1952 Panhead Shifter Cam/Drum Differences

[Paps]

What is the correct shifter cam/drum for use on a foot shift 1952 Big Twin Panhead 4 speed ? Is it the #34008-52 or the 34008-52A ? And ? What makes the two part numbers different from each other ?

Thanks, Paps

[T. Cotten]

What is the correct shifter cam/drum for use on a foot shift 1952 Big Twin Panhead 4 speed ? Is it the #34008-52 or the 34008-52A ? And ? What makes the two part numbers different from each other ?

Thanks, Paps

Good question, Pa!

My handshift 65s' had the early drum, for some reason.

(Along with bushed 3rd gears...)

That implies the later drum was designed for foot shifts.

....Cotten

[RCamp]

Not sure, but I know that the early drums used in the foot shift tops were a welded steel stamping and some of the later tops had a drum that was machined from a casting.
Maybe the 34008-52A reffered to the cast one

[Paps]

What shifter application is the 34016-52 shifter drum/cam for then ?

[RCamp]

Paps,
I don't understand Harley's part# system. I have quiet a few of the welded steel stamping type shifter drums and all but one is stamped 34016-52.
This no. doesn't show up in any of my parts books, but I can tell you that they will work in all foot shift Pans.
The cast ones will also work in all foot shifts, except FX models that use a mirrored version of it.

[RCamp]

Paps,
Another example of this would be the one piece kicker arm used on 4 speeds starting in '54.
The kicker arms are stamped 33067-54, but my parts book shows it as a #33068-54, go figure.

[Paps]

Thank you my friend. That helps a whole lot.

[Speeding Big Twin]

My 49–57 H-D catalog lists #34008-52 shifter cam (foot shift) for 52–57 while my 58–68 H-D catalog lists #34008-52A which suggests the later PN appeared sometime after 57. But is that correct? Has anyone got other catalogs to help narrow it down?

Regarding 34016-52, I don’t see it in catalogs because it isn’t a PN. But it’s on some shifter cams as mentioned above and here’s an example. I don’t know however if this cam is #34008-52 or #34008-52A. Did they even use two different markings or were both cams marked 34016-52? I don’t know.







Was the number on a part ever used as the PN? Yes. For example, certain shifting cams were marked 2243-36 and 2243-39 and those numbers were also used as PNs.

Also the letter A (and B, C etc) didn’t always indicate a revised version of a part. For example, #2242-36 used to be the PN for a gear shifter lever and shaft but #2242-36A wasn’t the PN for a revised version of it. Instead #2242-36A was the PN for a gear shifter gear.
Eric