right? At this point I am thinking AHH. Thanks.'

I am still very curious about the two-piece flywheel, though.

Ken
 
ADH or an AEN. AEN was pretty common in the 50s.
I've got one on a big cement mixer. Uses a
flyweight governor.
 
Thanks, I thought that was what I had but the ASECC spec's say the AE, AEH and AEHS all have air vane governors. This one is clearly an internal flyball governor; and the flywheel is a solid disc casting with a mild steel ring and vanes bolted on its face. I have never seen a flywheel made like this.

You are right, the ADH and AEN have internal governors. Unless I can find something about that flywheel I guess the only way to really know is to measure the piston diameter and stroke.

Ken
 

Today I pulled the head off and found the piston to be 3 5/8ths inches in diameter and the stroke is a full 4 inches. Those spec's along with the internal governor add up to AHH and 9.2 HP. I would still be interested in anything anyone knows about the unique flywheel.
 

Do you have a picture of it?
This is my old 56, 8.25 Wisconsin
mvphoto13142.jpg


mvphoto13143.jpg


mvphoto13144.jpg
 

I am technologically challenged and don't know how to post pictures. I could get my grandkids to do pictures for me, but I have not done that yet.

The flywheel on your engine is not like mine. Mine is two pieces bolted together--vanes on one and the other is solid cast. Also yours has cogs for electric starter. Mine is set up to crank.
 

Here is a web site for small engines "The Antique Small Engine Collectors Club" http://asecc.com/


Message Boards
http://asecc.com/forum/viewforum.php?f=5
mvphoto13301.gif
 

Manual for the Model(s) AA, AB, ABS, ABN, AK, AKS, AKN.
http://lib.store.yahoo.net/lib/yhst-77226736812062/wisconsin_aa_ab_ak_series_parts_catalog.pdf

Manual for the Model AGND
This one has a hand crank 'not a pull rope'.
http://lib.store.yahoo.net/lib/yhst-77226736812062/agnd.pdf

Manual for the Model aen_aenl_aens

http://lib.store.yahoo.net/lib/yhst-77226736812062/wisconsin_aen_aenl_aens_parts_catalog.pdf
 

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