RCCrawler Forums

ser3100 · 08-29-2009, 11:54 PM

OK. Here's my situation. I picked up a used scx-10 that had a mamba max esc with a Novak 55T motor hooked up to a JR xs3 radio. The servo that came with the truck was a HItek 5955tg. Everything worked fine and dandy. So i just built my son his first crawler (Venom Creeper) and i didnt have the money to buy new electronics so i just swapped my stuff over to his to try out. The only thing different is i used an ACE DS1313 servo on his rig.

Since swapping over the stuff, weve been having some problems. With all this in the SCX, everything was fine...no glitching, esc barely warm to the touch, no issues whatsoever. Now his rig is only able to move 5 ft then it starts to go haywire. And now the esc is hot to the touch. I temped it and it was around 120deg which is still not bad but like i said before, it was barely warm to the tough.

Some other things i forgot to mention, im using his traxxas reciever that came with his slash as well as his old TQ radio.

i thought it was his radio but when i went back to my JR radio, it started to do the same thing. WHat the hell is going on?

Someone said i need a BEC but why would i need it if everything was fine in the SCX. I did nothing different other than change the reciever and radio. Please help!!!!

TattooKenny · 08-30-2009, 12:18 AM

The new rig is a lot heavier than the other you took it out of and is geared different as well. Check your battery. I would agree with the BEC, it will take a load off the ESC!

Failedabortion · 08-30-2009, 12:35 AM

It might need a bec. I've never ran my max without one.

mm has a 6v 3a bec built in, the sidewinder has a 1.5a bec I believe...

Had to use my 7955tg in the slash(sidewinder) one night and it would lose steering, esc would get hot and thermal after maybe 20 seconds...

ser3100 · 08-30-2009, 08:43 AM

Would gearing it lower help any. I used a 16t pinion instead of the 15 that venom supplied. Im just confused cuase i didnt have this issue in the SCX-10. How do i know if the esc is messed up in any way? BTW im using the same batteries that i used in my previous rig, 3s lipo 1000Mah 10c. I also tried 2s's at 2200 and 3200 with 25-30c ratings and still nothing. After 5ft, it glitches like hell and the esc heats up.

sddill · 08-30-2009, 09:19 AM

I would check the esc and make sure it didn't get reset back to brushless mode

WolverineX · 08-30-2009, 09:28 AM

99% sure it'll be because you need to run a bec with that high torque diital servo. I have had 1 Mamba Max and a Castle BEC (set to 6v) running two Novak 55t motors and 2 ACE1015S servos, also had 2 Mamba Max's and a Castle BEC running same motors and servos - no problems at all.

abadk9420 · 08-30-2009, 09:36 AM

I'd also check the drive train on the Venom Creeper and make sure it all turns freely with no binding, and yes a smaller pinion would help take a load off everything, maybe even go to a 14T pinion, but I would start with a Castle BEC and resetting everything after you check the drive train.

ser3100 · 08-30-2009, 09:57 AM

OK this all seems to be related to running the setup MM with the high torque ace servo. I think the old setup had way more torque (hitec 7955) but maybe im missing something. How bout trying to run the stock slash servo in it for the time bieng until i get the BEC. That one does not have nearly the torque as the ds1313 does. Would that help anything out. My 9yr old son just wants to be able to follow dads AX 10 around the rocks and i feel for him cuase he cant.

Why doesnt my ax10 have these problems. Im running that on my JR radio, JR rs310 reciever, Hitec 5955 tg servo, Novak rooster crawler 55t geared at 87/16?

Ghost · 08-30-2009, 10:12 AM

Try re-calibrating the esc and radio, you said you switched radio gear, but I didn't see if you calibrated the esc to the new radio.
Hope it helps

ser3100 · 08-30-2009, 10:14 AM

Ive calibrated 3 diff radios to it and nothing. I even went back to my old setup with my JR radio and it started to act funny with that one. I just dont want to eld up blowing something down the road.

JohnRobHolmes · 08-30-2009, 10:58 AM

Could just be a bad servo that is dead shorting the BEC. Unplug the servo and see how long it runs.

ser3100 · 08-30-2009, 05:49 PM

What does dead shooting mean? Ill try a diff servo and go from there.

JohnRobHolmes · 08-30-2009, 08:53 PM

Dead shorting, when the servo pulls too much current.

ser3100 · 08-30-2009, 09:16 PM

Am i messing up anything if that is the problem?

