Electric Ski Boat |
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M3Fan
Grand Poobah Joined: October-22-2005 Location: United States Status: Offline Points: 3185 |
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Try it now.
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2000 SN GT40 w/99 Graphics/Gel
2016 SN 200 OB 5.3L DI https://forum.fifteenoff.com |
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SN206
Grand Poobah Joined: February-25-2009 Location: Fort Worth, TX Status: Offline Points: 2339 |
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Link won't work.
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...those who have fallen and those who will.
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M3Fan
Grand Poobah Joined: October-22-2005 Location: United States Status: Offline Points: 3185 |
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Remember this conversation guys? Head over to Schnitz's site here and scroll about 1/4 of the way down. Looks like the electric ski boat is a reality. NIce video showing several skiers including April Coble Eller skiing an electric boat.
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2000 SN GT40 w/99 Graphics/Gel
2016 SN 200 OB 5.3L DI https://forum.fifteenoff.com |
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64X55
Senior Member Joined: January-19-2007 Location: United States Status: Offline Points: 214 |
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That sounds right. I noticed one of those pretty electric wood boats was $100,000.
So I guess that's $25,000 dollars worth of boat, and $75,000 worth of battery! |
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Inboards Rule!
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SNobsessed
Grand Poobah Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
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$75K for the batteries in that truck.
That would buy alot of dino pee. I'm going to be a late adopter of this technology. |
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64X55
Senior Member Joined: January-19-2007 Location: United States Status: Offline Points: 214 |
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Okay, so you back your "ELECTRIC" truck and your "ELECTRIC" boat into the "WATER" ...
... Wait a minute! Is this even safe? Just kidding. The little truck looks interesting. |
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Inboards Rule!
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SNobsessed
Grand Poobah Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
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64X - Check out the electric tow vehicle for the Edison. I wonder if there is room in the bed for a genset - for when they are both dead & tying up the boat ramp.
Electric Truck |
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eric lavine
Grand Poobah Joined: August-13-2006 Location: United States Status: Offline Points: 13413 |
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if you really sit and think about it, all of the up front money from the gasoline companies was spent along time ago, all the refineries are paid for so whatever they pump out at 100 bucks a barrel is close to heavy profits, they fore-see the coming age of electric cars, hydrogen cars, as the same for boats, i would say they see the end is near, with the way technology progresses within 20 years will be saying remember the sound of my 2000 correct craft, sorry for anaylizing but i keep seeing these advertisemants on these cars, and at one time i would of never of thought we would be hanging thin TV's on the wall or driving around with a phone
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"the things you own will start to own you"
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64X55
Senior Member Joined: January-19-2007 Location: United States Status: Offline Points: 214 |
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Okay, I'm up to speed now, but how about a 3rd option.
Real gasoline V8 power "PLUS" the sound system thing! Oooo! Maybe that would be "too much!" .... ....Naaaaa! |
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Inboards Rule!
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boat dr
Grand Poobah Joined: June-27-2004 Location: United States Status: Offline Points: 4245 |
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You missed the point.......
You can go slow but sound fast.... 2 group 27 deep cycle batts would give you 4hrs of top fuel sound and would peter out at about the same time the " fuel guage " shows empty for the boat batts........... |
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64X55
Senior Member Joined: January-19-2007 Location: United States Status: Offline Points: 214 |
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Wouldn't the 1000 watt sound system drain the electric engine's battery too fast ?
Oops! Pardon me; "...motor"! |
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Inboards Rule!
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boat dr
Grand Poobah Joined: June-27-2004 Location: United States Status: Offline Points: 4245 |
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You guys have this sound thing all wrong.....
Quinner has the speakers and the amps that will supply at least 1000 watts, more than enough DB's for that sound we all crave. Now what we need is a digital recording of a AA/FC at full tilt for the take off fading into a top end run for the cruise mode. This would keep Barney at bay while we play at the other end of the lake. Loud and proud = GREEN |
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64X55
Senior Member Joined: January-19-2007 Location: United States Status: Offline Points: 214 |
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I don't think that will be loud enough... |
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Inboards Rule!
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SNobsessed
Grand Poobah Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
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"You're right! I just thought about it for 30 seconds and you're right; silent boats are stupid!"
