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        Idea How about a piYak??!!

#1 aeronot Apr 10, 2010 09:14 PM

How about a piYak??!!
 
1 Attachment(s)
Ok a little background here. My two favorite foamies are Sr71fan's pi plane and Leadfeather's EPP Yak. SO I wondered how would a piYak fly if it existed? Well it actually flies great! And with the EPP construction, it is going to last longer too which is a real bonus since I have built like 10 pi planes in the last couple years. Here is what I used to build it.

9mm 1.9 lb EPP foam
pico servos x 3
AR6100 rx
BW 1500 kv motor
GWS 9x4.7 prop
Turnigy plush 10 esc
500 mAh 2s LiPo
plastic HK motor mount

The disc is 18" in diameter and fuse 23" in length overall

Also I have no plans made, and since I have no CAD program there are no plans for plans lol If anyone out there wants to draw some plans, I can give you dimensions.

I have attached a pic and a video. This is my first time to edit a video, and first time to upload one too, so be gentle. I had no camera man handy so I had to go it on my own. It is also the test flight which actually went pretty well.

This is now my new favorite plane!

Mark

First flight of the piYak!! (2 min 58 sec)

#2 sr71fan Apr 10, 2010 10:52 PM

piYak
 
Too COOL!

Great! Now, I'll have to build one. :( :D

WooHoo!

#3 aranel Apr 10, 2010 10:57 PM

That is one cool little airplane Great job:D:D:D

#4 Tom Madron Apr 10, 2010 10:58 PM

I want one
 
Very nice Mark :) I need the template and some of your epp:eek:Unless you would like to build me one.:rolleyes:

#5 sr71fan Apr 10, 2010 11:05 PM

Quote:

Originally Posted by Tom Madron (Post 14824898)
Very nice Mark :) I need the template and some of your epp:eek:Unless you would like to build me one.:rolleyes:

Now that's funny, right there! :D

#6 aeronot Apr 10, 2010 11:06 PM

Quote:

Originally Posted by Tom Madron (Post 14824898)
Unless you would like to build me one.:rolleyes:

Umm let me think about it for a minute...NO!!!!

I am finishing the templates right now, so I can cut them on a hot wire.

It is really a blast to fly. So libertating to fly a plane you have no fear of crashing.

Mark

#7 jkarnacki Apr 11, 2010 01:09 AM

those torque rolls are CRAZY!!! looks like some real tight loops, too. looks like something you can just go "balls to the walls" with with no fear.

- Jeff

#8 aeronot Apr 11, 2010 05:32 AM

Jeff there is a little fear lol. All of the pi planes have very similar flight performance. They are best described as kinda a "3D only" design. You have to have good command of your rudder and throttle or you just simply aren't going to enjoy it very much because it won't go where you want it to lol. As with any "edgy" design it can get away from you very quickly too. But this version with the EPP construction will allow you to crash without near as many consequences which can buy you a lot of forgiveness! You will probably need a stash of props if you have never flown one though...ok you need a stash of props even if you have flown one before! :D

Mark

#9 dekan Apr 11, 2010 06:28 AM

Quote:

Originally Posted by aeronot (Post 14826127)
Jeff there is a little fear lol. All of the pi planes have very similar flight performance. They are best described as kinda a "3D only" design. You have to have good command of your rudder and throttle or you just simply aren't going to enjoy it very much because it won't go where you want it to lol. As with any "edgy" design it can get away from you very quickly too. But this version with the EPP construction will allow you to crash without near as many consequences which can buy you a lot of forgiveness! You will probably need a stash of props if you have never flown one though...ok you need a stash of props even if you have flown one before! :D

Mark

The moral of the story is don't use GWS slowfly props unless you can get them wholesale:D

Great plane BTW..PiPlanes and their friends are always good fun.... I was flying my PiPlane outdoors yesterday as there was only 6mph wind.:)

#10 aeronot Apr 11, 2010 06:39 AM

Quote:

Originally Posted by dekan (Post 14826268)
The moral of the story is don't use GWS slowfly props unless you can get them wholesale:D

Great plane BTW..PiPlanes and their friends are always good fun.... I was flying my PiPlane outdoors yesterday as there was only 6mph wind.:)

Very true on the SF props as they aren't durable. I also use the GWS HD 9x5 as it has similar performance and is tougher. But I still think the 9x4.7 flies better on some models. It does seem to have better throttle response and generally flies "snappier" too. I get them from HK in 6 packs so I can afford to break a few... :o

Mark

#11 gpw Apr 11, 2010 07:49 AM

Cute Plane !!! Just a suggestion ... a simple monowheel landing gear will help with the prop breaking bit ... shouldn't affect performance that much ..

#12 leadfeather Apr 11, 2010 08:01 AM

aeronot, What a great flying plane, nice job!

#13 aeronot Apr 11, 2010 10:06 AM

Thanks guys for all the compliments!

GPW I was told by SR71fan that he would shoot me if I ever put landing gear on a pi plane...:D

I actuallly started to add gear once, but I have gotten so used to hand launch and recovery that it might seem odd to fly one with gear. I might have to try it sometime.

I just flew the piYak outside and had a blast. Too much fun!

Mark

#14 goldguy Apr 11, 2010 10:31 AM

A pi and a Yak, great idea.

LG would add a demension to your flying.........shooting T n' Gs. The extra fun might override the fear of being shot.

#15 deisel1 Apr 12, 2010 06:48 PM

2 Attachment(s)
aeronot thanks for the idea hope mine flies as well as yours


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