Saturday, May 23, 2020

Re: [electricboats] Measured Performance data sheet

13" with 15.5 pitch?  Or 15.5" with 13 pitch?


On May 23, 2020, at 11:05 AM, THOMAS VANDERMEULEN <tvinypsi@gmail.com> wrote:

Eric,
I agree with Patrick ... incredibly useful.
I've asked a follow-up question elsewhere, but will ask it here too, where it seems more to the point of the post topic.
What is the reduction ratio of your transmission?  [At least, in your photos, it appears that you have some sort of transmission or reduction between the motor and prop shaft.]
I've also already noted elsewhere that you're running a 4-blade wheel of 13" x 15.5" dimensions.  [Also a very helpful detail for verifying 3rd party prop estimating tables.]
Thanks in advance for the additional detail ... I would just like to work out the prop shaft speed to go with prop information.
[-tv]
Tom VanderMeulen
Grace O'Malley
Cape Dory 27
Monroe, MI

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