64X - Here is a Baby Boomer Solution for our latest technological hurdle. The tree huggers will be proud of us. Vrroom Vrroom |
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bkhallpass
Grand Poobah Joined: March-29-2005 Location: United States Status: Offline Points: 4723 |
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Tesla is built in our area. One of my reps has been calling upon them seeking their computer business. Kind of neat looking car. BKH
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Livin' the Dream
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M3Fan
Grand Poobah Joined: October-22-2005 Location: United States Status: Offline Points: 3185 |
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79Tique
Senior Member Joined: September-04-2006 Location: United States Status: Offline Points: 380 |
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A friend of mine down in Phoenix has a custom built electric sports car built in about 2003. The thing cost him about 80K but it has no generator and is hella fast! If you give it full pedal from the stop it pulls to 100mph so fast it's very hard to control. If you drive it hard you only get a couple hours of driving, but with light driving you can get about 4 hours.
The tech must be better now, why not an electric ski boat? |
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Work to live, not live to work.
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64X55
Senior Member Joined: January-19-2007 Location: United States Status: Offline Points: 214 |
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jbear,
You're right! I just thought about it for 30 seconds and you're right; silent boats are stupid! Your tag (or whatever you call those little quips there at the end of every post) has been my favorite since I saw it: "Loud pipes save lives!" And the sound is a big part of why mine says "Inboards Rule!" So I take it back. I wouldn't be happy in a noiseless boat world. I'm not sure what I was thinking? Every now and then I get real practical for no good reason! |
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Inboards Rule!
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eric lavine
Grand Poobah Joined: August-13-2006 Location: United States Status: Offline Points: 13413 |
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Aemmer, who did you work for? i did alot of work for American commercial barge lines down in South America,
Ive heard of these lines snapping and never seen it, the crew always told me about them snapping and to stay away we we were underway |
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"the things you own will start to own you"
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Aemmer
Groupie Joined: August-05-2007 Location: United States Status: Offline Points: 91 |
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Eric,
I watched a 5" tow line stretch and snap one time when we ran a barge aground. Picture a ski rope handle flying back into the boat after a fall X 100. |
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88 2001
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jbear
Grand Poobah Joined: January-21-2005 Location: Lake Wales FL. Status: Offline Points: 8193 |
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I gotta agree with Pat...why silent? How many heads would turn on the ramp when you fired her up? And ain't that at least part of the reason we are here?
Better ease up on the reefer. john |
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"Loud pipes save lives"
AdamT sez "I'm Canadian and a beaver lover myself"... |
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eric lavine
Grand Poobah Joined: August-13-2006 Location: United States Status: Offline Points: 13413 |
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emd, which i believe stands for electric motor division, Detroit diesel, on trains,
uses a main power plant to motors (word correctly used) at wheels, never on an electric powered tug but i believe they are out there on larger vessels. I was on a 85 foot tug once and was pretty green at the time and we were tied off to the docks and the throttle hung wide open with the trans engaged, the tug tilted far to the side and scared the sh*t out of me, i was in the engine room, they got the throttle to come to idle....its one of those things you dont forget |
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"the things you own will start to own you"
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64X55
Senior Member Joined: January-19-2007 Location: United States Status: Offline Points: 214 |
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Here's some more on the Boesch:
http://blog.tradeonlytoday.com/dealer_outlook/index.php/?p=52 Wow! Okay, all "electric boat w/o V8 sound" nonsense aside... ...just kidding; the ideas are interesting and sad to say (for those (like me (and most of you)) addicted to V8 sound, they are probably necessary ideas. I can appreciate thinking, as was mentioned above, "outside the box" except when it comes to inboard sound! That's where I like to think inside the box; and I mean actually inside the box, the dog box, the engine box! It's easier to think "period" with V8 sound in the background. It drowns out every distraction! Someone thought outside the box once with digital cameras. I'm sure everybody by now has noticed that their digital cameras make a click sound that sounds like an old mechanical shutter "THAT ISN'T ACTUALLY IN THERE!" You can turn that sound off on many digital cameras. It's like "silent choice" (or captain's choice?) for shutter bugs. It's for "getting old dogs" (like us), but in the camera world, who can't imagine that their camera has actually taken a picture without going "CLICK!" Similarly, I can't imagine a skier yelling "Hit it!" and the next sound you hear closely resembling the sound of a Makita (er, I mean Milwaukee) cordless drill! Seriously, all "sound" discussion aside, the actual power capability still apparently has a good ways to go. You notice all references to skiing are directed toward wakeboard, trick ski and/or wake surf speeds (i.e. "SLOW"). Even without using my handy "km/H to mph" converter, I'm seeing numbers that basically mean "slow." Here's a good conversion chart for aging skiers: < 50km/H = "Too Slow!" Since 50km/H means close enough to 30 mph, it means those numbers you're seeing with those nifty electric boats are still "Too Slow" for your basic old dog skiing (barefoot and slalom). I do like the old wood designs some of those companies are doing the E-boats in - those are some pretty boats, but I think that's just another attempt to entice a certain age of boaters into the fold. Still, I guess I could live in a world without the super cool sound of gas engines provided the electrics (or whatever (hydrogen maybe??))were as powerful as gas AND less expensive to run. Think about folks that lived life using horses and liked it that way. I'm sure that was a tough transition for many. Maybe that's why the automobile's first power plant's (gas engines) were said to generate something cleverly named "HORSEpower!" |
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Inboards Rule!
