Model Boat Mayhem

Technical, Techniques, Hints, and Tips => DC Motors (Brushed) and Speed Controllers => Topic started by: Stavros on October 15, 2007, 08:58:33 pm

Title: Pitman Motor
Post by: Stavros on October 15, 2007, 08:58:33 pm

Right me harties HELP me has got a pitman motor lying around and I think it would do nicely for my Tid Tug but what ESC shouls I buy and what amperage will it cinsume listed below are the numbers in order as they appear on the motor label

14203D243
127E08850
12VDC
8-29-94


Help on this one would be appreciated cheers
Stavros

Title: Re: Pitman Motor
Post by: Telstar on October 16, 2007, 09:14:58 am

Hi
From Info on Pitman 14000 series motors, the 14--3 motor 12vdc which I THINK may be the type of motor you have:-

design voltage 12Vdc
motor resistance 0.37ohm
Max. stall current  33A
no load rpm @ 12v 3500

This motor is about 2.1in diameter and about 4in long (+shaft), although there was a variant that had an encoder added to one end about an extra inch.
Without being able to check the motor these values are an educated guess. these motors were made as servo drive units, hence the encoder variant. Pitman also made variants on "standard" for some customers.
The easiest thing to check is the resistance, if its about right then the max current will be. The ESC can be decided from there.   Hope this helps

Title: Re: Pitman Motor
Post by: Shipmate60 on October 16, 2007, 08:10:37 pm

Stavros,
If the motor is as stated it might be a tad fast if you fit a scale prop (aprox 63mm, I think), but you dont have to use all the speed.

Bob

Title: Re: Pitman Motor
Post by: Stavros on October 16, 2007, 10:41:03 pm

The motor only seems to run at around 1500rpm very slow,I was thinking, well you know me about, a 3inch prop to turn it into a speedytug!!!!!

Stavros

Title: Re: Pitman Motor
Post by: Shipmate60 on October 16, 2007, 11:19:59 pm

So why not try it, there is plenty of room to let you change the motor if required.

Bob

Title: Re: Pitman Motor
Post by: Subculture on October 17, 2007, 12:44:53 am

I'd have thought one of the Mtroniks controllers should fit the bill.

Something like the Viper 20 would get it done I reckon, although under the stall current, I find Pittman motors are usually very efficient so it probably won't pull anything close to that in your boat.

Andy