stunthanger.com

Electric Stunt => Gettin all AMP'ed up! => Topic started by: Horby on October 23, 2016, 11:10:52 AM

Title: Hobby King G25 motors
Post by: Horby on October 23, 2016, 11:10:52 AM

Hi all, Just thought I would share this with everyone.
If you are using a KR timer the Hobby King G25 motors will not work. Turns out there isn't enough poles for the timer to function properly. I tried both KV motors and got the same result. Just a heads up all.

Warren

Title: Re: Hobby King G25 motors
Post by: John Rist on October 23, 2016, 07:50:20 PM

Quote from: Horby on October 23, 2016, 11:10:52 AM

Hi all, Just thought I would share this with everyone.
If you are using a KR timer the Hobby King G25 motors will not work. Turns out there isn't enough poles for the timer to function properly. I tried both KV motors and got the same result. Just a heads up all.

Warren

What are the symptoms?  Have you tried a servo tester in place of the KR timer to see if it is the speed controller not the timer that the G25 doesn't like?

Hobby king sells many different types and they are cheep.  Every electric flight bag should have one.

http://www.hobbyking.com/hobbyking/store/__18309__Hobbyking_LED_Servo_Tester.html

The neat thing is that if you are testing a speed controller the speed controller supplies the power for the tester. For testing servos you need an external power source.

Title: Re: Hobby King G25 motors
Post by: Horby on October 23, 2016, 08:26:07 PM

The problem is the number of poles the motor has, any thing less than 10 the KR timer will not work properly. Found this out after corresponding with Keith.


Warren

Title: Re: Hobby King G25 motors
Post by: John Rist on October 24, 2016, 08:18:58 AM

Thanks for the heads up.  I looked at the HobbyKing web sight and unfortunately they do not list the number of poles.   Looking at several of their motors I don't see any data on number of poles.  n1  In the moderately priced motors I have had good luck with Cobra motors.

Title: Re: Hobby King G25 motors
Post by: Crist Rigotti on October 24, 2016, 09:03:00 AM

Stick with the Cobra's.

Title: Re: Hobby King G25 motors
Post by: Carl Cisneros on October 24, 2016, 10:40:47 PM

Horby

these are the 2 motors that I have been using this past season.

Both of them work very nicely with the KR and the Hubin timers.

I rum them both on 4S packs.

Carl

http://www.hobbypartz.com/96m603-bigfoot25-2826-870kv.html

http://www.hobbypartz.com/96m604-bigfoot32-3520-770kv.html

Title: Re: Hobby King G25 motors
Post by: Horby on October 26, 2016, 08:08:15 PM

I have used the G15 with no issues, Humm,  I wonder if different production runs have different poles. I worked out the motor issue with Keith....... you need more than 10 poles to work with the KR, any thing less is not consistent and rpm is hard to set. Can you measure the poles on your G25?

Warren

Title: Re: Hobby King G25 motors
Post by: Larry Renger on November 04, 2016, 07:30:55 PM

Maybe look in the front of the motor and count them? Not rocket brain surgery, after all.