Re: [Boatanchors] Anyone know a source for replacement Hallicrafters FPM-300 bandswitch plastic toothed gear wheel?

[howard holden]

You can also try Winfred M Berg, which specializes in pulleys sprockets 
gears belts etc.

wmberg.com

73, Howie WB2AWQ


On 10/31/2017 2:58 PM, Mike Langner 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/
> K5MGR
> ___
>
>   
>
> Mike Langner
> 929 Alameda Road NW
> Albuquerque, NM 87114-1901
>
>
>
> (505) 898-3212 home/home office
> (505) 238-8810 cell
> mlang...@swcp.com
>
>   
>
> ___
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Re: [Boatanchors] Anyone know a source for replacement Hallicrafters FPM-300 bandswitch plastic toothed gear wheel?

[Wilson Lamb]

Amazon has gobbled up some of the small outfits, like Dan's Small Parts.
Here's some stuff: 
https://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Daps=toothed+belt+pulleys=i%3Aaps%2Ck%3Atoothed+belt+pulleys
WL
- Mike Langner  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/
> K5MGR
> ___
> 
>  
> 
> Mike Langner
> 929 Alameda Road NW
> Albuquerque, NM 87114-1901
> 
> 
> 
> (505) 898-3212 home/home office
> (505) 238-8810 cell
> mlang...@swcp.com
> 
>  
> 
> ___
> Boatanchors mailing list
> Boatanchors@puck.nether.net
> https://puck.nether.net/mailman/listinfo/boatanchors

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Re: [Boatanchors] Anyone know a source for replacement Hallicrafters FPM-300 bandswitch plastic toothed gear wheel?

[Wilson Lamb]

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.
WL

- Mike Langner  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/
> K5MGR
> ___
> 
>  
> 
> Mike Langner
> 929 Alameda Road NW
> Albuquerque, NM 87114-1901
> 
> 
> 
> (505) 898-3212 home/home office
> (505) 238-8810 cell
> mlang...@swcp.com
> 
>  
> 
> ___
> Boatanchors mailing list
> Boatanchors@puck.nether.net
> https://puck.nether.net/mailman/listinfo/boatanchors

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[Boatanchors] Anyone know a source for replacement Hallicrafters FPM-300 bandswitch plastic toothed gear wheel?

[Mike Langner]

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/
K5MGR
___

 

Mike Langner
929 Alameda Road NW
Albuquerque, NM 87114-1901



(505) 898-3212 home/home office
(505) 238-8810 cell
mlang...@swcp.com

 

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