Was this an industrial electric boat solution for the prop ?
Whats the pitch, please ?
Just to confirm, 18" X 1100 RPM prop rpm.
Any data re: efficiency / speed ?
The 18" "sounds good" to me.
The 18" prop has over double the area of a 10" prop, circa 10 hp usable power.
Thus, with a lower pitch, perhaps near 4-5", it might be significantly more efficient.
1100 rpm seems a bit high, to me, perhaps ??
Just looked online, and a 20Hp ICE drive recommended about
10.4" prop, 6.1 pitch, for 20 Hp motor
(30 feet, 5 ft beam, 5000 lbs, 5500 rpm, 2:1 transmission, just to try this).
It states 5 Hp used for speed of 6 knots.
https://www.vicprop.com/displacement_size.php?action=calculate
The Props are 18" 3 blade (No damage) connected to the motors with a straight shaft.
Batteries
-- -hanermo (cnc designs)
Posted by: Hannu Venermo <gcode.fi@gmail.com>
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