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2 540s 1 brushless 2300kv motor 3s 5000ah lipo tank steer

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2 540s 1 brushless 2300kv motor 3s 5000ah lipo tank steer

Old 03-16-2020, 12:14 AM
  #1  
Rocket3
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Default 2 540s 1 brushless 2300kv motor 3s 5000ah lipo tank steer

Hello, Im having trouble getting a RC bulldozer steering the way that Id like, it come with the normal setup of two esc for each 540 motor and a esc for the hydraulic brushless motor, so it operates with both sticks forward for forward or pull both back for reverse, yall get the idea, I am trying to make it work with the forward and reverse plus left and right on the left stick because as it is now to operate another function I have to let off the stick and it takes power from one track or the other, Ive got it to work with a sabertooth but the 3s lipo ruins the 540 motors I need something that will mix the two motor channels and control the voltage into the 540 motors any help be much appreciated thanks
Old 03-16-2020, 06:28 AM
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Better ask in a dedicated track (sub)forum. Don't forget to post your equipment/radio/controllers/make/type/gearing/ratings/voltage/current/...

E.g.
www.rcuniverse.com/forum/rc-tanks-369
www.rctankwarfare.co.uk
RC Tanks - RC Groups
Old 03-17-2020, 12:45 AM
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Default Hello did you mean a tank sub forum

I have never ever belonged to something like this before, so please forgive me, could you point me in the right direction because this situation is driving me crazy!!!!!
thanks!
Old 03-17-2020, 12:33 PM
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You won't find much track knowledge/experience in this electric flight subforum. Not to mention that RC Universe has gone a bit quiet over the years.
Try the three (sub)fora I referred you to in my previous message.

Also several bulldozer, tank and track subfora in this forum
www.rctruckandconstruction.com
Semi Trucks and Construction Equipment - RCG

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Old 03-17-2020, 12:58 PM
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Note that Kv says very little about max.power or max. current a motor can handle, or about max. torque, or propsize. A 1:1 train motor and the motor in your toothbrush or in a bedroom appliance can have the same Kv of 2200rpm/volt.

Kv is the velocity constant, a physical property like mass, speed and length, expressed in the unit rpm/volt.

Kv is not a rating, not a figure of merit (explanation).
A Kv=1000rpm/volt motor on 10volt and a Kv=20000rpm/volt on 5volt will give same (no_load)speed of 10,000rpm, provided the motors can handle the current and power.

It's all about what the motor wants to do versus what the motor can do.
Kv matches desired rpm and battery voltage, there's nothing more to it.
  1. Want
    Kv and voltage determine how fast motor wants/tries to run
    (rpm_noload = voltage Kv, or, in other words, Kv = rpm_noload / voltage.)
  2. Current
    RPM and prop determine torque, which in turn determines current
    (current = torque Kv, in SI units!, or proportional to Kv Name:  eek.gif
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Size:  1.0 KBName:  eek.gif
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Size:  1.0 KB).
  3. Can
    Max.current and max.power determine whether that battery/motor/rpm/prop combo can run without going up in smoke.
An engine tries to keep a constant torque: as load goes up, rpm goes down.
An e-motor tries to keep a constant rpm, no matter the load: as load goes up, torque must go up, and therefore current goes up.

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