Cookies used in this website are gluten free, wheat free and dairy free. By using this website you agree to our use of cookies. More Info
Login Below
Join Us On Social Media!
Get The Model Boats App!
Apple App Store
Android app on Google Play

Help Support This Website
or enter custom amount

(Non Contributor)

Help support this free
website and donate.

£285 a year is needed to keep the website and apps online. Please consider donating £5 or more to help towards these fees.
All donations are securely managed through PayPal. Amounts donated are not published online.

Many thanks for your kind support.

Model Boats Website Team

Donation History
February 2019: 8 people
January 2019: 16 people
December 2018: 6 people
November 2018: 11 people
October 2018: 9 people
September 2018: 13 people
August 2018: 5 people
July 2018: 8 people
June 2018: 8 people
May 2018: 7 people
April 2018: 9 people

Unique Visitors This Month

Website Members

Terms and Conditions
Privacy Policy

Model Boats Website
Active Users (6)
Login or Register
To Remove This Ad

Login or Register
To Remove This Ad
>> Home > Forum > Electrical Related > Brushless Equivalents
Brushless Equivalents
Author Message

Forum Posts: 59
24th May 2018 12:40  
>> Permalink

Possibly the wrong title - but.

Has anyone produced a conversion chart:

Non-Brushless motor types to Brushless (for different manufacturers)

Glow / Diesel motors to Brushless

If not.

Does not need to be exact, but I am sure that there a many out there that have replaced or know what was originally intended to be fitted is a particular boat, and have replaced it with a brushless.

If enough people contribute - I will create a table.

(Fleet Admiral!)

Forum Posts: 133
24th May 2018 13:33  
>> Permalink

Hi Andy
I work on the motor case around the same size as the prop diameter, the rpm and power of the old motor.
Add a few more rpm as we like to go faster.
Matching the revs from the old motor e.g. 20,000.
Kv of the brushless motor times the Lipo Battery cell number(4S= 14.8 volts) e.g. 1450kv times 14.8= 21460 rpm.
So an OS40FSR was 1.6HP @ 20,000.
Replacement 3648-1450kv = 21460rpm(no load).
Power 750 watts = 1HP and the 3648-1450kv is 1600watts.

As for brushless to brush motors you can match the rpm, but, the brushless are far more powerful than the brush motors.

As for a conversion chart it would be a big task and some of the gear is not available in all countries.


(Fleet Admiral!)

Forum Posts: 508
25th May 2018 09:12  
>> Permalink

IC to electric conversion table

IC to brushless ( for aircraft but its better than nothing)

Hope its some help

"that's not a bug its just an undocumented creature."

Sir Terence David John "Terry" Pratchett, OBE (28 April 1948 - 12 March 2015)