I would like to add to Kang's comments about the Kibbie drift on Tuesday, the last day of the event. A few hours before F1D Kang's flight (Kang's was made after the end of the official event and award presentations), I attempted several LPP flights also on the west side. The upper drift (called the "jet stream") toward the windows had already started but was not yet as severe as when Kang flew. An LPP, placed up high but near the curtain was not at the ceiling long enough to drift all the way to the west windows. However, once near the west windows on descent, there was a moderate drift into the windows for the whole descent. Not being able to steer, I lost all the attempts to the west wires and girders. I was lucky to get the plane back each time. On previous days, Kang and Steve Brown each saved a plane for me when a flight got caught in an unexpected drift toward the west windows. On other days and usually in the late morning and early afternoon, the upper drift was away from the west windows. Early in the event, Jake lost an EZB to the center scoreboard shroud wires when the fast dirft caught him out and he was not able to steer in time.
My nightmare Kibbie senario is ten F1D's all flying at the end of the last day in similar conditions with all needing a steer and replacement towards the east every few minutes. Perhaps this would be good practice for future Belgrade events.
Leo
--- In Indoor_Construction_at_yahoogroups.com, "Yuan Kang Lee" <ykleetx@...> wrote:
>
> > So the flight that went about 20' higher was not as long as
> > the lower flights. Were you able to identify what to attribute
>
> Gary, I just realized that I didn't answer your question. You were asking about the flight that was significantly higher that flew at the ceiling.
>
> This high-ceiling flight ended at 23:00 when the prop was damaged after a steer. At the ceiling, the drift was stronger, and I had to steer the model every 2 minutes or so. I made 5 steers, all good, but on the last steer, three prop ribs on one blade were knocked loose. The prop wobbled and tucked under the wing soon after. This flight would likely have been the longest.
>
> The reason this flight was higher was because the motor was slightly thicker. In addition, I launched at a slightly higher torque than the other flights.
>
> Sorry for the first answer.
>
> --- In Indoor_Construction_at_yahoogroups.com, Warthodson@ wrote:
> >
> >
> > Kang,
> > So the flight that went about 20' higher was not as long as the lower flights. Were you able to identify what to attribute that to (bad rubber, different size motor, etc.)?
> > I read about what you did with the left over airplane parts, I was asking what you did with the left over cat parts. Just kidding, I like cats, most of the time. My cat Wart claimed one of my planes by "marking" it.
> > Gary
> >
> >
> > -----Original Message-----
> > From: Yuan Kang Lee <ykleetx_at_>
> > To: Indoor_Construction <Indoor_Construction_at_yahoogroups.com>
> > Sent: Mon, Jul 16, 2012 7:48 pm
> > Subject: [Indoor_Construction] Re: Kibbie Dome videos
> >
> >
> >
> >
> >
> > Hi, Gary,
> >
> > The 32:00 flight topped out at 125'. The 32:39 flight topped out at 120'. Neither came close to the ceiling, which is 140 to 145'. The video is deceivi"marked"ng in that respect.
> >
> > However, in the last one minute of the video is a flight that came within 5 feet of the ceiling. You can hear me saying that I might balloon it down.
> >
> > My evil cat, Brandon, left me an EZB wing tip that became the F1D's fin.
> >
> > -Kang
> >
> > --- In Indoor_Construction_at_yahoogroups.com, Warthodson@ wrote:
> > >
> > >
> > > Kang,
> > > Did you ever hit the ceiling in that video?
> > > What did you use the left over cat parts for?
> > > Gary Hodson
> > >
> > >
> > > -----Original Message-----
> > > From: Yuan Kang Lee <ykleetx_at_>
> > > To: Indoor_Construction <Indoor_Construction_at_yahoogroups.com>
> > > Sent: Mon, Jul 16, 2012 1:01 pm
> > > Subject: [Indoor_Construction] Re: Kibbie Dome videos
> > >
> > >
> > >
> > >
> > >
> > > Here's a video of my and Tim Chang's F1D. It's a 5-minute video, so enjoy it over a coffee break.
> > >
> > > Take note of the aerodynamic lessons in the background from Professor Leo.
> > >
> > > The fin on my F1D is a EZB wing tip. It was the only part leftover from a EZB wing that my cat, Brandon, got a hold of. I used the left over wing tip in order to save time. The fin is 4.5" tall by 3.0", and and at first it looked really goofy to me. But it's grown on me since. What do you think?
> > >
> > > The stab of the F1D is also a left-over EZB part. I have a couple of EZB wings with covering torn off. After some quick calculations, I found that the EZB wing requires a similar load as the F1D stab. I cut each of the three ribs in the middle and lengthened them by adding an extension stub. The finished stab is not nicely elliptical, but it saved me a lot of time. From start to finish, the conversion took me 35 minutes.
> > >
> > > Enjoy.
> > >
> > > -Kang
> > >
> > > http://www.youtube.com/watch?v=EZWb4CPIKwM&list=UUE8P5FXrNn7iDqkuPoxeCBg&index=1&feature=plcp
> > >
> > > --- In Indoor_Construction_at_yahoogroups.com, Jake Palmer <82.jake@> wrote:
> > > >
> > > > I posted a couple quick videos from the Kibbie Dome on YouTube. I've also
> > > > got some pictures that I'll get online soon.
> > > >
> > > > http://youtu.be/0-kxmzPuCNs
> > > > http://youtu.be/BgDuyDvbAuY
> > > >
> > >
> >
>
Received on Mon Jul 16 2012 - 21:01:43 CEST