Thanks, Mark. Yes, as Bill mentioned, the motor stick weighed 67 mg. I do not measure the deflection on my motor stick, so can't tell you what it is. It's from the EZB motor stick sheets I get from A2Z.
Everything on this EZB is relatively strong. Of course, you have to take "strong" in the right context. For example, the wing and the prop are comparable to other models that weight .4 to .45g, and so are relatively "heavy" for this model. The reason is that I had first planned to build a substantially lighter model, but decided the super light prop and wing were too weak. So I put on the wing and prop from a heavier model.
At Lakehurst and Tustin, this EZB launches with a very aggressive climb, about 45 degrees. Part of the reason is that the prop is stiff, has small blade area and is low pitch. It is probably not the most efficient prop, but it was a good one to start with to get the model to fly 30 minutes.
I built a substantially larger prop, at 13.5" and with bigger blades. And at the same weight of the current prop, this new prop is more flexibly and flaring. You can see it in this photo taken this weekend at Tustin
http://www.flickr.com/photos/44670670_at_N02/5197187809/in/set-72157625443583476/
The air was too erratic this weekend at Tustin for me to do better times. It was mostly too drafty for the light models. At one time Saturday afternoon I clocked a 10:30 1/4 motor flight. But by the time the model came down, the winds shifted and the temperature got colder. Will have to wait until next time.
-Kang
--- In Indoor_Construction_at_yahoogroups.com, William Gowen <wdgowen@...> wrote:
>
> Kang didn't bring a computer to Tustin but he says that motorstick blank
> weighed 67mg.
>
> On Sat, Nov 20, 2010 at 3:47 PM, Mark F1diddler <f1diddler_at_...> wrote:
>
> >
> >
> >
> > I see Kang's clever 30 minute Lakehurst ezb is mapped out in latest INAV.
> > Kang, I saw good detailed sizes, but not a motorstick (6") raw blank
> > motorstick weight (maybe missed it, scratchy printing.) So for those of us
> > who don't mess with 3.5lb wood, what is your weight of motorstick blank,
> > meaning before hooks n tubes, etc.?
> > Well done!
> > Mark B
> >
> >
> >
>
Received on Mon Nov 22 2010 - 14:18:40 CET