Can I turn this into a ultralight engine?

[nomandik]

Can I turn it 80cc bicycle engine into a ultralight airplane engine that will actually get off the ground?

Updates

+1 y

912 ULS S 100 HPRotax aircraft engine 912 ULS 1Engine with the best-in-class power-to-weight ratio. Four-stroke piston engine with four liquid and air-cooled cylindersDry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet2 carburetorsMechanical fuel pumpDual-electronic ignitionElectric starterPropeller speed reduction gearboxAir intake system

[andreasderjuengere]

Technically, it's possible; but I have doubts that you'll get an approval or certificate;

so you need to fly where no one checks you up :D

What is impractical with bike motors: the propeller usually sits on the extension of the crank shaft; so you'd need something like what the Wright brothers did.

For proper flying, you'd also need two independent ignition systems (not sure if that's a requirement for ultralights)

Most likely, you'll use a carburetor - that can be troublesome at high angles (the earlier Spitfires in WW2 had problems due to this)

For ideas, see also:

https://www.youtube.com/embed/Z7oRT2cxPdo

[maximumpower]

Sure.
Go for it.

[Anpu23]

Weight vs lift sure but there's lots of math involved before building. That particular motor also may not be approved by the FAA for flight.

[BeMuse]

I suppose so. People have done it with less...

[BeMuse]

I guess I should say people have claimed to have done it... I think the minimum safe recommendation is something like 25 hp.

[Anonymous]

If the craft was light enough and still able to achieve lift. That engine would top out at about 30-35 mph. The slowest powered plane ever flown was the Gossamer Albatross and it topped out at a lighting quick speed of 18 mph.🤣

[KrakenAttackin]

How many horsepower from this engine?