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Fungal Harmony - Posted - 08/28/2024: 14:47:30
Hi all, me and my dad are gonna start building a banjo, and we plan on putting a Dobson in it. Problem is, I have very little clue what I’m doing. This is going to be a sort of “figure it out as we go” type deal, but I’d rather not do that with a couple of the more expensive parts. So how do I actually install a Dobson? Because I’d think if it is just on the head, it’d fall wouldn’t it?
RDP - Posted - 08/28/2024: 16:12:32
It has turned outside rim lip that the tonering flange sit in and then goes over the rim.
Fungal Harmony - Posted - 08/28/2024: 16:19:26
quote:
Originally posted by RDP
It has turned outside rim lip that the tonering flange sit in and then goes over the rim.
Oh, I always thought that open backs didn't have a flange. Thank you!
jdeluke137 - Posted - 08/28/2024: 16:26:02
I don’t have this book, although I’ve thought about buying it. And I don’t know if it covers open backs. Someone else will know. But it might be very helpful either way . I applaud you willingness to tackle this project and kudos to your Dad for helping.
Here’s a link to the book:
amazon.com/How-Set-Best-Soundi...mp;sr=8-1
Edited by - jdeluke137 on 08/28/2024 16:27:14
Banjercat - Posted - 08/28/2024: 17:18:18
I've put Dobson tone rings on an Enoch Tradesman. It just sets on top of the rim, the main thing is the outside diameter of the rim needs to accommodate the inside diameter of the tone ring pretty closely, and the rim itself can't be very thick, .
Culloden - Posted - 08/28/2024: 21:30:51
quote:
Originally posted by Fungal Harmony
quote:
Originally posted by RDP
It has turned outside rim lip that the tonering flange sit in and then goes over the rim.
Oh, I always thought that open backs didn't have a flange. Thank you!
Open-back banjos don't have a flange around the rim like most resonator banjos do but the tone ring has a sleeve (flange) that goes around the top edge of the rim. The rim needs to be turned down to allow the sleeve to fit.
AndrewD - Posted - 08/29/2024: 04:43:52
And to complicate matters. The Dobson style rims on Slingerland Maybells are mounted on top of metal studs that are driven into the top surface of the ring. These are quite thick rims - about 5/8" - so maybe this is to give the tone ring free clearance that wouldn't be needed on a thin rim. Somebody posted a picture of a disassembled Maybell pot here a few years ago showing this.
