Comet Stinson SR-7 RC.wmv

A short video of a 25" span Comet Stinson Reliant SR-7 that has been converted to an electric powered radio control model. It uses a motor and gear drive from a ParkZone Micro P-51, a single 150 mah Lipo battery, and a Specktrum AR6400 that provides throttle, rudder, and elevator control. The video was taking late in the day so the light level is on the low side.

Category:

Autos & Vehicles

Tags:

• model vehicles
• airplanes

[ab4op]

Thanks for the quick reply. I thought you used magnets, but then I figured that they would be too strong when you tried to pull them apart and damage the control surfaces. That's a brilliant idea. I'll try using them on my next micro scratch build. I visited your web site. Great site for all flyers, thanks for putting the site up.

Bill

[PARModels]

@ab4op - To avoid the problem you mentioned I glued stops on the pushrods. They are back from the magnets just far enough to allow for full control movement. When the equipment tray is pulled out the pushrods do pull forward. The stops hit the forward pushrod supports and stop movement of the pushrods. The magnets then seperate quite easily. The holding force is way more than is necessary to keep the joint together during flight.

[ab4op]

Great conversion. How do the servos connect to the rudder and elevator since you can remove the servo/receiver section to connect the battery? Your little pull out setup is great. I did something similar with a C02 setup I used on several peanut airplane bodies and just switched from one to another plane while at the flying field. Thanks for posting, I'm going to try this on an old Comet Thunderbolt kit I haven't built yet.

[PARModels]

@ab4op ab4op - Thank you for your kinds words regarding the converted Comet SR-7. The servos connect to the pushrods using 1/8" diameter by 1/8" thick rare earth magnets. When the equipment tray is removed the magnets seperate. They reconnect when the tray is placed back in the model.

[themushas]

Awesome! I saw that model and I want to but it and make it an rc. I have a balsa/tissue paper cessna with a 24" wingspan that I want to convert to an electric rc plane and seeing your video, it really made me want to Try it out! Thanks! And great job! I love how you said what kind of battery and motor and everything you used so since I'm not that experienced with rc it helped a lot!

[PARModels]

@themushas - I am glad to hear that the information about my Comet SR-7 conversion has been useful to you as you work on your 24" Cessna project.

[SpreadingTruths]

You are the Master. I bow down to your greatness. It flies like a dream. It must be very satisfying. That plane looks good enough to eat, like a delicious cake. I wish there was a free flight school and you could be my teacher.

[PARModels]

@YourFriendlyMe I made a mistake in the web site URL. Please use parmodels not parmodel.

[PARModels]

@YourFriendlyMe Visit my web site at parmodel.com. Go to the downloadable plans section and select the CAD drawn Comet plans. The plan package for the Comet Stinson SR-7 includes an illustrated fuselage building guide.

[YourFriendlyMe]

@PARModels how did you create the fuselage?