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Tampilkan postingan dengan label calculations. Tampilkan semua postingan
Tampilkan postingan dengan label calculations. Tampilkan semua postingan

Rabu, 06 Juli 2016

HP Calculations

In reply to a comment here, I realised I hadnt shown my workings!

So is the 12hp engine powerful enough?



This would be the maximum output.  Its very unlikely my batteries could ever draw this much. The plan is to run the engine at 1500rpm, however it can be run faster if needed.  Why 1500?  well its very quiet at that rpm, but even at 2000rpm its a fraction of the noise at 3000rpm.



This is the horsepower required to achieve this.



This is what I am looking to achieve at 1500rpm



This is the horsepower required.



These calculations are of course in ideal situations with a new engine, however there is still about 33% to play with.

So time will tell, but Im confident the engine will drive it.  Interestingly when I was considering a 1500rpm 4 pole 230v alternator it was calculated by the intended supplier that it could not exceed 3kw output.

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Sabtu, 07 Maret 2015

Boat propeller design calculations Must see

Sample images Boat propeller design calculations Electric boat, proper rpm and propeller-fishing_boat_linesplan.png Boat Propeller Size Calculator Boat Propeller Efficiency Boat Propeller Size Calculator Pontoon Boat Propeller Calculator
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Rabu, 04 Maret 2015

Boat hull design calculations

Boat hull design calculations Best Boat Hull Shape Small Boat Hull Designs Boat Planing Angle Buoyancy Formula Flotation Center Florida
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