Assembly questions - RC-Monster Forums

ozdave · **Assembly questions -** 05.18.2007, 10:21 AM

Guys got all my new bits last night, just have a few q's about assembly now :)

I'm using a bk warrior 9920 and feigao 540c 8xl

Wiring - there are 3 wires that I need to connect between the esc and motor. On the esc all 3 are blue and on the motor they are all different colours. Am i correct in thinking it doesnt matter what goes where but the wiring will determine the direction the motor runs in?

Is the motor directional? ie does it have a forward and reverse so I should ensure its wired it a particular way?

Is the ESC diectional? I thought I read somewhere that reversing the channels on he radio if its wired up incorrectly can result in a fried esc?

Theres no notch on the motor spindle for the pinion screw to bite into, I assume this is hardened. Anyone got any hot tips for cutting this? or is it a case of grab some long nose liers and hit it with a dremel til there is enough for the screw to grab onto?

am sure more will follow :) looking forward to getting this up and running!

wallot · 05.18.2007, 10:41 AM

connect the wires to the motor anyway you want and if you hit forward and truck goes the other way just change ANY two wires. motor can rotate any direction.

fry ESC? well if you are not abe to synchronize ESC with radio u need to reverse the throttle channel (i had to do with my futaba radio - did not have to do it on my previous JR)

i made a small flat spot with dremel on the shaft and use blue loctite. without the loctite it wont hold. maybe just the loctite will be ok. try it

Procharged5.0 · 05.18.2007, 10:50 AM

OZdave Do you have the Warrior install manual??? That would be helpful for you to have.

I probably have a copy if you need it.

nativepaul · 05.18.2007, 11:14 AM

Hi OzDave.

You are right in that you can connect the 3 wires to eachother in any order, if the motor runs backwards swaping any 2 of the 3 will get it spining the right way.

Brushless motors are non-directional, all the timing is handled by the ESC if you swap 2 wires as above it will run exactly the same in both directions.

My only car ESC the Mamba Max came with the correct servo reversing for my transmitter so I didn't try swaping it, some of my Plane ESCs have needed servo reversing and all that happened is that my stick worked the wrong way round before I switched it over. I wont say none are directional tho as maybe some that I haven't tried are, maybe somone with experiance of your particular ESC will chime in.

I use a dremmel with a grinding disc to put a flat on the motor shaft, when doing this make sure you have tape/cling film or something of the sort over the holes in your motor and especialy around the base of the shaft, otherwise the magnets inside the motor will pull the swarf/iron filings down the shaft and into your bearings.

Good luck with your project.

BrianG · 05.18.2007, 11:33 AM

Quote:

Originally Posted by nativepaul

I use a dremmel with a grinding disc to put a flat on the motor shaft, when doing this make sure you have tape/cling film or something of the sort over the holes in your motor and especialy around the base of the shaft, otherwise the magnets inside the motor will pull the swarf/iron filings down the shaft and into your bearings.

Very important point - I'm glad you brought that up!

Hmm, never heard the word "swarf" before though.

Procharged5.0 · 05.18.2007, 11:35 AM

swarf(swôrf) n. Fine metallic filings or shavings removed by a cutting tool.

[Of Scandinavian origin; akin to Old Norse svarf.]

The word appears legit! It's new for me too.

BrianG · 05.18.2007, 11:36 AM

Yeah, I looked it up too. Looks like we both learned something new today!

ozdave · 05.18.2007, 11:55 AM

I didnt get one with it but i found the following with a little help from google

http://www.bk-electronics.com/bk_eng.html

is it the same as what you have ?

Quote:

Originally Posted by Procharged5.0

OZdave Do you have the Warrior install manual??? That would be helpful for you to have.

I probably have a copy if you need it.

Procharged5.0 · 05.18.2007, 12:00 PM

Yes, it looks like the same one.

ozdave · 05.18.2007, 12:02 PM

Quote:

Originally Posted by nativepaul

I use a dremmel with a grinding disc to put a flat on the motor shaft, when doing this make sure you have tape/cling film or something of the sort over the holes in your motor and especialy around the base of the shaft, otherwise the magnets inside the motor will pull the swarf/iron filings down the shaft and into your bearings.

Good luck with your project.

Thanks for the tip on covering the holes Paul. Will be sure to do this.

Also thanks for the clarificaiton on the wiring guys :)