Sounds great Bill, one minor point could be added that a total draw down on batteries, might make for a replacement more often. Mostly I hear of 50% battery use before some damage over time. I would bet that any kid, (or adult) would "screw it on" for the thrill of faster, and have a problem at some point, wind picking up etc. Maybe a small alarm timer to alert the driver that a return trip is imminent, settable for 1/2 trip, wind, current or lunch with shorter cruise times works for me. Hate to miss cocktail hour, or run low on the return leg. I also have a volt gauge to watch, on all boats – but the alarm works better for me.
Later, ------- Cal
Sent: Friday, August 28, 2015 8:40 AM
Subject: Re: [Electric Boats] 1000W Scooter motor plus Gamefisher outboard leg?
I get UBS 12v/50 AH wheel chair batteries, 25 lbs about $90. delivered free
Bill Hopen - www.billhopen.com
Hopen Studio Inc - 227 Main St., Sutton WV 26601
304 -765-5611 billhopen@yahoo.com
Hopen Studio Inc - 227 Main St., Sutton WV 26601
304 -765-5611 billhopen@yahoo.com
From: "yotatruck91@yahoo.com [electricboats]" <electricboats@yahoogroups.com>
To: electricboats@yahoogroups.com
Sent: Saturday, August 22, 2015 10:23 AM
Subject: [Electric Boats] 1000W Scooter motor plus Gamefisher outboard leg?
I've been dabbling cheap Chinese scooters motors lately planning for a battery powered ride-on toy build for my daughter and I found that a 1000W 36V motor can be had for about $100 shipped. A controller and Hall effect hand throttle is another $60 or so. With a rated speed of 3000 RPM directly coupled to the Gamefisher leg I'll get 1500 RPM at the prop (7 x 6.25" prop). A prop calculator gives me a theoretical speed of 5.8 knots-hull speed for my canoe should be 5.5, so I'm hoping this will be the sweet spot.
Three 35Ah SLA wheelchair batteries would give me about an hour and a half of runtime-the motor draws 36A @ 36V @ 3000 RPM under load. I figure 30 minutes of runtime across the lake, 30 minutes of puttering around, and 30 minutes to get back. Upgrading to the next size, 55Ah batteries would give me nearly 2.5 hours runtime, but the cost and weight go up dramatically. The 55s are 16lbs heavier and nearly $70 more per battery. Just looking for a real world math check as I'm pretty excited about this option.
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Posted by: "cal" <h20dragon@centurytel.net>
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