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Cascade Ultralights Kasperwing

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Highflight

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Dec 20, 2010
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-I cant wait (to old!), then we by opposite motor (DLE 170) and install them in CR mode...
(cylinders rotating too)

I agree, we have been waiting many years for the battery technology to provide the required power density equal to that of gasoline.
If we install an electric motor now the batteries can be upgraded when they provide an improvement in performance, unfortunately it is an expensive
option. The cost of an electric system is still prohibitive when compared to a conventional gas engine, it probably will remain so another five to ten years.
 

Highflight

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henryk

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Mar 8, 2010
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krakow,poland
It is a very attractive, compact engine. I don't believe it has enough thrust to compete with our current Rotax 447, 503 and 583 engines, most of which are fitted with 62" (1575mm) props.
=40-60 HP engines seems to big for 1-place KASPERWING...

=20 HP x >5 kG/HP (in "CR" mode ) => 100 kG thrust force =anoth for 160 kg K-W...?

=by inserting styrofoam blocks into LE pocket we get better L/D (circa 20 %),
no need in big thrust.
 

Highflight

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Joined
Dec 20, 2010
Messages
160
Location
North America, Earth, Milky Way Galaxy
=40-60 HP engines seems to big for 1-place KASPERWING...

=20 HP x >5 kG/HP (in "CR" mode ) => 100 kG thrust force =anoth for 160 kg K-W...?

=by inserting styrofoam blocks into LE pocket we get better L/D (circa 20 %),
no need in big thrust.

We have found the Rotax 447 to be the best engine for the Kasperwing single place, the single cylinder Zenoah did not have a long service, it worked too hard especially if a float system was installed.
It also depends on how and where you fly, the extra power of the 447 allows for a spectacular take off and steep climb, all of our Kasperwings at Price Field (Camano Island) have at least a 440 engine installed.
 

henryk

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Messages
5,353
Location
krakow,poland
We have found the Rotax 447 to be the best engine for the Kasperwing single place, the single cylinder Zenoah did not have a long service, it worked too hard especially if a float system was installed.
It also depends on how and where you fly, the extra power of the 447 allows for a spectacular take off and steep climb, all of our Kasperwings at Price Field (Camano Island) have at least a 440 engine installed.
-my be,but today tendency is to minimise power ("nanotrikes")

http://hydronamic.free.fr/a/?page_id=163

https://www.youtube.com/watch?v=zefHfQWPhTI
 

Highflight

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We fly in an area were 200ft per minute climb is not acceptable, Price Field is 1,500ft long with 15ft dikes on both ends, the landing field is below sea level. A long slow climb would be over water, not something I like to do if I can avoid it.
The engines built today have a longer life span than the engines we had back in the old days, the small go kart engine we used would wear out in 25-50 hours of hard use. It wasn't uncommon for local pilots to make 100mile cross country trips requiring multiple fuel stops, the small engines didn't last many flying seasons of this type of use.
 

henryk

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Mar 8, 2010
Messages
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Location
krakow,poland
We fly in an area were 200ft per minute climb is not acceptable, Price Field is 1,500ft long with 15ft dikes on both ends, the landing field is below sea level. A long slow climb would be over water, not something I like to do if I can avoid it.
The engines built today have a longer life span than the engines we had back in the old days, the small go kart engine we used would wear out in 25-50 hours of hard use. It wasn't uncommon for local pilots to make 100mile cross country trips requiring multiple fuel stops, the small engines didn't last many flying seasons of this type of use.
-is it any flying KASPWERWING with floats and with enclosed cabin (pod ?)

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcQV1ayKRfLFnVz4rC7YtgsrW7ZFSG4kAXZw5KtOWngC_rJCumMv

http://www.vega-lotnie.eu/kasperwing/

=bad,polish one...
 

henryk

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Mar 8, 2010
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5,353
Location
krakow,poland
-is it any flying KASPWERWING with floats and with enclosed cabin (pod ?

I do not remember seeing any enclosed cabin KWs on floats. I have flown with the pod and with floats but never at the same time.
=L/D (finesse ?) improovement with enclosed cabin?

-I was reading L/D=15 number ??? (10 withaut...)

-do You know water ultrashort take off and landing at high AoA ?

https://www.youtube.com/watch?v=sQixcsaAdIc

[url]https://www.youtube.com/watch?v=rWkkIb85obA

[/URL]
 

Highflight

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Joined
Dec 20, 2010
Messages
160
Location
North America, Earth, Milky Way Galaxy
=L/D (finesse ?) improovement with enclosed cabin?

-do You know water ultrashort take off and landing at high AoA ?


Steve Grossruck claimed the pod increased top speed 3-5mph, directional stability improved, I expect it also improved the L/D slightly. The float drag slowed the KW top speed, no noticeable negative handling or control were noted with the float system installed.

First video is of Steve Grossruck with prototype floats, I believe it is a Zenoah 250cc engine, no spray deck.
Second video is Scott Price, Rotax 503 engine, final design lifting spray deck. Take off run was very short.
 
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