prop
At the moment i own a Rad Arrow Paramotor 120cc petrol, This motor has a 1.2m carbon fiber proppeller,so im going to use this prop on my project.
This motor produces 50kg of thrust.
The engine runs at 9500rpm and I believe it has a 1:3.8 reduction
This means the prop must spin at 2500rpm or slightly less under load to produce this thrust
I do not require this thrust so I have used an online model aircraft propeller calculator and played around with the figures to give me an idea of what propeller rpm I need.
http://personal.osi.hu/fuzesisz/strc_eng/index.htm
I’m unsure of the accuracy of this but it’s the only thing that gives me an idea so far.
I may build a thrust rig for my current paramotor and record what rpm is needed for 35 to 40 kg of thrust.
At the moment I'm assuming I need 2000rpm 2200rpm prop speed.
