Fuel consumption question,

[Alpha22]

Does anyone have any rough ideas as to the fuel consumption of my engines??

They are 108hp Ford Dover based Thorneycroft marinised 6 pot diesels.

There are two of them in my Freeman 32.

at 5 knots they are running at about 1000 rpm. WOT 17 knots @ 2500 rpm. Goes over the hump at 12 knots.

Particularly interested in consumption at higher speeds. Any ideas??

 

[omega2]

40 litres per hour, or as we ancients say 8 gallons an hour, running both at about 2200, 15 knots with our Ford SABRE 180's in a 33' aquabell. If you can pull 2500 then run at 2300 ish thats what the book says.

 

[boddubbay]

Mine used about 5 gallons an hour at 2000 rpm per engine , a bit more if it was lumpy .
A lot less if it was very lumpy as we kept dropping to displacement speed.

 

[Alpha22]

Thanks guys...

 

[gordmac]

I have two non turbo D6s in a Levi corsair. About 40l/h at 15-16kn (2200-2300rpm) about 6l/h at 6-7kn (1200rpm)

 

[Firefly625]

I have two non turbo D6s in a Levi corsair. About 40l/h at 15-16kn (2200-2300rpm) about 6l/h at 6-7kn (1200rpm)

Slightly off op's topic, but nice boat!

 

[gordmac]

Thanks!

 

[Firefly625]

Thanks!

A picture would be nice.

 

[gordmac]

A picture might spoil the idea it is a nice boat but here goes!

 

[omega2]

A picture might spoil the idea it is a nice boat but here goes!

I remember her when she was at Bradwell Essex. Does she still have those Fords in her? We put her down as a Tremlett. (nearly)

 

[Firefly625]

I remember her when she was at Bradwell Essex. Does she still have those Fords in her? We put her down as a Tremlett. (nearly)

tops sides look a bit tremlett, but hull is certainly Levi Corsair...

 

[gordmac]

She was sold to me as a Tremlett but she is a Corsair, I haven't come across another one the same except in an old ad. Pair of NA six cylinder Fords so really they don't do the hull justice.

 

[Scarron]

Pair of NA six cylinder Fords so really they don't do the hull justice.

Afraid they won't, that hull needs plenty of power and really starts to come alive at the right side of 35 knots! Still nothing that a little re-engining project can't sort out. Is she on vee drives or straight shafts?

 

[omega2]

Afraid they won't, that hull needs plenty of power and really starts to come alive at the right side of 35 knots! Still nothing that a little re-engining project can't sort out. Is she on vee drives or straight shafts?

when I last saw her she was "shafted"

Thought I had a better picture!

 

[gordmac]

She is on straight shafts. I do wonder about re engining but I suspect it would be a rather expensive exercise. As would be feeding her diesel!

 

[omega2]

she is on straight shafts. I do wonder about re engining but i suspect it would be a rather expensive exercise. As would be feeding her diesel!

i f she is not broke why fix it??

 

[gordmac]

i f she is not broke why fix it??

Indeed. I am happy enough with a 15-16kn cruise but it doesn't really do the hull justice!