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Robbe › Throttle Curve settings - I'm confused!
10-19-2004 12:55 AM  13 years agoPost 1
Heli431

rrNovice

Hertfordshire, UK

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I'm a real beginner here and getting rather confused by different info regarding the desired throttle curve settings. I only have a 3 point setting on my TX, and I'm running an Aveox 1406/2 brushless with Aveox controller. That means no governer mode (which everybody else seems to use!). Pitch curve is about 0 degrees at low stick, 5-6 deg at mid and about 10 at high stick (not that I've ever gotten there yet!!). Head speed is about 1400 at lift off (just over mid stick) and just over 2000 at full stick (with everything held firmly down on the bench !).

It appears that consensus opinion is that one should aim for a fixed RPM and let the pitch variation control altitude - am I right here?

Currently my throttle curve is 0%, 60%, 100%. The instructions for my ESC say that I should aim to run at 100% all the time (presumably this reduces heat?), but since you have to be able to have zero throttle somewhere (not least to allow the ESC to arm) should I be aiming for a throttle curve closer to 0,90,100 or even 0,100,100? Presumably I might need to drop the pitch curve a bit then to maintain a hover at mid stick position? Seems like a couple of degrees of negative pitch at low stick might be useful to keep things on the ground while winding the revs up, then 5-6 degrees mid pitch for hover and +10 at the high end?

Also, people talk about idle up settings - My TX has one but only refers to using it to set an idle throttle for auto-rotations? Do I infer correctly that you use the normal throttle mode to power up and lift off, then switch into idle up mode to keep a fixed throttle setting for flight whilst allowing full pitch control?

All help appreciated! And sorry if these seem like stupid questions!I'm totally hooked on this, but it can get very confusing and most of the books available are still very much oriented towards gas-powered setups.

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10-19-2004 05:48 AM  13 years agoPost 2
askman

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willamette valley,​Oregon

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looks like you have no governor mode and 3 point throttle/pitch curve and 1 idle up. the way I would set it up, is 0, 60,100 throttle with pitch curve to give you 35, 50, 100 (if you have -10/+10 setup, this will give you -3 to 10 degree) with idle up 1 setting of 100, 60, 100 throttle with 0, 50, 100 pitch (to give you full -10 to 10) . You could possibly make the 60 higher at least in idle up 1. since you have no governor, rpm will vary a lot with pitch change, and you want constant rpm, so you may have to play with the middle percentage a bit that is about best you can do with your setup. frankly with electric, you don't need autorot with throttle hold anyway. (i have it setup on mine with throttle hold setting)

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10-19-2004 03:17 PM  13 years agoPost 3
Elmote

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Los Angeles

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Askman

(you don't need autorot with throttle hold anyway)

Just curious, how do you practice autos without throttle hold? Also, after hard and painful experience, I like to switch into TH when I make my motor connection (running w/o bec)

Elmo Te

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