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Old Feb 17, 2013, 03:59 PM
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Originally Posted by Daedalus66 View Post
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.
I'm wondering if I should try fixing it with uhu or foam tac... epoxy will add a lot of weight, and yes Cobralaris was already slightly on the heavy side.
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Old Feb 17, 2013, 05:35 PM
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The Netherlands, ZH, Alphen aan den Rijn
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Originally Posted by seeingeyegod View Post
Man, that thing is fast! And Tiny! You must have great eyes to keep orientation without contrasting colors.
Yes, it's fast for it's size.
And I had problems with the contrast. The only way to see what's up and down is by the tail. So I made some color changes to (hopefully) fix that.
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Old Feb 18, 2013, 06:00 AM
Build, Fly, Rebuild!!
Ghost who walks's Avatar
Australia, NSW, Lake Macquarie
Joined Dec 2011
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Repair Repair Repair

Quote:
Originally Posted by seeingeyegod View Post
Votes on whether or not to salvage this?


Seeingeyegod it's just a little scratch

Foam doublers and CA then pretty it up afterwards. I replaced the whole bottom on mine with a thicker foam during the rebuild to take the split out of the underside as well as increase the height of the step.

Ghost
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Old Feb 18, 2013, 08:13 AM
60 years of RC flying
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Canada, ON, Ottawa
Joined Feb 2006
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Quote:
Originally Posted by seeingeyegod View Post
I'm wondering if I should try fixing it with uhu or foam tac... epoxy will add a lot of weight, and yes Cobralaris was already slightly on the heavy side.
Epoxy only adds a lot of weight if you use a lot of it. The basic rule is that any glue you can see is not doing anything useful. The aim is to restore the strength of the Depron, not to add unnecessary filets or skin.

If the repairs are made tightly and any excess glue is wiped off, the weight gain is minimal. I hold things together with pins and masking tape to get nice tight joints. Another thing I do is to mix in Microballoons, which add volume without much weight, and also give a nice white color, preventing the epoxy from turning yellow.

If you do need to make an epoxy skin, such as on the battery tray to make the Velcro stick, the way to do it is to use a heat gun to warm up the epoxy, then squeegee it to get uniform coverage, and finally blot off as much as you can with toilet paper or paper towel.

I can't comment on using Gorilla Glue for repairs as I haven't done much experimenting with it.

I'm now starting to use Foam Tac more for building and it looks very promising for repairs. Will report further.
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Old Feb 18, 2013, 01:30 PM
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Joined Jul 2011
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Hi to everybody! At first sorry for this bad english ;-)

Another Polaris (Polar-Cat) flying in Germany Bavaria.
I modified the download plan into a Polar-Cat.
Let me tell you about my thoughts that came with the idea of building that great looking plane.
The name of the plane "Polar - CAT" was the reason to search for a good looking Pilot.
So i found one :-) That "gothic looking" kitty with the black skull bow tie.
This cute looking head inspired me of an more darker and evil look for the Polar-Cat.
So i decided to use colours that emphasize my propensity to the "Gothic culture"
Black/violet :-)
Making kind of a pirate amphibious vehicle :-)
It took me almost 3 weeks to build in case of not having any hobby room.

I used several cheap servos i have in my collection. A unused 40A ESC and a spektrum receiver. The motor i had in mind first, was to low in KV a 1000KV one that i had in my collection. So i bought a EMAX GF 2210/20 mit 1534 KV and a 7x6 propeller. The battery i use is a 3-S 900mAH. I wanted the plane as lightweight as i could do it. I managed 380g weight. I measured 10,5 A at full throttle.
The slow flying skill of that plane are really fantastic. It flies like on a railroad. Very nice - i love it! Great work, even though the first realease is such a long time ago - much FUN

I also made a short video of the plane flying in snow.
Polar Cat am Abend (3 min 36 sec)
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Old Feb 18, 2013, 01:49 PM
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Really a good job ! How can you have a so light Plane ? Is it a 100% ?
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Old Feb 18, 2013, 02:10 PM
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United Kingdom, Aviemore
Joined Feb 2005
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Wow nice one Darksmile not sure how Gothic the cat pilot is though

How on earth did you make it that light? it sure looks like it fly's that light.
I must get round to building another one and go all out light next time.
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Old Feb 18, 2013, 02:11 PM
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Yes 100%. The weight is without battery. Sorry i cheated
Battery weight is about 80g, so flying weight is about 460g

I took all the RC components as far as possible to the front side of the plane.
Used leight weight linking rods. The Motor weight is about 45g

My goal was to use my 3-S 900mAh Lipos that are left from another plane i had years ago. The same Lipo´s i use in my "SeaPron", who is simmilar in weight and dimension to the Polaris.
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Old Feb 18, 2013, 02:24 PM
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Still,,,, that's 200g lighter than mine with no battery and I'm flying with 2200's most the time that weigh 186g. I do fly it on some 1600's and 1800's as well though.
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Old Feb 18, 2013, 02:48 PM
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DeBary, FL
Joined Nov 2010
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Quote:
Originally Posted by Darksmile View Post
The name of the plane "Polar - CAT" was the reason to search for a good looking Pilot.
So i found one :-) That "gothic looking" kitty with the black skull bow tie.
Excellent-excellent on all counts.

Is that windshield from scratch? Or did you cut it out of a bottle or something else?

The curves look too complex to be scratch, but the shape doesn't remind me of anything it could have been made from.
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Old Feb 18, 2013, 04:05 PM
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That windshield is packing of a "scented plugin" called "Airwick" in Germany.
Bought one and in the moment i wanted to throw it to trashcan i got that intension, this would be a wonderful windshield for the "Polar-Cat"

http://ecx.images-amazon.com/images/I/51mq0mjCoUL.jpg

Walking through stores an look here and there and i sometimes find things to misuse
So i found a nice looking canopy for my Blade mQX
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Old Feb 18, 2013, 05:52 PM
Tony Audsley Retired Locksmith
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Australia, WA, Perth
Joined Sep 2011
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Darksmile ... thanks for sharing your fantastic video and GREAT flying ... Nice looking Polar-Cat

Lockey
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Old Feb 18, 2013, 06:47 PM
This is kid stuff.
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USA, AR, Harrison
Joined Aug 2010
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Originally Posted by Lockey View Post
Darksmile ... thanks for sharing your fantastic video and GREAT flying ... Nice looking Polar-Cat

Lockey
Ditto Lockey's comments. Great color scheme.
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Old Feb 18, 2013, 08:19 PM
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Nederland, ZH
Joined Dec 2011
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@how much:

Here is some footage of the spontaneous floatfly that I happend to attend recently. It was at the Carr Mill Lake in the UK. Starring mainly Wet Wings MVC Carrmilaris seaplanes. You should have seen the guy who's building a Sunderland. He was really working the Tx.
Thanks D, R & C for sharing your time.

CARRMILL (7 min 48 sec)
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Old Feb 18, 2013, 09:57 PM
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nice flying!
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