SailNet Community - View Single Post - electric trolling motors for small sailboats?
View Single Post
  #11  
Old 05-27-2008
tjaldur's Avatar
tjaldur tjaldur is offline
Senior Member
 
Join Date: Mar 2008
Location: Oslo, Norway
Posts: 165
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
tjaldur is on a distinguished road
I use a 30 pound pushpower trolley (probably the smallest) on my inflatable dinghy. The consumption is about 230 watt. I use two 80 amp batteries. One in the dinghy, the other on board the ship for charging. One charge last for 4 hours use. For charging I use a 2,5 KW gas-generator.

If were not that I also need to use the generator for a whole lot of other charging purposes, like charging the batteries for use with refrigerator, TV, computers etc. I would probably spend more gasoline, make more noyce charging the batteries for the dinghy than i would using a small 5 -6 HP two-stroke for propulsion.

I believe you need to make an input/output calculation of the charge/use of current. It is the charging capacity that will define the distance of "the point of no return".
__________________
Use your head, ram the wall till it falls.
Reply With Quote Share with Facebook