Antique Engines and Old Iron
[Home] - [HELP] - [Forums] - [Library] - [Photo Gallery] - [Groups] - [Classified Ads] - [Subscribe] - [Links] - [Books] - [Sponsors] -

Go Back   SmokStak > SmokStak® Antique Engine Community > Small Air Cooled Gasoline Engines > Wisconsin Engines
Forgot Password? Join Us!

Notices

Wisconsin Engines Single cylinder up to V4 engines.

Wisconsin Engines

Wisconsin AB on Master Vibrator Co. genset, help needed identifying


this thread has 11 replies and has been viewed 958 times

Reply
 
Thread Tools Display Modes
  #1  
Old 01-03-2017, 06:24:48 PM
flippper00 flippper00 is offline
Registered
 
Join Date: Nov 2016
Location: Seattle, Washington, USA
Posts: 16
Thanks: 0
Thanked 5 Times in 3 Posts
Default Wisconsin AB on Master Vibrator Co. genset, help needed identifying

This Wisconsin engine Master Vibrator Co. generator has what looks to be an AB engine, I think, and could use some help identifying it.

It was complete and original, not seized, has spark, and compression.

It has a Bendix Stromberg carburetor (1/2 P-23566 stamped on bottom), block marked AA-81-K, with a FM-J1 B7 magneto.

Generator head has a rusted nameplate, and box with a 0-150V Voltmeter and a rehostat knob on the gen head with just the manufacturer name visible, Master Vibrator Co.

Haven't tried to start it yet. First, it will get a new gasket set, and carb cleaning, and sump area cleaned, minimally. Later it might be stripped and painted black if I'm ambitious and it runs well.

Which engine is this? AB? Build year?

Any ideas on the generator head: model, watts, volts, current? Google doesn't return much information.

Thanks.
Attached Thumbnails
Click image for larger version

Name:	WP_002769.jpg
Views:	84
Size:	57.2 KB
ID:	271669   Click image for larger version

Name:	WP_002766.jpg
Views:	75
Size:	66.1 KB
ID:	271670   Click image for larger version

Name:	WP_002764.jpg
Views:	63
Size:	54.8 KB
ID:	271671   Click image for larger version

Name:	WP_002770.jpg
Views:	61
Size:	45.8 KB
ID:	271672  

Reply With Quote
The Following User Says Thank You to flippper00 For This Post:
Sponsored Links
  #2  
Old 01-03-2017, 07:11:17 PM
flippper00 flippper00 is offline
Registered
 
Join Date: Nov 2016
Location: Seattle, Washington, USA
Posts: 16
Thanks: 0
Thanked 5 Times in 3 Posts
Default Re: Wisconsin AB on Master Vibrator Co. genset, help needed identifying

Found a different number on the Bendix Stromberg carb: 25-139, pic attached.

This doesn't match the A-18010 number I expected to find for an AB.
Attached Thumbnails
Click image for larger version

Name:	WP_002772.jpg
Views:	40
Size:	90.3 KB
ID:	271684   Click image for larger version

Name:	WP_002771.jpg
Views:	37
Size:	48.8 KB
ID:	271685  
Reply With Quote
  #3  
Old 01-03-2017, 07:34:24 PM
Zira Zira is offline
Subscriber
 
Join Date: Nov 2004
Location: Apex, North Carolina, USA
Posts: 1,654
Thanks: 357
Thanked 433 Times in 341 Posts
Default Re: Wisconsin AB on Master Vibrator Co. genset, help needed identifying

Certainly appears to be an AB, with the small starter pulley. Could also be an AA but they are much less common. Pull the head if you really need to know.
Reply With Quote
  #4  
Old 01-03-2017, 08:04:27 PM
flippper00 flippper00 is offline
Registered
 
Join Date: Nov 2016
Location: Seattle, Washington, USA
Posts: 16
Thanks: 0
Thanked 5 Times in 3 Posts
Default Re: Wisconsin AB on Master Vibrator Co. genset, help needed identifying

Thanks for the answer.

I popped the head, and it is a 2 1/2" bore and 2 3/4" stroke, so AB, right?

Any clues here if it is an early or late production AB (1936-1949)?
Attached Thumbnails
Click image for larger version

Name:	WP_002773.jpg
Views:	32
Size:	69.8 KB
ID:	271690  
Reply With Quote
  #5  
Old 01-03-2017, 08:22:18 PM
flippper00 flippper00 is offline
Registered
 
Join Date: Nov 2016
Location: Seattle, Washington, USA
Posts: 16
Thanks: 0
Thanked 5 Times in 3 Posts
Default Re: Wisconsin AB on Master Vibrator Co. genset, help needed identifying

Doh! Found the AB-76 E (or is it an F?) stamp on the bottom of the cylinder head.
Attached Thumbnails
Click image for larger version

Name:	WP_002774.jpg
Views:	35
Size:	94.6 KB
ID:	271699  
Reply With Quote
  #6  
Old 01-05-2017, 12:45:53 AM
flippper00 flippper00 is offline
Registered
 
Join Date: Nov 2016
Location: Seattle, Washington, USA
Posts: 16
Thanks: 0
Thanked 5 Times in 3 Posts
Default Re: Wisconsin AB on Master Vibrator Co. genset, help needed identifying

The shroud was put in a 12V electrolysis bath for a few hours, rotated and cooked evenly

After some light scotch-brite, the serial and model stamps appeared faintly. Bore stroke is partially visible.

