Friday, June 1, 2012

Re: [Electric Boats] Electric Rowboat for 100 mile race

 

Tom,

This sounds like great fun! I competed and won the Wye Island Electric Boat Marathon last year. 25 miles at 10 mph using a 1967 15' Starcraft aluminum utility powered by a Torqeedo 4R with the hi pitch prop and supplied by 16 cell LiFePO4 160 Ah battery. 

Can you please send me info on the race in North Carolina? I may be interested in entering.
Ned



ERGED ON
1967 STARCRAFT UTILITY
15' X 5' OVERALL 14.2' X 4.5' LWL
HULL: 300 LBS
BATTERY: 200
MOTOR: 50
MISC: 50
TOTAL: 600 LB
CAPTAIN: NED FARINHOLT PORT: WINCHESTER, VA

SPEED VS POWER
800 LBS DISPLACEMENT
KW MPH
0.2 3.5
0.4 4.5
1.0 6.3
2.0 8.5
3.0 10.5
4.0 12.0

RANGE VS. SPEED
800 LBS DISPLACEMENT
MPH MILES
10 25
7 40
5 70
4 100

On May 31, 2012, at 9:47 AM, tom_the_rower wrote:

 

I would like to participate in a 100 mile race in the outer banks of North Carolina in September. My 20 ft, high sided sliding seat rowboat, with 10 ft oars is the primary propulsion, and I currently run a 12 volt trolling motor with a long shaft and a group 27 deep cycle battery. I row every night, big wind or flat water 8-10 miles and have done a 20 mile day. I plan to add a pop up sail for when the wind is with me and also a parafoil sled kite as well. The rules state that I can use electric, but cannot recharge from shore, only solar. I would start on a Friday morning and must finish by Sunday at noon. Most people seem to paddle/sail 20 hours per day and sleep for 4, so some night time usage is anticipated. I would probably try to limit my usage to oncoming wind, which is tough to row in, unless LIPO 48 v would allow me to make the trip using the motor all the time. In either case, I will row continuously, so again, electric is not the only means of propulsion.

I understand that Torqueedo initially came out saying their props were super efficient, but I have heard that that was just marketing.

My boat weighs 180 lbs, plus I weigh 180 plus maybe 50 pounds of gear for 3 days.

Any advice you can offer is most welcome.

Tom the rower


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