Hancock 4700 Air Whistle in Fn3?

[JRad (Jon Radder)]

I’d like to change the whistle sound on my GE 45 Ton diesels to a Hancock 4700 Air Whistle. The sound part is easy, but the stock single bell air horn wouldn’t look right with the Hancock sound.

If I had some bits that would work, I’m not opposed to scratching one up myself, but if there is a 3D print file out there I’d prefer to go that route since I’m lazy! I did try and find prints with Google with little luck.

If you are not familiar with the 4700, this Youtube video will be my source to create a set of RailPro sound files from…

Hancock 4700

Any suggestions of what bits I might use to fabricate the bell from, or a source of a 3D print file would be appreciated.

[David_Marconi_FOGCH (David Marconi CHHNNG)]

Looks like you could start with the cap from a plastic tube like:

angle cut the cap and add your tube center

Now if you could just put the speaker in the round rod facing the rectangular bell you,d have a great piece.

[RGSNH (Al Pomeroy)]

This will be a simple 3d drawing, just need measurements and i can do. see my PM

AL P.

[JRad (Jon Radder)]

Good suggestion Hollywood. I need to look for something like that!

[RGSNH (Al Pomeroy)]

Purely swag for now. i know there is a mounting flange.
like i said simple to model.

Al P.

[manimal (Dan Gilchrist)]

Just so happens there was a guy at the RHS that had printed that. Unfortunately, I don’t remember who but I remember commenting on the phallic resemblance. Someone else was there at the time. @John_Wilda was it you? Do you remember who this was?

[JRad (Jon Radder)]

Here is the back in good detail…

Still working on dimensions.

[JRad (Jon Radder)]

The patent drawing…

[John_Wilda]

Yeah, wasn’t that the guy who said he knew you? I still can’t remember his name. That was our conversation on Saturday. Nice guy.