Re: A perfect 1/4 motor F1D flight

From: John Kagan <john_kagan_at_hotmail.com>
Date: Wed, 08 Jun 2011 19:01:38 -0000

--- In Indoor_Construction_at_yahoogroups.com, "izgo" <izgo@...> wrote:
>
> On 1/4 tests:
>
> What you think about a 8+ minutes flight with quarter motor? I bet is good, but what if climbed too much? Instead is better a 7 minutes flight climbing 7 meters only? or 8 minutes climbing 1/3 of (a tall) site height?
>

Fitting your full motor flight into the available ceiling height is one of the key goals of partial motor testing. It is nice to know that your model could do more time in a taller site (i.e. a 1/4 motor flies to 1/3 altitude), but it doesn't do you much good for the site you are in :)

For a VP, adjusting your high pitch is a good way of controlling altitude, but you usually need to make other associated changes, too - such as increasing the preload to use up the turns that you would have used on the way down from the higher altitude, but not so much that you climb on the spring past where the high pitch left you. It gets nicely complicated :)

You will also want to do the occasional full motor flight to make sure your partial motors are correlating. There are adjustments that you need to sort out to get them to match, such as how much motor weight you allocate for the knot (i.e. should your patial motor weight exactly .150, or .154 (my choice), or even higher?). Your dummy stick should be exactly 3/4 weight and 3/4 length (mine is adjustable so I can dial it in for different stick lengths).
Received on Wed Jun 08 2011 - 12:01:39 CEST