thanks much. Appx cost?I repowered my E29 19 years ago. With a Yanmar 2gm20f.
Its was 50 pounds lighter than the A4, but a bit taller.
I built a box top and insulated it. The yanmar came with all the controls and cables.
FYI, I pulled the fuel tank, Cleaned it and reused it.
Also a one in shaft fit inside the existing tube. Of course I had to re-prop as well. put on a two bladed prop till I found the right Martek Folding Prop.
When I was calling around and ask why Yanmar? The most frequent response is we put them in and they never come back
Bingo. That's one of the main reasons we replaced our old diesel. It was gong to cost at least half or more of the price of the new Betamarine, mounts, panel, trans, wiring, trans. coupler, and also a warranty. If we had rebuilt or replaced every worn out part of the old power train, we would *still* have a 1988 engine. I had become pretty darned good at diagnosing it's problems and finding workarounds for its foibles, but it finally occurred to me that I was becoming a servant to the engine.About twice the price of rebuilding the a4
I agree. The California mandate for all cars to go electric may not be necessary as the technology matures. Batteries are getting denser. Motors are getting more efficient. Regen technology is improving. Soon electric power over ICE will be a no brainer.With battery tech and electric drives improving each year, I think that may be the way to go if I can wait a few years.
It would seem that regen speed is going to be very dependent on the design of the prop , motor and optimizing for your boat.Yeah, if and when the Atomic 4 ever becomes unrepairable, I might very well drink the electric Kool-aide. Or boat-hop.
For me, one of the best features of the E29 is the wide-open interior and double quarterberth. I rearranged the FWC to get the engine compartment back down to its original flush fit. I doubt that any other engine would fit under the quarterberth. But many others feel differently.
Coincidentally, last night I watched some YouTubers demonstrate the regenerative charging on their fancy Oceanvolt motor. They didn't start getting significant charging until the boat speed got over six knots. So that might be one aspect that's a bit out of reach for boats like the E29 with insufficient WLL. Anyway, I'd probably be more likely to use some sort of home-brew conversion for this dirt-cheap boat.
So far, the A4 is purring right along, though some of the ancillary components did need to be replaced when I got it. It wasn't anything like the cost of an engine replacement.