My 2005 Q/S 560 has a 2009, Merc 60hp efi on the back. along with a 6hp
When it's it's just ME and my WIFE. I feel that It could do with just a little more power and I also feel that we needing max power nearly all the time. Here are the figures for 2 people with a full tank and an aux 6hp on the back.
This is with just me and my Wife.
2000 rpm = 5-2 knots per hr
3000 rpm = 6-9 kph
3800 rpm = 9-9 kph
5000 rpm = 16-2 kph
5800 rpm = 18-8 kph
The speeds were taken from my chartplotter and I took photo's of the rev clock and chartplotter together . I dont know what happend to the 4000 rpm ?....It was a calm sea and we were running as the tide was on the turn against us .
When we had my son at 11 stone and his mate at 17 stone I could NOT get the boat on the plane Think I got to 10 knots, She planes around 12 knots.
The plate on the boat says Max engine = 75hp @ 185kgs. Max people = 5.
If I change the engine there seems little point me going to a 75, 4stroke I dont think I will achieve anything there.
My other option is to go for the etec 90 hp which is the same cc 1296cc as the etec 75 I think. They both weight in at 180kgs My aux merc weighs in at 26kgs making a total transom weight of the etec 90 and the 6 hp aux = 173kgs...
Thats 12kgs within the q/s recommendations. My only worry is going over the q/s horsepower recommendations by 15hp.
Am I asking too much of this q/s 560 ? I feel that by having an etec 90 I will be running at far less revs when there is just me and the wife. And if we are joined by friends or family we will still be able to get her on the plane. Could someone please give me some guidance ? Many Thanks, and yes Im open to any criticism :bleh:
When it's it's just ME and my WIFE. I feel that It could do with just a little more power and I also feel that we needing max power nearly all the time. Here are the figures for 2 people with a full tank and an aux 6hp on the back.
This is with just me and my Wife.
2000 rpm = 5-2 knots per hr
3000 rpm = 6-9 kph
3800 rpm = 9-9 kph
5000 rpm = 16-2 kph
5800 rpm = 18-8 kph
The speeds were taken from my chartplotter and I took photo's of the rev clock and chartplotter together . I dont know what happend to the 4000 rpm ?....It was a calm sea and we were running as the tide was on the turn against us .
When we had my son at 11 stone and his mate at 17 stone I could NOT get the boat on the plane Think I got to 10 knots, She planes around 12 knots.
The plate on the boat says Max engine = 75hp @ 185kgs. Max people = 5.
If I change the engine there seems little point me going to a 75, 4stroke I dont think I will achieve anything there.
My other option is to go for the etec 90 hp which is the same cc 1296cc as the etec 75 I think. They both weight in at 180kgs My aux merc weighs in at 26kgs making a total transom weight of the etec 90 and the 6 hp aux = 173kgs...
Thats 12kgs within the q/s recommendations. My only worry is going over the q/s horsepower recommendations by 15hp.
Am I asking too much of this q/s 560 ? I feel that by having an etec 90 I will be running at far less revs when there is just me and the wife. And if we are joined by friends or family we will still be able to get her on the plane. Could someone please give me some guidance ? Many Thanks, and yes Im open to any criticism :bleh: