crawler issues

[CronusTRD]

I'm having some issues with my crawler.

I am running the following:

Tekin Rebel 2
DX3r Receiver
hitec 7955 for steering
645mg for dig
DNA dig
55t Integy Lathe Motor
8 cell 1500 nimh saddle pack from holmes hobbies
I'm running a CC BEC wired per Castle's instructions.

I'm running a droop suspension with TLT axles, to Panther Cougars on Double phatty beadlocks. 4 bearings in the front, zero in the rear.

My crawler seems to kill the battery pack within 10 minutes of use. I used to run just a 645mg and I was getting around 45 mins of use out of the pack,. Now with the upgraded servo, second dig servo, and the cc BEC, the pack is dead with 10 mins. I understand that there is a higher draw on the system, but I didn't think it would kill it that soon.

I also have a lack of power and torque. Even trying to climb a 50* carpeted incline is a struggle. The 55T lathe should have plenty of torque to at least spin the wheels, but it appears the motor just stalls.

Should I jump to Lipo?

Any ideas?

[K Riccardi]

I got nothing.

b4wheeler has 2 new sadle packs he wants to sell.

[B4wheeler]

Is the BEC a new addition?? If it is, try the setup with the BEC eliminated... I am not sure if those are configurable, but maybe tha BEC is cutting off early or drawing too much. I cant see the second servo being that hard on the system....

[rock addict]

I'm new here but i've been in this for a little while, my friend ran quad steer on his axial and we both run 850 mah lipo. he ran two 645mg servos for steering and I only run front steer, his battery life was only around ten minutes and mine was well over 30 min. he stripped the rear steer and only runs the on servo and now our time are nearly identical.I don't have a dig yet but from what i understand you don't need 144 oz our tourqe. maybe standard servo would improve your battery life:!:

[broncoholic]

I'm running the small servo for my dna with no issue.

[CronusTRD]

I used to run rear steer with dual 645mgs and still managed over 45 mins of run time.


I'll try it without the BEC, and see what happens.

[CronusTRD]

I swapped in a 45T, and the power is back, but the motor runs hot, and will start to smoke if I have to full throttle it for a hill climb.

any ideas to keep the motor life going longer?

[broncoholic]

Just a thought here mike Did you cut the red power wire from the ESC to the REC when you added the BEC. I'm not sure if this will cause the problems your having but just thought I'd mention it.

[4stAir]

hey cronus i think the bec is your issue...
wire the cc bec directly to the hot and ground on the servos. when you do that you will need to leave the hot wire from esc to rx to power the rx.
if you run the cc bec and the esc bec to the rx you will cook it.

[CronusTRD]

Just a thought here mike Did you cut the red power wire from the ESC to the REC when you added the BEC. I'm not sure if this will cause the problems your having but just thought I'd mention it.

Yes, I cut the red wire. I disconnected the BEC completely, but the motor still gets hot.

hey cronus i think the bec is your issue...
wire the cc bec directly to the hot and ground on the servos. when you do that you will need to leave the hot wire from esc to rx to power the rx.
if you run the cc bec and the esc bec to the rx you will cook it.


I'm no longer running the BEC and the motor still gets hot.

[4stAir]

change motors, put any good motor on it, if it still gets hot send that esc back to tekin. you may have cooked it.

[CronusTRD]

fawk it, I'm going to run it as is in the comp this weekend. It will either work, or go up flames, and either will be spectacular.

Afterwards, I'll order an FXR combo.

[broncoholic]

fawk it, I'm going to run it as is in the comp this weekend. It will either work, or go up flames, and either will be spectacular.

Afterwards, I'll order an FXR combo.


Thats the attitude I take"thumbsup"

[CronusTRD]

just managed to drain a pack in 5 mins...something is leeching power. Whenever I try to climb something, the rig just stalls and the motor starts to smoke.

[K Riccardi]

It has got to be the receiver or the speed controler. I'm sure you have one or the other you can swap in.

[broncoholic]

just managed to drain a pack in 5 mins...something is leeching power. Whenever I try to climb something, the rig just stalls and the motor starts to smoke.


Nothings wrong all Toyota's smoke when they try to climb something



your gonna loose sunday
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[CronusTRD]

It has got to be the receiver or the speed controler. I'm sure you have one or the other you can swap in.

Receiver is the brand new one that came with the DX3r. I have a rooster I can swap in.

[Mr_Freeze]

I had a similar problem. But I found out it was a bound tire. Turns out the pin fell out of my hub and I was tightening the wheel into the axle.

Have you tried free-wheeling the drivetrain with the motor out or pinion off? It's not a gear mesh problem?

Best to rule out the simple stuff first.

Good luck man!

[bullet1231]

what voltage are u runnin in the BEC?

[CronusTRD]

Nothings wrong all Toyota's smoke when they try to climb something



your gonna loose sunday


I could power my rig with a gerbil in a wheel, and still finish ahead of you:lol:

[CronusTRD]

I had a similar problem. But I found out it was a bound tire. Turns out the pin fell out of my hub and I was tightening the wheel into the axle.

Have you tried free-wheeling the drivetrain with the motor out or pinion off? It's not a gear mesh problem?

Best to rule out the simple stuff first.

Good luck man!

It free wheels ok, and engages/disengages 4wd ok. I'm still going to crack EVERYTHING open and look for bad spots. I had a roasted wheel bearing in the rear axle, but it was still the same afterwards.


what voltage are u runnin in the BEC?

6v, but the BEC is currently not even connected.

[champ7times]

fawk it, I'm going to run it as is in the comp this weekend. It will either work, or go up flames, and either will be spectacular.

Afterwards, I'll order an FXR combo.man we get to run some cool looking courses ,eat pizza and roast marshmollows over cronus's rig man this is gonna be sweet"thumbsup"

[hitman46mod]

Balls out man."thumbsup"

[CronusTRD]

A fix is enroute, if it gets delivered on time."thumbsup"

[CronusTRD]

My rig is now self aware....and told me Broncoholic is going to lose.

But then again, I think anyone could have told me that.



I think I fixed it. It was just a bunch of little things. I used liquid electrical tape on some of the connections to wire in the BEC and it came off causing a short. There was some binding also due to the phatties. The hex that I was using is not quite deep enough, and as a result, when I tightened down the wheels, they would rub on my straight axle adapters. There were a few other things.


Charging it now to see how it goes.

[broncoholic]

Did you get it fixed mike?

[CronusTRD]

Did you get it fixed mike?

More or less. Tweaking it now.