Boat owner again

[Divemaster1]

Did 4 hours at 8.5knts

6 hours at 18-20knts

Excellent stuff Jez .... glad she performed well for you and safe onward journey!

Would be interesting to hear at what RPM you achieved these speeds.... a small tweak one way or another, may make all the difference .... but suspect you will need a few more hours running at single speed (and measure) before you can determine with reasonable accuracy.... or take a proper testing day out there with cans of fuel to draw from....

 

[Deleted User YDKXO]

Just a thought but wouldn't Jez's purchase and delivery trip make a good MBY story?

 

[AIDY]

Just a thought but wouldn't Jez's purchase and delivery trip make a good MBY story?

yes.... how much do they pay..... enough to motor across GDL

 

[Deleted User YDKXO]

yes.... how much do they pay..... enough to motor across GDL

No I think he'll have to sell his story to Hello magazine to get that much!

 

[rafiki_]

No I think he'll have to sell his story to Hello magazine to get that much!

 

[Whitelighter]

Excellent stuff Jez .... glad she performed well for you and safe onward journey!

Would be interesting to hear at what RPM you achieved these speeds.... a small tweak one way or another, may make all the difference .... but suspect you will need a few more hours running at single speed (and measure) before you can determine with reasonable accuracy.... or take a proper testing day out there with cans of fuel to draw from....

8.5 knots was 1000rpm on both
The planing cruise at 1800 rpm gave 18-20knts is a rolling sea.

I think I'm addicted to these engines - they just sing when you get it right, and sound like a race boat when you start it up.

 

[BartW]

8.5 knots was 1000rpm on both
The planing cruise at 1800 rpm gave 18-20knts is a rolling sea.

I think I'm addicted to these engines - they just sing when you get it right, and sound like a race boat when you start it up.

Just out of curiosity, how much is max Rpm? Did you try to get that during sea trial? Speed?
How much is consumption at 18-20kn ?

 

[Divemaster1]

8.5 knots was 1000rpm on both
The planing cruise at 1800 rpm gave 18-20knts is a rolling sea.

I think I'm addicted to these engines - they just sing when you get it right, and sound like a race boat when you start it up.

Sweet-spot may actually be 1850 RPM ..... ... and from then on, you may gain just in excess of 1 knot per 100 RPM up to WOT at 2300, but with fuel economy to match....

 

[Divemaster1]

Just out of curiosity, how much is max Rpm? Did you try to get that during sea trial? Speed?
How much is consumption at 18-20kn ?

Bart, WOT should be 2300 and a rough guess as sofa observer (pending on propeller load for Seralia) is around £130 - 140 L/Hr for both engines at 1800 RPM..... assuming clean hull etc., etc.... Actual fuel consumption may have been a bit higher due to sea state, hull condition etc.