RCCrawler Forums

drawls88 · 09-08-2009, 11:56 PM

im still not getting any power out of my rig i changed the pinion gear to a 13t from the 16t that i started with. im trying to finger out if the radio i have is not programmed right, its the specktrum dx3.0 any suggestions on where i should start with it.

JeremyH · 09-09-2009, 01:11 AM

Losi makes two different crawlers...which one do you have?

What are the rest of the specs on your setup?

Radio = Dx3.0
Rx=?
ESC=?
Battery=?

When did your truck stop working? (after any major changes?) Can you give any symptoms? (does it work sometimes?)

vonclod · 09-09-2009, 01:17 AM

sounds like no power/stalling out..comp crawler i,m guessing, needs a kick ass batt..more info needed

constantmotion · 09-09-2009, 05:35 AM

You prolly will get more help in the brand specific thread of you truck.

Rook82 · 09-09-2009, 06:34 AM

A few things come to mind. One could be the battery as mentioned by Vonclod. The battery(s) could maybe not handle much of an amp draw. I have had some that were assembled with a crappy soldering iron (by me). They seemed fine and had good voltage, but would choke with any high current draw (amps). They would stall out due to bad connection. Once soldered with a proper iron, they worked perfect. A bad wire or bad solder joint can cause hard to see issues, that are intermitant.

Another could be a bind in the drivetrain. One way to check is to remove the motor (or atleast remove the pinion). Try rolling the chassi and see how much drag there is. If it seems excessive, you could check a few things. This could take some time to diagnose. Remove a driveshaft. Try spinning each axle and see if one has more drag. Same with the tranny. If it doesnt spin pretty easy then there may be a bad bearing, lack of lube, inproper gear mesh, bent rods creating bind in gears, etc.

ESC settings could be a cause as well. If the ESC is set wrong or not setup right I should say. It may not be sending enough current to the rig. This could be the radio settings as well.

I would as others have sugested, post up some specs on the goods installed and what rig it is. One thing you will find is almost certainly someone on here has run into it before and can provide insight if you give them enough to go on. The bind in the drivetrain is fairly easy and quick to check. But can take some time to track down if you have it. It may seem frustrating, but do not give up. Once you find the issue, you will be proud of yourself and have accomplished something. In this hobby you have to be able to either put in the time testing and trialing, or be able to have the cash to have someone else to do it. But that takes alot of the fun out of the hobby. Working through the frustration is rewarding once done.

kasper · 09-09-2009, 06:56 AM

did you get er fixed yet a little more info on your speed control battery would help good luck on that hope you get er dialed ion.

drawls88 · 09-09-2009, 08:34 PM

it is a comp crawler, xcelorin 17.5 sensored combo with spectrum dx3.0 and running losi lipo 2 cell battery. i have it at the shop they dont have any idea yet either but all of your info im putting to good use thank guys very much i will let you know the results

eric113 · 09-09-2009, 08:44 PM

So your saying that your not getting power to your truck ? If you turn on the radio and truck does the servo work ? Did you bind your radio with rx ?

NeXt559 · 09-09-2009, 08:48 PM

have you tried useing different batteries?
how bout using makeing sure you're not experienceing a short in the esc.
you sure power is getting to the esc?
checked the worms to see nothing is binding?
have you tried rebinding the rx to the tx?
checked to make sure everything is pluged in properly?

there is a lot that can go wrong in rc and troubleshooting isnt really as simple as "its not moving, how do i fix it"

drawls88 · 09-09-2009, 10:06 PM

well i get the dumb ass of the year award when i changed my pinion gear i forgot to lock tight the set screw and it was loose just barley catching so now i get to learn how to drive this beast and not bash like my artr. thanks agian guys i appreciate all the help. im hoping to get more involved with this site it is great but its kinda hard with an out of control 19 month old little girl.

vonclod · 09-10-2009, 10:09 PM

glad you got it sorted out

..remember..loctite is your friend

09-08-2009, 11:56 PM	#1
drawls88 Newbie Join Date: Sep 2009 Location: roseburg Posts: 36	still no luck with my losi im still not getting any power out of my rig i changed the pinion gear to a 13t from the 16t that i started with. im trying to finger out if the radio i have is not programmed right, its the specktrum dx3.0 any suggestions on where i should start with it.

