R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 01-02-2010, 11:29 PM   #1
Tech Addict
 
RussB's Avatar
 
Join Date: Aug 2005
Location: Sacramento
Posts: 736
Send a message via MSN to RussB
Default LRP SPX trouble...

Please help me diagnose what is wrong with my LRP SPX.

The motor would turn with no load on it when the trigger is pulled, i.e. wheels off or wheels on but car on a stand.

When on the ground, the car needed a push start and was very slow.

Is this overheated, blown, or something else?
RussB is offline   Reply With Quote
Old 01-02-2010, 11:36 PM   #2
Tech Fanatic
 
Join Date: Jul 2007
Location: Central Florida
Posts: 901
Trader Rating: 88 (100%+)
Default Cable

Is the sensor wire okay? I had some similar issues a while back and some of the wires going into the plugs of the sensor wire had snapped off. Just a guess though I could be way off.
tcdrvr2 is offline   Reply With Quote
Old 01-02-2010, 11:38 PM   #3
Tech Addict
 
RussB's Avatar
 
Join Date: Aug 2005
Location: Sacramento
Posts: 736
Send a message via MSN to RussB
Default

Quote:
Originally Posted by tcdrvr2 View Post
Is the sensor wire okay? I had some similar issues a while back and some of the wires going into the plugs of the sensor wire had snapped off. Just a guess though I could be way off.
that was one of the theories... i tested a different motor and it did the same thing. unless there's an internal connection problem.
RussB is offline   Reply With Quote
Old 01-02-2010, 11:39 PM   #4
Tech Regular
 
whoopass's Avatar
 
Join Date: Dec 2004
Posts: 295
Default

sounds like a classic case of 'cogging'. like before check the sensor wire on the motor/esc. but first to rule out the ESC, swap the motor and sensor wire.
whoopass is offline   Reply With Quote
Old 01-02-2010, 11:40 PM   #5
Tech Fanatic
 
Join Date: Jul 2007
Location: Central Florida
Posts: 901
Trader Rating: 88 (100%+)
Default

But did you swap the cable? Mine was at the end of the cable itself, hard to see because there's not a lot of play due to all the other wires.
tcdrvr2 is offline   Reply With Quote
Old 01-02-2010, 11:43 PM   #6
Tech Elite
 
Toh WL's Avatar
 
Join Date: May 2006
Location: Setapak
Posts: 3,567
Trader Rating: 6 (100%+)
Default

See the manual, there are steps to reset the config on the ESC. Try that with motor & sensor cable. See if it works.. If not you have to sent in to LHS for warr claim if within 120days.
Toh WL is offline   Reply With Quote
Old 01-02-2010, 11:47 PM   #7
Tech Elite
 
Toh WL's Avatar
 
Join Date: May 2006
Location: Setapak
Posts: 3,567
Trader Rating: 6 (100%+)
Default

One thing I forgot, the throttle trim on your Tx. If it set on reverse. Surely you experience extremely very slow forward push. Make sure set to neutral.
Toh WL is offline   Reply With Quote
Old 01-02-2010, 11:52 PM   #8
Tech Champion
 
STLNLST's Avatar
 
Join Date: Sep 2001
Location: Sacramento
Posts: 8,996
Trader Rating: 21 (100%+)
Default

Looks like you're not racing tomorrow
STLNLST is offline   Reply With Quote
Old 01-02-2010, 11:54 PM   #9
Tech Addict
 
RussB's Avatar
 
Join Date: Aug 2005
Location: Sacramento
Posts: 736
Send a message via MSN to RussB
Default

Quote:
Originally Posted by STLNLST View Post
Looks like you're not racing tomorrow
e-mail me punkass... [email protected]

i'm trying TO race tomorrow. these problems happened at the SWR cup back in May.
RussB is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
lrp spx stock spec chuckharrisjr Electric On-Road 1131 02-22-2017 11:58 PM
Tekin RS ESC sensored Jeff Cuffs Electric On-Road 23359 10-02-2016 06:57 AM
Ask Frank Root.....AE, Reedy, LRP, JC Frank Root Electric Off-Road 568 02-14-2010 01:24 AM
LRP SPX, no 25years warranty anymore? Tpg racer Electric On-Road 17 02-28-2009 09:24 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 04:39 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net