Post by retiredbri on Jun 15, 2009 20:02:33 GMT 1
Hi and welcome to the group.
The only suggestion is to get the specifications and add up the figures. The ESC has a Battery Eliminator Circuit - BEC- that takes the current from the main batteries and supplies the current at a lower voltage (usually 5volt) for the Rx and the Rx.
In doing this, it generates heat so there is a limit as to how much current it can supply PLUS there is a limit to how many cells you use in you Battery Pack.
The full size as smaller servos should have static consumption currents (just powered, not doing anything) at the BEC voltage and a separate figure when moving. Just add the current values for the 4 servos when moving.
The Rx should have a consumption figure - this is usually constant.
Add the servo currents to the Rx current and see how this compares with the BEC current supply capability.
Next, check that your battery arrangement does not exceed the BEC requirements.
Regarding Servo stall - they draw a lot of current when stalled and if this happens in mid-air, the BEC could overheat and cut-out. The Rx would not then work.
I make sure that the servos cannot stall by not overdriving them and by making sure the control rods cannot jam.
With this in mind, re-read my words above and see if it makes sense using your figures.
Regards
retiredbri.
The only suggestion is to get the specifications and add up the figures. The ESC has a Battery Eliminator Circuit - BEC- that takes the current from the main batteries and supplies the current at a lower voltage (usually 5volt) for the Rx and the Rx.
In doing this, it generates heat so there is a limit as to how much current it can supply PLUS there is a limit to how many cells you use in you Battery Pack.
The full size as smaller servos should have static consumption currents (just powered, not doing anything) at the BEC voltage and a separate figure when moving. Just add the current values for the 4 servos when moving.
The Rx should have a consumption figure - this is usually constant.
Add the servo currents to the Rx current and see how this compares with the BEC current supply capability.
Next, check that your battery arrangement does not exceed the BEC requirements.
Regarding Servo stall - they draw a lot of current when stalled and if this happens in mid-air, the BEC could overheat and cut-out. The Rx would not then work.
I make sure that the servos cannot stall by not overdriving them and by making sure the control rods cannot jam.
With this in mind, re-read my words above and see if it makes sense using your figures.
Regards
retiredbri.
