Hi Dan etc, I worked with Jerry Dycus back in 09' (he did the hull/boat) I did the electronics, see the E-Cat: http://www.evalbum.com/2749 . It had 10KWH LiFePO4 batteries (essentialy 1 gallon of gas equiv)
But I couldn't water ski behind it (missed H20 skiing), so I sold in on Ebay to a guy running solar cabins on the upper Mississippi, needing an electric shuttle. It went about 30 miles at 7mph (hull speed mph= Sqr-root of Hull length X 1.3). On a planing hull (ski boat) efficiency is poor, best hope is a lightweight aluminum hull (have aluminum Starcraft 1200lbs 6x16 with Honda 60HP 13x13" pitch) That gets me up on a single ski. I thought it would be neat to make a electric ski boat but the one's in Europe were about $55K and went like a bat out of hell for only 30 minutes. The problem is even with my lightweight aluminum hull that weighs 1/3rd of a typical fiberglass 2.3mpg ski boat, mine got the Honda Marine efficiency award at 6.5mpg! Not something you'd want to commute to work on a daily basis (why electric cars make sense - but not electric speed boats). I have two 5 gallon tanks on board, can go about 65 miles, most of the day on 10 gallons. So, Dan - how *long* can you keep up 25-30mph with your electric boat? Is there a battery/motor/controller recipe that you can H20 ski all day like my current boat? Have a renewable energy day, Mark Mark E. Hanson 184 Vista Lane Fincastle, VA 24090 540-473-1248 phone & FAX, 540-816-0812 cell REEVA: community service RE & EV project club Website: www.REEVAdiy.org (See Project Gallery) UL Certified PV Installer My RE&EV Circuits: www.EVDL.org/lib/mh REEVA Demo: <http://youtu.be/4kqWn2H-rA0> http://youtu.be/4kqWn2H-rA0 <https://www.weatherlink.com/embeddablePage/show/a88920376f864ecabaed843dd89 75b8d/signature> Fincastle Solar Weather Station Date: Mon, 19 Jun 2023 19:44:07 -0300 From: Dan Baker <vmd...@gmail.com <mailto:vmd...@gmail.com> > To: Electric Vehicle Discussion List <ev@lists.evdl.org <mailto:ev@lists.evdl.org> > Subject: Re: [EVDL] Hyper 9 low-end performance problem Message-ID: <CAMJJmqt4nEVOmP6jQojCGTgMvmgoDAVbicXBBi1tz3=lruv...@mail.gmail.com <mailto:CAMJJmqt4nEVOmP6jQojCGTgMvmgoDAVbicXBBi1tz3=lruv...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" Hey Rick I have a hyper-9 on my 20' pontoon boat and it certainly delivers full torque off the line. I am running a "boat" controller file from hyper9 and it is their stock HV 144v controller that can with it. I'm running it also at 160v nominal from a split chevy volt pack. I have a whole other hyper9 HV kit going in an MGA, interesting to see how it works in a car and hoping I don't have issues as you describe. I know the software that comes to setup the hyper9 has quite a few options so I could try and capture some screens if needed. Video of my 'toon's holeshot to 20mph. Full 2 seconds quicker than a 150hp four stroke on same boat: https://youtu.be/_VqtA0Yoksw Cheers Dan -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20230620/73ddc590/attachment.htm> _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
