Douglas Model 6 coil winder - UK Vintage Radio Repair and Restoration Discussion Forum

Dennis M · 11th Nov 2023, 10:02 pm

Could not find a gear cover so ended up making one, just need to weld and paint it now.
Slowly finding and modifying any 24 dp gears to fit.

vinrads · 12th Nov 2023, 10:41 am

I am very impressed, would you let us know how you went about it.

Mick.

retailer · 12th Nov 2023, 1:48 pm

The gear cover looks quite good, is it formed/beaten aluminium or a casting, a few pics at different angles would be nice if you could.

Dennis M · 12th Nov 2023, 4:32 pm

It is made out of 3mm ally sheet, once annealed I could do the straight bends by hand over a metal bar and then hammered over the edges.

Once it is welded and cleaned up it should look ok.

Might have gone slightly overboard on the coil winding area though.

Kentode · 12th Nov 2023, 5:10 pm

But that means you've got room for the Jacob's ladder in the corner to complete the Mad Scientist's Laboratory look!

Don't forget that a guard must require a tool to remove it to comply with your insurance.

Oh, and I don't think anyone here has ever said they've got too much space for their hobby...

Station X · 12th Nov 2023, 5:22 pm

Quote:

Originally Posted by Kentode

Don't forget that a guard must require a tool to remove it to comply with your insurance.

Can you quote chapter and verse on that please. What insurance are you referring to? The guards on my manual machine tools are held in place with knurled fixings. The CNC machines have electro-magnetic locks on the guards which prevent them for being opened when the machine is running.

Kentode · 12th Nov 2023, 7:13 pm

Ah, l might have shot myself in the foot there, Graham.

I'm probably mixing it up with the dreaded H&S regs. and Company insurance. Perhaps we should curtail this discussion and let Dennis crack on with his excellent work...

Station X · 12th Nov 2023, 7:48 pm

Agreed

retailer · 12th Nov 2023, 11:31 pm

Looks like you have more than 1 coil winder.

Radio Wrangler · 13th Nov 2023, 1:20 am

I wonder how many people recognised that Octopus....

David

ex 2 Base · 13th Nov 2023, 6:24 pm

The gear cover looks really good. Regarding the gears, you can advertise in Model Engineer magazine FOC for gears or a reader may have some available. Ted

mark_in_manc · 13th Nov 2023, 8:06 pm

Atlas lathes use 24DP change gears, and are reasonably common, if that's any help.

Dennis M · 13th Nov 2023, 9:36 pm

Smart and Brown 1024 gears are also 24 dp.
I can get the gears from HPC gears for a sensible price so will probably order the last six that I need from them soon.

Dennis M · 13th Nov 2023, 9:41 pm

Quote:

Originally Posted by retailer

Looks like you have more than 1 coil winder.

Yes, one basic and two automatic. Nearly got two more recently but would have had to do a 600 mile round trip as the seller would not courier them.

retailer · 13th Nov 2023, 11:48 pm

If you have a 3D printer are not too hung up originality then it is possible to 3D print gears, I've seen it done with lathe screw cutting gears.

Station X · 14th Nov 2023, 12:31 am

This thread may help;-

https://www.vintage-radio.net/forum/...ad.php?t=19001

also

https://www.hpcgears.com/n/products/...spur_gears.php

11th Nov 2023, 10:02 pm	#1
Dennis M Pentode Join Date: Jun 2020 Location: Bude, Cornwall, UK. Posts: 170	Douglas Model 6 coil winder Could not find a gear cover so ended up making one, just need to weld and paint it now. Slowly finding and modifying any 24 dp gears to fit. Attached Thumbnails

12th Nov 2023, 10:41 am	#2
vinrads Dekatron Join Date: Feb 2009 Location: Chesterfield, Derbyshire, UK. Posts: 3,655	Re: Douglas Model 6 coil winder I am very impressed, would you let us know how you went about it. Mick.

