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Scratch Built FUNJET contest #2

Old 11-09-2008, 10:24 AM
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CHELLIE
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Default Scratch Built FUNJET contest #2

Hi Everyone Here I am Again, Building another Plane, I Dont know why I have pleanty of airplanes to play with Ok, this will be a Scratch build Funjet, made from 9mm Depron, 6mm Depron and Balsa, it will be powered by a HXT 2835 2700kv inrunner, with a 50 amp esc, 6x4 APC prop, and a 3 cell 2350mah Lipo, the body will be a full body, the wing will be a flat bottom 9mm Depron, with a little airfoil built/sanded into the top, the rudders are 6mm, and the elevons will be a formed Balsa, Hopefully it will look something like the Funjet picture here, wish me luck, Take care, Chellie

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Old 11-09-2008, 11:31 AM
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Originally Posted by Ben D wing View Post
Looking good so far!
Seeing as you are going to the trouble of building a very lightweight airframe, why not see how small a motor and LiPo you can use before using that heavyweight brick of a motor.......HXT 2835 2700kv @ 90+ grammes!
LOL , yes it is a heavy motor, I just have it laying around here, so i thought i would use it in Something I was looking at the 1800kv motor too, Kosh uses it alot, and I would love to give it a try, with a 1300mah 3 cell, here is the motor, Darn, they are still out of stock on this motor, oh well, I saw a video that Kosh had, and I asked Kosh what motor he was using, as the plane was on the larger side, and it was really going fast, I was surprised that it was a small motor, pushing a larger plane so fast, Take care, Chellie

http://www.hobbycity.com/hobbycity/s...ss_Micro_Motor
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Old 11-11-2008, 08:07 AM
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Hi Everyone Its me Again I got a little more done to the FunJet, Its starting to look very nice after I glued up every thing, It Weighs 7oz Yea, just need to install the electronics and do some color trim work to it, here are some more pics, Enjoy, Chellie

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Old 11-12-2008, 04:25 AM
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Originally Posted by Captain_Nifty View Post
Very nice work!

Thank you Captain for the complements I hope it flies well, Take care, Chellie

Originally Posted by Ben D wing View Post
Excellent work Chellie and it looks every bit a F'jet!
Are you sure your scales are reading correctly? Only 7ozs sounds a wee bit heavy for a Depron replica. I would have thought somewhere between 4-5ozs max.
I took the liberty of weighing the parts of my last F'jet before I assembled it and the total was 6ozs, the only none standard part was the carbon spar. Here's a break down using 1 gramme scales:
Wings = 44g
Fins = 8g
Complete fuz and motor shroud = 100g
Carbon spar = 8g. Standard is a whopping 20g!
Canopy catches and horns = 4g
Pushrods and Ezee connectors = 4g
Servo covers = 4g
Total = 172g (6ozs)

Anyway, are you going to cover it with glass cloth and WBPU, or something else, as it would be a shame to scratch that lovely looking body of yours on the first outing!
Hi Ben D Wing Thank you for the complement I am just going to add some strips of color tape for looks, The Extra weight may be the 3/8" wood dowel i used for the wing support, I did not have any 8MM CF Tube, so i used a piece of wood, If I remember right, it was only 1 oz, but i think the epoxy i used with the wood support added more weight, I used 9mm depron, so its a little heavier too, I built this one, because i wanted a FunJet Trainer, i still dont feel comfortable with my original FunJet, its just me, It does not fly like my wing does or a delta does, it has its own Style, that i need to get used to

Originally Posted by profilefan View Post
Awesome job! Now where are the plans?
Thank You Thats Going to be the Hard Part I will do my best to get some plans up, after I fly this thing to see how well it does Take Care, Chellie

Originally Posted by WAR MACHINE View Post
Thats very impressive !
If you do it again I would suggest getting the wing CNC or even hot wire cut for a proper section.
Hi WAR Thank you, Yes your right, I have the stuff to make a hot wire cutter, if this one turns out well, I will make one with a better airfoil to it, Take care, Chellie
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Old 11-13-2008, 04:05 AM
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Originally Posted by b1bman View Post
wow very nice work chille if I could hand shape like that I would not have to be a copy cat


I don't know if you all would consider this a scratch or not but this is what I have been working on for a few weeks a all carbon fiber funjet why you mite say well one off my buddies got one going so fast the wings ripe right off right in front of use and that was at 3/4 throttle and being speed freaks we need to know how fast it can go
Hi B1bman Its nice to hear from you again, Thank you for the complements, where have you been hidding at Nice job on your FunJet, I dont think I will fly that fast, where i rip the wings off Good luck to you on you Build, Take care, Chellie
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Old 11-14-2008, 06:08 AM
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Originally Posted by WAR MACHINE View Post
Was that 4S ?
Ive got a 1509/1Y planned for my FJ

