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Electric Stunt => Gettin all AMP'ed up! => Topic started by: Brian Courtice on January 14, 2022, 08:33:44 PM
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Is there a plan and/or a build article for this nice looking foamie stunt trainer anywhere?
https://www.theparkpilot.org/ControlLine0208
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Looks pretty simple to just cut by hand. Our local FF club which 50% are also part of our local CL club have secured an indoor flying sight and I have finished cutting several of Igor Burgers Indoor GeeBee models. We are going to be doing lots of flying soon. I'll post some information on our activities when that happens including a build thread.
Igor's model
https://stunthanger.com/smf/gettin-all-amp'ed-up!/early-christmas-)))))/
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I think I could draw a plan from that picture. Is that about 250 sq in?
Motorman 8)
Yep it should be pretty simple to copy. . All I really need is the wingspan and specs on the motor.
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Yep it should be pretty simple to copy. . All I really need is the wingspan and specs on the motor.
Or maybe send Bob a PM. He's a nice guy to talk to and is super helpful. If he has a pdf of the plans, he'll likely send it to you.
I just sent him an email.
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Thanks Bob!
I'm not surprised to find out that Dick Sarpolus had something to do with it. Everything Dick designs is simple, elegant, good looking, and perfectly suited to it's intended purpose.
I can probably manage to sketch up something pretty similar.
If you wouldn't mind, could you measure the wingspan, and have a look at exactly what motor was used?
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A quick google search for "Dick Sarpolus 1/2A" yielded an article for a very similar R/C design by Dick (with a PDF) for a blue foam version.
https://www.theparkpilot.org/akro
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Brian,
If you want something a little bigger here are the plans for an Aussie design call the Yardstick. It is a flat plate wing around a 15 -19 size engine and would also be a great electric.
Best, DennisT
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Plans for that model should still be available from the AMA plans department. If not, I have a PDF of it. Please check with AMA first because it is their property.
Later - Bob Hunt
Do you recall what the name of the model is, so I can search for the plan? Thanks again.
Later - Bob Hunt
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I think I may have I found it.
The AMA plan is called the Foamy Skyraider.
The planform is different but the construction looks the same.
There is a free copy of the construction article here:|
https://plans.modelaircraft.org/wp-content/uploads/pdf/MA00980MA1.pdf
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Brian,
If you want something a little bigger here are the plans for an Aussie design call the Yardstick. It is a flat plate wing around a 15 -19 size engine and would also be a great electric.
Best, DennisT
That looks great. I think I want to start with something a little smaller.
I've been an R/C flyer for almost 50 years, and I have tons of unused electric gear laying around.
Haven't flown control line in many years. I want something small and cheap to start out as I fully intend to destroy it learning loops eights and inverted flight as quickly as possible. :) I'm a pretty advanced 3D pilot, so we will see if my R/C skills will help me learn faster.
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I have np doubt that the airplane you are looking at is everything that Bob says it is and does, and has the advantages that electric can bring to the table for learning the pattern. But you have to ask yourself, is that all you want to do with it??
I volunteered at the KidVenture C/L circles for 16 years and about half way through that run, we were starting to run out if airplanes that could take the Timex Test, take a licking and keep on ticking! Bob Arata and I used to spend the long ride home talking about what to design and build, and the first thing that came to my mind was, I did NOT need to be capable of stunting, and that it had to survive a one point, Lawn Dart Landing in the hard ground at Pioneer Airport! We also decided that as few parts and components as possible were from the hobby shop because they are quickly vanishing from the face of the earth, but Hardware and Building Supply Stores are all over the place. We came up with our TuffBaby trainer that was built from Core-Plast plastic, yard sticks, and bamboo BBQ skewers and is designed as a Primary Flight Trainer. You can probably find out a lot about it by searching the forums here because I know I have typed out the story many times, and the plans may be in one of those threads, and if not, PM me and I will send them too you. The TuffBaby or (Tough Baby) was first introduced at Oshkosh in 2010 with 5 models and I think at least 4 of those are still in service, with the 5th once having had the flying surfaces replaced, which is one of the primary features of the airplane. It has a more or less indestructible fuselage with rubber band mounted engine (Norvel .061 ) and the flying surfaces are sandwiched in between the top and bottom of the fuselage and held together with four 4-40 screws. The airplane has some weight to it, which is desired in the winds they fly in at Oshkosh and also helps with line tension. It's not the prettiest airplane you ever saw but the beauty of it is that you could make it look like anything you want if that is desired also. It does have an IC engine but the Norvel is as tough as an anvil, and would restart with a small electric starter in an instant. The glow plugs are the toughest I have ever seen also. This airplane will stand up to the Timex Lawn Dart Test!
