Generator and Fan

[qmdv]

I have a generator and fan assembly that I do not know what it is off off. I think it a good idea to identify it before I put it up for sale. The pully is 3 3/4 inch diameter. All the others I have are just over 4 1/4. Could it be off of a 60HP engine?

Oh the fan is like most others I have

[ndnchf]

There are many different generators, pulleys and fans. Please post a few clear photos of it. I can probably tell you more with photos.

[19Fordy]

Yup, please post plenty of photos of your fan assembly.

[qmdv]

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I assumed that a V8-60 had a smaller crank pully. And that they would have a smaller fan/ generator pully to achieve the same fan speed

[ndnchf]

Yes, V8 60 has a smaller crank and generator pulley. I looked through my spare pulleys and found one V8 60 pulley. They are hard to find and identify. There are two, maybe three different V8 60 pulleys.

[petehoovie]

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Originally Posted by qmdv

I assumed that a V8-60 had a smaller crank pully. And that they would have a smaller fan/ generator pully to achieve the same fan speed

[Terry,OH]

Appears like the 33-35 Generator. If you clean the body you will find a date code. The pulley usually has a part number as well as the front mounting embossed into the metal.

[DavidG]

Mke that '34-'36 as an original '33 V8 generator does not have a vented front bracket.

[Kube]

Originally Posted by ndnchf

Yes, V8 60 has a smaller crank and generator pulley. I looked through my spare pulleys and found one V8 60 pulley. They are hard to find and identify. There are two, maybe three different V8 60 pulleys.

Why would a 60HP have a smaller pulley than the 85HP? Both have identical 6v electrical systems and both need to charge at the same rate.
In 1940 there were two different pulleys. The first (early) design was larger in diameter than the later design.
That had nothing to do with 60 or 85 applications.

[ndnchf]

Originally Posted by Kube

Why would a 60HP have a smaller pulley than the 85HP? Both have identical 6v electrical systems and both need to charge at the same rate.
In 1940 there were two different pulleys. The first (early) design was larger in diameter than the later design.
That had nothing to do with 60 or 85 applications.

I don't know, I'm not an engineer

There were a lot of different pulleys available over the years. A mid - late 1930s car with big V8 typically used a pulley .408" to .438 diameter. The V8 60 used a 3.68" diameter pulley in '37. In '38-'39 it could be either 3.71" or 3.40" diameter pulley. In 1940, the 01A-1000-B V8 60 generator used either a 3.12" or 3.18" diameter pulley.

On the left is a 1937 V8 60 pulley, 3.68" diameter. PN BB-10130-B. On the right is a big V8 pulley 4.38" diameter. PN 68-10130-C.

[Kube]

Originally Posted by ndnchf

I don't know, I'm not an engineer

There were a lot of different pulleys available over the years. A mid - late 1930s car with big V8 typically used a pulley .408" to .438 diameter. The V8 60 used a 3.68" diameter pulley in '37. In '38-'39 it could be either 3.71" or 3.40" diameter pulley. In 1940, the 01A-1000-B V8 60 generator used either a 3.12" or 3.18" diameter pulley.

On the left is a 1937 V8 60 pulley, 3.68" diameter. PN BB-10130-B. On the right is a big V8 pulley 4.38" diameter. PN 68-10130-C.

I'm guessing you are getting your information from a Ford parts book. Am I correct?
If you are, you must keep in mind, the parts listed are for service and in many cases Ford "made do" with what worked.
In 1940, there were two pulleys regardless of vehicle application. The first design was 3 11/16" diameter. The later design was 3 3/16" diameter.
I'm not certain where you got 3.12 and 3.18. Do you really think Ford made two pulleys that were a mere .060" different from each other?

[ndnchf]

It does seem odd, but I'm reading this out of the Ford geen book. Just reporting what I read.

[petehoovie]

Originally Posted by ndnchf

I don't know, I'm not an engineer

There were a lot of different pulleys available over the years. A mid - late 1930s car with big V8 typically used a pulley .408" to .438 diameter. The V8 60 used a 3.68" diameter pulley in '37. In '38-'39 it could be either 3.71" or 3.40" diameter pulley. In 1940, the 01A-1000-B V8 60 generator used either a 3.12" or 3.18" diameter pulley.

On the left is a 1937 V8 60 pulley, 3.68" diameter. PN BB-10130-B. On the right is a big V8 pulley 4.38" diameter. PN 68-10130-C.

[Kube]

Originally Posted by ndnchf

It does seem odd, but I'm reading this out of the Ford geen book. Just reporting what I read.

I kinda thought that's where you were getting your information.

[Terry,OH]

The BB- pulley is smaller because big trucks usually do not operate at high RPM the smaller pulley will increase generator output at lower RPM keeping the battery charged.

[Ol' Ron]

Never use a generator or mechanical fam. Always use an Alternator and electric fan Last forever, works great.
Gramps

[Tim Ayers]

Originally Posted by Ol' Ron

Never use a generator or mechanical fam. Always use an Alternator and electric fan Last forever, works great.
Gramps

I guess and I get it, but they seem to look out of place in my opinion.

[qmdv]

Originally Posted by Ol' Ron

Never use a generator or mechanical fam. Always use an Alternator and electric fan Last forever, works great.
Gramps

Who makes a decent looking electric fan for a 32 roadster

[Ol' Ron]

Generally speaking, I wasn't talking a hotrods, where esthetics are more important.
Gramps

[Terry,OH]

Many generators found recently are an amalgam of pieces from various years so it can become impossible to identify from appearance especially covered in dirt. The 33 does not have vent holes in the front mounting bracket and the 36 armature does not have a 5/16" threaded attachment for the pulley