Re: [electricboats] Repowering a 55' sailboat - Tentative Design

Steven,

Do you have a link to the batteries? That's  about half to 1/3 of the costs I've  seen recently. 

Thanks, 

Jerry Barth

Sent from my Sprint Tablet.

-------- Original message --------

From: Steven Borg <steve@theborg.family>

Date: 11/27/20 12:31 AM (GMT-05:00)

To: electricboats@groups.io

Subject: Re: [electricboats] Repowering a 55' sailboat - Tentative Design

I think I've settled on the setup. Let me know if I've made some poor choices.

Motor and Controller: Hyper-9 HV (running at 144-154V) (also includes contactor and relay)
Charging: TSM2500 x 2 (support up to 6kw at 220V input) (from Thunderstruck)
BMS: Dilithium Designs BMS Controller and 1 Satellite (for 48 cells) (from Thunderstruck)
Batteries: 3.2V 280Ah Lithium (CALB-style) - 48 batteries for 154V (or 45 batteries for 144V) (from Alibaba - shipped from China)

Total cost is approximately $11,000 with the batteries running just over $4k

Besides a Engine Mounting, Throttle and Key, what am I missing in this configuration?

Finally... I'm connecting the engine (1 1/4" shaft) to a 29 spline male end of my 2.57 velvetdrive transmission/ 2.57 reduction.  How the heck do I do that cost effectively?  Slip yoke? Pinion yoke? Spider join? Some home brewed shaft coupling?  Yikes!