Free Flight Jet models.

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Re: Free Flight Jet models.

Postby WIDDOG » Sun Jan 05, 2014 1:23 am

I did see this video on RDF rubber duct fan powered model airplanes. http://youtu.be/PSWVOkaLaPs.

I'm going to be attempting a rubber powered pusher prop set up on this build.
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Re: Free Flight Jet models.

Postby WIDDOG » Mon Jan 06, 2014 11:20 am

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Well I have been able to get some framing done on the A 7 Corsair ll. So far seems like it just might work but who knows I still have along way to go. The wings will requires a Anhedral.
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Re: Free Flight Jet models.

Postby WIDDOG » Wed Jan 08, 2014 3:58 am

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I got the rough framing started on the stabilizer.
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Re: Free Flight Jet models.

Postby WIDDOG » Wed Jan 08, 2014 11:10 am

Rudder rough framed.

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Re: Free Flight Jet models.

Postby WIDDOG » Wed Jan 08, 2014 9:05 pm

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I noticed that Hobby King now sells brand new Cox .049 motors and accessories. Wow. I have my ole .010 Pee Wee motor, I dug it out of storage. I may try to incorporate it into a FF Jet project in the future.
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Re: Free Flight Jet models.

Postby WIDDOG » Thu Jan 09, 2014 4:43 am

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Got some parts covered. Starting to look a little bit more like a Jet.
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Re: Free Flight Jet models.

Postby davidchoate » Thu Jan 09, 2014 9:27 am

is that .010 cox a dUcted fan thing?
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Re: Free Flight Jet models.

Postby WIDDOG » Thu Jan 09, 2014 11:01 am

I have a dream to get the Guillow's kit F 14 Tomcat to fly. This whole thread is about that dream. I honestly don't think it can be done but i'm going to try anyway. I think that a Cox motor maybe could fly the F 14. At the moment i can't say it could not.
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Re: Free Flight Jet models.

Postby David Lewis » Thu Jan 09, 2014 2:07 pm

You might consider scaling up the plans. Even a small decrease in cube loading and increase in Reynolds number boosts performance and will make it easier to fly and more crash resistant.
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Re: Free Flight Jet models.

Postby WIDDOG » Thu Jan 09, 2014 9:44 pm

Picture of my A 7 with Pusher Prop. Still have a long ways to go but is coming along.

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Re: Free Flight Jet models.

Postby davidchoate » Sun Jan 12, 2014 5:15 am

anything can be done if you dont give up. yuo can find a way. probably fail a million times first, but eventually..... I still can't land an RC plane in one piece, but I aint gonna stop destroying them til I learn!
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Re: Free Flight Jet models.

Postby WIDDOG » Sun Jan 12, 2014 8:33 am

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Thanks David for the advice.

I decided to try and finish this "Build". I'm not doing this to get Guillow's to make a new kit. What I hope to do is get them interested in printing plans sheets. If/when I finish this Build I plan on sending a picture to Guillow's Model Pictures.

I used to think I had an interest in RC model airplanes. After smashing up a few RC planes. I realized that what I really liked was Free Flight much better. I'm not trying to put down RC it's just my preference is in Free Flight. I don't know, when the weather is bad, I enjoy flying micro RC helicopters in my basement.
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Re: Free Flight Jet models.

Postby WIDDOG » Tue Jan 14, 2014 9:54 am

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I finished the A 7 today. AUW (All Up Weight) 24.5 g. The decals are tissue copies of the Guillow's F 14 decals. First nice day I will take outside and hopefully fly her. I am going to send a picture to Guillow's who knows maybe they may have an interest in this model.
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Re: Free Flight Jet models.

Postby kittyfritters » Tue Jan 14, 2014 11:20 am

Looking pretty good for a quick, ad hoc build. 25 grams is a bit heavy for a peanut sized model, but I have seen peanuts weighing twice that fly. You might want to trim down that rear plug since it looks like a built in dive brake. David Lewis' suggestion of scaling up the plan is good. I think this will be much easier to trim with about twice the wing span and not much more weight. Having done a couple of rubber powered jets, recently, I've begun to realize just how much fun these things can be. Good luck with your flying.

Howard
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Re: Free Flight Jet models.

Postby WIDDOG » Tue Jan 14, 2014 6:08 pm

Thanks everyone for the great advice on this build. Weather permitted some backyard trimming. i.e. 100 winds or so. Model had a terrible spiral. I was able to straighten it out by adding some balancing clay to the wing. Way too early to tell but I'm still hoping will fly.
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