Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 10-08-2021, 03:07 AM   #1
ADB
Junior Member
 
Join Date: Sep 2020
Location: South Africa
Posts: 12
Default Generator field coils

Good day
I would like to know if anybody have information regarding the winding of the field coils for a 5 brush generator, basically the amount of turns for the field coils ,for me will be more cost effective to have it done here (South Africa ) than to import it.
ADB is offline   Reply With Quote
Old 10-08-2021, 10:45 AM   #2
katy
Senior Member
 
katy's Avatar
 
Join Date: Jun 2015
Location: Red Deer, Alberta
Posts: 5,008
Default Re: Generator field coils

I suspect that the field coils would be the same as a 3 brush generator with possibly different connections. Anyone?
__________________
If you don't hear a rumor by 10 AM, start one!.
Got my education out behind the barn!
katy is online now   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 10-08-2021, 01:59 PM   #3
rotorwrench
Senior Member
 
rotorwrench's Avatar
 
Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 16,367
Default Re: Generator field coils

Are yours damaged, missing, or do they just need to be re-wrapped with new insulation tape? If you have them, you can unwind them and check the number of coil windings and the gauge of the wire during the process.

I don't know how many turns they have since most folks check to see how many amps they draw if there are no open or shorted windings. The old originals are pretty resilient unless they set out in the elements too long.

There have been new sets of these available from a few sources but I don't know if they still are. One source is in the UK and the other in Canada but I don't see a lot of parts available as a general rule. The brush plate can be a hard to find on some of them.

Last edited by rotorwrench; 10-08-2021 at 03:50 PM.
rotorwrench is offline   Reply With Quote
Old 10-11-2021, 04:42 AM   #4
ADB
Junior Member
 
Join Date: Sep 2020
Location: South Africa
Posts: 12
Default Re: Generator field coils

The one I have still working, but the insulation doesn’t look good, the same for the winding. To be in the safe side I would like to replace the coils.
ADB is offline   Reply With Quote
Old 10-11-2021, 10:10 AM   #5
rotorwrench
Senior Member
 
rotorwrench's Avatar
 
Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 16,367
Default Re: Generator field coils

Sponsored Links (Register now to hide all advertisements)
It may be easier to rewind them locally or yourself with the correct gauge magnet wire. Many of them were wrapped with cloth type pressure tape but there are always alternatives to insulation as long as they are covered well. You will have to unwind one of them to count the number of turns it has.

If they still draw the correct amount of amperage (as an electro-magnet) when connected to 6-volt source then you may consider just replacing the insulation. They will produce enough magnetic gauss to generate the necessary 12 to 15-amps if the armature is still good. The powerhouse generator was the easiest one to work on and there are several good threads on them here if you do a search. During disassembly, check the Ohms of resistance of each individual coil and see if they are all about the same. That will give an idea of what to expect the newly wound coils to have. Set a pole shoe up do the winding around it but use some tape round it to allow for the thickness of the insulator tape installation after the coil is wound. It will have to fit around that shoe before it is reinstalled.

This link gives some Ohms for comparison. https://www.fordbarn.com/forum/showt...ouse+generator

Last edited by rotorwrench; 10-11-2021 at 10:27 AM.
rotorwrench is offline   Reply With Quote
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

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 11:52 AM.