Larry Renger and the crew from The Knights of the Round Circle came up with a neat looking electric trainer that is also built with Core-Plast plastic called the ET-1. Our club is going to build up a few of these this winter/spring. It's an electric pusher design that gets the motor and prop away from the nose on those inevitable crashes, and has tricycle landing gear for pavement take offs. The interesting feature of this airplane is they control the motor speed by radio from outside the circle. This has the advantage of this is to control the flight speed of course, and also the flight duration and if need be, cut power on a crash. This airplane is also just intended as a primary flight trainer and Larry and the Knights have had lots of success with it. I think you can probably find plans posted in a thread also. If not I have those also
So in short, like any job you have to do, you usually make sure you have the right tool for the job! If it's primary flight training, choose accordingly. If the pilot can competently fly the airplane is comfortable in moving on to a more maneuverable model, then the Skyraider or something like it is the obvious choice. Each pilot is different and it can vary how soon they are ready t move along. Above all, have some fun with it!
Type at you later,
Dan McEntee
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Thanks for the input. I appreciate it.
I did get a chance to try flying a basic electric control line trainer at the Joe Nall r/c event not too long ago.
I was immediately comfortable with basic circles, climbs and dives, and a simple wingover. I was tempted to try a loop, but it wasn't my airplane. I don't think I'll need to start with a primary trainer. I also might be wrong about that. :)
My idea is to build something stunt capable that requires as little time or money invested as possible, and just go for it.
When I fly R/C I can fly inverted harrier circles, low to the ground rolling circles, inverted low passes, low level knife edges, etc.
I'm not fooling myself into thinking there won't be a steep learning curve transferring to control line, and I plan to crash/repair/repeat as needed.
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Thanks for the input. I appreciate it.
I did get a chance to try flying a basic electric control line trainer at the Joe Nall r/c event not too long ago.
I was immediately comfortable with basic circles, climbs and dives, and a simple wingover. I was tempted to try a loop, but it wasn't my airplane. I don't think I'll need to start with a primary trainer. I also might be wrong about that. :)
My idea is to build something stunt capable that requires as little time or money invested as possible, and just go for it.
When I fly R/C I can fly inverted harrier circles, low to the ground rolling circles, inverted low passes, low level knife edges, etc.
I'm not fooling myself into thinking there won't be a steep learning curve transferring to control line, and I plan to crash/repair/repeat as needed.
Hi Brian;
Like I mentioned, everyone is different when it comes to control line flying. It's my opinion that the only thing R/C can prepare you for is anticipating control responses. Control line flying is so much more close in and it seems like thing happen faster.Your brain is directly connected to the airplane by your hand and lines so things happen right now. When you are flying the R/C maneuvers, are any of those augmented by transmitter presets? There isn't any of that flying C/L stunt. When I explain what my attraction to C/L stunt is to people, I tell them it's as close to what it's like flying an airplane as you can come and still have your feet on the ground. So, you know more than anyone what you might be ready for, so, like you said, go for it!! And most of all HAVE FUN WITH IT!
Type at you later,
Dan McEntee
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That looks great. I think I want to start with something a little smaller.
I've been an R/C flyer for almost 50 years, and I have tons of unused electric gear laying around.
Haven't flown control line in many years. I want something small and cheap to start out as I fully intend to destroy it learning loops eights and inverted flight as quickly as possible. :) I'm a pretty advanced 3D pilot, so we will see if my R/C skills will help me learn faster.
I am willing to bet that a lot of your skills will transfer, especially the most important one (to me anyway) of not having to think which way to move the controls upright or inverted. You have been doing that on two plains simultaneously, now you will only have to do it on one. :) The one you will miss the most is throttle. You can't power yourself out of a jam. :(
Ken
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That looks like a really fun little plane!
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Thanks Bob!
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I have the full scans of the Park Cat article if anyone wants it. It's too large to post here. Send me your email in a private message.
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Yes please!
courtice61@gmail dot com
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Thanks to everyone who provided me with everything I asked for and more.
My build has begun.
I may have tweaked the planform just a little bit... :)
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Almost there.
Dollar store foam (paper removed).Scrap wood, a few carbon flats, and some glass filament tape.
My Brodak order (timer, bellcrank, leads, etc) is due to arrive tomorrow.
I'll find out if this (and I) can fly any day now.
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Almost there.
Dollar store foam (paper removed).Scrap wood, a few carbon flats, and some glass filament tape.
My Brodak order (timer, bellcrank, leads, etc) is due to arrive tomorrow.
I'll find out if this (and I) can fly any day now.
You shouldn’t have any problem flying it. Hardest part is hand launch if you’re flying off long grass. Just remember to keep the wind at your back during maneuvers. This helps keep line tension which is very important. I’ve let several of my RC friends fly my CL stuff with nothing more than a little verbal instruction. They have all been successful.
Good luck, Matt
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Eight minutes of airtime on the first model so far. Doing loops and figure eights already!!
(My wife thinks the whole concept of "string planes" is hilarious.)
Loop de loop People!
https://www.facebook.com/brian.courtice/videos/661783248301370
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Bravo...!!