paul_stewart

Well done, Amos!

Yes. The sliding panels can slide out of the tracks when the "garage top" is removed. The garage top is held in place by a set of port and starboard screws that are thru-bolted into permanently placed rivnuts.

Yes. It is unnecessary, but there is also fiberglass cloth helping to hold the aluminum onto the plywood panel. It is the edge of bare aluminum that slides in the track. The aluminum is epoxied to the underside of the sliding panel. The aluminum edge slides in a track. The track is a groove cut into epoxy that was thickened with graphite powder: the idea being that the graphite might reduce friction of the aluminum sliding in the track. I do not know if / how much the graphite helps. It would be interesting to measure coefficients of friction of aluminum sliding on epoxy-with-graphite vs epoxy-without-graphite. Oh, it appears that has already been studied: just google "friction between aluminum and epoxy that was thickened with graphite" for that information.

Amos, here's a few views that may help. The last pic is a look up into the CB well at the inflow/outflow pipe. The next to last pic shows my attempt to isolate pump vibrations from the bulkhead. There are 3 filters in this system (shown as circles in the diagram).

Research and Duplicate ....

Yes, I too am unable to read posts due to the "something went wrong" server/configuration error

Steve, So glad to hear that news as it will be great to hear more about your experiences with quiet motoring! I went with an ePropulsion motor too... (boat ready for painting, still need to build masts and install rigging).

This is a related tool review:

"LiFePO4 cells are incombustible, which is an important feature in the event of mishandling during charging or discharging. They can also withstand freezing cold, scorching heat, and rough terrain. When subjected to hazardous events such as collision or short-circuiting, they won’t explode or catch fire. Also, LiFePO4 batteries are non-toxic, non-contaminating and contain no rare earth metals and no cobalt or nickel, making them an environmentally friendly choice." -- relionbattery.com Regarding the meaning of "incombustible", it's reasonable to follow the advice of Will Prowse. He says a LiFePO4 battery is like metal box full of wood. It's stable and is not going to spontaneously combust or explode. Of course, if the entire boat is already a bonfire, then you could make it burn. Caveat emptor: when purchased from a reputable dealer.

New electrics for 2025 ...

Andy, we've had it in the water once at the 2024 B&B Mess-about; it seemed very good to me. For a more experienced comment, I suggest this one .... https://messing-about.com/forums/topic/16822-electric-or-gas-motor-for-a-core-sound-17-mark-3/#comment-120313

The ePropulsion Spirit 1.0 https://messing-about.com/forums/topic/16822-electric-or-gas-motor-for-a-core-sound-17-mark-3/#comment-120317 https://messing-about.com/forums/topic/16825-core-sound-20-mark-iii-16-dawn-patrol/#comment-120360 https://messing-about.com/forums/topic/16822-electric-or-gas-motor-for-a-core-sound-17-mark-3/#comment-120313 Wayne on ePropulsion Spirit 1.0 https://www.youtube.com/watch?v=fnVhaAesIKs https://www.youtube.com/watch?v=bQrcqvPWU2Y&t=0s https://www.youtube.com/watch?v=yTEm-beE6SQ&t=0s Quentin on ePropulsion Spirit 1.0 https://www.youtube.com/watch?v=3d2jzglB4fM&t=0s The ePropulsion eLite system https://www.youtube.com/watch?v=z_RqMk-ioas https://youtu.be/PGVP8XWCEfQ?t=371

Brilliant, Steve. Copy that!

Cool! (Pun intended) Thanks for sharing, Steve! Is the height of your mizzen tabernacle as specified in the 20.3 plans ??? (I was thinking of reducing the height of mine by an inch or two. Maybe.)

Boat building --every choice has pros and cons, everything is an experiment. Here's 2 photos of the hatch parts sliding in graphite-epoxy tracks based on 'research and copy': I have a huge collection of photos/videos ... of other boats; such as, > 200 images from "Carlita", 126 from "Skeena", 60 from "Larissa", etc. . . . . I appreciate your posted photos and videos!

... an untested work in progress ... Motor mount: ePropulsion battery in aft locker: "Garage-Top" (26"x25") location for a solar panel: Tiller-to-motor linkage:

Solar charging? yes! The plan is to locate a solar panel on the garage top (26"x25") that covers the bypass sliding hatches. The ePropulsion battery normally sits on top of the motor, but a 2meter extension power cable allows it to be in the aft locker, which I like better. Some related DC wiring/battery-storage plan details remain to be decided, and obviously it's all an untested work in progress. Solar panel tech and battery tech has been improving over the years, which is encouraging. [ photos in a separate post: "Core Sound 20 Mark III #16 Dawn Patrol" ]

Tiller-to-motor quick-connect ball-joint linkage

I chose the long shaft for our in-progress CS20 mark 3

ePropulsion website provides info about how to choose shaft length. https://www.epropulsion.com/post/measure-electric-outboard-shaft-length/

This is a fun video from the Small Craft Tasmania YouTube channel. (Race result at 10:50 into the video)

Beautiful ! Congrats ! For the CS20.3 I'm building I bought an ePropulsion Spirit 1.0 EVO motor.

WaterTribe names for those with B&B boats in this year's race : CS 17 MK1: PinkDog, ChangBiZi Matt Pinkley, Chris Elwell CS 17: TheMapster, Coastal Brooks Hall, Stuart Miller CS 17 mk2: SOS, SandyBottom Alan Stewart, Dawn Stewart ("Carlita" boat on loan from Graham Byrnes) (https://share.garmin.com/PHT96) EC 22: Triman, Cat5 Mark Ellison, Jeff Williams (boat built by Graham Byrnes) CS 20 MK3: WildBlue, SkinnyGenes Scott Henderson, Kilby Smith CS 20 MK3: NowWeTryItMyWay, CountryRoads, WhiteRabbit Erik Dykema, George Blaha, Mitchell Blaha Trimaran: SpongeBob Bob George (boat design by Alan Stewart) https://www.watertribe.com/Events/ShowRosters.aspx https://www.raceowl.com/EC2024/RaceMap4 https://www.facebook.com/ (WaterTribe group)

Thanks for sharing !!! No worries, obviously that's the Australian orientation instead of portrait or landscape. Good on ya mate, she'll be right, and soon enough shrimp on the barbie.