Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length.

[ivorthediver]

I was recently given two Buhler Dc motors but I have been unable to find out anything about these motors or their compatibility to my existing gear .


They are 35.5 mm wide and 56mm long with an integral mounting plate and easy access to their carbon brushes , and have the motor supply leads fitted to the side of the motor case [ unlike the traditional style with the normal end tabs]  and attached supply leads .


The only other I D is stamped in the end plate [ opposite end to brushes ] and reads 02 8 05 and the companies Pine Tree logo

The driveshaft is 4mm at the mounting plate end and 4.5 at the brush end


They appear brand new , and in excellent condition , but a mystery  ........can any of you help me please , as I can certainly make good use of them once I find out if there are any limitations in their usage


Be very grateful for any advice you can offer me please , and if I could crack the photo issue I would post one for you to assist

[nemesis]

Hi, Cannot say anything about those ones but our club has used buhler motors for years and had no bother at all. In fact I think we cleared the stock from the suppliers. Ours were about 4 inches long and about 1 1/2 dia. Never seen them since which is a shame. nemesis

[derekwarner]

ivor.....


My landline e-mail address in my Profile [to the left] .....if you wish, send an e-mail with a few larger images of the Buhler motors  to me & I'll resize and post it in your thread here on MBM


Derek

[Jonty]

  Nothing quite like that here:https://www.buehlermotor.com/products-and-markets/industrial/industrial-products/motors.html Perhaps one-off/old stock/surplus or whatever.

[mudway]

Buhlers usually had their details on the side of them like the attached.

[roycv]

These motors are of the best quality.  If you have a meter handy then there is a rule of thumb for mystery motors.  Fresh set of batteries and a pair of pliers needed.
 
Hold the shaft stationary with the pliers and connect the motor with the meter on max amps in series.  The meter should be able to read at least 20 amps to do this!
Take a quick flash reading of this current and let the motor run for a bit to cool down  This is the stall current and most well made motors will run at maximum efficiency at 20% of this value.  So if you get a 10 amp reading then a good running current is 2 amps on load.

If the stall current reading is just 1 or 2 amps then this motor has been wound to run at a much higher voltage.  It may be best to try the above with a lower voltage to start with.
I have rescued Pittman motors and found several excellent ones that run forever on 12 volts whereas several others were later found to be wound for 50 volts so not much use in model boats.
You should be able to take a current reading in no more than a second so no damage will be done.  There is a slight detrimental affect on the permanent magnet but for just a second it is of little consequence.
Good luck
Roy

[barriew]

This is Ivor's motor.


Barrie

[mudway]

Looks a bit like one of the Buhlers that Alastair at MMD used to sell.

[rob]

I've got one of those in my Mountfleet Highlander, does the job well

[ivorthediver]

High Rob , what can you tell me about them please ?


12 or 24v ?


What batteries are they powered by ?


 Run as singles or doubles ?


How are they suppressed as there is no visible means of fitting them that is obvious .....


Sorry to bombard you but all I have is the motor's and nothing to reference them with 


Regards Ivor .

[KitS]

Looks a bit like one of the Buhlers that Alastair at MMD used to sell.

Yes, I agree. I have a couple of them, but sadly they're 120 miles away from me right now and I can't check them for details. 

[Liverbudgie2]

I've run these motors in models for many years and they are by far the best for most of our purposes. The smaller ones such as the one illustrated run on 12 volts and will turn a heavy 2 inch prop all day long without draining the battery; some of the larger motors will run on 24 volts but the power output at that rating will far to much for most models.
I have yet to supress one.
When you say doubles I presume that you mean as in a twin screw model, in which case they will be quite content, though the total power output might be on the high side, in which case you can reduce the voltage down to 6 volts per motor without any problem.


LB

[rob]

High Rob , what can you tell me about them please ?


12 or 24v ?


What batteries are they powered by ?


 Run as singles or doubles ?


How are they suppressed as there is no visible means of fitting them that is obvious .....


Sorry to bombard you but all I have is the motor's and nothing to reference them with 


Regards Ivor .


Currently on 12v/7ah battery turning a 2 inch prop. No suppression.