Sorry for the hijack CHELLIE
War, You can hijack my thread anytime you want to and that goes for others too it just makes things more interesting IMHO, Take care, Chellie
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Old 11-14-2008, 06:39 AM
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Originally Posted by WAR MACHINE View Post
You a bit of a night owl - whats the time there now ?
Hi Its only 10:40 PM here
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Old 11-16-2008, 10:27 AM
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Talking All Done Yea

Hi Everyone Its Done Yea, I put in a 2408-21 TP motor for now in it to test it with, I need another 40 amp ESC, for the 2835 motor, so it will get a BP21 for now, I cut a 7x6 SF prop down to a 6x6, and I am using a 1300mah 3 cell lipo 20C, with a 30 amp esc, 2- 9 gram HXT 9 gram servos, The AUW is 16.9 oz , Not to Shabby the motor draws 14 amp WOT, and 155 Watts Static, but that should unload in the Air a Little, I Hope Wish me luck, it will be maidened today, here are some finish pics, Enjoy, Chellie

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Old 11-16-2008, 11:38 PM
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Originally Posted by Ben D wing View Post
Chellie, that is truly spectacular! Good to see a bird with a trim, light chassis! I just wish I had thought of making a tapered jetpipe for my lightweight F'jet, it looks a lot better than the original. ( BenD scurries off to the workshop, Depron in hand......)
Question: In the pics it looks like there is no reflex on the inner T/E's or the elevons. Is it an optical illusion, or have you dialled some in?

Hope the maiden goes well!
Hi Ben The maiden went good and bad it flew, but i messed up

Originally Posted by idealhobbies View Post
Good luck Chellie. That looks great.
Hi Ideal It flew, but it was not my day




<HR style="COLOR: #d1d1e1; BACKGROUND-COLOR: #d1d1e1" SIZE=1> <!-- / icon and title --><!-- message -->
Dang Stupid Pole got me today I maidened my Scratch built fun jet, on the first try, too much down thrust, the jet nosed in, very little damage, corrected the thrust, gave it a little up thrust, and it flew, but the CG was off, a little tail heavy, I had my hands full, but got it into a nice landing glide, left to right, Forgot about the Stupid poles that are on the right side of the field and thump, wing hit the pole, if fell down and snaped the fuse in half, and the motor burned up, nice smoke Oh well, it did fly new 2408-21 motor on order and some more props, oh yea, i broke a prop too thats my second time hitting a pole, it will fly again, just need to glue the fuse back together, and patch a small section in the wing, and it will be ready for battle again Take care, Chellie
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Old 11-16-2008, 11:41 PM
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Originally Posted by Ben D wing View Post
Chellie, that is truly spectacular! Good to see a bird with a trim, light chassis! I just wish I had thought of making a tapered jetpipe for my lightweight F'jet, it looks a lot better than the original. ( BenD scurries off to the workshop, Depron in hand......)
Question: In the pics it looks like there is no reflex on the inner T/E's or the elevons. Is it an optical illusion, or have you dialled some in?

Hope the maiden goes well!
I just dialed some in with the radio the tappered jet pipe is a styrofoam cup, that I cut out the bottom and leanth, and hot glued in place, Take care, Chellie
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Old 11-18-2008, 03:37 AM
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Originally Posted by Ben D wing View Post
A styrofoam cup, of course! Why in h*ll didn't I think of that!!!! It's just too obvious.:o
I rolled my own from 3mm Depron and coloured it with a permanent marker pen. It wasn't exactly the easiest job I've done with Depron, but it looks good 20 feet away.

Sorry to hear of the disaster, but pole dancing is quite a skilled affair (so I've been told ) and it looks like the Funjet misjudged it's own abilities!
Good luck on the rebuild.
I had my Hands full and I got it in a nice landing pattern, then tumb Oh well, about 1 hr work and it will be fine again, its not that bad
I am going to try to make an adjustable motor mount, so I can get a fine adjustment on the motor thrust, something like the original Funjet comes with, that should help alot, its almost there, besides, these planes fly better after a mishap I used some acrylic paint to paint the motor cone with, just used a paint brush to add the color with, anyway it flies, and it was fast 2 new motors on order and some more props, Take care, Chellie
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Old 11-19-2008, 04:08 AM
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Originally Posted by starcad View Post
Bummer Chellie, I really hate it when those stupid poles reach out and grab model planes. Sorry to hear about the F'Jet that is really one good looking model. It really needs to get back in the air again, let us know.
Originally Posted by Crashalott View Post
Hey there Chellie, nice build on the Funjet and sorry about the Pole Bashing.
Better luck next time.
Crash

