Model Boat Mayhem

Please login or register.

Login with username, password and session length.
Pages: [1]   Go Down

Author Topic: Brushless motors  (Read 1429 times)

destroyer42

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 332
  • Model Boat Mayhem Forum is the Best!
  • Location: Southend-on-Sea Essex U.K
Brushless motors
« on: April 22, 2020, 07:06:43 pm »
Hi All,
Hope someone can help?, I'm thinking of converting my Model Slipway Range Safety Launch to brushless set up, as I have limited knowledge of brushless motors I'm hoping that the experts on the forum can give me some guidance/recommendations. The model is a fast patrol launch 40ins x10ins, currently running on 12v 555 motors with 40mm 2bladed plastic props.
I want to upgrade to brass props 4bladed 40mm, brushless motors and Lipo's either 3 or 4s.
Ay suggestions or ideas?
Destroyer42
Logged

HMS Invisible

  • MICROGYROS.COM
  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 517
  • Location: Paisley, Renfrewshire
    • Yes, it works!
Re: Brushless motors
« Reply #1 on: April 22, 2020, 09:56:14 pm »
Quote from: destroyer42 on April 22, 2020, 07:06:43 pm
...
Ay suggestions or ideas?
...
I think you can direct drive the 4 bladed 40mm brass props with 555 motors or try 4s Lipo.

Logged
< All manner of contact methods over to the left.

canabus

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 1,347
  • Boats a hole in the water you pour money into!!!
  • Location: Tasmania,Australia
Re: Brushless motors
« Reply #2 on: April 23, 2020, 07:49:59 am »
Hi Destroyer42
The Raboesch 4 blade D Type 40mm Prop max RPM is 8800(code 174-05 right/ 174-06 left).
So divide 11.1 (3S) into 8800 about 800kv or 14.8 (4S) is about 600kv.
Generally prop diameter equals motor diameter, but with that number of blades I would go to 50mm brushless motor

Canabus
Logged

destroyer42

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 332
  • Model Boat Mayhem Forum is the Best!
  • Location: Southend-on-Sea Essex U.K
Re: Brushless motors
« Reply #3 on: April 23, 2020, 04:56:14 pm »
Hi Canabus,
Many thanks for the info I'll have a look to see if Hobby king has what been suggested.
Thanks .
Destroyer42
Logged

Shipmate60

  • Global Moderator
  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 5,806
  • You bark - I will bite!!!
  • Location: Fareham
Re: Brushless motors
« Reply #4 on: April 23, 2020, 05:35:13 pm »
These hulls were semi-displacement with a fullo speed of almost 20 knots.
Not exastly a speedboat more a fast cruiser.
The 1 I built went well on 555 motors.
Pity I sold it to Beale Park.


Bob
Logged
Officially a GOG.
Pages: [1]   Go Up
« previous next »
 

Page created in 0.094 seconds with 22 queries.