Reply
 
Thread Tools Search this Thread
 
Old 07 January 2010, 12:24   #31
Member
 
Channel Ribs's Avatar
 
Country: UK - Channel Islands
Town: Alderney
Length: no boat
Join Date: Sep 2006
Posts: 3,047
Quote:
Originally Posted by Leapy View Post
...and a good fun/ ratio
Is this a good time for me to mention 70p a liter for blue petrol?

__________________

__________________
Channel Ribs is offline   Reply With Quote
Old 07 January 2010, 13:02   #32
RIBnet supporter
 
Country: UK - England
Town: South Coast
Length: 7m +
Join Date: Apr 2008
Posts: 1,445
With the 5.7m Valiant & 115 Opti at 25kts I averaged 1.5mile/ltr

If I recall correctly, it was only when at 32kts+ was it ever getting near 1:1 and that with 4 POB and a reasonably full tank.

Steve
__________________
250kts is offline   Reply With Quote
Old 07 January 2010, 13:15   #33
Member
 
Channel Ribs's Avatar
 
Country: UK - Channel Islands
Town: Alderney
Length: no boat
Join Date: Sep 2006
Posts: 3,047
Summary so far, with estimated 1:1 speeds in bold at the end:-

Zubenelgenubi: 30nm:25L @30kn (90 2/S) = 0.83 lpm 33kn
9D280: 35nm:30L @20kn (25 2/S) = 0.86 lpm 22kn
9D280: 24nm:30L @mixed (55 2/S) = 1.25 lpm 20kn
Leapy: 46nm:26L @20kn (90 4/S) = 0.57 lpm 28kn
Cypman: ?nm:? @30kn (140 4/S) = <1 lpm 35kn
TSM: ?:? @20kn (60 E) = 0.75 lpm 25kn
GordyP: ?:? @40kn (2x 150 Es) = 1.3 lpm 38kn
250kts: ?/? @25kn (115 2/S) = 0.67 lpm 34kn
Matt h: ?/? @? (90 2/S) = 0.84 lpm

Average 1:1 speed is now 29 knots of boating joy.

Not sure what to do with Nasher's data?
__________________
Channel Ribs is offline   Reply With Quote
Old 07 January 2010, 13:19   #34
Member
 
Country: UK - England
Town: Bristol
Make: Ribcraft
Length: 5m +
Engine: Yamaha
Join Date: May 2006
Posts: 4,194
yam 90 2/s,

1 person full tank of fuel (71 Litres held)

45 Nautical miles 38L used.
__________________
matt h is offline   Reply With Quote
Old 07 January 2010, 13:27   #35
Member
 
Channel Ribs's Avatar
 
Country: UK - Channel Islands
Town: Alderney
Length: no boat
Join Date: Sep 2006
Posts: 3,047
Quote:
Originally Posted by matt h View Post
yam 90 2/s,

1 person full tank of fuel (71 Litres held)

45 Nautical miles 38L used.
Thanks Matt, what sort of speed would you say?
__________________
Channel Ribs is offline   Reply With Quote
Old 07 January 2010, 13:34   #36
Member
 
Leapy's Avatar
 
Country: UK - England
Town: Sheepy Parva
Boat name: Sadly Sold
Length: no boat
Join Date: Sep 2008
Posts: 1,728
Quote:
Originally Posted by malthouse View Post
Is this a good time for me to mention 70p a liter for blue petrol?

Your a very nice man...you sold me a very nice Garmin map card thingy at a very nice price...you post very nice photographs of things on the sea bed that I've never seen before and I have no idea what they are.

Your comments on petrol prices, however, suck
__________________
Leapy is offline   Reply With Quote
Old 07 January 2010, 13:40   #37
Member
 
Channel Ribs's Avatar
 
Country: UK - Channel Islands
Town: Alderney
Length: no boat
Join Date: Sep 2006
Posts: 3,047
Quote:
Originally Posted by Leapy View Post
Your comments on petrol prices suck
True, not only that but they are not really accurate. That price is only available to the "big islanders".

Cue a good gloat from Erin....
__________________
Channel Ribs is offline   Reply With Quote
Old 07 January 2010, 14:02   #38
RIBnet supporter
 
Erin's Avatar
 
Country: UK - Channel Islands
Town: A large rock
Boat name: La Frette
Make: Osprey Vipermax
Length: 6m +
Engine: 200 Suzzy
Join Date: May 2004
Posts: 2,830
Time to make a post then I feel

Well, it's varied over the last few years from about 55p IIRC to 62p on my last fill up in October (and it's green BTW down here). Gloat over. But anyway there was a time when your road fuel was the same price as our duty free fuel, so you had it quite good for a while.


A few numbers for you from an Osprey Vipermax 6.5 with Suzuki DF200 (heavy set-up admittedly)

Average fuel consumption over this last seasons 270 miles = 370 litres = 1.37 l/nm (normal varied driving - and yes I'm disappointed that's all we managed mile wise though I suppose it still amounts to a fair few 14 mile trips to France).

Slightly more accurate test over a shorter period resulted in 122 nm = 150 l = 1.23 l/nm

A short isolated/instantaneous consumtion test based on the NMEA engine gauge showed

25knots burning 4.5 mpg
30kts @ 4 mpg
40kts @ 2.8 mpg.

Needless to say I don't cruise at 40+ too often, partly because the other half doesn't like the speed, and partyly because I don't want to damage the French cakes and goodies we normally have on board after our Continental Supermarket dash!
__________________
Erin is offline   Reply With Quote
Old 07 January 2010, 14:11   #39
Member
 
Channel Ribs's Avatar
 
Country: UK - Channel Islands
Town: Alderney
Length: no boat
Join Date: Sep 2006
Posts: 3,047
Quote:
Originally Posted by Erin View Post
Time to make a post then I feel
Oooo, your such a lurker.

When are you organising a Jersey RIB.net meet then?
__________________
Channel Ribs is offline   Reply With Quote
Old 07 January 2010, 14:16   #40
Member
 
Channel Ribs's Avatar
 
Country: UK - Channel Islands
Town: Alderney
Length: no boat
Join Date: Sep 2006
Posts: 3,047
Summary so far, with estimated 1:1 speeds in bold at the end:-

Zubenelgenubi: 30nm:25L @30kn (90 2/S) = 0.83 lpm 33kn
9D280: 35nm:30L @20kn (25 2/S) = 0.86 lpm 22kn
9D280: 24nm:30L @mixed (55 2/S) = 1.25 lpm 20kn
Leapy: 46nm:26L @20kn (90 4/S) = 0.57 lpm 28kn
Cypman: ?nm:? @30kn (140 4/S) = <1 lpm 35kn
TSM: ?:? @20kn (60 E) = 0.75 lpm 25kn
GordyP: ?:? @40kn (2x 150 Es) = 1.3 lpm 38kn
250kts: ?/? @25kn (115 2/S) = 0.67 lpm 34kn
Matt h: ?/? @? (90 2/S) = 0.84 lpm
Erin: 270nm/370L @mixed (200 4/S) = 1.37 lpm 25kn
__________________

__________________
Channel Ribs is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 12:09.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.