Model Boat Mayhem - Forum

Technical, Techniques, Hints, and Tips => The "Black Arts!" ( Electrics & Electronics ) => Topic started by: Klunk on July 29, 2011, 11:12:46 AM

Title: wanted 540 size motor special
Post by: Klunk on July 29, 2011, 11:12:46 AM
I require a 6v 540 size motor reving at 15000rpm, with as low an ampage pull as possible. Have looked on various websites, but most dont give the load/ no load ampage,
Title: Re: wanted 540 size motor special
Post by: Martin [Admin] on July 29, 2011, 12:15:28 PM
This post may be of some help:

http://www.modelboatmayhem.co.uk/forum/index.php?topic=31120.msg307583#msg307583
Title: Re: wanted 540 size motor special
Post by: DickyD on July 29, 2011, 12:41:53 PM
Mabuchi RS540
Mabuchi RS540. At 6 volts, ideal for direct drive with 2 bladed prop sizes up to 35mm.
Voltage range: 6-8.4V
RPM unloaded: 16,000
Current @ max. efficiency: 7A
Weight: 190g
Shaft diameter: 3.2mm, Motor diameter: 36mm
Part No: P5510399

http://www.cornwallmodelboats.co.uk/acatalog/standard_motors.html
Title: Re: wanted 540 size motor special
Post by: DickyD on July 29, 2011, 12:45:44 PM


http://www.cornwallmodelboats.co.uk/acatalog/graupner_motors.html
Title: Re: wanted 540 size motor special
Post by: nick_75au on August 03, 2011, 06:35:14 AM
I require a 6v 540 size motor reving at 15000rpm, with as low an ampage pull as possible. Have looked on various websites, but most dont give the load/ no load ampage,


They wont give the load amps, because it depends on the load, current at maximum efficiency is a load that reduces RPM to about 75% of unloaded RPM.
RPM follows voltage so a 12 volt motor that does 30000 RPM will do 15000 RPM at 6 volts etc.

Nick