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 Posted: Tue Jul 25th, 2017 12:34 pm
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Randy Norberg
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HI can anyone point me to a reasonable repair service? I need a choke coil rewound for 16 in 6 blade R&M model 2426 I bought it in very rough shape motor runs in reverse. Blades are not straight. Can someone help. 

Last edited on Tue Jul 25th, 2017 12:36 pm by Randy Norberg

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 Posted: Wed Jul 26th, 2017 12:39 am
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Lane Shirey
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Do you have a picture of the fan? 

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 Posted: Wed Jul 26th, 2017 11:22 pm
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Randy Norberg
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 Posted: Thu Jul 27th, 2017 12:40 am
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Lane Shirey
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It's possible the headwires are connected incorrectly. That can cause backwards running. I assume it's a 3 wire headwire. 

Last edited on Thu Jul 27th, 2017 12:41 am by Lane Shirey

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 Posted: Thu Jul 27th, 2017 02:34 am
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Randy Norberg
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The fan switch is missing the wire coil needs to be rewound. I dont know how to do that. I rebuilt the cage it was missing a few brass rods. Is there a technique to straighten the blades? I had a few decent fans in the past sold them with regret. Now they're not so cheap and hard to find. I would like to fix these up to keep.  

Last edited on Thu Jul 27th, 2017 02:48 am by Randy Norberg

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 Posted: Thu Jul 27th, 2017 12:16 pm
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Lane Shirey
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Randy, I just posted a tutorial (today) on how to balance blades. It's in the thread with the gentleman that has the Diehl fan. Check it out. I think it'll help. 
Rick Huckabee (member) does a great job at rewinding speed coils. I think there are others, but Rick has done well for me. It is possible to remove the old insulation from the coil, repair the broken wire, and then use friction tape to reinsulate. Often, the wires break off at the very edge of the insulation and doing a little careful digging will reveal the broken stub. Might be worth a try. The magnet wire may have a clear varnish on it, so if you try to solder to it, make sure you remove the varnish from the repair area and then revarnish it after the repair. 

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 Posted: Thu Jul 27th, 2017 04:26 pm
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Randy Norberg
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Thanks so much I'll see if I can find Mr Huckabee and look for your tutorial 

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 Posted: Fri Jul 28th, 2017 04:51 pm
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Randy Norberg
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I want to try and re wind the coil myself. I have some magnetic wire at the shop. I just need to find out the formula for the number of turns and taps also wire gauge.

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 Posted: Sun Jul 30th, 2017 03:39 am
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Randy Norberg
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So playing with 22 magnetic wire I had enough to create 2.1 ohms. Which was enough to start the fan in the right direction at a high speed. Not sure how to tap a section to create slower speeds. Not sure of wire thickness. Or number of turns.

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 Posted: Sun Jul 30th, 2017 11:42 pm
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Randy Norberg
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Reading elsewhere here on the forum. Looks like 26 gauge magnetic wire. Since I only just have the laminations left on the switch. I can only guess the number of turns. The laminate is 22.42mm thick 38.59mm long 11.19mm wide.

I seen someone for an emerson made about 48 turns then 148 turns then 154 turns I wonder if this would put me in the ball park.

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 Posted: Tue Aug 8th, 2017 02:57 am
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Randy Norberg
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Just a little help please before my 3rd try. I know I'm new here and no one knows me. I have a lot of other questions after I get the motor straight like japanning how its done or repainting the emblem. The 26 awg wire is I think wound a little tight around the laminates I tried 48 turns starts good but very fast the motor gets a little warm. From beginning wire I measure 2.4 ohms med speed I did another 148 turns not much different than high speed except the motor won't start on its own 3.8 ohms.The slow speed another 154 turns 4.4 ohms kind of a med to slow.
Should I increase the number of turns? And should the motor start on all speeds?

Thanks Randy Norberg
 

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 Posted: Tue Aug 8th, 2017 03:07 am
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Lucas Beshara
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Man you are weeding through it!  Nice work!
The r&m's like yours run fast, faster, and fastest.  I have a 2104 6 winger and I think the coil wire is much smaller than 26. Like 28 or 30. Either way it should start on all speeds. Here is a common diagram...




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 Posted: Tue Aug 8th, 2017 11:00 am
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Randy Norberg
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Thanks, I wonder if anyone with a similar fan could measure the resistance I think that would tell me if I'm close?

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 Posted: Tue Aug 8th, 2017 01:18 pm
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Randy Norberg
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Ooops I wired the switch off hi med low. Swapped hi and low now the fan starts at all speeds. I feel the coil needs more turns. Its so fast on hi the fan was walking off the table and med is a notable difference the hi but not much. You would think going from 48 turns on hi to a 148 turns on med there would be a big difference. This weekend I'll try maybe 60 turns then a 170 turns then 175 turns maybe that will slow it down?

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 Posted: Tue Aug 8th, 2017 02:21 pm
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Henry Carrera
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Randy Norberg wrote: Ooops I wired the switch off hi med low. Swapped hi and low now the fan starts at all speeds. I feel the coil needs more turns. Its so fast on hi the fan was walking off the table and med is a notable difference the hi but not much. You would think going from 48 turns on hi to a 148 turns on med there would be a big difference. This weekend I'll try maybe 60 turns then a 170 turns then 175 turns maybe that will slow it down?

I'm not familiar with that fan but the run winding normally bypasses the speed coil on high speed and is connected directly to the line input.

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 Posted: Thu Aug 10th, 2017 03:35 am
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Randy Norberg
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Tried again made another coil a little bigger with a few more turns. The third try looked better and bigger difference in speeds. Except the coil became too hot to touch. Too much resistance I guess. Wish someone could tell me how many turns

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 Posted: Fri Aug 11th, 2017 03:26 am
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Randy Norberg
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Experimenting I went with 50 turns then 150 turns and 155 turns. I used spray varnish. This seems to work well. I made a mold of wood approx size of laminate covered with thin cardboard and hand wound with 26 awg wire. Hope this helps anyone looking to make this kind a repair.  








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 Posted: Mon Aug 14th, 2017 03:08 pm
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Randy Norberg
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Decided to rewind the motor also. I spoke to a local motor repair shop. He has agreed to sell me the wire and give some. Winding is grounding sparking somewhere looks ratty. I would like some tips from this forum before I go there. Wire gauge, how many loop/turns anything can help.

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