SG Crawlers Forum
Search
 
 

Display results as :
 


Rechercher Advanced Search

SGCrawlers - Crawl & Trail videos
SGCrawlers - Bash Tour Drift videos
Who is online?
In total there are 3 users online :: 0 Registered, 0 Hidden and 3 Guests

None

[ View the whole list ]


Most users ever online was 57 on Fri 23 Sep 2016 - 12:58
Latest topics
» [Night Drifting] 27 Apr 2017 2030hrs - Buangkok Sports Park near Blk 986A - MSCP at Blk 984
by boolean21 Yesterday at 21:54

» WTS Axial SCX10 RTR Jeep wrangler Rubicon
by Clkken Yesterday at 0:24

» [Offroad Trails] Offroading at Tampines Quarry 23 Apr 2017 - 0900hrs
by boolean21 Sat 22 Apr 2017 - 16:25

» [PHOTOS] 20170416 Punggol East Hardcourt on road RC
by boolean21 Sun 16 Apr 2017 - 12:59

» [Touring / Bikes / onroad bash / Semi] 16 Apr 2017 0900hrs - Touring, Biking, Semi Trucks and more @ 60 Punggol East
by boolean21 Sat 15 Apr 2017 - 15:27

» [PHOTOS] 20170402 Woodgrove Trail and Bash
by boolean21 Mon 10 Apr 2017 - 22:59

» [Scale Trails] Woodgrove Ave - Sunday 02 Apr 2017 0900hrs
by boolean21 Sat 1 Apr 2017 - 9:58

» WTS: Turnigy 5000mAh 6S 20C Lipo Pack w/4mm HXT Connector
by purexc Tue 21 Mar 2017 - 11:45

» WTS : [BN] Turnigy P405 Dual Input (AC/DC) 45W Digital Balancing Charger
by purexc Mon 20 Mar 2017 - 18:05

» Newbie Build on my SCX10
by Kirbugoy Sun 19 Mar 2017 - 18:23

» [PHOTOS] Japanese rally cars from the 90s, Tamiya-style
by boolean21 Sat 18 Mar 2017 - 10:58

» [Offroad Trails] Offroading at Tampines Quarry 19 Mar 2017 - 0900hrs
by boolean21 Sat 18 Mar 2017 - 0:10

» WTS: Scale Pro-Line Jeep Unlimited Painted Body (Olive Green)
by DWJL511 Thu 2 Mar 2017 - 19:28

» WTB trail truck.
by tlsrichmond Wed 1 Mar 2017 - 18:23

» [VIDEO] RC Scale Trucks Offroad Adventures RC Toyota Hilux Land Rover Defender 90 G Wagon Suzuki Jimny
by boolean21 Mon 20 Feb 2017 - 22:50

» Newbie intro and... updates?
by boolean21 Mon 20 Feb 2017 - 8:23

» [VIDEO] Fix stripped screw holes with brass knurled nuts
by babyboy Mon 20 Feb 2017 - 1:06

» [Night Drifting] 16 Feb 2017 2030hrs - Buangkok Sports Park near Blk 986A - MSCP at Blk 984
by boolean21 Wed 15 Feb 2017 - 20:46

» [BUILD THREAD] Boolean21's Realacc x210 build diary
by boolean21 Sat 4 Feb 2017 - 0:28

» [Durian Loop Trail] Rifle Range Road - Durian Loop Trail - 05 Feb 2017 0900hrs
by boolean21 Sat 4 Feb 2017 - 0:27

April 2017
MonTueWedThuFriSatSun
     12
3456789
10111213141516
17181920212223
24252627282930

Calendar Calendar

Affiliates
free forum

Free Domain Name
Google+

Crawler gone wild weird ESC problem

View previous topic View next topic Go down

Crawler gone wild weird ESC problem

Post by Neodymium09 on Thu 26 Dec 2013 - 21:55

Hello SGCers,

My SCX10 facing weird problem after some water dipping. Vehicle seems lurch and move randomly on its own. Only throttle affected steering seems ok.
Once brought back home weirdly it blasted forward full throttle (even with the switch set to 'off').
Had to discon the batts to stop it.

After disconnecting all lighting connectors and directly connecting the esc, motor and receiver to simplicity, i discovered this.

Even with the ESC switch set to off (and also on), there is a 7.4 volt output from the ESC constantly irregardless of on/off switch and without any transmitter inputs.

I am suspecting it is the ESC that screws up but since it is the HPI SC-15 WP (supposed to be waterproof) I am having doubts if that's the problem. I am running this with the Novak's Fifty-Five Crawler Brushed Motor.

I think the receiver is ok since all my LED lights responds accordingly to the transmitter inputs.

