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« Reply #25 on: February 06, 2017, 07:47:35 PM »
K K Iyer
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@swapnilnimbalkar,
Your glide test proved 2 things:
1. It will fly straight and not turn sharply to either side
2. It will not roll unexpectedly to either side

This is to be expected once you reach the stage where your construction is fairly accurate.
You have obviously reached that stage.

A test glide is usually used to check if the CG position (and elevator trim) are approximately correct.
Your test doesn't address this because:
1. It is too short
2. Launch is nose high, leading to speed reduction, followed by dive.

Please try a longer test glide, over grass, with the nose slightly down, at about the speed you think it will fly at without power.

The objective is to find the CG position where it will fly without lifting or dropping the nose.

Somewhere in my RCTLG thread, there's a video of a test glide that went 60 metres from a 2 metre launch height!

(That was a specialised glider (no motor) designed for a high glide ratio. Yours will probably do 10-20 metres, long enough to judge if it needs weight in the nose or tail)

Here's the YouTube link. Hope it helps to show how to launch for a glide test.
Best of luck.
https://www.youtube.com/watch?feature=youtube_gdata_player&v=ie2thgI193A
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« Reply #26 on: February 06, 2017, 11:39:34 PM »
swapnilnimbalkar
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Wow. Very nicely explained sir. I really appreciate that.
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« Reply #27 on: February 08, 2017, 08:58:09 PM »
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Practice, and only Practice will make you perfect



Finger trouble is what it looks like, nothing wrong with the plane IMHO
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« Reply #28 on: February 09, 2017, 07:27:34 AM »
swapnilnimbalkar
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Finger trouble is what it looks like, nothing wrong with the plane IMHO
That did boost my confidence.
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« Reply #29 on: February 19, 2017, 02:12:15 PM »
swapnilnimbalkar
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R I P My Plane No more. It flew great.

Today I did the maiden flight. The plane was very gentle and slow flying, the way i wanted it to be.

Specs:

Airfoil: Clark Y
Chord: 10 in
WS: 60 in
AUW: 795 grams


I am very thankful to the people who helped especially Mr.K.K.Iyer Sir.

I still have two problems though,
1) It wants to turn to right on its own, even after trimming.
2) Motor vibrates a lot.

Here is the video.

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« Reply #30 on: February 19, 2017, 11:36:10 PM »
samayaraj
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Its nice fly.

1. The problem may be, the angle of motor is not in the straight line. Though you trim the rudder, it will not help. Check the motor orientation.

2. More vibration may be issue in motor itself, or imbalance prop, or improper motor mount. The motor mount had to be fixed in reinforced area.
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« Reply #31 on: February 20, 2017, 07:54:58 PM »
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Yes the motor mount is in bad condition. Thanks.
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