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prop size

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On 22/05/2020 at 17:01, Martin Whelan said:

might be a silly question. can I put a bigger prop on my machine and would it make any difference 


More thrust, better efficiency.....
You will need to modify your re-drive unless you get a variable pitch prop and a lager hoop would be wise
I would love to see someone put a 160cm prop on an Atom 80 but I'm guessing you would only be able to reverse launch with such a large hoop and it would be an expensive experiment if you couldn't get it to make sense.
If life was long enough and cash was no object, I'm pretty sure I would do it just for the science :) 

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