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[timfedup]

Hi briefly I want to change my krik lisa m to brushless with minimum effort and cost and have very little knowledge of brushless .really after recommendations of motors and esc .I have the model fitted with a 540 size right now and don't really want to change too much inside to accommodate the brushless ....Thanks for any help ..

[canabus]

HI Timfedup

The 540 motor is generally 35mm diameter with a 3.175mm(1/8") shaft.
Depending on the speed you require, the Hobbyking 3639-750kv or 3639-1100kv.
These have a 5mm shaft, so metal uni joints from Banggood are cheap and strong.
Note the brushless motor are far more powerful than the 540 motors.
The 3639-750kv is 600watts and the 3639-1100kv is 800watts.
The 540 is about 90watts !!!
As for ESC's I use the Hobbyking car 60Amp (part no, HK-60A SL) with the program card.
It handles 2-4S Lipo batteries and has an on/off switch, also a cooling fan on top.

I would go with a 3639-750kv on 3S 3300mah Lipo (part no.9067000038-0) weight 288grams(139 x 45 x 24mm) XT-60 connectors, 60 Amp car ESC(91 grams).
Start with the same prop, but, a 2 blade 40mm or 3 blade 37mm works great on both size motors.

I am using the 3639-1100kv on 3S with the 2 blade prop in my 34" Sea Commander with great results.

Canabus

[timfedup]

Brilliant thankyou I was looking at a 100kv from hobbyking but was rather unsure....you've helped me greatly THANKYOU

[timfedup]

100kv rather

[imsinking]

100kv rather

Hmm , you mean a 1000 Kv perhaps ?
I've just fitted a Tornado thumper V3 3530 / 14 1100Kv Outrunner (it's TINY ! ) to a 32" Huntress + a 40x prop & it really shifts . . . .
These are stocked by Overlander Battery's .
I've been convinced that OUTRUNNER motors are better for boat's,stacks of torque , also has a 4mm shaft (hardened , you'll need a diamond file to put the flat on )
Bill

[timfedup]

Thankyou yes I've seen that motor when searching ..THANKS

[canabus]

1100kv on 3S lipo(11.1 volts, but charge up to 12.6 volts new)=12,210 rpm unloaded.
The D3548/4-1100kv is 910watts(out runner) against the 3639-1100kv 800watts(in runner).

Canabus