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Attn: Tom Newcity  Rate Topic 
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 Posted: Fri May 11th, 2018 03:35 am
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Russ Huber
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Tom,


What is the lowest blade speed(RPM clocked) on LOW speed you have achieved with the oscillation mechanism disengaged after rewinding the 29646 speed coil? 

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 Posted: Fri May 11th, 2018 08:57 pm
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Tom Newcity
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Russ,

Never did any trials with oscillation disconnected. 

My 29646 trials with rewound choke coil and original blades is usually about 150 rpm drop from the usual 1300 on low.  But with reformed blades AND the rewound choke, the low rpms drop to an average of 1150 rpms.  This has been a comfortable rpm with the increased blade pitch and lower voltage.  Lower rpms have been achieved, but there was difficulty starting and getting up to speed. 

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 Posted: Fri May 11th, 2018 10:53 pm
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Gary Buchanan
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My coil I bought from you on my 29646 works perfectly on start ups.

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 Posted: Fri May 11th, 2018 11:07 pm
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Russ Huber
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Tom Newcity wrote: Russ,

Never did any trials with oscillation disconnected. 

My 29646 trials with rewound choke coil and original blades is usually about 150 rpm drop from the usual 1300 on low.  But with reformed blades AND the rewound choke, the low rpms drop to an average of 1150 rpms.  This has been a comfortable rpm with the increased blade pitch and lower voltage.  Lower rpms have been achieved, but there was difficulty starting and getting up to speed. 

Thanks Tom,  1150 RPM is 6 pole residence fan motor speed on full current.  So your rewound coils on the 29646 models you market make for an ideal desk & bracket fan motor.  On HIGH speed setting your restored 29646 will push serious air at roughly 1550 RPM for optimum cooling breeze as the 4 pole motor is receiving full wall current.  Yet, with your modification on the number of windings on the speed coil your 29646 is ideal for a family room or bedroom with less blade and motor noise running at roughly 1150 RPM.  So Tom's 29646 can deliver the best of 2 worlds at the HIGH & LOW speed settings.  

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 Posted: Fri May 11th, 2018 11:15 pm
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Russ Huber
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Check out the LOW speed setting RPM on a FACTORY GE 4 wing 12" SMY speed coil & 4 pole motor. You got it....the low speed is comparable to 6 pole motor speed on full wall current.  I strobe froze the blade at 1148 RPM on low.  She kicks out roughly 1550 RPM on full wall current.

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 Posted: Sat May 12th, 2018 06:22 am
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Russ Huber
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Better yet, I had a 4 wing 3 speed GE BMY in the pile that clocks out using the strobe roughly at Low- 650 RPM Medium- 850 RPM High- 1120 RPM.  You know what that means don't you?   :wondering:  The fan has a 6 POLE MOTOR driving a 4 wing blade.  No. 640392 profile strut 11 3/8"  pivot.

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Last edited on Sat May 12th, 2018 06:55 am by Russ Huber

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 Posted: Sun May 13th, 2018 08:23 pm
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Russ Huber
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I strobe clocked(RPM) at least six 12" unrestored well lubricated BMYs and each one of them had a 3 speed operating range ideal for all rooms of the home. This being that top end was roughly 1500 RPM, with a bottom end without speed coil modification in the residence(6 pole) motor full speed range of 1150 ...+ or - a tad. 

Last edited on Sun May 13th, 2018 08:26 pm by Russ Huber

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