It is a Model ABS with an AB/ABN 25-139 carb, running at 1800 RPM for a 1KW genset, January 1945 production. Looks like ABS peak power is @3200 RPM, so I wonder if this was unused war production engines fitted to whatever post-war products?
Attached Thumbnails
Click image for larger version

Name:	WP_002803.jpg
Views:	37
Size:	87.4 KB
ID:	271771  
Reply With Quote
  #7  
Old 01-11-2017, 08:47:21 PM
flippper00 flippper00 is offline
Registered
 
Join Date: Nov 2016
Location: Seattle, Washington, USA
Posts: 16
Thanks: 0
Thanked 5 Times in 3 Posts
Default Re: Wisconsin AB on Master Vibrator Co. genset, help needed identifying

Got 'er running, cold start video on YouTube: https://www.youtube.com/watch?v=wU9yW0FZaCY. Though I suspect some crickets are chirping all over this thread.

The generator itself appears to only put out power with a load attached, and got that working today after some slip ring cleaning and patching a few frayed wires.
Reply With Quote
The Following 3 Users Say Thank You to flippper00 For This Post:
  #8  
Old 01-11-2017, 10:09:16 PM
s100 s100 is offline
Registered-II
 
Join Date: Jan 2008
Location: Detroit, Michigan, USA
Posts: 697
Thanks: 179
Thanked 406 Times in 281 Posts
Default Re: Wisconsin AB on Master Vibrator Co. genset, help needed identifying

The "Master Vibrator" name leads me to suspect this generator was purpose made to run concrete vibrators. Those are usually 180 cycle. Try putting a frequency meter on the old girl to see what you get.
Reply With Quote
  #9  
Old 01-11-2017, 10:32:31 PM
Vanman Vanman is offline
Subscriber
 
Join Date: Aug 2011
Location: Mission Viejo, California
Posts: 4,028
Thanks: 5,157
Thanked 1,717 Times in 1,152 Posts
Default Re: Wisconsin AB on Master Vibrator Co. genset, help needed identifying

From what I have seen, the Master Vibrator 180 cycle machines are three phase, six pole generators running at 3600 rpm to deliver 180 cycles. I have a belt driven one that's pretty cool. I think they made "regular" generators as well.

This one sounds like it's running 1800 rpm, so am guessing he lucked out and it's a four pole machine, generating 60 cycles. If so, very nice!

On the other hand, it's always possible that the governor has been tampered with....

Keith
Reply With Quote
  #10  
Old 01-11-2017, 10:56:17 PM
flippper00 flippper00 is offline
Registered
 
Join Date: Nov 2016
Location: Seattle, Washington, USA
Posts: 16
Thanks: 0
Thanked 5 Times in 3 Posts
Default Re: Wisconsin AB on Master Vibrator Co. genset, help needed identifying

This is definitely an 1800 RPM 60 HZ single phase 120 volt generator - got the gen head producing power today with a Kill A Watt attached. There is an old thread on a similar 2KW unit for 60 HZ single phase AC here, same manufacturer - https://www.smokstak.com/forum/showthread.php?t=71849. That thread was very helpful diagnosing the AC power issues. It seems this gen head needs a resistive load (60W incadescent bulb) to start producing volts.

My unit is the same as this one I found on YouTube - https://www.youtube.com/watch?v=Ac7W8vqR8vA
Reply With Quote
The Following User Says Thank You to flippper00 For This Post:
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

F o r u m Jump

Similar Threads Chosen at Random
Thread Thread Starter F o r u m Replies Last Post
Master Vibrator Engine JohnForbush Small Air Cooled Gasoline Engines 5 01-16-2014 12:24:13 AM
Master Vibrator Mike Patterson Magnetos, Ignition Coils and Spark Plugs 2 12-19-2011 10:57:09 AM
B-S Master Vibrator and other? Nevr-Enuf-Stuf Small Air Cooled Gasoline Engines 4 10-09-2011 07:46:17 PM
Wisconsin/Master Vibrator Generator help Antarctica Generators & Electric Motors General Discussion 35 04-01-2011 06:22:55 PM
KW Master Vibrator Doug Kimball Magnetos, Ignition Coils and Spark Plugs 1 01-23-2007 11:20:10 PM


Use "Ctrl" mouse wheel to change screen size.
All times are GMT -4. The time now is 01:23:30 AM.

Smokstak and Enginads site search!


All use is subject to our TERMS OF SERVICE
SMOKSTAK® is a Registered Trade Mark - A Community of Antique Engine Enthusiasts
Copyright © 2000 - 2016 by Harry Matthews P.O. Box 5612 - Sarasota, FL 34277