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Greetings. My 3rd SeaRay is a 1997...
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05-17-2021 03:32 PM
Greetings. My 3rd SeaRay is a 1997 Dancer 330 V-drive. Her two 7.4's are drunk on sea water. In my research, I learned that she has been repowered at least three times. And that scenario is not uncommon with this design/year/model/configuration. So instead of financing a fourth failure, I've researched kicking the gas habit and moving into the 22nd Century with electric motors. I understand about the power and range limitations. Being old, my Need for Speed has greatly diminished. The speed limit in my bay is mostly 5mph. Pounding her out in the deep blue wreaked havoc on my bar and wine collection. All of the required gasser maintenance projects cut too deep into my cocktail hours. I prefer to fish the local restaurants and markets these days. I've already caught my limit of "You're Crazy" judgements. Comments from an experience with a similar conversion would be greatly appreciated. Grassy asss.
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05-17-2021 04:14 PM
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05-17-2021 08:48 PM
Too bad about the engine problems.
My understanding is that there was a short run w/ log exhausts instead of the lift exhausts. Those log exhausts were susceptible to engine hydrolocking when getting whacked in the stern by the trailing wake, when coming off the throttle.
If required / applicable, a boat built w/ log exhaust can be reworked to lift exhaust.
The other / more common issue is neglected manifolds / risers / elbows that suffer from internal corrosion when operated in salt water.
A salt water boat must include an annual exhaust disassembly for visual inspection for both internal corrosion and for SOLID wall thickness between raw water and exhaust gas passages.
Zero idea on conversion to electric, but that doesn't seem feasible.
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05-18-2021 11:46 AM
probably going to be hard to get that one insured! HAHA
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05-21-2021 02:10 PM
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05-21-2021 07:31 PM
There could even be room for a perch for a person holding a whip at the transom.
The manufacturer does not list anything close to this application for those motors. Each provides short bursts up to 25hp, versus the ~350hp continuously available from the gas engines.
It is very likely that the wind and current will greatly exceed the available thrust, making the anchor critically important.
Please ensure sufficient video coverage, from multiple angles, is available to document the results.
https://electricyacht.com/wp-content/uploads/2019/04/QuietTorque-10-Sport-Product-Data-Sheet-Apr2021.pdf
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05-22-2021 05:47 AM
https://www.victronenergy.com/upload/documents/Datasheet-Centaur-Charger-EN.pdf
Does ~$4K of battery chargers change the gas engine versus electric motor decision?
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05-22-2021 07:35 PM
One is the previously mentioned log exhausts.
Another is also previously mentioned deteriorated cast iron exhaust parts.
The exhaust geometry must also be correct, w/ proper slopes and other important dimensions and angles/
Good luck.
