Lumenier RB2205C-12 2400KV SKITZO Ceramic Bearing Motor
Thread Tools
Old Feb 17, 2013, 03:59 PM
seeingeyegod is offline
Find More Posts by seeingeyegod
Registered User
seeingeyegod's Avatar
Quote:
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.
Sign up now
to remove ads between posts
Old Feb 17, 2013, 05:35 PM
Andreotti is offline
Find More Posts by Andreotti
Registered User
Andreotti's Avatar
Quote:
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.
Old Feb 18, 2013, 06:00 AM
Ghost who walks is online now
Find More Posts by Ghost who walks
Build, Fly, Rebuild!!
Ghost who walks's Avatar

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
Old Feb 18, 2013, 08:13 AM
Daedalus66 is online now
Find More Posts by Daedalus66
60 years of RC flying
Daedalus66's Avatar
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.
Old Feb 18, 2013, 01:30 PM
Darksmile is offline
Find More Posts by Darksmile
Registered User
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)
Old Feb 18, 2013, 01:49 PM
Bledi is offline
Find More Posts by Bledi
Registered User
Bledi's Avatar
Really a good job ! How can you have a so light Plane ? Is it a 100% ?
Old Feb 18, 2013, 02:10 PM
Aviefly is offline
Find More Posts by Aviefly
Registered User
Aviefly's Avatar
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.
Old Feb 18, 2013, 02:11 PM
Darksmile is offline
Find More Posts by Darksmile
Registered User
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.
Old Feb 18, 2013, 02:24 PM
Aviefly is offline
Find More Posts by Aviefly
Registered User
Aviefly's Avatar
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.
Old Feb 18, 2013, 02:48 PM
jbarchuk is offline
Find More Posts by jbarchuk
Registered User
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.
Old Feb 18, 2013, 04:05 PM
Darksmile is offline
Find More Posts by Darksmile
Registered User
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
Old Feb 18, 2013, 05:52 PM
Lockey is online now
Find More Posts by Lockey
Tony Audsley Retired Locksmith
Lockey's Avatar
Darksmile ... thanks for sharing your fantastic video and GREAT flying ... Nice looking Polar-Cat

Lockey
Old Feb 18, 2013, 06:47 PM
Mazzepa1 is online now
Find More Posts by Mazzepa1
This is kid stuff.
Mazzepa1's Avatar
Quote:
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.
Old Feb 18, 2013, 08:19 PM
ak68 is offline
Find More Posts by ak68
Registered User
ak68's Avatar
@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)
Old Feb 18, 2013, 09:57 PM
seeingeyegod is offline
Find More Posts by seeingeyegod
Registered User
seeingeyegod's Avatar
nice flying!