The 130" Kinetic DP! - RC Groups
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Oct 12, 2010, 03:11 AM
Registered User
sll914's Avatar

The 130" Kinetic DP!

After playing with the numbers for a while, it became apparent that more speed could be had by pushing up the aspect ratio and wingloading on the Kinetic. The only question was how far I could go and what it would take to get it there? I decided to stretch the span to 130" while keeping the root chord as is. This was accomplished by replacing the original 40" center panel with an all new molded 70" center panel. All of other parts are shared with the original 100". The tail volumes on the 100" were slightly generous to start with and the 130" stretch is about as far as I think I can go without having to make another fuselage mold with a larger vert stab. The result is an AR of 17.5:1 which combined with an increased wing loading should be capable of 10-20% higher speeds for a given windspeed! My goal with this plane is to do more with less, such that the detriment of mach effect will be delayed beyond the 500mph barrier. I can't wait to get some wind to test things out!

The flaps are full span being driven by (4) Airtronics 94820 servos with the help of a JR matchbox. The flap servos have been dramatically improved with the external bearing modification described in another thread. The result is completely rock solid with NO flex or play whatsoever!

I'll be making these center panels available for any Kinetic owner to buy, but I need to complete the test drive and confirm the layup before I can set a price.

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Oct 12, 2010, 03:25 AM
Auzzie built planks
timbuck's Avatar
WOW ....... well done spencer , that looks like it does 500 just sitting there....
Praying for some big air now i guess..

Latest blog entry: More colours
Oct 12, 2010, 05:09 AM
DS= -$ & :-)
Ezza's Avatar
I know I say it alot but, I love your work Spencer!! Hope you get a big day to test it out soon.

Oct 12, 2010, 06:15 AM
Registered User
I like that high AR Spencer. Very nice it will be pushing local airspeed limits if it gets to 500 in a 50mph wind.
Good luck with it.
Oct 12, 2010, 07:48 AM
quickee's Avatar
Great job
We see your not just satisfied where your at,but always setting mark to a greater
height. Plane looks fantastc w/longer wing.Much success----(let the winds blow)

Oct 12, 2010, 10:10 AM
Stay in it!!!!
Looks awesome Spencer! I was thinking it would look too stretched but it really looks good. Ive got my work cut out for me.
Oct 12, 2010, 12:21 PM
Go Faster!!
Jason Lilly's Avatar
The new K130 DP looks smokin, all I can say is..... Bring on the AR!
I can't wait to see this beauty eat up the sky. These are the special things in life.
Oct 12, 2010, 12:33 PM
407mph P.B...Going 4 500mph!
_Sloper's Avatar
Very niceee, I like her new set of wings!! Molded 70" center panel, awesome!
Oct 12, 2010, 02:06 PM
More like crunchman....
dsman's Avatar
Pure porno.
Nice one, Spencer.
Onwards & upwards
Oct 12, 2010, 02:34 PM
speedster's Avatar

Very nice!

Put me on the list!
Oct 12, 2010, 04:25 PM
Where is the inspiration
wdeighton's Avatar
Very Nice
Cant wait to see how they and the k100 that are coming to the uk behave.
Oct 12, 2010, 05:13 PM
Registered User
Spencer you're gonna need a new locker man! There's no WAY that centre panel's gonna fit in there now!!!

Looks great. I was just thinking that you guys in Cali have gotta have the best speed/height ratio in aviation history. That's pretty cool!

Oct 12, 2010, 06:27 PM
sewing machine thumb
Originally Posted by Zimodile
I was just thinking that you guys in Cali have gotta have the best speed/height ratio in aviation history.
Sure, they're little guys, but they're not THAT short.
Oct 12, 2010, 07:46 PM
Registered User
Bill L's Avatar
Looks great Spencer, like the high aspect ratio

Oct 12, 2010, 09:15 PM
U down with EPP? Ya u know me!
Aerogance's Avatar
Now you can thermal at 500mph!

Looks fantastic, hope the maiden goes well.

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