Reply
 
Thread Tools Search this Thread
 
Old 21 March 2005, 19:52   #1
Member
 
benc's Avatar
 
Country: UK - England
Town: Southampton
Boat name: Intrepid
Make: Tornado
Length: 7m +
Engine: Twin 150 Yamaha HPDI
MMSI: 235066402
Join Date: Mar 2005
Posts: 1,319
Send a message via Skype™ to benc
Running times

Hi all,

I have just gone halfs on a tornado 7.5m rib, twin 115hp engines.

I just wondered if anyone here had a rough idea what type of fuel consumption I am expecting out of this?

Thanks

Ben
__________________

__________________
benc is offline   Reply With Quote
Old 21 March 2005, 20:22   #2
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 4,962
Welcome benc. At a guess, about 3 mpg, but it depends how you drive it.
__________________

__________________
JW.
jwalker is offline   Reply With Quote
Old 22 March 2005, 10:39   #3
Member
 
benc's Avatar
 
Country: UK - England
Town: Southampton
Boat name: Intrepid
Make: Tornado
Length: 7m +
Engine: Twin 150 Yamaha HPDI
MMSI: 235066402
Join Date: Mar 2005
Posts: 1,319
Send a message via Skype™ to benc
Thanks for the welcome

When you say, "depends how I drive it"... how would I be driving it to only get 3mpg out of it?
__________________
benc is offline   Reply With Quote
Old 22 March 2005, 11:08   #4
Member
 
Country: UK - Channel Islands
Town: St Peter Port
Boat name: Black Pig
Make: XS-Ribs
Length: 9m +
Engine: 2 x 225hp Optimax
Join Date: Sep 2004
Posts: 375
Carefully!

I'd estimate that at cruising at 3/4 throttle with the occaisional blip at full throttle and plenty of just chugging around harbours and the like you'll hit your 3mpg.

You'd be suprised how much time you actually spend at 4-6knts getting to and from berths and just poodling around harbours etc.
__________________
Which part of "throw me the mooring line" didn't you understand!?
pettal is offline   Reply With Quote
Old 22 March 2005, 11:10   #5
Member
 
benc's Avatar
 
Country: UK - England
Town: Southampton
Boat name: Intrepid
Make: Tornado
Length: 7m +
Engine: Twin 150 Yamaha HPDI
MMSI: 235066402
Join Date: Mar 2005
Posts: 1,319
Send a message via Skype™ to benc
We are getting it moored in warsash - about 2 mins from the solent - so not much 6 knots work for us

Doubt we will hit full throttle, t'is quite a beast

How far is it to the isle of wight, does anyone know? - that will probably be the trip I do most
__________________
benc is offline   Reply With Quote
Old 22 March 2005, 11:28   #6
Member
 
Country: UK - England
Town: Southampton
Boat name: SMH Rib / War Shot
Make: Ribtec / Scorpion
Length: 4m +
Engine: 10hp Yam / 150hp opt
Join Date: Sep 2003
Posts: 1,894
RIBase
Training?

Quote:
Originally Posted by benc
How far is it to the isle of wight, does anyone know? - that will probably be the trip I do most
It's about 4 or 5 miles to Cowes. Big sandbank in the way though - best get a chart and some training.

Are the engines 2 stroke or 4 stroke or direct injection - that will make a big difference to the fuel consumption.

Have fun - if you're out over Easter and spot a yellow Scorpion give me a wave. I'm based in Hamble and should be out and about - can show you the way to Cowes.

Regards
__________________
Searider is offline   Reply With Quote
Old 22 March 2005, 12:12   #7
Member
 
benc's Avatar
 
Country: UK - England
Town: Southampton
Boat name: Intrepid
Make: Tornado
Length: 7m +
Engine: Twin 150 Yamaha HPDI
MMSI: 235066402
Join Date: Mar 2005
Posts: 1,319
Send a message via Skype™ to benc
Interesting, might take you up on that

4 Stroke Yamaha 115's
__________________
benc is offline   Reply With Quote
Old 22 March 2005, 12:36   #8
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 4,962
Quote:
Originally Posted by benc
Doubt we will hit full throttle, t'is quite a beast
I bet ya do.

At, or close to, full throttle you'll get simiar fuel consumption no matter what version of outboard you have. X amount of petrol will give Y amount of energy. The efficiency of the burning in IC engines is kinda similar.
__________________
JW.
jwalker is offline   Reply With Quote
Old 22 March 2005, 16:00   #9
Member
 
Country: UK - England
Town: Nr Faversham, Kent
Boat name: C Rider
Make: Avon
Length: 5m +
Engine: Yam 80
Join Date: Jan 2005
Posts: 479
Quote:
Originally Posted by jwalker
I bet ya do.

At, or close to, full throttle you'll get simiar fuel consumption no matter what version of outboard you have. X amount of petrol will give Y amount of energy. The efficiency of the burning in IC engines is kinda similar.
Rubbish my 2 stroke 90 burns about a third more than my mates 4str 80 for the same run. We have done several trips and it allways works out about that. The 2 boats are identicle and top speed is about the same as well. We were around portsmouth and surrounding over the weekend and I used about 70 litres where his used about 50.

I will eat my old hat if i'm wrong.

Tim'mers.
__________________
Searider - The Best 5.4 x Far
Swifty is offline   Reply With Quote
Old 22 March 2005, 19:18   #10
Member
 
Country: UK - Wales
Town: swansea
Boat name: Too Blue
Make: BLANK
Length: 8m +
Engine: Suzuki DT225
Join Date: Mar 2004
Posts: 12,791
Quote:
Originally Posted by Swifty
Rubbish my 2 stroke 90 burns about a third more than my mates 4str 80 for the same run. We have done several trips and it allways works out about that. The 2 boats are identicle and top speed is about the same as well. We were around portsmouth and surrounding over the weekend and I used about 70 litres where his used about 50.

I will eat my old hat if i'm wrong.

Tim'mers.
The guy said "at or near full throttle" - I bet on your runs you are not at full throttle all the time which could be causing the difference?
__________________

__________________
codprawn 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 04:48.


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