Hi Starcad, Hi Crashalott it will be back up in the air this weekend My Planes Die a Long, slow, death, when they are to heavy from repairs, then they are retired to the round file, Take care, Chellie
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Old 11-19-2008, 04:37 AM
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Originally Posted by fr4nk1yn View Post
I think this is the first full fuselage I've seen you build (:
And a nice one at that. Video this weekend?
Hi Frank its my 3rd full fuselage I built a DR1, it has not been flown yet, soon, and a f111, that one I threw out, it was made from foam Board and the swing wings were to weak on it, but i gained a lot of practice making it Take care, Chellie

http://www.wattflyer.com/forums/show...&highlight=dr1

http://www.wattflyer.com/forums/show...highlight=f111



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Old 11-24-2008, 12:19 AM
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Thumbs up Yea It Flies

Hi Everyone Its Alive The FunJet Flies Great, had some motor thrust issues and CG issues with it at first, but got that worked out, it likes 0 thrust angle, and The CG is just a little forwards of the stock Funjet, We flew it with a 2408-21 to test the airframe with, before i put the 2835 2700kv motor in it, with a 6x4 prop and a 2000 mah lipo, I want to thank Jessie & Charlie ( Both are Hot shot Pilots ) for helping me to make this video, Jessie was flying the FunJet & Charlie Launched it, Thanks Guys
Enjoy the Video, Chellie

[media]http://www.youtube.com/watch?v=WLLQM7cXseM[/media]
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Old 11-24-2008, 01:13 AM
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Originally Posted by fr4nk1yn View Post
That looks great in the air. Nice job.
At first glance I thought "Why id Morgan Freeman launching her plane?" (:

I think your about to get hounded for plans now.


Hi Frank Thank you for the complements yea, the guys at the flying field want me to make some kits Now They loved this FJ , Take care, Chellie
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Old 11-24-2008, 01:57 AM
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Originally Posted by fr4nk1yn View Post
That looks great in the air. Nice job.
At first glance I thought "Why id Morgan Freeman launching her plane?" (:

I think your about to get hounded for plans now.
Morgan Freeman owed me a Favor, so he came over to Launch my planes for me Take care, Chellie
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Old 12-10-2009, 05:37 AM
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Hi Everyone Ok I Finally got around to making some plans for this funJet, the fuselage can be tappered/ rounded off / Shaped anyway that you like at the canopy area, I gave the basic shape to the fuselage, the slot for the basswood brace has to go all the way through the wing, use some 2" fiberglass strapping tape from wing tip to wing tip, top and bottom, put the tape on one side first, turn the wing around and epoxy the basswood or cf to the wing, then add the strapping tape to cover the spar, and seal the stinky epoxy fumes in LOL cut out areas for the servos to make them sit flush on there sides, and hot glue them in, Take care and have fun, Chellie
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Old 12-10-2009, 05:47 AM
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CG Location, on mine the CG is 17" back from the nose, or 1" behind the front leading edge of the wing where it starts to tappers/turn at going towards the fuselage.
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Old 12-13-2009, 06:58 AM
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Hi Chellie, it's been a while, but thanks for posting the plans, they're looking very good. I don't think I'll build a full-size one, but I might make a smaller version based on yours if you don't mind. I won't start the build for a few weeks due to the festive season, but as and when I do, I'll start a new thread.
Thanks again for the plans and I wish you and everyone else at WattFlyer a very merry xmas and a prosperous (crash free) new year. Cheers!!

BDW.
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Old 12-13-2009, 08:03 AM
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Originally Posted by Ben D wing View Post
Hi Chellie, it's been a while, but thanks for posting the plans, they're looking very good. I don't think I'll build a full-size one, but I might make a smaller version based on yours if you don't mind. I won't start the build for a few weeks due to the festive season, but as and when I do, I'll start a new thread.
Thanks again for the plans and I wish you and everyone else at WattFlyer a very merry xmas and a prosperous (crash free) new year. Cheers!!

BDW.
Hi Ben Thats what the plans are there for so anyone can scratch build a jet it flies great too, I made this scratch built FJ because I was having a little trouble getting acuainted with the way a FJ flies, the nose sticks way out there, and when you make a flat turn, the nose really drops a lot on these jets, I did not want to fly my MP funjet and wreck it , so I made a FJ trainer to learn with, the FJ flies much different than a reg plane or a wing does IMHO, so i needed to learn to fly this jet, I learned that if you go up before you turn thats the secret to a nice turn, or do a Split S or Immelmann turn, but a flat /horizonal turn will make your blood boil as the jet wants to dip hard down with a big 4 cell lipo in it Happy Holidays to you and yours &
Take care and have fun, Chellie
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Old 01-05-2010, 10:42 PM
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Hi Chellie,
With the motor mounted in the back, did you extend the motor wires or the Battery wires?
Also how did you mount the motor?
If you used a stick mt. how did you mount the stick?
Did you glue it to the wing?
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Old 03-29-2011, 04:33 PM
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So the rain finally stopped and I got to maiden my version of Chellie's FunJet. As you can see by the photo I made a major error in building this. As careful as I was in reading the plans, I made the fuselage at the canopy 4" wide instead of 2" wide! Don't ask me how I did that. I still don't know!

