electroman
Cadet
- Joined
- Jun 28, 2002
- Messages
- 6
i have a 1980 16 foot sylvan . beam 6 foot,package weight 1050 lbs ,it has ribs along the bottom of the hull ,made of rivieted allumiun, 30 degree bow rise. it has a 1987 mariner inline 4 45 hp(maybe it is 40 at the shaft ) , with a 2:1 gear ratio . it is used in fresh water and trailer when not used.<br /><br />when i use a 14" prop it is way out of the wot range 6000+ @20mph. the range is 5000-5500 from the manufacter . when i use a 15" prop the rpm is 5200 @20 mph (gps) this does not fall in the normal (prop curve ) <br /><br />the paint is staring to oxidies , the finish has a sandpaper FEEL . would waxing the boat have an positive effect ? if so what kind? tom@stereolimited.com