Thread: Discussion Walkera V450D01
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Old Oct 16, 2012, 06:50 AM
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Originally Posted by IntegrityHndywrk View Post
Well, if you remember. I recently came to this conclusion as well. I don't think i have mentioned it but since installing the first new RX on my old heli i have been flying using the throttle 2 port full time with no issues and i MUCH prefer the throttle response without a governor. With a governor you may not notice the smoother higher resolution feel to the throttle because it does not rev the throt. But the throttle 2 port is where I will now always suggest to plug the ESC in if it's not the stock ESC. It's also more convenient for when i want to program the ESC. I don't have to fuss with wires and worry about wearing out a lead or something playing with it. You just reminded me i need to edit my build log with this info.

Now let me just tell you how to "fool" the 2702V into throttle end point programming using the first throttle port. This works for my two different model Hobbywing speed controllers. I'm not sure of the method used to program end points on the Castle Ice. For the HW ESC you just need to leave the throttle in the UP position while binding, wait for indicator then move the throttle down. Though there is no reason to do this ever. But i think it's the same for the ICE? If it's not than this info will only pertain to Hobbywing and maybe some other brand ESC. But again. It's never going to be needed unless your throttle 2 port is broken.

Please be safe and remove your blades or plug the motor in reverse so it will not be able to spin anything but the main gear. Having it plugged in may effect the following, but i am unsure.

First bind up your heli like you would to fly it, with the throttle DOWN, then unplug. For my HW ESC, this step seems to help the ESC recognize the down point's exact position on the TX. Though that could be all in my head. Then put the throttle stick UP and turn on the throttle hold switch. The next part has to be timed pretty close. As soon as the heli starts to bob the swash you need to flip off the throttle hold switch. If done correctly the ESC should enter throttle end point programming mode and then subsequently programming mode if you wait long enough. You should be able to set a proper throttle end point for the throttle 1 threshold. If you check your data logging on each port you will have different numbers. Heliflyer711 did this at one point but i can't find that post.

Help me to understanding your comment on "much prefering throttle response without a govenor". I prefer not having to work around or anticipate power changes by the motor during loading and unloading the rotor. The rotor RPM remains a contant through out the flight in govener mode, makes me a smoother pilot.

This is the process I had to go through to set the throttle end points with the Ice 50 and 2702 RX.
I have never been able to bind with any RX with the throttle full up, the TX will not allow it, it just beeps at you until you lower the throttle to the minimum position, then binding occurs. So from that I cannot set the end points on the Ice.
So...Connected to THRO2 port, I bind with the helicopter RX as normal, then disconnect the battery on the V450, place the throttle in the full up position, plug the battery back in, the RX will bind and the Ice will drop into programing mode allowing me to set the throttle end points. This procedure will only work in THRO2 position, it will not function in THRO1 position. And again if I set the throttle end points up in THRO2 and replug back to THROT1 position, I loose the end points set earlier. So I will hang tough with THRO2.

And yes you will end up with odd data points after setting them but when moving the stick the motor response will match sticks min and max positions very closely which is what we are after. I set the end points several times and got repeatability from one set up to another.

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Last edited by A VIKING; Oct 16, 2012 at 07:09 AM.
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