So I started out with a glide test to double check my CG. The last thing I want is a tail heavy on a maiden flight, or any flight for that matter. I've learned that the hard way. So the glide test revealed I was VERY nose heavy. So I slid the battery back, I ended up needing to do this a couple of times. Finally I felt I was ready to go for it, I did some powered on launches and was STILL nose heavy. Finally I got it, and she flew!

Flew pretty much like I expected, very fast glide rate, gotta watch the turns and keep the nose high. Since I had to slide the battery back so far, I need to redo my velcro system to get the battery stabilized better.

For the maiden I stayed with my tried and true 2200 KV Turnegy motor off my F-22, that motor has flown for over a year without fail, so I thought it would be good to use a motor that is used to flying and not crashing. Seemed to work well.

So now I gotta debate and see if I go with a higher KV motor as suggested. This plane is clearly for FAST, not to gently cruise around like you can with an F-22.

Anyway. Chellie thanks for the plans, thanks for the help. So far so good.

Jeff
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Old 03-29-2011, 09:28 PM
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Originally Posted by AirmanAirhead View Post
So the rain finally stopped and I got to maiden my version of Chellie's FunJet. As you can see by the photo I made a major error in building this. As careful as I was in reading the plans, I made the fuselage at the canopy 4" wide instead of 2" wide! Don't ask me how I did that. I still don't know!

So I started out with a glide test to double check my CG. The last thing I want is a tail heavy on a maiden flight, or any flight for that matter. I've learned that the hard way. So the glide test revealed I was VERY nose heavy. So I slid the battery back, I ended up needing to do this a couple of times. Finally I felt I was ready to go for it, I did some powered on launches and was STILL nose heavy. Finally I got it, and she flew!

Flew pretty much like I expected, very fast glide rate, gotta watch the turns and keep the nose high. Since I had to slide the battery back so far, I need to redo my velcro system to get the battery stabilized better.

For the maiden I stayed with my tried and true 2200 KV Turnegy motor off my F-22, that motor has flown for over a year without fail, so I thought it would be good to use a motor that is used to flying and not crashing. Seemed to work well.

So now I gotta debate and see if I go with a higher KV motor as suggested. This plane is clearly for FAST, not to gently cruise around like you can with an F-22.

Anyway. Chellie thanks for the plans, thanks for the help. So far so good.

Jeff
Hi Jeff
First off i think she looks marvelous very nice
Congratulations on the maiden, thats wonderful news
May she bring you much joy in the years to come
Take care dear friend
Yours Hank
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Old 03-30-2011, 01:37 AM
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Thanks Hank. I gotta get a few more flights in on this to iron things out, but so far so good. She does come in fast, one would expect that.

Jeff
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Old 03-30-2011, 01:47 AM
  #25  
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Location: Hesperia, So. Calif
Posts: 19,255
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Originally Posted by AirmanAirhead View Post
So the rain finally stopped and I got to maiden my version of Chellie's FunJet. As you can see by the photo I made a major error in building this. As careful as I was in reading the plans, I made the fuselage at the canopy 4" wide instead of 2" wide! Don't ask me how I did that. I still don't know!

So I started out with a glide test to double check my CG. The last thing I want is a tail heavy on a maiden flight, or any flight for that matter. I've learned that the hard way. So the glide test revealed I was VERY nose heavy. So I slid the battery back, I ended up needing to do this a couple of times. Finally I felt I was ready to go for it, I did some powered on launches and was STILL nose heavy. Finally I got it, and she flew!

Flew pretty much like I expected, very fast glide rate, gotta watch the turns and keep the nose high. Since I had to slide the battery back so far, I need to redo my velcro system to get the battery stabilized better.

For the maiden I stayed with my tried and true 2200 KV Turnegy motor off my F-22, that motor has flown for over a year without fail, so I thought it would be good to use a motor that is used to flying and not crashing. Seemed to work well.

So now I gotta debate and see if I go with a higher KV motor as suggested. This plane is clearly for FAST, not to gently cruise around like you can with an F-22.

Anyway. Chellie thanks for the plans, thanks for the help. So far so good.

Jeff
Glad you got it flying If it wants to torque roll to the left when hand launching, add a big finish nail into the right wing to give it a little more weight, it helps a lot, just push the nail into the wing, from the tip in, hope that helps, Chellie
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