My friend, I thought I explained everything to you in our long telephone conversation a fortnight ago.There is no point in using a brushed motor unless you have a brushed ESC to control it. What is the point in discussing propeller sizes unless you have your dimensions of the model/ weight of the model / Therefore thrust required / wattage expended or drawn. Do you have all that figured out? No one can answer a vague question like " What prop do I need for this motor" without these details. I am repeating all that I told you earlier :
First get your basics right. What will be All Up Weight (AUW) of your Hovercraft - including everything onboard - Structure (including Deck and Cabin), Motor, Battery, ESC, Receiver, Prop - EVERYTHING included! How big is it going to be? Length, Width and Height?
Do you want to control it via RC (Radio / Remote Control) or is it Free Sailing? Just moves when the power switch is on and requires to be manually adjusted in motion.
Are you copying an original Hovercraft - Griffon, SRN or any other?
Are you building it to scale (Are you following any maps, scales or diagrams?0r are you just building it as you think is right?)
What are you trying to achieve? (A) A model that demonstrates the Hovercraft principle - no matter how it looks (B) A model that looks like an actual Hovercraft (Built to a scale) and works like the original (C) Just trying to win a competition with a rough and ready model and you don't really care how it looks, as long as it WORKS!
Candid replies will help all of us understand you and your endeavour better.
Regards,
VC
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