Main Menu

Jack Lambie Hang Loose

 
Lamb-HG-01
 
In 1972 a guy named Jack Lambie wrote an article for Soaring magazine and published a set of plans on "how to build your own Chanute-style hang glider". He called his design "Hang Loose" (hey it was the 70's ;)
 
 
 
Experience:
When I saw that article, I knew instantly I had to build one. I can remember sketching ideas for such craft since I was in 5th grade. So I ordered the plans Carleton and I built one. On one of the days of testing we happened to get photographed and interviewed by the local newspaper. (I think the reporter was just happening by at the time)
We had to make some changes to the design: for one thing we could not get bamboo to make the ribs. Instead I cut them out of 1/8" plywood, about 1" thick top to bottom and mounted the ends between two pine blocks. Heavier than the bamboo but a better fit to the shape for sure.
 
We also could not get the yellow pine that was suggested and used spruce I think, but it had some very small knots in it that did cause a problem at one point. (Spar failure in flight!)
 
Lambie-HangLoose-01
 
At the time, I already had a sailplane pilot's license (you can solo at 14 and it was cheaper than flying power planes) and of course I had flown a lot of model airplanes, so I was elected the test pilot. You can see me in that photo with my leg out to move the CG (centre of gravity) forward a bit.
 
The angle of the tail was not set properly so I could not get the angle of attack enough and basically just fell down with the thing. After fixing that back at Carleton's house (right across from the field in the picture) it worked great. We both flew it many times down a little 20' grassy drop-off. 
 
The feeling of the glider lifting you up as it gained speed was AWESOME.
 
You could not really turn the thing at all...too much stability in roll. We talked about adding some tip-dragger rudders or ailerons but the flight times were short enough you didn't really need any left - right steering.
 
We had a few snafus but by never flying higher than it was safe to fall we didn't get hurt. Spectators would offer to hook us up to their cars with a rope and and tow us ...but we were too smart for that ;)
 
Lamb-HG-02
 
Lamb-HG-03
 
 
 
 


Copyright © 2019 all-aero. All Rights Reserved.
Joomla! is Free Software released under the GNU General Public License.