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T-REX 450 › Curves and what do you think?
09-14-2007 05:02 AM  10 years agoPost 1
Dave_E

rrApprentice

Stanwood, WA

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Hi All,

The light bulb came on yesterday and I figured out the DX6, curves and all. So I get to thinkin, why are all us new guys who won't be flying weird for some time to come...or never, setting our birds up to fly championship 3D? Don't have to if you get a handle on the radio setup and understanding the curves. I've got the new 450S set up so my wife could fly it (figure of speech don't ya know ). Here's my question to you all with lots of tinkering time and battery experience.

It's my thought that the battery will give longer flights and generally last longer if the motor RPM is kept higher and in the "power band" with just enough pitch to do what you need doing. In my case (as well as many others) it's just cassual flying around the front yard.

I've also tuned my radio so the "flight mode" switch doesn't do anything!!! Can't have another stupid accident! Thanks for everyone's feedback in the last week or so. If this line of thinking is really wrong, please say so!

Dave

CHECK 6

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09-14-2007 01:04 PM  10 years agoPost 2
Boidman (RIP)

rrKey Veteran

The Home Stretch

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Don't know your motor, and only have experience with 1 Align, the 430L.

For overall duration under some imagined average, higher motor speed and lower head speed with greater blade pitch is the way to go. Use an 11 toother for duration play. I believe there is a non-Align 10t steel jobber available too, and may eventually try one.

Running the head at 2400 and below can do much for duration, but the tradeoff is that reduced tail rpm comes into play.

I also run a 9t pinion on a motor with a smaller shaft than the 430L, and can enjoy dragging a camera around at 3-5 mph with intermittant hovers, for a good amount of time. Picking up extra weight at lower head speed and higher pitch means more yaw force to overcome with the tail - there are tradeoffs and adjustments required to remain somewhat safe and sane.

The older 450's, before the tail slow-down gears, were/are actually better for slower flying duration, with or without a payload.

So loosely, the highest motor rpm you can maintain, on average, with the lowest head speed and greatest pitch where you can comfortably remain in control, is the ticket.

Do keep in mind that this all is a gentle generalization just slightly swayed towards our 450's and 3500-ish KV motors.

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T-REX 450 › Curves and what do you think?
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