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Great thank you will have to look into itCheers

Hi, I just wanted to mention that I found a source of light weight PVC fairing stock at Streamline Fairings (uflyit.com). ( http://www.uflyit.com/streamline_fairings.htm ) Dennis from uflyit.com sold

Weight is a factor with big displacement boats, for an opposite reason.?For example,? I'll be taking out 10,000 lbs of Detroit Diesel 8v71s and installing motors weighing +/- 400 lbs.I need all the

Excellent treatise, Kevin. And no criticism here of the logic justifying using lead-acid batteries for displacement water craft propulsion based on the factors noted. You could also add to the

Yah! If you're loading your racing boat up with lithium and your wanting to plane, energy to weight ratio is big. However when displacement hulls are the major players weight becomes less of a

I concur with many here - go to thunderstruck-ev.com for complete kits. Their reduction/motor mount combo makes installation straight forward. if you have data - engine RPM - prop RPM - at the speeds

That is a good advise, in general !Always put a thrust bearing in the drive line.Anywhere, between the prop and the main shaft of the motor/engine. Carsten

The prop has an optimum speed and the motor has an optimum speed. Proper ratio in the gear reduction is when they match. My initial installation at 2.5 to 1 was over propped and I could “overload”

Hi Tom, Your boat looks great! If you're considering something low power on the order of 3 HP and have more time than money, you might get a motor and controller for $100-$200.? Study the torque

What kind of boat do you have, Tom ?Here we have all kinds of boats... What is an "A4" engine (please describe), and what kind of connection do you have between the engine and the prop ? If you

Thank You All, It is the 30hp A4 currently installed I know converting from a good running A4 to electric isn't exactly logical but what in boating is?? I do want to try going electric, it suites the

I have to disagree with ONE thing Matt said. The one penalty for oversizing may only be economic but it is real and could be significant between 3 and 10 HP. If cost is a minor consideration I'd say a

Assuming this was a 18hp Atomic?? You could definitely gain by going with a larger prop. Since you cant go much bigger and you wont need much power at all to push this 6 knots its probably not worth

I was thinking the same thing as Al. If that Atomic 4 is running good why convert?? A4s are super quiet and efficient ICEs. With the exception of using gasoline as its fuel, A4s are awesome and they

But wouldn't that be far less efficient and a little more noise?NickSent from my Bell Samsung device over Canada's largest network.

i got my kit from Thunderstruck as well. Two thumbs up! I just changed sprockets/ratios on the gear reduction until my existing prop worked. Much cheaper and easier than changing a prop.

Nicely done! If it were me I would be happy with the current speeds that you are getting, but my boat is electric and the only way it will go that fast is on the trailer. Have fun with your boat. Best

Thunderstruck EV is where my kit came from there is a lot of information on the site.

Hello friends, i just stumbled upon this site and looks like a wealth of information. I built a little crab skiff during Covid, 21’ narrow and pretty light. Power is currently an Atomic 4 gas

I've heard good things about NorthStar batteries, and I've used the Trojan "carbon infused" batteries but I wasn't that impressed. Sure, they worked a lot better, but they still don't hold a candle