RunRyder RC
 3  Topic Subscribe
WATCH
 1 page 1882 views POST REPLY
Scorpion Power Scorpion Power
Helicopter
e-
Electric General Discussion
› Extending ESC wires
04-09-2011 04:24 AM  6 years agoPost 1
seattle_helo

rrKey Veteran

Seattle, WA USA

My Posts: All  Forum  Topic

If I must lengthen the cables from the ESC is it better to extend the battery side or the motor side? I thought the rule of thumb was extend the battery side but after searching around I'm not so sure. Is there a consensus on this?

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR
04-09-2011 04:26 AM  6 years agoPost 2
ESWLFSE

rrElite Veteran

Liberty Hill, TX

My Posts: All  Forum  Topic

I'd say it depends on where you locate the ESC with respect to the batteries and the motor, but if I had a choice I'd extend two wires instead of three.

PM  EMAIL  GALLERY  Attn:RR
04-09-2011 05:00 AM  6 years agoPost 3
Wingman77

rrProfessor

Pulaski Tennessee

My Posts: All  Forum  Topic

it does not matter, just figure out where you are putting the esc and then which lengthen which ever side is short...

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR
04-09-2011 07:29 AM  6 years agoPost 4
TomC

rrKey Veteran

Gold Coast, Queensland, Australia

My Posts: All  Forum  Topic

I was taught to try to minimise esc battery lead lengths as well as the length of the battery leads.

I was lead to understand that too much length there can lead to emf feedback (like a capacitor)which can have an adverse effect on your esc. I don't think that there is the same issue for the motor leads (which are already usually pretty short anyway).

So, if you need to lengthen anything, I think it's best to start with the motor leads.

If in doubt, check with your esc's manufacturer.

Cheers,
TomC

Nqx,Mcpx-BL,300x,450x,500x,550x
Ion-x, 10s ,SS
TT X50E 10s, HC3-Sx

PM  EMAIL  GALLERY  Attn:RR
04-09-2011 01:47 PM  6 years agoPost 5
Heli 770

rrProfessor

USA.

My Posts: All  Forum  Topic

PM  EMAIL  Attn:RR
04-09-2011 09:44 PM  6 years agoPost 6
seattle_helo

rrKey Veteran

Seattle, WA USA

My Posts: All  Forum  Topic

TomC & 770, thanks for that info. Perfect.

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR
04-13-2011 09:22 PM  6 years agoPost 7
Gernejr

rrKey Veteran

Miami, Fl

My Posts: All  Forum  Topic

When lengthening esc wire I prefer to lengthen battery side. The battery side is just straight battery voltage where the motor side is control voltage and solder joint in wires can act like resistors to a point.W
When jointing battery wires I like to strip about 1/4" of wire then tin the wire, after it cools I grinded the wire at 45 degree on both ends then add two pieces of shrink wrap , solder the two 45* wires together shrink wrap . now the electrical flow it not interrupted.

Also make sure you using same size and wire count( # of wires to make gauge wire needed)

If you look at the battery wires coming from the ESC where the tie strap and shrink wrap are thats where i jointed my wires.

Sponsored by Visa

PM  EMAIL  GALLERY  Attn:RR
04-13-2011 10:46 PM  6 years agoPost 8
TomC

rrKey Veteran

Gold Coast, Queensland, Australia

My Posts: All  Forum  Topic

Sorry mate but I don't think that your setup looks very sound. Too much wire length, esc mounted too close to Rx, multiple connectors (cable ties over some of them), and no airflow over esc (unless you have holes on top of your canopy).

Looks like you are using a Kontronik esc. In their manual they state not to extend the leads on either end.

Have a look at the following posting that shows you where to install your esc so you do not need to extend any esc leads, also min. battery lead lengths as well. I believe that this is where Align recommends to place it in their 700e manual and is where most guys that I have seen recently have placed theirs.

https://rc.runryder.com/helicopter/t637257p1/

At the bottom of this page there is a pic showing how one guy mounted his esc, like your's, in the front without extending leads. I believe he also relocated his Rx. The only think I don't like is lack of airflow, plus the fact you need to remove the canopy to connect/disconnect batteries.

Most E-heli's allow for options to install escs without extending their leads, and maintaining a reasonable distance from the Rx.

Cheers,
TomC

Nqx,Mcpx-BL,300x,450x,500x,550x
Ion-x, 10s ,SS
TT X50E 10s, HC3-Sx

PM  EMAIL  GALLERY  Attn:RR
04-14-2011 12:53 AM  6 years agoPost 9
Gernejr

rrKey Veteran

Miami, Fl

My Posts: All  Forum  Topic

Tom Hmmmm very sound , let see.

I added 6" of wire of Deans Ultra wire soldered as i explained above, Would it be OK if i add 6" of wire like so many have done but with plugs( more connectors)like whats in pictures you showed me.

Maybe I'm worng but I've not seen battery with wires that are longer than the battery itself. That back battery would have to have come with 12" of wire, wait looks like shrink wrap right there coming out of the frame under the front battery.
Guess i should show new picture where the tie strap are position over the solder joints and it not super tight just so wire aren't bouncing around.

Do you really think the Skookum 720 is to close to Kontronik ESC? I've had it closer to CC ESC need had problems.

As for the ESC under canopy and running hot. 105 degree after banging it around for 5:30 minutes @ 75% past Sunday @ 87 Degrees outside with less than 5 mph wind. I was going to pull it on Rear servo but I need some nose weight or my battery would be hanging out the front of the heli. Canopy does have large hole in the bottom.

AS for the setups with ESC on the back ,battery wiring is added too.

Heli setup is HV80 ,510MX , Main gear 110 Hemming-bone 11t pinion, 2050HS ,Edge 713 Blades, 12.5/12.5 P and 9/9 C is not a power monster but a great performing 3D heli for 6 full minutes @ 80%.

Oh Please look at heli again it's really a Custom Heli Parts Conversion Kits not standard 700E..

Anything else I'm here to learn too...

Sponsored by Visa

PM  EMAIL  GALLERY  Attn:RR
04-14-2011 06:25 AM  6 years agoPost 10
TomC

rrKey Veteran

Gold Coast, Queensland, Australia

My Posts: All  Forum  Topic

Sorry mate, I meant this to be constructive criticism.

As long as this is working well for you, that's great. At least you have a very good esc so a 'Castle Cremations' event is less likely in any case, lol!

Imho, you'll learn lots more by comparing notes first hand with local guys flying similar heli's, than general (sometime superficial) advice that can be offered on the web.

Good luck and best cheers,
TomC

Nqx,Mcpx-BL,300x,450x,500x,550x
Ion-x, 10s ,SS
TT X50E 10s, HC3-Sx

PM  EMAIL  GALLERY  Attn:RR
04-14-2011 08:08 PM  6 years agoPost 11
Gernejr

rrKey Veteran

Miami, Fl

My Posts: All  Forum  Topic

No offence taking. Yes i been down the CC Road. If they use better quality electronic in there ESC their REP would be a lot better ...I really like their Data logger..

Sponsored by Visa

PM  EMAIL  GALLERY  Attn:RR
WATCH
 1 page 1882 views POST REPLY
Scorpion Power Scorpion Power
Helicopter
e-
Electric General Discussion
› Extending ESC wires
 Print TOPIC  Make Suggestion 

 3  Topic Subscribe

Friday, September 22 - 7:22 am - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online