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Weird problem with my E-Revo

Started by googboog, April 20, 2013, 08:26:46 PM

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googboog

I just got some new batteries and plugged everything in, the steering is now locked to the left. Even after disconnecting everything, it seems like the servo's have just locked it up in that position (can't even manually turn it back)
I'm also not getting any drive in the motor *motor's are running but the car is not moving.
I tried binding the tx rx again and again but no use.  ??? ???
E Revo Brushless

googboog

E Revo Brushless

krish_savage xs

For the motor issue, the pinion gear might be loose or stripped. Just open the gear cover and have a look.
What happens when an unstoppable force collides with an immovable object.

googboog

I just did that, you are right. There's a gap between the gears. any ideas about the servo?
E Revo Brushless

krish_savage xs

I'm not sure about the servo but try this, disconnect both the steering links and then try with your receiver, if it still does not budge then i think you have a blown servo.
What happens when an unstoppable force collides with an immovable object.

googboog

E Revo Brushless

googboog

Also, I need a new pinion gear, would appreciate any help in obtaining one locally
E Revo Brushless

googboog

I disconnected the servos, one of them goes to the left and gets stuck there when i power on, the other one is fine. if i manually move it back, it goes back to that position again when i power on
E Revo Brushless

abhisheknakhwa

You sure the channels for the steering and throttle have not been accidentally swapped on the receiver?
Does changing the steering trim make any difference?

Before throwing the servo out, it might be worthwhile to dismantle the drivetrain in the servo to see if the servo motor still works. maybe that servo is just jammed on the end-post or something.

krish_savage xs

Contact Kapil Jolly of Dogbone Racing, he is the official distributor for Traxxas products in india. He might be able to help you out with the pinion gear.
What happens when an unstoppable force collides with an immovable object.

googboog

I disconnected the servos so that they can turn freely when I switch it on, one of them seems to be working fine but the other one is slow and almost dead. it's also getting hot. it might be a problem with the servo.
Rather, it IS a problem with the left servo
E Revo Brushless

iamahuman

It sounds like a problem with the servo. You can get a good servo and get rid of the dual servo setup. No matter how hard you try to synch their action, they will fight each other.

"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.

googboog

HiTech servo's are a bit out of budget at the moment. Do you know of any replacement servos I can get in Bangalore? The other option is to order another 2075 from towerhobbies :(
E Revo Brushless

iamahuman

In Bangalore? Hard to say but there might be a Sanwa servo that can do the job. Since you don't race, speed is not as important as torque is.

Anything in the 220- 250 oz.in range should suffice. What price range are you looking at for the servo?
"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.

googboog

 2000/- (+ or -) for everything that's needed to start driving
http://shop.sumeetinstruments.com/index.php?route=product/category&path=25_36
I found these but I don't know what else i'll need to start driving. I'm told I need to program these servos
E Revo Brushless

googboog

do you have a spare pinion that you might want to sell, by any chance :D
E Revo Brushless

googboog

#16
I would spend more on a good one if I know it's a one time investment (bashing only) but I don't know what other parts I need, I don't want to spend 6000 on a servo and realize it doesn't work with the revo because it doesn't fit or the voltage is not proper

Guess I'm down to one servo for now.
E Revo Brushless

ketan rs

Get a savox 1256-tg. I bought mine from asiatees.com for 70$.
Check out the specs.
http://www.savoxusa.com/Savox_SC1256TG_Digital_Servo_p/savsc1256tg.htm
Check out this revo using the same servo,it has got sufficient speed and torque.


Thunder Tiger MT4G3

googboog

Did you have to modify the chassis to get it to fit? This guy has had to make some adjustments to get it to fit
Also, did you have to do any programming or did you just bold it on and start using it
E Revo Brushless

googboog

I will order it but I need to know what other parts I need to get it to work, BEC, etc.
E Revo Brushless

ketan rs

I don't have an e-revo,i bought it for my MT4g3.Check out the forums about the modifications to be made,slight modifications won't matter much.
And about the bec,check the voltage output from ur esc.
220 oz-in@4.5v torque should be enough,but if you are in need of more speed and torque go for an external bec.
Thunder Tiger MT4G3

googboog

Ah okay, yeah that should be enough. I believe the stock built in BEC is set at 5 or 6V, I was worried it would be under-powered.
So should I go ahead an order it? Did you need to buy new servo horns or anything else?
E Revo Brushless

ketan rs

The site offers free express international shipping for orders above 75$,so i just bought an aluminium 25T servo horn and few spares. ;)
Thunder Tiger MT4G3

googboog

Cool thanks for the help, man :)
All their servo horns are out of stock though :banghead:
E Revo Brushless

ketan rs

U can even go for this servo,but enquire about the stock.
http://www.rotor.co.in/details.php?id=725
4000 bucks is a good price for that servo. 
Thunder Tiger MT4G3