09-10-2009, 10:09 PM	#11
vonclod Rock Crawler Join Date: Sep 2008 Location: Delta B.C. Posts: 554	glad you got it sorted out..remember..loctite is your friend

09-09-2009, 01:11 AM	#2
JeremyH I wanna be Dave Join Date: Sep 2005 Location: Houston, TX Posts: 16,952	Losi makes two different crawlers...which one do you have? What are the rest of the specs on your setup? Radio = Dx3.0 Rx=? ESC=? Battery=? When did your truck stop working? (after any major changes?) Can you give any symptoms? (does it work sometimes?)

09-09-2009, 01:17 AM	#3
vonclod Rock Crawler Join Date: Sep 2008 Location: Delta B.C. Posts: 554	sounds like no power/stalling out..comp crawler i,m guessing, needs a kick ass batt..more info needed

09-09-2009, 05:35 AM	#4
constantmotion On the lookout for Rocks Join Date: Mar 2006 Location: Monroe, Louisiana Posts: 3,711	You prolly will get more help in the brand specific thread of you truck.

09-09-2009, 06:34 AM	#5
Rook82 RCC Addict Join Date: Jul 2009 Location: Dover, NH Posts: 1,153	A few things come to mind. One could be the battery as mentioned by Vonclod. The battery(s) could maybe not handle much of an amp draw. I have had some that were assembled with a crappy soldering iron (by me). They seemed fine and had good voltage, but would choke with any high current draw (amps). They would stall out due to bad connection. Once soldered with a proper iron, they worked perfect. A bad wire or bad solder joint can cause hard to see issues, that are intermitant. Another could be a bind in the drivetrain. One way to check is to remove the motor (or atleast remove the pinion). Try rolling the chassi and see how much drag there is. If it seems excessive, you could check a few things. This could take some time to diagnose. Remove a driveshaft. Try spinning each axle and see if one has more drag. Same with the tranny. If it doesnt spin pretty easy then there may be a bad bearing, lack of lube, inproper gear mesh, bent rods creating bind in gears, etc. ESC settings could be a cause as well. If the ESC is set wrong or not setup right I should say. It may not be sending enough current to the rig. This could be the radio settings as well. I would as others have sugested, post up some specs on the goods installed and what rig it is. One thing you will find is almost certainly someone on here has run into it before and can provide insight if you give them enough to go on. The bind in the drivetrain is fairly easy and quick to check. But can take some time to track down if you have it. It may seem frustrating, but do not give up. Once you find the issue, you will be proud of yourself and have accomplished something. In this hobby you have to be able to either put in the time testing and trialing, or be able to have the cash to have someone else to do it. But that takes alot of the fun out of the hobby. Working through the frustration is rewarding once done.

09-09-2009, 06:56 AM	#6
kasper I wanna be Dave Join Date: Jul 2008 Location: appleton Posts: 2,067	did you get er fixed yet a little more info on your speed control battery would help good luck on that hope you get er dialed ion.

09-09-2009, 08:34 PM	#7
drawls88 Newbie Join Date: Sep 2009 Location: roseburg Posts: 36	it is a comp crawler, xcelorin 17.5 sensored combo with spectrum dx3.0 and running losi lipo 2 cell battery. i have it at the shop they dont have any idea yet either but all of your info im putting to good use thank guys very much i will let you know the results

09-09-2009, 08:44 PM	#8
eric113 Moderator Rule Breaker Join Date: Feb 2004 Location: Austin, Tx Posts: 5,970	So your saying that your not getting power to your truck ? If you turn on the radio and truck does the servo work ? Did you bind your radio with rx ?

09-09-2009, 08:48 PM	#9
NeXt559 RCC Addict Join Date: Jun 2008 Location: Fresno Posts: 1,464	have you tried useing different batteries? how bout using makeing sure you're not experienceing a short in the esc. you sure power is getting to the esc? checked the worms to see nothing is binding? have you tried rebinding the rx to the tx? checked to make sure everything is pluged in properly? there is a lot that can go wrong in rc and troubleshooting isnt really as simple as "its not moving, how do i fix it"

09-09-2009, 10:06 PM	#10
drawls88 Newbie Join Date: Sep 2009 Location: roseburg Posts: 36	well i get the dumb ass of the year award when i changed my pinion gear i forgot to lock tight the set screw and it was loose just barley catching so now i get to learn how to drive this beast and not bash like my artr. thanks agian guys i appreciate all the help. im hoping to get more involved with this site it is great but its kinda hard with an out of control 19 month old little girl.

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