Radio Controlled Soaring Digest May 1987 Issue
Issue Contents:
A design for an inexpensive Ford long shaft starter motor winch are given. Uses PVC pipe.
Many tips on techniques for launching and flying are given.
A flying wing design is shown and is described. 64″ span
Light weight and convenience offered by Radio Shack switching phone jack. Remove plug and turns on radio. With plug in you may charge.
“Pivot” kit and flight performance are rated high. Tips given.Good article by Eric.
Printed balsa models circa 30’s & 40’s to be reissued from CanadaEash Built Models
Martin Simon’s Book Vintage Sailplanes only costs $40 not $48Geoff Pentland
Bobcat by Bob Martin is given good marks for flying ability for beginners. Bob appreciates the Prodigy reviews given earlier.
Photos sent of model whose design appeared in Apr & May of 84.Model to attempt altitude record.
Bud sends photos of a canard design sailplane with other news from Florida.
Dave explains stability trade offs of moment arm
Issue is taken with Andy Lennon’s comments on stability in April 85 issue. When N.P. and C.G. become equal
Specific values for working Horiz. Tail Volume Coeff. and another index gvn Volume coeff. = Stab area * Moment Arm/(Wing Area * Avg. W. Chord) avg=0.41
Jim gives specific recommendations to those with sensitivity to glues/paint Masks offer no protection from vapors. Resporators recommended
A three view drawing of Bob’s Constellation design is shown and discussed. 167″ span
“Algebra” 2.5M sailplane is shown in 3 view drawing8.4-14.4 Oz/ft^2 – Aileron Vers 10.5 – 16.5 Oz/ft^2 Rudder Version
Jim tells the public about his moving to the S.W. USA
Radio Controlled Soaring Digest May 1987 Issue
