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
Guest
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
January 2019: 13 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: 20 people


Unique Visitors This Month

Website Members

Terms and Conditions
Privacy Policy
Advertising
Contact


Model Boats Website
Active Users (38)
Login or Register
To Remove This Ad

Login or Register
To Remove This Ad
>> Home > Forum > Electrical Related > Brushless motor(s)
Brushless motor(s)
(777 views)
Author Message
Little-Charlie
(Sub-Lieutenant)





Forum Posts: 17
27th Oct 2018 10:40  
>> Permalink
mdlbt.com/47489

Hi, I have recently purchased a Precedent KD Perkasa kit 37" and would like to power it with a brushless motor, but being an Old F**t I know nothing at all about Brushless Motors or their relevant speed controllers or battery power. So I would like your input on what exactly I need, obviously I would like the model to have a fair turn of speed. Thanking you in anticipation of your much needed assistance. Little Charlie

RHBaker
(Fleet Admiral!)





Forum Posts: 119
27th Oct 2018 19:20  
>> Permalink
mdlbt.com/47500

Charlie. Have recently been through this challenge with my 37” Brave Borderer. My blog on this site may not give all the answers, but it might save you making the mistakes I did
Rowen

Little-Charlie
(Sub-Lieutenant)





Forum Posts: 17
28th Oct 2018 09:18  
>> Permalink
mdlbt.com/47512

Thank you Rowan it has been very useful, will eventually post how I get on, not as simple as one thinks, never mind onwards and upwards as they say................once again thank you for your response
Little Charlie

Little-Charlie
(Sub-Lieutenant)





Forum Posts: 17
28th Oct 2018 17:22  
>> Permalink
mdlbt.com/47523

Thanks Rowan for your second message I do appreciate the offer and I am sure you will be hearing from me in the future
Regards
Little Charlie

canabus
(Fleet Admiral!)





Forum Posts: 132
27th Dec 2018 09:30  
>> Permalink
mdlbt.com/49147

Hi Charlie
I have tested my 37" Perkasa with a brushless 3639-1100kv motor from Hobbyking, a 60A ESC, 3S 5800MAH Lipo battery and 37mm 3 blade CNC prop.
It's dam fast !!!!
https://www.youtube.com/watch?v=9fddqnbnlrQ
Canabus

Joe727
(Captain)





Forum Posts: 33
27th Dec 2018 20:30  
>> Permalink
mdlbt.com/49156

Charlie,
Good question.

I have a number of brushless motors and esc' from my model airplane days..... I model slow boats like tugs and just assumed that they would be too fast for these boats, but I don't know if this is true or not....

Maybe someone out there knows?

Joe

RHBaker
(Fleet Admiral!)





Forum Posts: 119
27th Dec 2018 21:32  
>> Permalink
mdlbt.com/49163

Well Canabus, certainly fast! Very envious of seeing open water too.
If was not obsessed with building to scale, looks like your power train combination would be ideal.
Once the water is Canada regains liquid form will be returning to my Brave B. Am confident it will now be much better, although potentially still overpowered.
Have various methods available for controlling the performance in mind now. However, if nothing really works could, with some minor modifications fit a powertrain rather like yours.
More food for though!

canabus
(Fleet Admiral!)





Forum Posts: 132
27th Dec 2018 22:25  
>> Permalink
mdlbt.com/49165

Hi RHBaker
I had the motor ,so I used it.
The sister motor is a 3639-750kv 600Watts 8325 rpm on 3S.
The 3639-1100kv 800Watts 12210 rpm on 3S.
Next up the 3648-1450kv 1600Watts 16095 rpm on 3S.
All are straight bolt replacement, but, the 3648 requires a 100Amp ESC.

The 3639 750kv would be the better motor for the boat to get scale speed.

Canabus

RHBaker
(Fleet Admiral!)





Forum Posts: 119
27th Dec 2018 22:53  
>> Permalink
mdlbt.com/49166

Thanks, probably explains why the original motor is out of stock with no estimated replenishment date.
Will update my notes to the 3639 750 kV
Rowen