[Boatanchors] Anyone know a source for replacement Hallicrafters FPM-300 bandswitch plastic toothed gear wheel?
infomet at embarqmail.com
Tue Oct 31 20:20:43 EDT 2017
Biedler's Belts is incredible for belts and they have pulleys. You don't need exact replacements, if you have the ratio right. http://www.biedlers-belts.com/
For the hole, make a couple of shims to fill out the shaft. If the setscrew isn't enough hold, make a dimple for it.
----- Mike Langner <mlangner at swcp.com> wrote:
> Hello everyone !
> I’m trying to bring an FPM-300 back to life.
> Thanks to Greg Trook I have a correct replacement toothed belt for the
> bandswitch shafts that must turn together, but the transceiver I got from
> EBay some years back is missing one of the little nylon or plastic toothed
> gear wheels – the unit, of course, needs two of them – one on each of the
> two shafts that must turn together.
> Might anyone know where I could obtain another one?
> Nothing I’ve found (yet) at McMaster Carr comes close --
> If none are available, I’ll look for someone with a 3D printer and see what
> it would cost to duplicate this one.
> It’s not clear to me that a 3D scanner and printer could/would duplicate
> both the outer features (flanges and teeth) and also duplicate the unusual
> almost-oval hole for the shaft. In order to make the little toothed belt
> gear wheel not slip on the control shaft, the control shafts are ¼ inch with
> two opposing flat sides, so drilling a round hold won’t work.
> Many thanks in advance for any guidance you can offer !
> Mike Langner
> 929 Alameda Road NW
> Albuquerque, NM 87114-1901
> (505) 898-3212 home/home office
> (505) 238-8810 cell
> mlangner at swcp.com
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