Generator pulley 59 for a fan bolt om

[3W Hank]

I has a the older 6V generator ( round cut off regulator ) and a pulley that one can bolt a fan to.
I will replace the generator to the never 40’s style 6V and separate regulator. The one I bougt has a pulley with no bolt holes to a fan ( se pic )
I saw one engine that had the never generator but a pulley with boltholes for a fan ( se pic )
But axle diameter is not the same so how is this done.

[cas3]

There are lots of pulleys. you need to find the one for your gennie. 1st, what is your shaft, what size, and got a key way? Figger out what you need then look at ebay for the correct shaft size with a fan mount. Also, lots of different pulley diameters. what speed would you like to run your fan?

[Charlie Stephens]

I think you are looking for a '39 standard generator and pulley. Check the Green Bible and see what else it fits.

Charlie Stephens

[deuce lover]

His pics are so small but it appears he has a 40-48 gen.Those 2 brush 39 std gen are tough to find.

[Tim Ayers]

Charlie NY or anyone with a lathe can cut internal threads in an earlier pulley so it can thread on to the later thread shaft. As mentioned, the '39 standard pulley is a tough one to source.

[jimTN]

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If you put a threaded pulley on, better have a lock nut in front! They can unravel and send a fan into your rad.

[Tim Ayers]

Originally Posted by jimTN

If you put a threaded pulley on, better have a lock nut in front! They can unravel and send a fan into your rad.

Good point, Jim. 100% accurate. On my maiden voyage with my roadster, after about 30 minutes of driving I was hearing this ting, ting, ting sound from the front as I revved.

I pull over to check it out and the pulley did just that. I did not have a nut on it at the time. Thank goodness no damage other than paint loss.

[tubman]

I may be out of my depth here, but isn't there a difference in the front bearings in pre-war generators depending on whether they were fan mounts or not? I seem to remember reports of problems with fans mounted on generators not specifically designed for them. I may be all wet, but if it were me,I'd like to be sure.

[3W Hank]

I can click on my picture and they large and one could zoom to.

The pulley on my 40’s generator has maybe 1.5 thread out side so no nut was ever there.
My 30’s generator has a nut.
Se picture.
But how to remove the pulley, nowhere to wrench it (?)

[Newc]

About those '39 std/commercial generators. I HAD an old shop local source for them. Went in to visit, asked about buying them all, and was told I missed by one week, the shop sent 8- 55gal barrels of generators to scrap!! Sold the property and retiring. Apparently there is an aftermarket alternator [12V] available, fan mounted type. Newc

[Tim Ayers]

I did find a NOS military generator (still in the wooden crate) that has the fan mounted pulley that screws on at Hershey for $30. It's a two belt pulley, but that doesn't matter to me.

[ndnchf]

Originally Posted by 3W Hank

I can click on my picture and they large and one could zoom to.

The pulley on my 40’s generator has maybe 1.5 thread out side so no nut was ever there.
My 30’s generator has a nut.
Se picture.
But how to remove the pulley, nowhere to wrench it (?)

To remove pulley, first remove the armature, front bearing plate and pulley as a unit. Then clamp the armature in a padded vice. Remove the small C-clip on the end of the shaft. Then unscrew the pulley, use a strap wrench if it is tight. It is a left hand thread.

[3W Hank]

It was no C-clip in front but I could remove the pulley.
It's cleaned up now in my tank.
I might can modify the older generators pulley that has bots to fan.
If I not will use the std set-up on generator I might not need do this ( I has sevaral solutions ) but my pulley was hurted, so who has the 40's style pulleys ?

[Kurt in NJ]

The 3 brush pulley is a little thin to bore out to the larger shaft size on one side.

[3W Hank]

Yes, that was my idea to look at this, but what pulley did the 40’s generator had on the Chris Unger cool 3W coupe has ? ( se pic )

[alchemy]

Do not bore out the early pulley for use on the later armature (12 volt). Not enough meat there to last. Ask me how I know.

[Kurt in NJ]

I keep looking at the flea markets there are 2 different diameters — the real generator has the ears for the mounting that look the same as the 3 brush generator.
The green book has listings with pictures.Educate yourself and go looking in the 1$ piles

[3W Hank]

I will try find a std pulley to this ca 1942 generator, its said 21 A.

[ndnchf]

I think you are looking for one like this. A few days ago I picked up 30+ generators at auction. This rare bird was among them. It appears to be post-1940 by the two side terminals and B stamp next to the field terminal. I'm working feverishly to get ready for Hershey. I hope to have this one restored in time to display on my table.

[alchemy]

Chief, you are a lucky man. I found a similar pulley on a rather large generator with a 40-esque front mount. I assumed it came from a fire truck or ambulance.