JohnRobHolmes · 08-30-2009, 10:21 PM

probably not. If the MM still works it was just overheating. Just get a new servo to try out and don't run it till you do.

RustlerHustler · 08-30-2009, 10:54 PM

You may also want to check your gear mesh. If it's to tight it will cause an extra draw on the esc and battery causing them to heat up.

ser3100 · 08-30-2009, 11:21 PM

I just got a BEC but the guys at ultimate hobbies kept telling me that i dont need one cuase the MM has a built in one. So do i really need one or not. Most of you guys are running one so what gives.

SACCO · 08-30-2009, 11:42 PM

Quote:

Originally Posted by ser3100

I just got a BEC but the guys at ultimate hobbies kept telling me that i dont need one cuase the MM has a built in one. So do i really need one or not. Most of you guys are running one so what gives.

Yes

your servo and your esc will thank you for it. Ultimate Hobbies should be removed from your "ask for advice" list.

Dont forget to remove the red wire from the esc if you run the bec thru the rec.

ser3100 · 08-31-2009, 07:49 AM

OK so this begs the question, should i also add a BEC to my crawler. I myself have an AX-10 with a rooster crawler combo 55t, hitec hs5955tg servo, hooked up to a JR rs310 reciever.

Going back to my sons Venom, will adding the BEC help in taking some heat away from the MM. I know its not that hot (120deg) but like i mentioned before, this thing barely got luke warm in my old scx10.

Failedabortion · 08-31-2009, 10:39 AM

A rooster crawler has a bec rated at 6v 5a, the mamba is only rated for 3a.

Try the 5955 in the venom if you want to try it before putting a bec in to eliminate it being the servo.

08-29-2009, 11:54 PM	#1
ser3100 RCC Addict Join Date: Feb 2006 Location: Bellflower, CA Posts: 1,028	I need HELP!...Mamba max issues OK. Here's my situation. I picked up a used scx-10 that had a mamba max esc with a Novak 55T motor hooked up to a JR xs3 radio. The servo that came with the truck was a HItek 5955tg. Everything worked fine and dandy. So i just built my son his first crawler (Venom Creeper) and i didnt have the money to buy new electronics so i just swapped my stuff over to his to try out. The only thing different is i used an ACE DS1313 servo on his rig. Since swapping over the stuff, weve been having some problems. With all this in the SCX, everything was fine...no glitching, esc barely warm to the touch, no issues whatsoever. Now his rig is only able to move 5 ft then it starts to go haywire. And now the esc is hot to the touch. I temped it and it was around 120deg which is still not bad but like i said before, it was barely warm to the tough. Some other things i forgot to mention, im using his traxxas reciever that came with his slash as well as his old TQ radio. i thought it was his radio but when i went back to my JR radio, it started to do the same thing. WHat the hell is going on? Someone said i need a BEC but why would i need it if everything was fine in the SCX. I did nothing different other than change the reciever and radio. Please help!!!!

08-30-2009, 12:18 AM	#2
TattooKenny Who's your Daddy-0! Join Date: Mar 2008 Location: Augusta Posts: 5,009	The new rig is a lot heavier than the other you took it out of and is geared different as well. Check your battery. I would agree with the BEC, it will take a load off the ESC! Last edited by TattooKenny; 08-30-2009 at 12:31 AM.

08-30-2009, 12:35 AM	#3
Failedabortion Rock Crawler Join Date: Feb 2009 Location: Surprise, Az Posts: 848	It might need a bec. I've never ran my max without one. mm has a 6v 3a bec built in, the sidewinder has a 1.5a bec I believe... Had to use my 7955tg in the slash(sidewinder) one night and it would lose steering, esc would get hot and thermal after maybe 20 seconds...

08-30-2009, 08:43 AM	#4
ser3100 RCC Addict Join Date: Feb 2006 Location: Bellflower, CA Posts: 1,028	Would gearing it lower help any. I used a 16t pinion instead of the 15 that venom supplied. Im just confused cuase i didnt have this issue in the SCX-10. How do i know if the esc is messed up in any way? BTW im using the same batteries that i used in my previous rig, 3s lipo 1000Mah 10c. I also tried 2s's at 2200 and 3200 with 25-30c ratings and still nothing. After 5ft, it glitches like hell and the esc heats up.

