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Archive for July, 2017
Posted by Keith Kindrick | Jul 06, 2017 @ 10:50 AM | 5,603 Views
When I took delivery of this Calypso Cobra it was after months of waiting. It my first attempt at assembling a truly beautiful molded modern F3B sailplane. The fit and finish is still the best I have ever seen. All of the control surfaces have molded wiper surfaces. The wings have C68 carbon over balsa skins. The wings are so stiff with a paint surface that is unbelievable. Each of the trailing edge surfaces are hinged on the bottom using top driven control push rods. This makes the flaps tricky. To achieve a large surface deflection I removed some of the wiper area to gain another 15 degrees in deflection. With a trailing edge that is floating I set it up with the lower surface flat (wish I had a template handy) and then moved the surfaces to the MH32 profile.

All of the prior Mutilplex servos that I installed rather poorly inside the wing have been replaced with MKS HV6130H servos in frames. The original installation with shrink warped servos was removed due to the terrible job I did back in the day. I had no idea what I was doing and it showed. What really blew my mind was how slow the Multiplex servos are. My Stylus radio back then was what caused me to moth ball this sailplane. No matter what I did my programming of it did not match what I thought this Cobra was able to do in the air. Fast forward 25 years to the Spectrum DX18 and I thought I would give it another try. This has been a labor of love to pull this machine out of the time capsule it has been stored in. I...Continue Reading