Sunday, September 24, 2023

[electricboats] Advice for electric conversion

Hello everyone, 

Alex from SV Frolic here, with some technical questions as I’m trying to build a system. My boat is a 1973 Columbia 30 (not the sport sailer with an open transom, but rather the raised deck one). I’m wanting to do a 48v battery system totaling around 400Ah, and convert to electric. Herein lies the issue:
my boat was originally sold with a gas motor, a Palmer P-60, mated to a v-drive transmission. 

I haven’t found much information as to the conversion process to electric for v-drives. And I’ve heard many people say they are touchy, sensitive transmissions as well. I’ve seen plenty of reduction gear setups for direct drives, even electric outboard builds, but nothing for a v-drive. 

That’s issue number one. 

Furthermore, I’m not sure what size motor to go for as I’m replacing a 4.0L 60hp inline 4 gas motor with plenty of torque (well, probably back when it ran). 

the displacement of my boat is factory 6 tons but in practicality I’m finding it’s more like 7 tons, or about 14k lbs. 

I’m new to EV’s and mechanically handy, but I’m fed up of this rusty old gas guzzling hunk of junk that always needs SOMETHING else. I’m dying to get out of the marina and shipyard routine. I miss my sea time. Thanks for your help. 

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