Thanks, Ron!

If I may resurrect an old topic, I have repaired the Driver's side vent window gear-set using the aforementioned Ford/Merc repair kit. I got mine from Mac's but I assume there are several sources.
It is [i]not [/i]a direct replacement although the important part, the gear-tooth form, is the same as that of the Hudson. Chances are that I won't be able to post the several images that took during the process, but the Ford/Merc part has a .035" smaller hub and is "clocked" differently than the Hudson. As a result, the wing window won't quite close fully without modification to the gear. This is presumably the result of a difference between the angle of the window as it relates to the mounting position of the gear box on the two vehicles.
I'll try an image or two and add more if it works.
786, 787) New gear with hub turned down and sleeved back [i]up[/i] to the larger Hudson size.
789) Note the slot angle as compared to the body of the gear box.
790) Angle after modification shown in 788.
There are travel limit stops in the housing so the gear must be milled to allow the output shaft to rotate far enough to close the wing window fully.
The result is a nice running gear-set that should outlast me. The new gear is machined from Aluminum billet (presumably 6061) and certainly won't last as long as bronze but it's what is available. I don't yet know if this gear is applicable to the passenger's side box.
At some time in the distant future, I intend to reproduce left and right hand for the Hudson as a direct interchange. Don't old your breath, though.

I see that I inadvertently omitted a photo. This the output shaft orientation after the gear mod shown in 788.
Frank

Wow! I didn't need to do anything except drill out the original housing rivets and swap the gears. It worked perfectly... still does. It appears in photo 787, that you added a brass bushing to pick up the wide opening in the original housing. I did not need that. The Ford gear fit perfectly.

Interesting......The Hudson hub is .785" dia., whereas the Ford was .750". 'Way too sloppy for me but maybe yours was somehow different. It would be just my luck to get one that was defective. Besides.....I needed another project.
Frank

BTW, which side did you replace?.
F

Ron bought his gear set from Early Ford Store in San Dimas California. Part # is11A-7023402-GR. Frank got his from MAC's so there is a chance the two gears were from different manufacturers?

I replaced the passenger side, but it shouldn't matter. The housing is a mirror image. The gears are exactly the same for either side. I have a extra complete unit for the driver side that still has a good gear. I tried the Ford gear in it and it meshes fine on my bench. I never replaced the driver side since it operates well enough. In addition, the Ford gear is a duplicate of the cast gear that I bought from Eshelman. Maybe your housing opening is larger for some reason. That will cause the gear to "wobble" around and jam up . Weird.

I went into my shop and measured the size of the Ford gear vs the Eshelman gear. Ford was as you said .750" and the Eshelman gear is .765". Many guys in the HET use Eshelmans set. They do fit well, however, due to the casting weakness, the first tooth breaks off just as the vent frame approaches the seal unless the operator remembers to use his/her fingers to "pinch" the vent window closed. I found that the slight slop was of no concern during operation. Of course that difference is intolerable in engine clearances, but not in the vent window gear.

Thanks for the lesson.
F

Correction... Eshelman gear is .765 on the hub not .7565.