Anyone faced such problems or can advise/confirm if the ESC is the problem (before I purchase a replacement). Any further inputs on how to further confirm appreciated!  cheers 

Thanks and sorry for the long-winded write-up. My second rig to be downed in 2 weeks, and getting desperate.. lol  Sad 
avatar
Neodymium09
Crawler

Posts : 36
Join date : 2013-07-14
Location : Punggol

View user profile

Back to top Go down

Re: Crawler gone wild weird ESC problem

Post by oceanic on Fri 27 Dec 2013 - 7:29

Bro, points to note, even if it says WP on electronics, it doesn't mean its submersible. Its so call "splashproof".
Also unplug batt from truck if not using. Even if its off, It'll go flat the next day.

_________________
avatar
oceanic
Moderator

Posts : 1212
Join date : 2012-03-21
Location : N1°24.229' E103°48.094

View user profile http://sgcrawlers.weebly.com

Back to top Go down

Re: Crawler gone wild weird ESC problem

Post by Neodymium09 on Fri 27 Dec 2013 - 7:40

Bro oceanic, got it, thanks.. hmm seems not worth spending the extra $$ on 'WP' stuff.. Might just go for other ESC replacements huh? So far my 'ballooning' efforts on other rigs haven't fail me yet.. lol..  Razz 
avatar
Neodymium09
Crawler

Posts : 36
Join date : 2013-07-14
Location : Punggol

View user profile

Back to top Go down

Re: Crawler gone wild weird ESC problem

Post by laneboysrc on Fri 27 Dec 2013 - 7:41

Weird indeed.

Dirt may have collected inside the ESC, brought in through the water, causing flow of electricity where it shouldn't (e.g. turning on the output FETs even when the ESC is off).

Try taking the case of the ESC off and clean the circuit board, using an old toothbrush and Isopropyl alcohol.

If you don't mind a trip to Woodlands I'd be happy to take a look.

avatar
laneboysrc
Crawler

Posts : 869
Join date : 2012-05-21

View user profile http://laneboysrc.blogspot.com

Back to top Go down

Re: Crawler gone wild weird ESC problem

Post by Neodymium09 on Fri 27 Dec 2013 - 7:58

Ok laneboys Snr,

Will try to see if I can open this thing up, and not destroy any factory waterprofing.. lol
If I cant figure it out will get in touch with you again.
avatar
Neodymium09
Crawler

Posts : 36
Join date : 2013-07-14
Location : Punggol

View user profile

Back to top Go down

Re: Crawler gone wild weird ESC problem

Post by laneboysrc on Fri 27 Dec 2013 - 8:29

The factory waterproofing is usually a coat of conformal coating (https://en.wikipedia.org/wiki/Conformal_coating) on the circuit board. Unless you poke around with a sharp object it won't get hurt.

I haven't opened the HPI SC-15 WP yet (but we do have one in our Dingo too), but I guess the heatsink can be pulled off, and then there will be some latches on the sides of the case. Maybe some stickers have to be peeled back to expose the latches.
avatar
laneboysrc
Crawler

Posts : 869
Join date : 2012-05-21

View user profile http://laneboysrc.blogspot.com

Back to top Go down

Re: Crawler gone wild weird ESC problem

Post by spyder_696 on Fri 27 Dec 2013 - 17:35

i have a similar issues with you recently with my hobbywing.
had contact with some water.
the mt-4 throttle become non functional.
the car cannot move forward with the green led always on with beep beep sound.
brought it home and place of table.
the car jerk forward so hard that my plastic table map was damaged badly.
then after a few recalibration.
as well as total reset of the mt-4.
everything was back to normal.
guess i was lucky.
so scare of water now.
(btw, mine is brushless)

spyder_696
Crawler

Posts : 17
Join date : 2013-10-04

View user profile

Back to top Go down

Re: Crawler gone wild weird ESC problem

Post by Neodymium09 on Fri 27 Dec 2013 - 20:09

Hmm strangely familiar. I swapped the faulty HPI SC-15WP with another Axial AE-2 and things work perfectly. Now I am convinced the ESC is damaged. Tried opening up but there is a thick black silicon like compound sealing everything under the hard casing. Tried to peel some but it was brittle and broke into pieces. Stopped messing around with it for now coz had to cut the connecter to the receiver to bring over to the AE-2 replacement.. lol Embarassed 
Will revisit the faulty ESC when i can buy and replace the connector to the receiver.

Kinda like the AE-2 now since I don't have to press reverse twice to reverse.. cheers
avatar
Neodymium09
Crawler

Posts : 36
Join date : 2013-07-14
Location : Punggol

View user profile

Back to top Go down

Re: Crawler gone wild weird ESC problem

Post by Sponsored content


Sponsored content


Back to top Go down

View previous topic View next topic Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum