Fidgit 3D an 18" KF plane for UH10g outrunner and 24" larger version - Page 3 - RC Groups
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May 04, 2008, 09:03 AM
I'm not flying backwards!
Tony65x55's Avatar
Thank you, I do. Your ten year old will love it. After he gets the basics on his BB42 he'll be "Fidgeting" in no time.

Your Fidgit is a winner. I think this thread is in for a long run. Congrats.

Tony
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May 07, 2008, 10:25 AM
Registered User

Thanks for the Plans


Thanks, again for the 28" plans. I'll let you know how it goes.
May 08, 2008, 07:54 PM
RC Flyer
Patsy 2 Shoes's Avatar
Hi Richard

I have all the materials on order for the 18" Fidget.I also have all the patterns made and cut out.

Can you tell me the approximate locations of the servos ? I will be using the 3.7 servos, the 350 MAH battery with the 6A ESC.
With the KF wedge to be used on the wing.I assume the top wing skin is flat and the lower wing will assume a fair amount of dihedral .Am I correct about that?

Thanks
Charlie
Last edited by Patsy 2 Shoes; May 08, 2008 at 11:33 PM.
May 09, 2008, 02:44 AM
Parkesflyer
RJPIoW's Avatar
Where you put the gear depends so much on what you use. I fitted the motor and the aileron servo (so that you get the best angle for the push rods as the ailerons move so much) and then I tape on the Lipo, Esc and the 2 rear servos to get the cg where it should be. The KF wing is very forgiving and I set my cg at the rearmost position from the beginning.

If you use the kevlar pull-pull mechanism best set the rudder servo in the fin, and the elevator in the tailplane. The LiPo is fitted through the lower half of the fusalage vertical panel.

I hope the two attached photos help.

Whenever I make up a KF wing I pin the lower panel to a flat building board, then glue on the step, and then glue on the top panel. You then get no dihedral and a tapered section wing

Hope Ive been helpfull.

Richard
May 11, 2008, 12:51 AM
Registered User
What size would you suggest for a 16-17g motor? 20"?
May 11, 2008, 01:10 AM
Parkesflyer
RJPIoW's Avatar
The prototype 24" weighed 164 gms and was fitted with a Komodo 2204-15 running off 2 cells with a 9X4.7

7.4v / 6.8A / 49.4W / 5790rpm / 340gms thrust

So if your motor gives anything like 300gms thrust a 24" version would be great.

Richard
May 11, 2008, 08:38 AM
Registered User
This looks like a great project for me but where would I get the foam?
May 11, 2008, 08:59 AM
Registered User
Richard, the setup for this motor that I have on hand (2s vs 3s) provides 250g of thrust. hitec feather rx, 5g servos, 9g esc. I think larger might be better than the 18 but definitely smaller than the 24.
May 11, 2008, 11:07 AM
Parkesflyer
RJPIoW's Avatar
I predict the parts for the airframe of a 20" might weigh about 32gms. If your running gear can be added to this to give an AUW of about 125 gms then a 20" looks good. Let me know and Ill scale it and publish a 20" version.

Richard
May 11, 2008, 11:09 AM
Parkesflyer
RJPIoW's Avatar
Quote:
Originally Posted by darticus
This looks like a great project for me but where would I get the foam?
Where abouts in the world are you ? Maybe local sources the people can tell you about once they know where you are located

Richard
May 11, 2008, 02:53 PM
Registered User
Richard, I would guess that it would be in that range. Without looking it up my 20" dart is give or take 5g of your ciphering. A 20" plan would be great. It will be made from peeled foam board 20"x30" so that would be a good size from that standpoint as well. My interest is in a windy flier. Thanks
May 12, 2008, 02:56 AM
Parkesflyer
RJPIoW's Avatar

20" Fidgit


I have scaled everything for a 3mm EPP version with 20" span, two pdf's attached.

Hope it goes ok

Richard
May 12, 2008, 02:52 PM
Registered User
sloper steve's Avatar
RJP that looks sooo good.
Thanks for making it I gave up on trying to get the tail close to the wing and you made it look great.
Here was my attempt:
https://www.rcgroups.com/forums/show...ghlight=wuggie

The fuselage came out great too.

Thanks!
May 12, 2008, 03:14 PM
Parkesflyer
RJPIoW's Avatar
Quote:
Originally Posted by sloper steve
RJP that looks sooo good.
Thanks for making it I gave up on trying to get the tail close to the wing and you made it look great.

The fuselage came out great too.

Thanks!
I appreciate the kind words even more coming from someone with your pedigree, thanks for that .... its made me gell my thoughts on a bigger 32" version Ive been playing with for sometime ....

Richard
May 12, 2008, 03:21 PM
Registered User
sloper steve's Avatar
Sorry if it is mentioned - does it knife alright?

Short and stubbie was unstable in knife for me from larger chords or a shorter fuse which responds strongly to its shape in knife edge.
Have you done any refinement or had any observations for nicer knife edge flight?
Thx for making it full 3D with ailerons.
The Fidgit 3D is the true 3D IFO indestructable 4 point roll program upgrade plan!


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