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Archive for November, 2011
Posted by GooberSB | Nov 24, 2011 @ 09:53 PM | 5,351 Views
So I managed to maiden a new wing and fly an older one today. Several times. But I also brought out the 22" UFO and the PZ UM Pole Cat.

Man I like the Pole Cat. It is a fantastic little plane. I don't have a UM T-28 but I wonder if the Pole Cat is sutable as an aileron trainer if used with a good transmitter. I use a DX6i and set the ailerons to 45% for now. I admit I'm not that good - but I can still fly this plane. It's very light (runs on 3.7V) and will float like the Champ or fly like a pylon racer.

Posted by GooberSB | Nov 24, 2011 @ 08:59 PM | 5,609 Views
I built a KFm-4ward on yesterday and just flew it today.

I put a ExceedRc Rocket motor on it with a 7x5 Master Airscrew prop and a 1800mah 3S lipo. This setup gives me over 200W at 20-25A. The motor can take 30A but max efficiency is only up to 18A. Balances nice and flies smooth on low rates. In this video I'm flying at 50% aileron and 60% elevator so it flares nicely at low speed landings as you can see at the end of the video. On high rates (100% throw) it will turn on a dime but I don't want that much throw when getting to know my planes.

It is a gentle giant on low rates and very maneuverable on high rates.

Here's a video of todays flight and some pictures

48" KFm-4ward (3 min 57 sec)

This is a nice flyby filmed Dec 17
KFm-4ward flyby (2 min 0 sec)
...Continue Reading
Posted by GooberSB | Nov 24, 2011 @ 07:55 PM | 5,940 Views

Thanksgiving turned out to be a great day to fly some wings. A little bit of breeze kept the Champ indoors. But not the KESL.

I've been flying it for months and still enjoy bringing it out on days that my small planes would be blown around.

Heres a flight video.

It doesn't have a super powerful motor on it (I wanted about 800g of thrust) but it's still around 1:1 thrust/weight ratio. Not a speed demon at all. I fly on low rates most of the time and in this video. I have my low rates set for 60% aileron and 60% elevator for low and 100% for high. When I want to do some tight turns I switch to high rates for a little while and then go back to relaxed flight on low.

The KESL build thread by rdjay is in the Foamies Scratchbuild forum...


42" KESL (1 min 34 sec)

Posted by GooberSB | Nov 21, 2011 @ 07:05 PM | 4,933 Views
Today was great for flying. Finally the wind was down and the temp was relatively warm (60 F or so).

I flew my 22" UFO this afternoonand this evening I flew it again, along with the HZ Champ and PZ UM Pole Cat. What a range of flying characteristics. All 3 fly differently but incredibly well.

Posted by GooberSB | Nov 21, 2011 @ 06:44 PM | 5,843 Views
I wanted to see how small I could go and make something I consider stable. I've tried wings down to 16" and found that they are very unpredicatble at that size (other than predictably fast and unstable).

So I decided to try a 12" version of gpw's UFO. Based on my experience with the 22" version I theorized that if the wing area was kept at slightly better than a HZ Champ and the same electronics were used I could create something that flies at about the speed of a Champ but have the stability of a disc. That's how the idea came about.

Here's the result
12" UFO (2 min 3 sec)

It weighs 55.5g and the wing loading is just under 2 oz / sq ft. My target weight was 60g so I was happy to be a little under that.

The details:
6mm FFF circle @ 12" diameter
3mm $Tree semi-circle @ 12" diameter
Champ/Vapor ESC/Rx brick
Champ motor/gearbox/prop
Champ/Vapor CF control rods
Flyzone Playmate landing gear
450mah 3.7v lipo

This build has boosted my confidence after a failed build this weekend. Now I'm working on a Sky Ray build by gpw, a 48" UFO, and a KFm-4ward wing by ombudsman.

The build that failed? A very unstable butterfly shape based off a cartoony butterfly clipart picture I liked.

...Continue Reading
Posted by GooberSB | Nov 01, 2011 @ 12:00 AM | 5,314 Views
On Saturday I wanted to build something quick and did a 22" version of a UFO. Need a break from wings.

BTW, the wings I've had great success building and flying are from the KESL thread. I've done a 20" with a little more sweep than the plans, a 24", and a 42" version. I like all 3 of them so they are still in rotation. One of these days I'll get some video of all 3 to post on the thread. I haven't reported on my builds yet but want to say thanks with some video.

Same goes for the UFO. It flies really nice. I tried to get some video of it today but the hat cam was looking up and the plane was out of view most of the time. I need to work on the placement...


Ok, I got some video of the UFO model. Certainly not the best but I've tried flying and filming with my DV camcorder and that didn't turn out well either.
So hatcam it is when I'm doing the filming and the flying.

USAF UFO (3 min 34 sec)

and some video of the 20" KESL wing

20" KESL Scratchbuild (4 min 21 sec)
...Continue Reading