I have had a dream…….

The half of the F3A world fly electrified in the meantime; it works great and they are happy with the performance and could forget all maintenance.
Only fly, fly, fly.
And the other half of the F3A world like still the 4-stroke engines and they have all reason to be happy also because this drive sets works really great also.

During the last three years I have observe the different flying styles with both drive-versions very intensive…
.. and I get more and more my personal conviction, that over all, the 4 stroke power is the best compromise to fly F3A smooth, powerful and with constant speed at all wind/weather conditions!
Any ( many) years before, I like my stroke very much; they all run like a sewing machine. Great.
But in the meantime, I like my electrified so much, that I never would go back and I am convinced: they are the future, but …..
…. to fly electrified with the up to date four-stroke power was my great dream!

After the last WC I spoke with any other very well informed European pilots and judges about my opinion and many of them confirm my observation.
Rainer Seubert brought it of the point with his typical short words:
His “winner” at the last WC´s was not a pilot, not the biplane, not the monoplane ……… it was the four stroke!
And he have had a very simple solution; to make it real, an electric motor must only have the same rpm with the same prop like the four stroke engines.
Great steps are simple!

At any (long) talks with Rainer Hacker, I could persuade him to built some prototype motors with this characteristic. After any motors, many, many measurements and test-flights with different original four stroke props together with Günter Ulsamer from the German National Team, we have now the solution ready for market: The Q 80 20P/13s!!
He looks outside like the well known Q 80, but this version is 20 grams lighter. Could be, that the serie is lighter again ( titan-shaft??)

The data are: original APC 20x10,5 with 6950 rpm (at 36,8 Volt / 10s Top Fuel 4500mA under load) and 72 Amps!

Günter and I am sure, that you could fly never before F3A sooo smooth with so much power and a great constant speed!
And the performance of this new drive set make it much easier in several points. Not each click of throttle will punished with speed; it´s not really important, if you fly 45 degree upside with full or half throttle; the speed looks nearly the same!
Because, all looks very smooth, this drive set have much more power if you think at the first moment. It never ends and if there is a strong wind condition, you have only to fly with more throttles. This will be not really fast, but ever, the model fly stabile “in line”, mile far removes from each sponginess

My personal feeling is also, that all horizontal rolls are easier to fly.
It looks like we have more power as four stroke powered models, because we are lighter (4900 grams with 20C TopFuel). ….. and no maintenance, no vibrations, ever the same running characteristic.
The only missing thing is the four-stroke sound; but the Q 80 sounds so wonderful, that this is a great sound-alternative.

We have tried all props and the latest motor works at best with the 20x10,5 APC; accidental the same prop, the best pilots fly at the best and latest four stroke engine.
But with approx. 152 grams, this prop was too heavy for our motors and in the meantime, Günter Ulsamer have a version of his famous carbon-props (weight approx. 70 grams) with the same characteristic.

Over all, we are at the destination of my/ our dream !
Sometimes, great steps are simple.
Now, we are sure, the F3A future is electrified!
At the picture my new Jupiter ( Delro composite line) for season 2011 with Q 80 20P/11s. Official weight at the EC /Austria: 3670 grams without drive-batterie.
(Thanks to Ola Fremming for the nice picture)

The Q 80 20P / 13s will be available before the end of this year.