RunRyder RC
 3  Topic Subscribe
WATCH
 1 page 890 views POST REPLY
Scorpion Power Scorpion Power
Helicopter
e-
Electric Motors-Controllers-ESC
Other › Hacker 48-3P Opto cutting out
12-17-2003 08:18 PM  13 years agoPost 1
heligroup

rrNovice

Washington State Olympia

My Posts: All  Forum  Topic

My Hacker ESC worked fine up to now it runs on 14 cells 3300 and turns a hacker C15 15L.

Lately it starts shutting down the motor half way into the flight around 3 to 4 min. I land (auto) and a few seconds later it spools up again.

It works for another 20 sec. or so under flight conditions and than shuts down again. This repeats until pack is empty.

Receiver power via the installed UBEC is always there. No problem with working servos or gyro.

Unit is not hot 94 degrees measured. The unit is fairly new has maybe 20 flights on it.

Does anybody have any suggestions.

Thanks

PM  EMAIL  Attn:RR  Quote
12-18-2003 02:27 AM  13 years agoPost 2
BIGRCR

rrVeteran

Easley, South Carolina

My Posts: All  Forum  Topic

Make sure that your gear meshes are not too tight, this is real easy to do and is best set by eyeball and not a piece of paper. You can feel the right amount of backlash but no drag on the gear train.

Make sure that the controller is mounted where it can get enough cooling. This may mean cutting a hole in the cowl to facilitate enough cooling on the ESC.

Make sure that all of your connections are good and the solder joints are very good. If not this can lead to too much current draw and cause a heating problem.

At any rate, you either have a cooling issue or a heating one . Take care of this and you problem should go away.

Hope this helps!

BIGRCR- John Garst

PM  EMAIL  GALLERY  Attn:RR  Quote
12-18-2003 03:49 AM  13 years agoPost 3
heligroup

rrNovice

Washington State Olympia

My Posts: All  Forum  Topic

Gear mesh is perfect, very low drag, canopy has 6 vent holes, connection "seem" to be good but I have to recheck them.

As I mentioned before I measured 94 degrees on the ESC, I don't think that's excessive ??

Leaves me with checking soldering connections and if they are good I guess I have a faulty unit ??

PM  EMAIL  Attn:RR  Quote
12-18-2003 04:16 AM  13 years agoPost 4
estevens

rrVeteran

Phoenix, Arizona

My Posts: All  Forum  Topic

Have you tried another battery pack? It almost sounds like the pack is dumping under load. After it sits it comes back just enough to spool up. I have seen a hacker controller thermal before, but it did not shut the motor completely off. When it the hacker controller starts to overheat power output is decreased, not shut off like others.
94 degrees is well below the thermal point for that controller as I have seen them run much hotter without any problems.

PM  EMAIL  GALLERY  Attn:RR  Quote
12-18-2003 08:02 AM  13 years agoPost 5
ufon

rrNovice

Prague, Czech Republic

My Posts: All  Forum  Topic

There were some sporadic problems reported due to wrong or not correct motor timing and switching frequency settings. Problem with those settings is that even wrongly set motor usually runs but not as it should. Check this maybe it is a part of the problem.

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
WATCH
 1 page 890 views POST REPLY
Scorpion Power Scorpion Power
Helicopter
e-
Electric Motors-Controllers-ESC
Other › Hacker 48-3P Opto cutting out
 Print TOPIC  Make Suggestion 

 3  Topic Subscribe

Friday, October 20 - 2:35 am - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online