Outboards
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- Inlägg: 5
- Blev medlem: 09 mar 2008 21:18
Outboards
I've not sailed an IF Boat before so this will be 1st season with Elpenor. The previous owner used an outboard on a bracket but I would prefer to use the lazerette. However size seems to restrict me to about 6hp - is this a big enough engine - I will be sailing in tidal waters.
David Lines
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A 6 hp motor with a well tuned propeller will give you about 6 knots through water if there is no wind ahead. A more powerful engine will also give you 6 knots, as this is the maximum displacement speed for the IF-boat.
However, the stonger motor will also give you max speed if there is some wind. So for example, an 8 hp motor will give you about 6 knots, even if the wind is about 6-7 knots ahead.
If the tide current is near 6 knots or more, it will not be possible to override the current and make speed over ground, even with the strongest motor.
However, the stonger motor will also give you max speed if there is some wind. So for example, an 8 hp motor will give you about 6 knots, even if the wind is about 6-7 knots ahead.
If the tide current is near 6 knots or more, it will not be possible to override the current and make speed over ground, even with the strongest motor.
Marek, IF-båt SWE-829 "Ingela" från Lagunen i Malmö
Medlem i IF-båtförbundet sedan 1985
IF-båtägare sedan 1983
Medlem i IF-båtförbundet sedan 1985
IF-båtägare sedan 1983
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- Inlägg: 5
- Blev medlem: 09 mar 2008 21:18
Hi David,
I have a 6Hp Hi-Thrust Yamaha 4s/t outboard. Its a little heavy for my liking at 50kg but it will run my M26 into head wind and small sea's at 5-6 knots without working too hard.
On flat water, it will quietly move the boat at 6 knots on 1/4 throttle and use less than 1 litre of fuel / hour. Not bad!
Aparently the 'Hi-Thrust' 4 s/t outboards make a significant difference for heavier boats at slow speeds, such as displacement sailing boats.
Cheers
Matt
I have a 6Hp Hi-Thrust Yamaha 4s/t outboard. Its a little heavy for my liking at 50kg but it will run my M26 into head wind and small sea's at 5-6 knots without working too hard.
On flat water, it will quietly move the boat at 6 knots on 1/4 throttle and use less than 1 litre of fuel / hour. Not bad!
Aparently the 'Hi-Thrust' 4 s/t outboards make a significant difference for heavier boats at slow speeds, such as displacement sailing boats.
Cheers
Matt
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- Inlägg: 5
- Blev medlem: 09 mar 2008 21:18
Outboards
Matt - thanks. looks like i will go for a Mariner with remote shift as this fits in the locker.
David Lines