Sevcon Controller - Where to begin.

Boats, Jet Skis, Kayaks etc., including hovercrafts
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boatrenovationpeople   1 µW

1 µW
Posts: 1
Joined: Jan 04 2023 2:29pm

Sevcon Controller - Where to begin.

Post by boatrenovationpeople » Jan 04 2023 2:43pm

Hello folks, new to the forum currently re fitting an atlantic clipper 36 ketch yacht.
Trying to do a shoestring EV conversion, mainly for my own knowledge as for the past 5 years i've been rebuilding diesel engines and think its time to add some new skill sets.
Today my Sevcon- Gen4 -size 6 controller arrived. But I'm a little stumped on where to begin.
I have a 48v AC Juli Lift motor (20kw) from an old forklift. That I want to power, from 16 x 3.2v -280ah LIfep04 with another 16 x being added at a later date. I don't plan on maxing the motor out, far from it, the smallest amount of draw to make her move and occasionally punch a tide, with solar, wind and a backup genset.

I guess the first question is - What are others using for throttle controls, how does this translate to reverse.

Would mainly like to hear from others doing similar. :bigthumb:

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ZeroEm   100 MW

100 MW
Posts: 2786
Joined: May 03 2019 11:53am
Location: San Antonio, TX

Re: Sevcon Controller - Where to begin.

Post by ZeroEm » Jan 04 2023 3:43pm

Wanted to welcome you to ES!
Diesel mechanic going Electric, that's great. Looking forward to see the end result.

Just wanted to offer a link to a build that may help. A few pictures of the motor would help.

Shamrock, 25 foot sailboat electric conversion with an ebike hub motor Justin is the owner of Grin Technologies Ltd Did did a detailed build and has helped others in his area.
2019 Performer E-Trike
2013 Nissan Leaf S 7 bars 331.5w/KM

j bjork   1 MW

1 MW
Posts: 1632
Joined: Aug 31 2018 3:01pm
Location: Linköping, Sweden

Re: Sevcon Controller - Where to begin.

Post by j bjork » Jan 05 2023 3:20am

Here is a good place to start:
viewtopic.php?f=10&t=36146&hilit=sevcon

There are more threads, but this one is probably the biggest.

john61ct   100 GW

100 GW
Posts: 8750
Joined: Dec 18 2018 2:06pm

Re: Sevcon Controller - Where to begin.

Post by john61ct » Jan 05 2023 10:48am

If you ever find an expert willing to help remotely, from anywhere in the world, even if they are charging what you think are outrageous rates

please post a new thread with their contact info.

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