2431Re: [AtkinBoats] New member question.
- Sep 5, 2009Alan, I haven't quite decided yet. The MARS motor is made in China and I have had some bad luck with other brands and types of Chinese electrics in the past and have since avoided purchasing them. Denny Wolf, an electric boat enthusiast , has had good luck with the MARS product and recommended it to me however I am leaning more toward the Advanced DC Motors model no. A00-4009 made in Syracuse, NY and sold through EV America (Bob Batson) in Wolfeboro, NH. Bob's phone number is 603-569-2100 and he is most helpful and knowledgeable. This motor runs on 24 - 144 VDC ......at 36 VDC it develops 4 hp ......at 72 VDC, it will push a VW "Bug" at 45 mph (according to Bob). It is series wound like the starter motor on a car. It weighs 43 pounds which is heavier than the MARS. At this point I believe I will use the A00-4009 motor but won't need it for a couple of months. For batteries, I would like to use the Life-Line AGM (Applied Glass Mat) type but 6-volt units cost $300 each and Trojan T105's (open cell type) cost around $150 each and both types have basically the same run times fully charged. The run times, range, and current drain calculations given below were furnished by Bob Batson based on the 36 VDC motor and T105 batteries (6 cells @ 6 VDC each):Speed (MPH) 3.5 4.6 5.8 6.9Motor HP (total) 0.4 0.9 1.7 2.9Total Current (amps) 9.4 22.3 43.5 75.2Time (Hours) per pack 13.1 5.5 2.7 1.5Range (miles) 45.2 25.1 15.7 10.8The above calculations were based on my boat (the Victor Slocum) at a displacement of 900 pounds. I hope the above is of benefit to you.John Campbell----- Original Message -----From: Alan BomanSent: Friday, September 04, 2009 7:31 PMSubject: RE: [AtkinBoats] New member question.
John are you using the MARS electric motor ?
I am building the "Victor Slocum".....a 15' 10" design that has turned out to be 16' 4" .....and will be powered with inboard electric. I could not find a Palmer Baby Husky (6 hp) in GOOD CONDITION that was specified for it and believe that small diesels are too expensive, too noisy, too much vibration, and are basically overkill for a small boat like this. I am using 18 mm Okoume for the bottom reinforced with another panel of 18 mm Okoume in the area where 360 pounds of batteries will be located for 36 VDC operation. The frames are gusseted 18 mm Okoume, planking is glued lap 9 mm Okoume, stems, chines, outwales, inwales, breast hook, and quarter knees are laminated Honduran mahogany. I think I will use African mahogany for seats......or perhaps Northern White Cedar....haven' t decided on this yet. I'm using a 10" diameter X 6" pitch 3-blade Michigan Wheel bronze prop.
6300 Campbell Hill Road
Belton, Texas 76513
----- Original Message -----
From: second_floor_ loft
Sent: Thursday, September 03, 2009 7:41 PM
Subject: [AtkinBoats] New member question.
I am interested in building a boat for a large lake, shoal draft exploring. The boat must be rather low to clear a couple of low bridges. Locally, pontoons will not clear, bass boat types will. So far, I feel like the Rescue Minor will be a good choice, but it's a little longer than I can build comfortably in the space I have available. I like the plywood construction for trailering. Also trailering and launching would be easier with a shorter boat. Perhaps one or two passengers would be all that would be necessary.
So..Rescue Minor would be my choice, but longer than I prefer. Given the 900 or so designs in the Atkins portfolio I hope the members can help me find a similar but shorter design.
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