Adding a motor control potentiometer to a heater. - Page 2 - UK Vintage Radio Repair and Restoration Discussion Forum

ex seismic · 3rd Mar 2023, 9:22 am

Indeed, the 10 seconds is really odd unless as suggested for heat shrinking something.

locknut · 3rd Mar 2023, 8:12 pm

I can't be the only one reading this tale and shaking his head

Quote:

Originally Posted by teetoon

Reminds me of an old mate of mine who would come up with crazy ideas that you knew wouldn't work but he would say " could we try it ? "

I think we've all encountered someone like that at some point in our careers

Radio Wrangler · 3rd Mar 2023, 8:32 pm

Short of curiosity over what the purpose was, the advice is unanimous on "Don't" (possibly with a few exclamation marks).

If no clues are available, it may be time to close.

David

high_vacuum_house · 4th Mar 2023, 6:14 pm

I certainly wouldn’t want to do that for anyone else for all of the obvious reasons, but also you would never know if it changed hands to someone who didn’t know it was modified and run it in a dangerous state with the possibility of a catastrophic accident.

Christopher Capener

Glowing Bits! · 4th Mar 2023, 10:11 pm

Whilst it may seem dangerous trying to modify the heater by slowing the motor down, it could be done on the condition the plug is removed prior to sending it back to the owner, it then becomes the owner's problem rather than the OP's problem should anything catastrophic take place.
Just a thought anyhows.

kalee20 · 4th Mar 2023, 10:17 pm

That would stop it completely, not just slow it down!

locknut · 5th Mar 2023, 2:53 pm

Quote:

Originally Posted by kalee20

That would stop it completely, not just slow it down!

Probably best all round!

Graham G3ZVT · 5th Mar 2023, 4:00 pm

Further to preventing fan motor stalling.
https://www.youtube.com/watch?v=hQ3GW7lVBWY

Maybe it's less of a problem with our higher mains voltage which usually work as expected.
https://www.amazon.com/Portable-Elec.../dp/B078Z7B8KM

3rd Mar 2023, 9:22 am	#21
ex seismic Heptode Join Date: Sep 2009 Location: Tonbridge, Kent, UK. Posts: 686	Re: Adding a motor control potentiometer to a heater. Indeed, the 10 seconds is really odd unless as suggested for heat shrinking something.

3rd Mar 2023, 8:32 pm	#23
Radio Wrangler Moderator Join Date: Mar 2012 Location: Fife, Scotland, UK. Posts: 22,868	Re: Adding a motor control potentiometer to a heater. Short of curiosity over what the purpose was, the advice is unanimous on "Don't" (possibly with a few exclamation marks). If no clues are available, it may be time to close. David __________________ Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done

4th Mar 2023, 6:14 pm	#24
high_vacuum_house Octode Join Date: May 2003 Location: Belper Derbyshire Posts: 1,935	Re: Adding a motor control potentiometer to a heater. I certainly wouldn’t want to do that for anyone else for all of the obvious reasons, but also you would never know if it changed hands to someone who didn’t know it was modified and run it in a dangerous state with the possibility of a catastrophic accident. Christopher Capener __________________ Interests in the collection and restoration of Tefifon players and 405 line television

4th Mar 2023, 10:11 pm	#25
Glowing Bits! Octode Join Date: Oct 2011 Location: Wrexham, North Wales, UK. Posts: 1,457	Re: Adding a motor control potentiometer to a heater. Whilst it may seem dangerous trying to modify the heater by slowing the motor down, it could be done on the condition the plug is removed prior to sending it back to the owner, it then becomes the owner's problem rather than the OP's problem should anything catastrophic take place. Just a thought anyhows. __________________ Rick, the annoying object roaming the forum.

4th Mar 2023, 10:17 pm	#26
kalee20 Dekatron Join Date: Feb 2007 Location: Lynton, N. Devon, UK. Posts: 7,081	Re: Adding a motor control potentiometer to a heater. That would stop it completely, not just slow it down!

5th Mar 2023, 4:00 pm	#28
Graham G3ZVT Dekatron Join Date: May 2010 Location: Greater Manchester, UK. Posts: 18,713	Re: Adding a motor control potentiometer to a heater. Further to preventing fan motor stalling. https://www.youtube.com/watch?v=hQ3GW7lVBWY Maybe it's less of a problem with our higher mains voltage which usually work as expected. https://www.amazon.com/Portable-Elec.../dp/B078Z7B8KM __________________ -- Graham. G3ZVT