Bug HLG

Archive of the Yahoo! Groups mailing list for the Bug hand-launch glider 2002-2018

From: "bob_chiang2" <rhc3@...>
Date: Thursday, September 19, 2002 12:42 PM
Subject: Re: Gyro for discus launching?
Hi John, I thought about mounting the horizontal stabilizer with screws or something, but didn't on this one. The vertical stab is slotted to mount on the fuse boom closer to the centerline, the horizontal stab is glued to the pylon, and the pylon glued to the boom. This was my first bug, and I built it with the cruciform tail. I haven't tried a v-tail bug. The v-tail might be lighter, but from what I've read, the cruciform is better for side arm launching: less stress imposed on the fuse, and straighter launches. -BC --- In BugHLG@y..., "John Gospodarek" <John.Gospodarek@i...> wrote: > Bob, did you make your tail detachable? I can't tell from the > pictures. Do you like the new tail better than the V-tail? Thanks. > > > > --- In BugHLG@y..., "bob_chiang2" <rhc3@c...> wrote: > > Hi Colin, > > > > I wish I could build with composits as you do. Your carbon Bug is > > beautiful. > > > > The crashes were much easier to repair than I expected. When I > left > > the field after the Zagi collision, I half expected to build a new > > wing. When I figured out what parts needed to be replaced it > wasn't > > so bad. It took one evening of cutting (and much pondering) and > one > > morning of gluing. I have been very impressed with the strength of > > the built-up ribs and the Bug wing. > > > > I did use your patterns for the tail. Thank you! All that I > changed > > was to increase the percentage of the movable areas. I don't know > if > > I needed to, but I remember reading that deflecting a larger area a > > smaller angle results in less drag. I put the horizontal stab on a > > pylon so the control horn would be in line with the fuse boom and I > > could run the pushrod within the boom. And I mounted the vertical > fin > > as close to the centerline of the fuse boom as I could while > allowing > > room for the pushrods to exit the tube. > > > > With the cruciform tail it does launch straight with no presets. > When > > you get your carbon Bug repaired, I'd suggest you try it without > the > > gyro. > > > > Bob Chiang > > Ithaca, NY USA > > > > --- In BugHLG@y..., "Colin Bosch" <colin.bosch@m...> wrote: > > > Bob, > > > > > > Love your lace wing! Sorry to see your crash photos. > > > > > > The tail you used looks a lot like my carbon Bug. Did you use > those > > > patterns? Did you change anything? > > > > > > I'm curious about your lauching be straight without a gyro. Are > you > > > getting straight launches without any presets? > > > > > > --Colin-- > > > > > > --- In BugHLG@y..., "bob_chiang2" <rhc3@c...> wrote: > > > > --- In BugHLG@y..., "Dan" <danstrider@a...> wrote: > > > > > Everyone, > > > > > > > > > > I know that Colin used a gyro on his Bug for stability during > > > > > launch. I was wondering what gyros, if any, you all are > using > > > and > > > > > their weights. > > > > > > > > > > Colin, I'm curious to see if a gyro is worth the weight for > the > > > Bug > > > > - > > > > > - is launch performace really affected by the gyro? Might it > be > > > > > possible to manage without the gyro? My control rod setups > are > > > > > never rigid enough to get rid of slop, so do you think that a > > > gyro > > > > > would even matter is this case? > > > > > > > > > > Thanks, > > > > > Dan > > > > > > > > Hi Dan, > > > > > > > > I've never flown with a gyro, so I don't know what they are > > capable > > > > of. With a cruciform tail, my Lacewing Bug side arm launches > very > > > > straight. Sometimes it would go up too steeply, and sometimes > at > > > too > > > > shallow an angle (due to my launch inconsitencies), but I > cannot > > > > remember a launch that didn't go straight out. I can't comment > on > > > > launching or flying a v-tail. > > > > > > > > When I was flying a Little Nipper, I did get launches that > tended > > > to > > > > curve. I used a slight amount of right rudder trim to launch, > > > > corrected with the stick as it slowed down, and then retrimmed > > when > > > I > > > > had time during the flight. > > > > > > > > -Bob Chiang > > > > Ithaca, NY USA