Model Boat Mayhem

Technical, Techniques, Hints, and Tips => DC Motors (Brushed) and Speed Controllers => Topic started by: Gardener on March 25, 2020, 11:54:46 AM

Title: Speed Boat Brushed Motor 7.2v
Post by: Gardener on March 25, 2020, 11:54:46 AM
What could anyone recommend as a brushed motor for a 2ft long speed boat to give it some speed running on 7.2v battery?
Thanks
Dave
Title: Re: Speed Boat Brushed Motor 7.2v
Post by: Martin [Admin] on March 25, 2020, 12:48:38 PM
 
A 'standard' 540 motor should do it:

https://www.mfacomodrills.com/pdfs/RE540-1.pdf
https://www.cornwallmodelboats.co.uk/acatalog/graupner-speed-600-1793.html
https://www.cornwallmodelboats.co.uk/acatalog/Aeronaut-600-Race-Motor-AN7124_21.html#SID=2812

Title: Re: Speed Boat Brushed Motor 7.2v
Post by: Gardener on March 25, 2020, 01:06:42 PM
 :-))
Title: Re: Speed Boat Brushed Motor 7.2v
Post by: malcolmfrary on March 26, 2020, 09:07:22 AM

A 'standard' 540 motor should do it:

https://www.mfacomodrills.com/pdfs/RE540-1.pdf (https://www.mfacomodrills.com/pdfs/RE540-1.pdf)
https://www.cornwallmodelboats.co.uk/acatalog/graupner-speed-600-1793.html (https://www.cornwallmodelboats.co.uk/acatalog/graupner-speed-600-1793.html)
https://www.cornwallmodelboats.co.uk/acatalog/Aeronaut-600-Race-Motor-AN7124_21.html#SID=2812 (https://www.cornwallmodelboats.co.uk/acatalog/Aeronaut-600-Race-Motor-AN7124_21.html#SID=2812)

Sorry, missed the end of the quote.
It needs to be a 540 intended to run on the supplied voltage at or near its rated voltage.  I would think that the 540-1 would give anaemic performance, the aeronaut linked to would be a bit better, but the choice one is the graupner, sadly "unavailable" from Cornwall.
https://howesmodels.co.uk/product/graupner-speed-600-7-2v-motor/?gclid=Cj0KCQjwpfHzBRCiARIsAHHzyZrCB7xinq5YKga2X6uDU7npM8tt25TXnX_u5flGBXjZnyKUHxAqMGkaAnhQEALw_wcB (https://howesmodels.co.uk/product/graupner-speed-600-7-2v-motor/?gclid=Cj0KCQjwpfHzBRCiARIsAHHzyZrCB7xinq5YKga2X6uDU7npM8tt25TXnX_u5flGBXjZnyKUHxAqMGkaAnhQEALw_wcB)  shows the same motor, but in stock.