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#31
posted to rec.boats.cruising
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Suzuki DF4 vs. DF6
Wayne.B wrote:
For low speed on a small pond you might be happy with an electric trolling motor and a deep cycle battery. That's what I've been thiinkin' from the start. What's wrong with that idea? Rick |
#32
posted to rec.boats.cruising
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Suzuki DF4 vs. DF6
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#33
posted to rec.boats.cruising
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Suzuki DF4 vs. DF6
On Fri, 11 Apr 08 Bruce in Bangkok
Mostly that a can of gas is a lot easier to wrestle down the dock and into the boat then a truck battery. Under most circumstances I would agree. But for his fairly specific single purpose (small boat, small lake, prolly doesn't even HAVE a dock), a small non-spill battery would suffice. And it, plus a trolling motor, would be easier to wrestle than an outboard, never mind the gas tank. And for a lot less money to purchase AND maintain over the years. Btw, he could just leave the battery in the boat with a $10 solar panel during the week. Maybe I've got the wrong picture of the situation though. Rick |
#34
posted to rec.boats.cruising
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Suzuki DF4 vs. DF6
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#36
posted to rec.boats.cruising
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Suzuki DF4 vs. DF6
Richard Casady) said:
You underestimate the size and cost of a useful size solar panel by a large factor. Jere Lull wrote IF electric could serve his purposes, a little 12w panel would normally recharge 100 or so amps between weekends. That happens to be our setup and it's worked like a charm for a few years. (Our 12w panel cost a bit more than $10, though.) I thought he just wants something to free up his hands. Not an increase in power or range. Normally, you don't think of oars for range or to be used against headwinds or current or tides. None of which will he likely encounter on a small lake anyway (I'm thinkin' SMALL lake). And on a 14' 195 lb open boat? Even 2.5hp would be a big increase in power over oars..I'm just sayin', it takes very little mechanical effort to do the same job as oars on a small lake with a boat that small/light. -shrug- but maybe I'm misunderstanding what he's trying to accomplish. Rick |
#37
posted to rec.boats.cruising
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Suzuki DF4 vs. DF6
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#38
posted to rec.boats.cruising
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Suzuki DF4 vs. DF6
On Sat, 12 Apr 2008 20:21:53 GMT, Jere Lull wrote:
You underestimate the size and cost of a useful size solar panel by a large factor. Maybe a small one would do, and how much do they cost? I should have found out before I posted. Large factor may be too strong. It depends on some unknowns. I was going to disagree with your post, but luckily re-read it. IF electric could serve his purposes, a little 12w panel would normally recharge 100 or so amps between weekends. That happens to be our setup and it's worked like a charm for a few years. (Our 12w panel cost a bit more than $10, though.): Maybe. I never put it to the test, I just do a few calculations. Since you need 125 AH to charge the battery that much, and there are only 168 hours in a week, it would seem those are some strong healthy watts. 12 regular watts give you just one amp, and what about not always facing the sun squarely? Days _are_ longer during the summer, when most of the boating takes place, of course. Whatever, it might be enough, if the power required is small. We are both guessing about that all important figure In any case, that would require maybe an 8D battery, at 150 lbs, If you don't run it down below half. I figure a solar panel should be big enough to run a small ventilation fan, pump out any rainwater or leakage, and run an anchor light as well as just keep a battery charged.. However big that is. What do solar cells cost these days? I understand lead batteries have the lowest self discharge rate of any type rechargable battery, by the way. It is true that a battery will last longer if kept fully charged, maybe saving enough to cover the solar cells. [Dream on, nothing on a boat is cheap, let alone free] Casady. |
#39
posted to rec.boats.cruising
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Suzuki DF4 vs. DF6
On Sat, 12 Apr 2008 20:21:53 GMT, Jere Lull wrote:
On 2008-04-12 11:56:41 -0400, (Richard Casady) said: over the years. Btw, he could just leave the battery in the boat with a $10 solar panel during the week. You underestimate the size and cost of a useful size solar panel by a large factor. I was going to disagree with your post, but luckily re-read it. IF electric could serve his purposes, a little 12w panel would normally recharge 100 or so amps between weekends. That happens to be our setup and it's worked like a charm for a few years. (Our 12w panel cost a bit more than $10, though.) Something I haven't pursued, though, is that I recall someone saying that VWs are shipped with small solar cells to keep their batteries up, and that those cells can be gotten for very cheap. A few of those might be sufficient, and may cost in the $10 range. Then, along comes the three day weekend and the guy wants to use the boat three days in a row...... Or to put it another way, I know a lot of people who's only source of power is an internal combustion engine but I don't know anyone who's only source of power is a solar panel. Bruce-in-Bangkok (correct email address for reply) |
#40
posted to rec.boats.cruising
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Suzuki DF4 vs. DF6
Richard Casady wrote:
I have the 'calculator that takes no prisoners' the HP 48. It is big enough to fit a hand, and the keys are far enough apart. It has the conversion from HP to watts, and lots more. Highly recommended if you like to post on technical matters. [1 HP equals 745 watts].. Time to get that '48 calibrated, 1 Hp = 745.69987, even if you round it to three significant figures you 746. (I know, nitpicking) Cheers Marty |
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