A Photo & Discussion Forum for Wharram Design Enthusiasts
I am new on this forum, and one of my interests is in electric propulsion, so when I am ready to build my Wharram I would love to power it with electric.
I am planning to build a Tiki 38 in a few years. We would mainly be sailing and thinking of two electric outboard engines with a diesel genset as backup.
I'm wondering if there is anything has changed since the last message here?
Lots has changed. Lithium batteries and many more motor options being huge. Also there are used motors and batteries from Teslas and Leafs available pretty cheaply.
We are currently building a 51' Wharram kinda cat. It will weigh in at 30,000 lbs with a 26' beam. Airconditioning, reefer/freezer , electric winches ,electric appliances.
We are using 4 stacks of 7 Tesla model s 5.6 kw batteries. Nominal voltage of 158volts. We are using Orion BMS's and Service Control Modules . We have Max prop24" 3 blade feathering propellers.The motors are Netgain Hyper 9HVs with a belt drive reduction through a jack shaft and thrust bearing. WE have assmebled a test cart to proof all of this before we install it all in the hulls. We have 2 Beta Marine 38hp diesels that are belted to two mor netgain motors to serve as 158v dc generators and a big 24volt alternator for the house banks. We have been researching electric drives for 2 years. We started buying components in March and now have the components set up on the test cart . We have every thing now wired up and charging and spinning the motor. It is not real easy. The people (Electric GT) who sold us the motors were of no assistance and told me to go away. We chargers and BMS's and batteries from Stealth EV . They also declined to help us make things work. Ewert Energy, who makes the Orion BMS's also will not help us. They say that is the dealers issue.We have had very good service from the Netgain Motors. We also have just puchased some more chargers , dc/dc converters and a SCM from Adam at Hawkeye Innovations LLC. He has been abig help so far and has a system set up just for the parts we have. " target="_blank"><iframe width="475" height="267" src="https...