I've flow full scale for a lot of years. One of the things I miss in RC Jets is having an Indicated Airspeed Indicator IAS.
I knew if I was 90 knots over the fence all was good with the landing. RC Jets are pretty picky with their airspeed and I've seen a few downwind stalls in high winds that really wrecked someones day. Not to mention how nice it would be to know the indicated airspeed on short final. Too much airspeed you get bounces and a long rollout, possibly some off-roading. Not enough airspeed and you get tipstalls and pancake landings, sometimes worse..
I was really excited to find this:
www.cb-elektronics.de/Index%20english.html
<a href="http://www.cb-elektronics.de/Index%20english.html" target="_blank">
</a>Follow the link to the FSS-460.
I have Installed these on my CARF Flash, Eurosport and my SM F-5.
I have them setup on my 18MZ so when I flip a switch, through an earbud, the radio calls our "speed 63mph, 62mph, 61mph .."
On my flash I got high, set it up landing configuration and established my Vs0 (Landing config Stall Speed) it was about 43mph. I took that, multiplied it by 1.3 which is kind of a rule of thumb Full Scale approach speed and got 56mph as an approach speed. To be a little safe I set 60mph as my target "Over the Fence" speed.
Lo and behold my landings GREATLY improved. I usually fly where there is a lot of wind, many times with a strong crosswind component. Downwind I was surprised how much my airspeed dropped even though it looked like I was really haulin' *****. Several landings I was holding a 10 degree crab into the wind but as long as I kept my IAS near 60mph landings were great.
On my Eurosport I have a problem with Vertical Stab flutter if I go to fast. I programmed in a warning on the 18MZ for a Vne (Velocity Never Exceed) at 150mph and it gives me a little piece of mind and reminds me to slow down.
Dirk in Germany is a cool guy and from time of order to receipt it takes about a week. He's also working on an item that will transmit all of the Jetcat Parameters including fuel Usage/Remaining to the 18MZ - How cool would that be!
Any questions on performance installation or setup I'd be glad to assist.
Happy Flying!
Steve