On Thu, 22 May 2008 19:24:51 +0200, Robert Roland <fake@[EMAIL PROTECTED]
>
wrote:
>I've got myself a T-Rex 450 SE V2. The user's manual and the
>experienced guys say to not use the governor mode which the ESC
>sup****ts. The experienced guys say it's because the ESC gets too hot,
>while the manual gives no reason at all.
>
>The heli flies very well with the throttle at full blast all the time,
>but I can't help thinking I might get a minute or two more flight time
>if I reduced the head speed a little.
>
>Does it make sense to try with the ESC in governor mode, or would I
>risk something really bad?
>
>What other things are there to think about when flight time per
>battery is the subject?
>
>The ESC has different "timing" settings. It is currently at "medium".
>The manual states that "high" would cause more battery drain. Does
>that mean that "low" would cause less battery drain?
>
>There is also a setting for "throttle response". Would that impact
>current draw noticeably?
>
>I realize, of course, that extending flight time will reduce motor
>power, but since that is currently plentiful, a small sacrifice might
>be acceptable.
The Stock Align ESC's governor sucks. It's horrible. You're better
off plugging in a decent throttle curve and leaving it at that.
No need to run the motor flat out all the time. A good curve would
put mid stick at 80% and ramp up to 100% at full stick. This keeps
the headspeed fairly consistent as long as your batteries are up to
the task.
To up flight time, drop in a smaller pinion. It'll ease the load on
the motor at a cost of slightly lower headspeed.
Medium timing on the 430LX motor is fine. I set up all my ESCs with
fast throttle response for those occasional "Oh s**t!" moments...
On my V2 with 430LX motor, 13T pinion, +/- 12 degrees collective pitch
and 8 degress cyclic, with 25C 2200mah packs, I can fly 6:00 mins very
aggressively and still only put back about 1600mah into the packs. I
bet if I dropped a 12T pinion on and knocked back my throttle and
pitch curves a bit, I could get 8+ mins...
There's a "Flight duration" sticky thread on Helifreak in the Trex 450
forum that outlines how to get nearly 20 mins of flight out of one
pack...
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