08-30-2009, 09:19 AM	#5
sddill RCC Addict Join Date: Nov 2007 Location: E.T.R.C. Posts: 1,575	I would check the esc and make sure it didn't get reset back to brushless mode

08-30-2009, 09:28 AM	#6
WolverineX Quarry Creeper Join Date: Jan 2009 Location: North Wales, UK. Posts: 404	99% sure it'll be because you need to run a bec with that high torque diital servo. I have had 1 Mamba Max and a Castle BEC (set to 6v) running two Novak 55t motors and 2 ACE1015S servos, also had 2 Mamba Max's and a Castle BEC running same motors and servos - no problems at all.

08-30-2009, 09:36 AM	#7
abadk9420 RCC Addict Join Date: Apr 2008 Location: Sacramento Posts: 1,210	I'd also check the drive train on the Venom Creeper and make sure it all turns freely with no binding, and yes a smaller pinion would help take a load off everything, maybe even go to a 14T pinion, but I would start with a Castle BEC and resetting everything after you check the drive train.

08-30-2009, 09:57 AM	#8
ser3100 RCC Addict Join Date: Feb 2006 Location: Bellflower, CA Posts: 1,028	OK this all seems to be related to running the setup MM with the high torque ace servo. I think the old setup had way more torque (hitec 7955) but maybe im missing something. How bout trying to run the stock slash servo in it for the time bieng until i get the BEC. That one does not have nearly the torque as the ds1313 does. Would that help anything out. My 9yr old son just wants to be able to follow dads AX 10 around the rocks and i feel for him cuase he cant. Why doesnt my ax10 have these problems. Im running that on my JR radio, JR rs310 reciever, Hitec 5955 tg servo, Novak rooster crawler 55t geared at 87/16?

08-30-2009, 10:12 AM	#9
Ghost Rock Crawler Join Date: Jan 2006 Location: Phoenix Posts: 573	Try re-calibrating the esc and radio, you said you switched radio gear, but I didn't see if you calibrated the esc to the new radio. Hope it helps

08-30-2009, 10:14 AM	#10
ser3100 RCC Addict Join Date: Feb 2006 Location: Bellflower, CA Posts: 1,028	Ive calibrated 3 diff radios to it and nothing. I even went back to my old setup with my JR radio and it started to act funny with that one. I just dont want to eld up blowing something down the road.

08-30-2009, 10:58 AM	#11
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	Could just be a bad servo that is dead shorting the BEC. Unplug the servo and see how long it runs.

08-30-2009, 05:49 PM	#12
ser3100 RCC Addict Join Date: Feb 2006 Location: Bellflower, CA Posts: 1,028	What does dead shooting mean? Ill try a diff servo and go from there.

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08-30-2009, 08:53 PM	#13
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	Dead shorting, when the servo pulls too much current.

08-30-2009, 09:16 PM	#14
ser3100 RCC Addict Join Date: Feb 2006 Location: Bellflower, CA Posts: 1,028	Am i messing up anything if that is the problem?

08-30-2009, 10:21 PM	#15
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	probably not. If the MM still works it was just overheating. Just get a new servo to try out and don't run it till you do.

08-30-2009, 10:54 PM	#16
RustlerHustler Quarry Creeper Join Date: Apr 2009 Location: Ukiah Posts: 370	You may also want to check your gear mesh. If it's to tight it will cause an extra draw on the esc and battery causing them to heat up.

08-30-2009, 11:21 PM	#17
ser3100 RCC Addict Join Date: Feb 2006 Location: Bellflower, CA Posts: 1,028	I just got a BEC but the guys at ultimate hobbies kept telling me that i dont need one cuase the MM has a built in one. So do i really need one or not. Most of you guys are running one so what gives.

08-31-2009, 07:49 AM	#19
ser3100 RCC Addict Join Date: Feb 2006 Location: Bellflower, CA Posts: 1,028	OK so this begs the question, should i also add a BEC to my crawler. I myself have an AX-10 with a rooster crawler combo 55t, hitec hs5955tg servo, hooked up to a JR rs310 reciever. Going back to my sons Venom, will adding the BEC help in taking some heat away from the MM. I know its not that hot (120deg) but like i mentioned before, this thing barely got luke warm in my old scx10.

08-31-2009, 10:39 AM	#20
Failedabortion Rock Crawler Join Date: Feb 2009 Location: Surprise, Az Posts: 848	A rooster crawler has a bec rated at 6v 5a, the mamba is only rated for 3a. Try the 5955 in the venom if you want to try it before putting a bec in to eliminate it being the servo.

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