1 reply to this topic

[rewinder]

No one can buy one. It can not be bought. They are unobtainable. Not in a lifetime, no way7

An anodized aluminum round core at .150 dia.x.0784 id.

a copper shell id @ .15 id x .215 od
take the 2, the aluminum body and the copper shell, fig a close press fit using 600 degree epoxy

no dovetail.....why???? look AT THE 3 CROSS SECTIONS male and female dovetails

fig .025 height dovetail

on the aluminum round base .0784 id-.150 od= .0348 per side cross section.... not enough height for a good strong dovetail cut per side that is the male mating fit into the female mating fit considering a 2mm shaft
.215-.150= .065 thk now .025= .04 plate thickness for comm per side that is a female dovetail
would this work? metal to metal interlocking dovetails both dovetails annodised remember about .002 to .003 for non conductive anodizing when considering a fit along with the epoxy

Is this the way the chzeck is doing his comm configuration

well there you have it a very close theory of a another way to build comms

as always feel free to chew on it and spit it out gents

[Phil Hackett]

How much money do you want to spend and how many do you want to buy? Those are both related.

 

It's one thing to be knocking these out for one's own usage. It's quite another to produce something like that for production.

 

Like I have posted elsewhere about "solid" comms: it's been done before. It's been documented in books. It's been proven to work. It's expensive to do and I'm afraid with the things the way they are, with the present motor designs and prices, and the fact that Koford has a well developed commutator that holds up well, that something like what you want isn't going to sell well enough to begin production. Especially if the comm maker isn't a motor maker. It would be all a speculation effort and that effort can be much better spent elsewhere.