Prop Motor Test Three

EBay.com Synchronous Motor

  

 

http://www.ebay.com/itm/260825295117?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

Try searching on ebay.com for "synchronous motor 110"  This will get you a number of similar motors at various RPMs

Specs:

Dimensions:5cmX5cmX2cm
Shaft Diameter: 7m
Shaft Length: 15mm
Working Voltage: AC 100-127V
Frequency: ~50/60Hz
Power: 4W
Speed: 8R/MIN
CCW/CW

Weight: 0.9kgs

 

Price for one - $4.80 Shipping for 1 - $3.60
Price for ten - $4.80 each Shipping for 10 - $35.10

PROS -
Quiet
Inexpensive
Designed for continuous use

Electrical connection is very easy to get to.   Wire nuts will make the connections easy.
It is fairly easy to adapt an arm to the shaft arrangement.

Mounting is easy using the two exposed mounting tabs.

CONS -
Shipping for a single unit is relatively expensive.

Medium to low torque - This motor did not have enough torque to spin the 8oz test weight on a 6 inch arm. At max load (almost half way toward vertical) the motor reversed direction.

Modifications -
The output shaft is a smooth shaft with a perpendicular hole in it. I used the hollow threaded rod sold in the lamp department of home improvement store and drill a hole through the all-thread to match the hole in the output shaft.  I filled the hollow center of the threaded rod with hot melt glue and press the rod over the shaft.   I added a cotter pin through the holes.  The rod arm is secured between two nuts purcahsed in the lamp department.  Five dollars will buy you enough parts to modify 4 motors.

Comments - This motor functions like a stripped down reindeer motor.   My method of adding to the output shaft may cause problems in applications where the shaf and the rod must be totally co-linear.  This motor looks like a perfect candidate for a simple haunted Ouiji board.