Model Boat Mayhem

The Shipyard ( Dry Dock ): Builds & Questions => Pleasure boats, Sports, Race, Power and Leisure Boats: => Topic started by: JIM WORNER on October 30, 2016, 08:02:54 pm

Title: REPLACEMENT FOR 700 MOTOR
Post by: JIM WORNER on October 30, 2016, 08:02:54 pm

I have a billings THOR with 2 jet drives and no motors!  (fairly slow)  the recommendation is for 700 brushed.
I would like to use brushless, BUT they will need to have 5mm dia shafts. 
To save hours of fruitless web search, does anyone know of a suitable motor available in the uk?
This seems similar to other questions on Mayhem, but the shaft diameter is the problem.
Thank you for looking
Jim W

Title: Re: REPLACEMENT FOR 700 MOTOR
Post by: TomHugill on October 30, 2016, 10:32:56 pm

http://www.kehrer-modellbau.de/en/accessories/motor-accessories/ (http://www.kehrer-modellbau.de/en/accessories/motor-accessories/)


You will need an adapter ring from here


Brushlesswise, I would use a 1200-1600kv motor around the 1kw range. Hobby King have loads. If your going in runner a 3650-74 will give decent welly. I had a dr mad thrust 3674 on my blue star which is the same jet, I have three in my Moonraker.

Title: Re: REPLACEMENT FOR 700 MOTOR
Post by: martno1fan on January 03, 2017, 06:20:44 am

If you can use outrunners ive heard good things about these motors , im going to try two in my 50" cat on 6 s,they have a 5 mm shaft .

https://hobbyking.com/en_us/rotorstar-brushless-outrunner-helicopter-4249-1600kv-500-size-heli.html (https://hobbyking.com/en_us/rotorstar-brushless-outrunner-helicopter-4249-1600kv-500-size-heli.html)

Title: Re: REPLACEMENT FOR 700 MOTOR
Post by: canabus on January 03, 2017, 12:51:45 pm

Hi Jim
Another Hobbyking motor is the 3648-1450kv , 37mm diameter, 5mm shaft, 3S= 16095 rpm or 4S 21460 rpm, 1600watts.
I have four of these motors and all are good strong motors with a good bit of welly!!!

Canabus