Can I upgrade my ECX AMP stock motor?

Dude

Member
Messages
18
Location
Utah
Can I just up grade my stock motor to 35T Brushed motor without replacing the ESC?
 
Yes, you can install a 35T brushed motor without replacing the ESC.

No, it’s not really an upgrade.

Stock motor is a 20T so most would consider a lower turn number being an upgrade as it “should” be capable of higher top speeds. Maybe look for a 12T or 15T 540 motor if your looking for a speed upgrade. Of course a hotter motor will cause an increase in heat and a decrease in run-time. You’d also benefit from a gearing change with the new setup to take full advantage of the motor upgrade.

Truth be told, I went this direction with my daughter’s truck and never really got the results we were looking for so when that motor let go I went for a cheap brushless setup (GoolRC - $45 with shipping) and never looked back. No heat issues, better speed and acceleration and her batteries lasted about 40-50% longer.

Disclaimer: GoolRC is NOT an high performance setup comparable to a Castle or Tazer setup but even a “basic” brushless system will outrun any brushed system - dollar for dollar anyway.
 
Why a 35T? Motors with that high a turn count are best for rock crawlers. The lower turn counts = higher speed/faster revolutions/lower torque; higher turn counts = higher torque/lower speed/slower revolutions.

I installed a Dynamite 15T 550 motor in my AMP truck and loved it. It did get hotter than the original 20T 540 but I was able to control that somewhat by gearing down (smaller pinion gear) 2-4 teeth.

A 55o motor is a little longer than a 540. This longer motor generates more torque.
 
When I finally smoked the stock motor, I put a Traxxas Titan 12 turn motor in the truck and it gave it a considerable jump in torque and speed on 2s lipo. It's not going to be as fast as a brushless system, but it definitely gave it more speed
 
When I finally smoked the stock motor, I put a Traxxas Titan 12 turn motor in the truck and it gave it a considerable jump in torque and speed on 2s lipo. It's not going to be as fast as a brushless system, but it definitely gave it more speed
I am trying to do this for my daughters AMP but have found the gear cover won’t fit due to the shaft of the motor being too long. Is there a gear cover that will fit?
 
I am trying to do this for my daughters AMP but have found the gear cover won’t fit due to the shaft of the motor being too long. Is there a gear cover that will fit?
I think you can just drill a hole (diameter of the shaft) in to the cover
 
This is exactly what I did
Just wondering, came across your post here. I recently also replaced the stock motor in my son's AMP with a Titan 12T 550 motor. It only ran for a short while before the ESC burned up. I not only upgraded the motor, but also went to a 8.4V 7-cell battery. I'm wondering if you stayed with the 7.2V 6-cell battery setup. Did I make a mistake by increasing battery at the same time I changed to the 12T 550 motor?
 
Just wondering, came across your post here. I recently also replaced the stock motor in my son's AMP with a Titan 12T 550 motor. It only ran for a short while before the ESC burned up. I not only upgraded the motor, but also went to a 8.4V 7-cell battery. I'm wondering if you stayed with the 7.2V 6-cell battery setup. Did I make a mistake by increasing battery at the same time I changed to the 12T 550 motor?

I know some people had and do run 15t motors maybe even 12t motors. But the stock esc is only like a 30a esc maybe even less. The 15t 540 and 12t 550 motor are hotter running motors and can draw more amps than the stock Amp esc can provide so the esc can burn up. Even a 60a esc is only rated for a 15t 540 or 12t 550 motor on 2s (8.4v). Increase voltage increase current (amp) draw.
 
Hi everyone, new to this forum and to the hobby.
I just upgraded my motor to a titan 12T(recommendation from hobby shop). I havent changed anything else. WIll I blow my esc? Should i do anything esle to ensure good performance?
 

Latest posts

Members online

Back
Top