Rudeboy

[link=http://www.tanicpacks.com/files/FastPlaneVideo.wmv]E-Magnum[/link]

I love this guys take-off technique

angelrcdesign

My Feedback: (40)

What the set up ?

Rudeboy

Neu 1521/1.5 (presumably a Y)
Tanic 9S 4350 lipo pack
Castle Creations HV 85 controller
Hercules HBEC ( up to 11S and switchable 5 or 6 volts)
Berg 7 rx by Castle Creations
6 x 9 APC prop

Performance numbers:
RPM in excess of 32,000
Watts in excess if 3400
amps 102 +
thrust 288 oz +
estimated speed 220+
Plane weight 5 1/2 pounds

Kmot

My Feedback: (24)

Very impressive! [X(]

MJD

My Feedback: (1)

Boy he nearly planted it. Can you say "torque reaction"? I think I'll pass on trying that with my glow Magnum!

Bob.R

My Feedback: (2)

Good reflexes!

Rudeboy, any additional info, such as web links, on this project? Any idea how the 220 mph estimated top speed is derived? Looks like landing speed is about half the top speed.

freakingfast

My Feedback: (3)

I tried that kind of take-off with a coroplast delta.....it wasn't pretty[:@]

Razor-RCU

My Feedback: (50)

Aw spit, every time I try to open and view the link that pane freezes and I get kicked out of all my web pages---

Strykaas

Awesome, but can you imagine the price of that setup ??

Razor,
Download the file and try "Media Player classic" @ http://sourceforge.net/projects/guliverkli/
It might help you.

Isaac F

I was going to say the same! How much it cost that set up? Just the battery is like $300.oo
[X(]

Isaac

Rudeboy

The powersystem works out to about 1000 USD... battery will be about half of that...

Isaac F

There is nothing like the smell of nitro


Isaac

Strykaas

Isaac, at this price, I would say "kero"

balsaeater

Saw that vidio somewhere else eletric flight forum i think

From memory jhvent time to verify it with motor calc or similarTo get 220 mph at 100% prop efiency with a 9 inch pitch prop I think you need some 35K

alowing for normal 70% rule that reguires closer to 45 k RPM

I figure realy with a 40 mph folowing tailwind and down wind dive doing real speed in the air of 180mph and thats the 220 mph explained


Balsaeater

Mike Connor

My Feedback: (5)

rpm x pitch speed for a 9 pitch prop at 32000 is 272 mph. A 6" prop on a magnum seems a little small to me and I am sure drag would keep it from getting anywhere close to 272 mph. ThrustHP calculates just under 4 lbs of thrust. I think that take off shows it had more then that considering it is a 5 1/2 lb plane.

Overall I think it is neat and makes me consider electrics. I wonder how well that $1000 motor and battery holds up in a crash?

cncswiss1

can someone doppler that setup, it sounds way in excess of 32k