What do ya'll recommend for a newbie to read about prop selection the dos and don'ts. I have a helion rivos bl 1800kv 30amp esc 3s 4000mah 25c all stock to the boat. I bought the boat used and have never run it. The prop was broke I have ordered a graupner k series 40 mm and 42 mm . I have read tips & info here just looking for more info.
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I think the big do's and dont's list is fairly short.
Don't - modify a copper beryllium prop without good PPE and ventilation.
Don't - put too big of a prop on it.
Don't - Run a new prop and assume its fine using the whole battery. Run it for a few passes back n forth and then check everything with an IR gun.
I have found the most efficient prop for my mono hull / deep Vee is the Octura X Seires. I don't know a lot about sizing for a boat that size as all of my boats are 40+"
It had seemed like taking my boats hull size in inches and making that transition to prop in MM +3mm worked well so far for electric setups. So for example 42" mono runs great with a 45mm prop. (Octura X445 or X645)
I may be wrong but if your boat is only 24.5" then maybe a 27-32mm prop is best? Hopefully some experience with smaller boats can chime in to assist there, but that 40 and 42mm prop sounds very large for a small boat with a 40a ESC. -
Ramp up:
Replace the ESC to a 120/180amp (with a 1800kv motor for sure)
Batteries: should be at least at min 5000mah/50c or better for decent run times (3-4 min)
As far as props, check out and look up "dashbota" on this site and get some good props. Props on FE boats run at extreme rpm's and need to be balanced/sharpened (if not bad things can happen)Comment
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I just looked up the Helion and found an example on A-Mains site. Can?t find a factory prop size tho. 3s and 1800kv is keeping a pretty low RPM (I normally would run 5-6s on this kv) which would allow use of a bigger prop and better runtime. Also a lower amperage ESC. Based on this info I think you are not too far off the mark on this.Originally posted by chuck de View Post
Now if you get bored of it (as we all seem to) we can revisit this as an upgrade
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