[sdiy] Tonewheel relics

[ASSI]

On Sunday, October 22, 2017 3:18:44 PM CEST Rutger Vlek wrote:
> The original gears are made of an elastomer that reacts with the oil and
> gets crumbly/dry over the years. This was the reason I could buy it cheap,
> the tone wheel generator wasn't running because of it. I have gone through
> great lengths to create replacements for the gears. Drew them in 3D,
> contacted various suppliers (and had mostly negatives responses on
> "make"-ability of the gears), and finally had them made in china in a rapid
> proto house. The gears are in place now, and the tone wheel generator is
> running, but I don't feel it will last. The tolerances of the replacement
> gears aren't high enough, the don't run smooth enough, and the don't grab
> on to the shaft as well as the originals.

Your best bet at replicating the gear wheels probably is getting them milled 
(requires fairly mundane equipment, but not a lot of shops have it) or cut 
with a wire erosion machine (wire EDM).  They'll probably need polishing to 
run quiet enough, ball burnishing would be a good option as it also provides 
some surface hardening.


Regards,
Achim.
-- 
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

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