Wednesday, April 26, 2017

Re: [Electric Boats] Re: Beneteau First 26 electric conversion

 

Bob,

I would like to help you with calculating the gear ratio for the reduction. I could also provide other valuable information too. To do this, I need some additional information.

Please reply with the following:
1.) Waterline length of vessel in Feet
2.) Beam at the waterline in Feet
3.) Molded hull draft (excluding keel) in Feet
4.) Vessel displacement weight in Pounds 
5.) Number of engines (Shaft lines)    
6.) Desired maximum speed
7.) Desired cruise speed (efficiency)
8.) Vessel year, make and model

Scott

On Wed, Apr 26, 2017 at 4:55 PM, bob jennings sabre281@yahoo.com [electricboats] <electricboats@yahoogroups.com> wrote:
 

Jon,

Yes I'm planning on gear reduction but will be expermenting with the ratios. It's another part of the reason for building my own mounting system, to make changing the driven sheeve easy. I plan to start out at 1.5-1, bought the clearview display in order to monitor motor/controller temperature & will teak the ratio from there as required. For thrust bearings, not sure yet but I've been looking at 4 bolt composite flanged bearings. I want to be sure the driven shaft portion of the assembly is electrically isolated from the mount & drive. The Thunderstuck gear reduction isn't a bad deal for the money, I just wanted to do something different. It's a personality flaw, never have stayed between lines :)

Bob

--------------------------------------------
On Wed, 4/26/17, iwpdjxgov7lev62jza5wvrs5rzz3l2nbgbqc7oft@yahoo.com [electricboats] <electricboats@yahoogroups.com> wrote:

Subject: Re: [Electric Boats] Re: Beneteau First 26 electric conversion
To: electricboats@yahoogroups.com
Date: Wednesday, April 26, 2017, 11:26 AM


 









@Bob: Did you plan for a reduction gear and
thrust-bearing of your own design as well then? I fully
agree the mounting options with the single plate looks less
than ideal, but I assume it works considering people are
using it like that.
As
for the folding VS regen I am still curious if I can achieve
both using my Gori folding prop, based on this statement
from Oceanvolt. https://www.ab-marine.com/2015/11/18/gori-selected-as-the-factory-supplied-propeller-for-oceanvolt/ If
it works I'll be happy, if it don't work I'll
figure something else out.
@Mark I don't live close to
Grimstad unfortunately, but if you are documenting your
installation I'd be happy if you share it
online.
/Jon









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