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Old Feb 16, 2013, 04:36 PM
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Joined Jul 2011
234 Posts
No its because It was my maiden flight and i was affraid to increase lot throttle. The second reason is the ground, it was really very sticky. At the end of the session I taked off half shortly
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Old Feb 16, 2013, 04:56 PM
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Aviefly's Avatar
United Kingdom, Aviemore
Joined Feb 2005
3,240 Posts
Quote:
Originally Posted by Andreotti View Post
I had the maiden flight today of my new build baby Polaris:

http://www.youtube.com/watch?v=watRCY9IUGI

Motor: 2200kv (16gr, 8A)
Lipo: 450mA 3S
Prop: 5x2.75
Wingspan: 50cm
Flying weight: 232 gram
Nice one

Like seeingeyegod said it's a quick little bugger but at one point it looked like you got it slowed down pretty well. Good work
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Old Feb 16, 2013, 07:22 PM
Row 0, Seat A
G550Ted's Avatar
Savannah, GA
Joined Jan 2008
2,649 Posts
Quote:
Originally Posted by seeingeyegod View Post
It does look underpowered on the ground but in the air it doesn't look nose heavy at all, nose stays up in turns. I wonder if the kfm2 makes it take longer to take off, or maybe its not getting quite full power from the motor? Reminds me of the takeoffs of my first polaris with a half broken motor that was only pulling around 18A
He stated "my motor is the brushless of AXN floater plane." That is a 180w motor, so his build won't have the performance achieved with the motors typically used for this size.

Ted
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Old Feb 16, 2013, 09:48 PM
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United States, OR, Portland
Joined Jan 2008
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Votes on whether or not to salvage this?


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Old Feb 16, 2013, 10:12 PM
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Canada, AB, Champion
Joined Aug 2012
258 Posts
Quote:
Originally Posted by Bledi View Post
The weight is 640g with a 2200mah 50C (170g)
Nice one Bledi.

My first polaris use same motor and prop, 600g with 1300mah (112g), almost same weight if use same battery, this motor has more than enough thrust for the weight, so short take off won't be issue.
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Old Feb 16, 2013, 10:22 PM
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Singapore, Singapore
Joined Jun 2012
1,411 Posts
Noooooo cobralaris RIP
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Old Feb 16, 2013, 10:36 PM
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United States, OR, Portland
Joined Jan 2008
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It really took a beating I know . Both wings fronts separated from fuse, right wing carbon spar is partially visible like a bone sticking out of a wound . Kinda amazing that the nose didn't crush at all though, just broke off. I really don't feel like making a new nose, and redoing the paint. Mehhhhhh. There is a chunk missing out of the vertical fin too I realize now that I've tried piecing them back together. I think it is worth fixing though. Just hope it can be reasonably straight. Hopefully will have the onboard video available to post in about a week, guy who's keychain cam I had borrowed said it came out really well
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Old Feb 17, 2013, 03:36 AM
Tony Audsley Retired Locksmith
Lockey's Avatar
Australia, WA, Perth
Joined Sep 2011
2,050 Posts
Quote:
Votes on whether or not to salvage this?
Looks like its repairable to me I have repaired planes in a lot worse condition than that one.

Looks like a fairly clean break at the front and I am sure the rest will glue back together OK

My vote is: YES

Lockey
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Old Feb 17, 2013, 06:34 AM
59 years of RC flying
Daedalus66's Avatar
Canada, ON, Ottawa
Joined Feb 2006
15,744 Posts
Quote:
Originally Posted by seeingeyegod View Post
Votes on whether or not to salvage this?


I would fix it. Anything that's broken and not crushed can be glued back together. As for straight, that's up to you.
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Old Feb 17, 2013, 08:20 AM
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JugglerMike's Avatar
Fond du Lac, Wisconsin USA
Joined Dec 2007
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Here's what happens when you get so caught up in flying this beautiful bird that you lose track of your surroundings - A tree will jump out in front of you and do THIS!!!

For those of you new to this game, this crash is not as bad as it seems. One on the beauties of Depron is that you can pretty much just put the pieces back together, glue it up, and be back in the air.

Thanks to the many great design attributes of this plane, NONE of the control or power components were lost. Just a few hours of glue and paint and she'll be good as new (plus a little extra weight - we all tend to gain a little weight and battle scars as we age!! )

I'll post a pic when she is back together again...
Attached Thumbnails

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I have had a number of bad crashes with this model and am amazed at how it can be repaired and flown again and again... My vote is to repair!
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Old Feb 17, 2013, 10:35 AM
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Bledi's Avatar
Joined Jul 2011
234 Posts
some pictures of the day
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Old Feb 17, 2013, 10:55 AM
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Joined Oct 2010
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Quote:
Originally Posted by seeingeyegod View Post
Votes on whether or not to salvage this?


I rebuilt my original polaris and although it still flies, it does not fly great. I built a new one and the lighter one flies more than great. I can't remember if your cobralaris was a little on the heavy side to start with, but if it was, I would start a new one and work hard to keep it light. Since I got my new lighter polaris built, I have not even taken my heavier rebuilt one up in the air. It never hurts to keep the old one around for an alternate one if ever needed.
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Old Feb 17, 2013, 11:17 AM
59 years of RC flying
Daedalus66's Avatar
Canada, ON, Ottawa
Joined Feb 2006
15,744 Posts
It all depends on how you repair it. If you are careful, use just enough glue and resist the temptation to add all sorts of reinforcement, you can repair with very little weight gain.
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Old Feb 17, 2013, 11:29 AM
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Joined Aug 2004
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"A mere flesh wound............"

One more vote to rebuild.....
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Old Feb 17, 2013, 01:56 PM
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Bledi's Avatar
Joined Jul 2011
234 Posts
a small video onboard for the second day of my Polaris.
As you can see the takeoff is really shortest as yesterday
Polaris Seaplane : 2min onboard (1 min 44 sec)
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