Multiplex
MovieStar
By Per Tidemann
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While I was writing my first review on the Multiplex
Movie-Star, I did not find this plane amazing, using the standard setup
provided with the plane, and was even a little disappointed, which I shared
on the review.
Per read it, and took it to the next level. Installing a Brushless setup
into this plane, and modifying few details.
First time I received Per's Email, he did not fly it yet, and I was thinking
how interesting it would be to have a second opinion, from someone like Per,
as you will read that Per is not someone who does things, half way......
Per then send me several Emails, with his findings, proving step by step, that the Movie-Star can not only be a good plane, but can do things that not many other planes could.
Here are some of Per's findings, and pictures on the Movie-Star. I was really impressed and I am sure you will too.
Enjoy !
Patrick Plawner.
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19 February 2003
I have been hunting for a good platform for video and GPS guiding and Moviestar was my choice after I lost my SunnyBoy when the wing suddenly broke in flight.
| Servos: 2 x 6 gram servos in the tail. It looks
very fine and rudder and elevator are rock steady. Motor: 2 x Hacker brushless BL20-15, 2.33:1 gear and 8x4 or maybe 9x4. Battery: 3000mah.Nimh. 7cell. Weight: fly ready without camera is 1283gram |
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| First Flight Takeoff from ground was good. Stability very good. Climb easy, and level flight at about 35% throttle. It was airborne for 12 minutes, not because the battery was empty, but this mornings temp is -12C and my fingers are so cold. Heavy bird, I am not sure. Speed was ok not too fast, need a lot of elevator, and it is possible to push a lot of elevator to reduce the speed.
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Second Flight Had to hand
launch because of snow. Climbing was good, and handling superb, more
stable. Flight time was only
10 minutes, cold battery and -1.5C.
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Flight, with on board GPS
Here you have the statistic from the GPS after today's flight with MS:
| Distance | 6.09km | Max speed | 62.5km/h |
| Average speed | 25,7km/h | Flight time | 12minutes 42 seconds |
Still have some stripes/and noise on the front cam, I try to figured out.
Video Specifications
The video equipment are:
Front cam Hires CCD 480lines resolution
*
Rear cam Med CCD 380lines resolution
Overlaycard STV-GPS - take NMEA strings from GPS and put it on the top
of picture
Homemade rc switch - relay to switch between the 2 cameras
Transmitter - 50mw 1 audio channel 2,4ghz **
Antenna airborne - 1/4 wave ground plane
Ground receiver 2,4 Ghz
Antenna - 12 element vertical home made yagi mounted on a bicycle helmet.
* Think this camera have some defect now, it's color balance is out of
spec. I am looking to find a new hires camera.
** Will change the transmitter when I got spare parts and then it will be
500mw output.
Range should be approx 5 km free sight with the
yagi antenna on the receiver.
Remember that using this high power video transmitter require a license,
otherwise 10mw is more or less legal in most countries. 10 mw with good
antennas is normally enough for good video reception for
app.300m.range.Place your plane
300m.away and see how small it is!
I have a Sony Cybershoot 3 mega pixel camera, I will try to make some kind
of bracket for this camera. I will not use the hole in the bottom, don't
like it. Side view with a little down tilting and cut a hole in the cockpit
for clear
view.
Also this camera has video out and I will use that to see where I am
pointing.
When I use the still camera will I remove the CCD cameras to save weight.
If weather are bad, the time is good to do this.
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