Lighter than 103, 120 or 115 class, rather in the Sub70

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henryk

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View attachment 93332

I’d like to see an Sub70 ( below 154lbs) 3-axis bird powered by one of these powered Paraglider engines!
=KASPERWING 1-80 (75 kg)...iff replace G-25B (23 HP, 20 kg) into
modern 10 kg PPG engine +CR propellers... <70 kg .
 

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lr27

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I'm sure it's already happened a number of times, except with a worse choice of engines. One example was the Birdman TL-1. If the Skeeto SA-8 didn't meet that weight requirement, it was pretty close. Depending on which engine it had when weighed at 175 lbs,, using a small paramotor might save enough weight.
 

Dana

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The Bloop motorfloater is powered by a paramotor engine, though it's a bit heavier at 180 lbs:

 

cluttonfred

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Sub-70kg 3-axis for Erkki-sized pilots is going to be a challenge and may result in a fragile, fair-weather machine as slow as a paramotor. So why not just get one of the existing, proven paramotor trikes, a two-seater flown solo if necessary?

0134F0F6-94EF-4961-B688-ACDDE4B60451.jpeg
 

erkki67

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Not a beautiful design, but it fulfills the Sub70 rule:
A2EA0738-80DB-44E5-B3C8-6378E603C3A2.jpeg F8B23383-96BE-4FBB-A9A6-C839442931B2.jpeg

So it can be done.
only question that remains, will it lift my luxury body and some liters or gallons of fuel?!
 

cluttonfred

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That’s neat, Erkki, per G-INFO it’s a MITCHINSON CW SAFARI SA1-001 but that’s all I found. I seem to remember seeing something about it in the LAA magazine a couple of years ago. Anyone know more?
 

Dana

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Hovey did it 40 years ago, and today we can’t do it again with all what the engineers know today?
I always thought Hovey's Whing Ding was a cool design. But by most accounts, it was barely able to hop the length of the runway in ground effect. Also remember the ultralights of the era mostly flew in the dead calm of sunrise or sunset.
 

erkki67

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Im wondering what the KISS is weighting , a kind of a Beta-Bird from Australia I guess?

It should be possible to have this light birds rebuilt, just to fly around the church in the evening, with no cross country ambitions.
 

lr27

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Isn't the Bloop 2 axis? If we can believe Sandlin's claim of 25 mph cruise, the wings are probably bigger than they need to be, which might help a little with the weight. I imagine if one was willing to make a few changes,that would increase the building expense or time, the target weight s within reach.
 
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