Re: motor weights, too much?
I had a Yammy 175 carbed two stroke, it was about 420 lbs or so and I thought that was too much weight on my 20CC. I repowered with a Etec 115. Weight is good, no water comming in the scuppers.
I was able to do a fishing run yesterday two people and gear, 12 gallons of fuel, traveling about 15.5 miles on about 5 gallons, about 3 mpg. Light trade wind 10-15 knots, seas 4-6 feet 8 seconds, so only cruised at moderate speed, probably about 18 mph.
I tested it out today with a GPS in the bay, small chop and here are the results I got. Not all measurements were the same run and exact same conditions so there is some variablity but its a good ball park. 15 pitch SS viper prop.
RPM Speed
1000 4
1150 5
1200 4.7
1500 6.4
1700 6.1
2000 7.1
3000 18
3500 20
3600 22
4100 26
5200 36.5
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