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Riley
Grand Poobah Joined: January-19-2004 Location: Portland, ME Status: Offline Points: 7953 |
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Don't tug boats and trains have deisel electric engines in order to eliminate a transmission?
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M3Fan
Grand Poobah Joined: October-22-2005 Location: United States Status: Offline Points: 3185 |
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Still, that's thinking outside of the box- why have one big motor when perhaps two smaller ones would work better? There has to be a solution here, although it may defy conventional thinking.
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2016 SN 200 OB 5.3L DI https://forum.fifteenoff.com |
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Mojo
Grand Poobah Joined: December-06-2006 Location: United States Status: Offline Points: 3106 |
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Can you say "Sticker Shock"
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05' SV211 TE
73' Martinique had:96' SNOB had:76' Nautique had 77 Tique |
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FINS
Senior Member Joined: August-04-2007 Location: United States Status: Offline Points: 170 |
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Pete- This should be right up your alley... except for the price tag! Twin screws in a inboard runabout would be great. Their website shows a video of someone wake boarding. We also have a Fiberglassics member that has grafted a 105# trust electric trolling motor into a old outboard case. They are just getting ready to test it.
EDISON BOATS |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Joel, I made a error in my statement! The torque of a electric motor decreases as RPM's increase so any reduction you put on the motor isn't going to change torque but rather keep it constant. What I was trying to say in my previous post is if you increase the motor RPM, you will loose torque but then with a reduction box you will gain it back. You are now back to the point of having no box. You also would need to figure in losses in the gear box. They are not 100% efficient. Matching the correct motor to the correct prop would be the way to go without a gearbox.
The bottom line problem that still exsists is the batteries. A boat requires energy to keep it up on plane (or as Boesch calls it "gliding phase") and that consumes lots. Cars on wheels have very little rolling resistance and most of the power is to overcome the wind resistance. You can't create needed energy with a gearbox. |
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M3Fan
Grand Poobah Joined: October-22-2005 Location: United States Status: Offline Points: 3185 |
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Ok, finally some good technical input on the subject! Exactly what I was looking for. An assumption I had made was that the electric motor would be capable of much higher RPM then a gas or diesel. So, with the reduction I was thinking that the reduction would "reduce" WOT RPM to 4400 RPM or so from something way higher, like 10k RPM or more. If that's not possible then oh well. Going back to the example of my drill, the reduction is pretty extreme, which is what initially got me thinking about this. Far more than a 1.5:1 or 1.23:1 ratio- I'm talking 10:1 or more. As another example, my RotoZip's 5A electric motor turns 30,000 RPM (just an example- I'm not thinking of powering a boat with a RotoZip). I'd imagine with some reduction you could see some major power at 4400 RPM. So, smaller, weaker motor with high RPM and serious redux. Is that feasible? |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Yes there are electric tug boats but they have a means of generating power and are not on batteries. Using this all battery Boesch as a example, I don't feel anyone would be happy with its performance. The Boat Doc is certainly on the correct track with the HP of the Boesch electric. They are using a 3 phase AC motor with a inverter setup for frequency-speed control so I'm comming up with roughly about 110 HP. (190 amps X 250 volts X 1.73 - 3 phase multiplier Divided by 746 with 100% efficiency. (efficiency is unknown so HP will be lower) That's not much HP compaired to gas but considering the top speed of 22 MPH is about right. Yes, my little Atom with the 60HP does better than 35 but of coarse is a lighter and smaller boat. Depending on the type of battery they are using, I figure they have 20 or 21 hooked in series. (they look like gel cells so it may be 20) A 4D gel gives you 180 amp hours so with that size you will only get about a hour of boating/sking (at 22MPH!!) before the volts are pulled down to the recommended min. This is if you were using the full HP drawing the 50,000 watts (190 amps).
Joel, With a gear reduction, yes, you would gain torque but you will loose RPM which means swinging a larger prop. The reduction drives in our gas ski boats now only improves the hole shot due to the larger prop. I don't think that is the answer. A electric motor has plenty of torque and increases with RPM. As with electric cars, I feel the battery technology just isn't there yet. I wonder what the wake looks like? With 20 4D gel cell, that's 2600lbs of ballast! (130lb X 20) Edit mistake: Electric motor torque decreases with more RPM. |
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