Model Boat Mayhem

Technical, Techniques, Hints, and Tips => The "Black Arts!" ( Electrics & Electronics ) => Topic started by: tubby tomo on January 17, 2011, 10:56:57 am

Title: running 4 graupner motors
Post by: tubby tomo on January 17, 2011, 10:56:57 am

    hi Ive asked about running 4 graupner 900 on chit chat but no help i wanted to find out what speed controller to get as the amps would be high i would be the props would be 75mm 5 blade

Title: Re: running 4 graupner motors
Post by: Tug-Kenny RIP on January 17, 2011, 11:13:37 am

Are we talking about Four motors ?

If so then an RSC would be needed for each one, so it's a question of maximum amps per motor, so I would start of with a 20 amp version fused to 15A for a trial.

Regards

Ken

Title: Re: running 4 graupner motors
Post by: tubby tomo on January 17, 2011, 11:18:00 am

      hi ken yes 4 motors  ken im not to bright on electrics what is  RSC

Title: Re: running 4 graupner motors
Post by: Tug-Kenny RIP on January 17, 2011, 11:22:35 am

Is it possible to bench test one motor connected to an ammeter?

Just connect it to a battery direct and squeeze the drive shaft between a cloth and watch the meter.  (carefully watching the fingers eh!!)

You might be surprised as to how little amps you really need.

Ken

ps

I use Mark's 900 motors on 15A esc's

Title: Re: running 4 graupner motors
Post by: tubby tomo on January 17, 2011, 11:25:03 am

        THANKS KEN ILL DO THAT   :-))   PS WHEN YOU SAY MARKS MOTORS WHO ARE WE TALKING ABOUT

Title: Re: running 4 graupner motors
Post by: DickyD on January 17, 2011, 12:07:14 pm

That will be http://marksmodelbits.ieasysite.com/index.html

Title: Re: running 4 graupner motors
Post by: tubby tomo on January 17, 2011, 12:19:16 pm

 



    thanks dicky i have just checked & hes out of stock   thanks mate

Title: Re: running 4 graupner motors
Post by: DickyD on January 17, 2011, 12:27:42 pm

Check out Actions site, Dave sells them.

http://www.action-electronics.co.uk/pdfs/MOTORS03.pdf