The Ford Barn

solidaxle · 05-27-2013, 10:36 AM

Stamped 8BA-D. I think this is the date code A-1-1, correct? Has two brushes and a field, ground and armeture connection.
Second part of the question . Can I install a generator fan mounted pulley on it?

John R · 05-27-2013, 01:19 PM

The "8BA-D" identifies it as to type, not date. This is a common 35 amp, 6 volt unit used on both V8 and 6 cyl from 48 thru 51. To run a fan off the front, you need to modify the existing pulley. None of the early (pre-1940) fan-mount pulleys are very suitable for use with the late generators because of differences in front plates and armatures.

solidaxle · 05-28-2013, 03:03 AM

Quote:

Originally Posted by John R

The "8BA-D" identifies it as to type, not date. This is a common 35 amp, 6 volt unit used on both V8 and 6 cyl from 48 thru 51. To run a fan off the front, you need to modify the existing pulley. None of the early (pre-1940) fan-mount pulleys are very suitable for use with the late generators because of differences in front plates and armatures.

Do all generator pulley's interchange after 1940, to 1953? I don't see how I could modify the existing without changing the assembly out.

John R · 05-28-2013, 08:51 AM

40 to 48 generator pulleys mount to the armature shaft in a different way than the 49 -53 pulleys. The 40-48 have internal threads, thread onto the armature shaft and are retained by a snap ring. The 49-53 are not threaded, but have a Woodruff key and are retained by a lockwasher and nut (more or less the same as the pre-39 generators). Also, the 40-48 pulleys are not fan-drive.
To modify the existing 49-53 pulley to drive a fan, a fan mounting piece has to be fabricated and welded to the pulley. PM me for more details on this modification.

Karl Wolf · 05-28-2013, 10:40 PM

I'm running a stock Ford pulley -with a fan- on a 12V (1956 up) armature... All stock Ford parts, found at swap meets. So, it's possible. The pulleys I've used thread on...
I would be hard pressed to speak to the exact parentage of the parts, though.
Karl

Kurt in NJ · 05-28-2013, 11:54 PM

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What you want to try is a pulley from 37-39 2 brush generator, there are several diameters -I know they will fit the 42-48 style, have never tried on the 8ba type held to the bracket with a band ---what you want to look in is the "green book" there will be pictures, there may be some versions with the threads in the pulley like 42-48, but most are held on with a nut.

05-27-2013, 10:36 AM	#1
solidaxle Senior Member Join Date: Mar 2011 Location: upstate NY Posts: 478	What generator do I have? Stamped 8BA-D. I think this is the date code A-1-1, correct? Has two brushes and a field, ground and armeture connection. Second part of the question . Can I install a generator fan mounted pulley on it?

05-27-2013, 01:19 PM	#2
John R Senior Member Join Date: May 2010 Location: near Washington, DC Posts: 559	Re: What generator do I have? The "8BA-D" identifies it as to type, not date. This is a common 35 amp, 6 volt unit used on both V8 and 6 cyl from 48 thru 51. To run a fan off the front, you need to modify the existing pulley. None of the early (pre-1940) fan-mount pulleys are very suitable for use with the late generators because of differences in front plates and armatures. __________________ Those who do not move do not die, but are they not already dead?

05-28-2013, 08:51 AM	#4
John R Senior Member Join Date: May 2010 Location: near Washington, DC Posts: 559	Re: What generator do I have? 40 to 48 generator pulleys mount to the armature shaft in a different way than the 49 -53 pulleys. The 40-48 have internal threads, thread onto the armature shaft and are retained by a snap ring. The 49-53 are not threaded, but have a Woodruff key and are retained by a lockwasher and nut (more or less the same as the pre-39 generators). Also, the 40-48 pulleys are not fan-drive. To modify the existing 49-53 pulley to drive a fan, a fan mounting piece has to be fabricated and welded to the pulley. PM me for more details on this modification. __________________ Those who do not move do not die, but are they not already dead?

05-28-2013, 10:40 PM	#5
Karl Wolf Senior Member Join Date: May 2010 Location: Mill Valley,Ca. Posts: 1,509	Re: What generator do I have? I'm running a stock Ford pulley -with a fan- on a 12V (1956 up) armature... All stock Ford parts, found at swap meets. So, it's possible. The pulleys I've used thread on... I would be hard pressed to speak to the exact parentage of the parts, though. Karl

05-28-2013, 11:54 PM	#6
Kurt in NJ Senior Member Join Date: May 2010 Location: on the Littlefield Posts: 6,159	Re: What generator do I have? Sponsored Links (Register now to hide all advertisements) What you want to try is a pulley from 37-39 2 brush generator, there are several diameters -I know they will fit the 42-48 style, have never tried on the 8ba type held to the bracket with a band ---what you want to look in is the "green book" there will be pictures, there may be some versions with the threads in the pulley like 42-48, but most are held on with a nut.