Volvo D9 Servicing.

[Portofino]

In neutral?

You wouldn’t get the fuel burn or load in N .
Thats the whole point the props are matched to boat , it’s weight it’s drag ( allegedly more with its rough AF ? ) and a bit over for exuberance cruising stores and a tad of seasonal fowling .

Idea is to see the manufacturers figures for fuel burn equal 100 load at slightly over rated rpm .Which it does spot on .

If they can’t for what ever reason meet , esp if it’s short of rpm say I hit 2080 , 120 short them it’s over propped or overloaded .
Or 100 % load chimed in at 1850 rpm along with 140:L/ hr = then it’s severely overloaded .Needs a clean or if clean further investigation(s)

 

[Mr Googler]

Sumlog was on 0 is all ??

 

[Croftie]

You shouldn’t get the fuel burn or load in N .

There, corrected it for you

 

[Portofino]

Sumlog was on 0 is all ??

Its never worked .Use gps .

 

[petem]

View attachment 141901
Anytime .Rated is 2200 rpm for the inline 6 s .The L /hr and loads are bang on manufacturers data .Engines are circa Dec 2002 on the name plates .
On 1050 hrs .Air temp 30*c sea temp 26 * .

Is that 140l/h per side?

 

[Portofino]

Sumlog was on 0 is all ??

Its never

Is that 140l/h per side?

Yes P .
Normally we cruise around 80-95 / side .