12th Nov 2023, 1:48 pm	#3
retailer Heptode Join Date: May 2005 Location: Adelaide, South Australia Posts: 531	Re: Douglas Model 6 coil winder The gear cover looks quite good, is it formed/beaten aluminium or a casting, a few pics at different angles would be nice if you could.

12th Nov 2023, 4:32 pm	#4
Dennis M Pentode Join Date: Jun 2020 Location: Bude, Cornwall, UK. Posts: 170	Re: Douglas Model 6 coil winder It is made out of 3mm ally sheet, once annealed I could do the straight bends by hand over a metal bar and then hammered over the edges. Once it is welded and cleaned up it should look ok. Might have gone slightly overboard on the coil winding area though. Attached Thumbnails

12th Nov 2023, 5:10 pm	#5
Kentode Octode Join Date: Mar 2015 Location: Yorkshire, England. Posts: 1,268	Re: Douglas Model 6 coil winder But that means you've got room for the Jacob's ladder in the corner to complete the Mad Scientist's Laboratory look! Don't forget that a guard must require a tool to remove it to comply with your insurance. Oh, and I don't think anyone here has ever said they've got too much space for their hobby... __________________ Regards, Ken. BVWS member

12th Nov 2023, 7:13 pm	#7
Kentode Octode Join Date: Mar 2015 Location: Yorkshire, England. Posts: 1,268	Re: Douglas Model 6 coil winder Ah, l might have shot myself in the foot there, Graham. I'm probably mixing it up with the dreaded H&S regs. and Company insurance. Perhaps we should curtail this discussion and let Dennis crack on with his excellent work... __________________ Regards, Ken. BVWS member

12th Nov 2023, 7:48 pm	#8
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 20,624	Re: Douglas Model 6 coil winder Agreed __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

12th Nov 2023, 11:31 pm	#9
retailer Heptode Join Date: May 2005 Location: Adelaide, South Australia Posts: 531	Re: Douglas Model 6 coil winder Looks like you have more than 1 coil winder.

13th Nov 2023, 1:20 am	#10
Radio Wrangler Moderator Join Date: Mar 2012 Location: Fife, Scotland, UK. Posts: 22,219	Re: Douglas Model 6 coil winder I wonder how many people recognised that Octopus.... David __________________ Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done

13th Nov 2023, 6:24 pm	#11
ex 2 Base Hexode Join Date: Nov 2009 Location: Scarborough, North Yorkshire, UK. Posts: 487	Re: Douglas Model 6 coil winder The gear cover looks really good. Regarding the gears, you can advertise in Model Engineer magazine FOC for gears or a reader may have some available. Ted

13th Nov 2023, 8:06 pm	#12
mark_in_manc Octode Join Date: Nov 2011 Location: Manchester, UK. Posts: 1,804	Re: Douglas Model 6 coil winder Atlas lathes use 24DP change gears, and are reasonably common, if that's any help. __________________ "The best dBs, come in 3s" - Woody Brown

13th Nov 2023, 9:36 pm	#13
Dennis M Pentode Join Date: Jun 2020 Location: Bude, Cornwall, UK. Posts: 170	Re: Douglas Model 6 coil winder Smart and Brown 1024 gears are also 24 dp. I can get the gears from HPC gears for a sensible price so will probably order the last six that I need from them soon.

13th Nov 2023, 11:48 pm	#15
retailer Heptode Join Date: May 2005 Location: Adelaide, South Australia Posts: 531	Re: Douglas Model 6 coil winder If you have a 3D printer are not too hung up originality then it is possible to 3D print gears, I've seen it done with lathe screw cutting gears.

14th Nov 2023, 12:31 am	#16
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 20,624	Re: Douglas Model 6 coil winder This thread may help;- https://www.vintage-radio.net/forum/...ad.php?t=19001 also https://www.hpcgears.com/n/products/...spur_gears.php __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.