The Butler
is kind of a curiosity. I found it in the 1937 Zaic Book as an example
of "how far we had come" since 1912(?). I built a balsa one. The dragonfly
wing is distinctive and pretty in the air. But it is not a contest winner.
Mine will put in 2+ min flights all day though. I substituted balsa
and tissue for the spruce, reed, bamboo and "rubberized fabric imported
from England" that was used in 1912. . I have had some bother with
flutter on the trailing edge of the wing. Build a strong trailing edge
and affix the wing with powerful rubber bands
I have posted a plan in the Twin Pusher plan section .
If you have any interest in old models you should buy the Zaic books.
The
Burnhams are perhaps the most often built SAM twin pusher. It is a fine
example of a late journeyman twin pusher .It is more "manly'' than some
of the single surface Twin Pushers I tend to mass produce, with a covered
under camber, real spars etc. .They fly well and Aerodyne carries the excellent
plan that Jim Noonan used to include in a kit. 32" span.- Aerodyne 1924
Edinger Santa Ana CA 92705 714-258-0805 - He's good people and carries
quite a few plans for different twin pushers. Plus most anything you'd
need.
This is
my SYMPHONY OF OVALS. A 20" span free lance Twin Pusher for the 3rd millennium.
I built it to the local 20" stick model event rules. I have yet to fly
it in competition. It flies OK. It isn't as laterally stable as I would
like. But it looks different and pretty in the air. There never were any
plans.
The Joe Ott Cloud Chaser
The Joe
Ott Cloud Chaser is smaller than most- 28" span(?) They are single surfaced
and build very quick. I replace the bamboo tips with laminated balsa ones.
Or the National Free Flight Association can send you full sized plans for
6 bux cheap http://www.mmb.com/nffs/plans.htm#otr . None of these show
the dihedral of the canard. I use 2" and it works fine.
The Guth
The
Guth is a large over the top twin pusher. It is very light and flimsy.
In a wind, I found it difficult to operate without it breaking something.
But is capable of some amazing times. I was getting very close to six minutes
in evening air, when it flew away.