Fuel Efficiency
Discussion
Guys,
Any tips on increasing fuel efficiency in a CBR600F?
The bee-hatch is running 33mpg at the moment, I could get more out of a Lada!
I'm having the carbs balanced, taking off the race can and replacing it with a street legal piece.
I'm running hi-octane fuel.
And i'm ready for the 'roll off the throttle' or 'leave it at home' replies - it's not happening
Any tips on increasing fuel efficiency in a CBR600F?
The bee-hatch is running 33mpg at the moment, I could get more out of a Lada!
I'm having the carbs balanced, taking off the race can and replacing it with a street legal piece.
I'm running hi-octane fuel.
And i'm ready for the 'roll off the throttle' or 'leave it at home' replies - it's not happening
You know it makes sense....Can't imagine removing the race can would make much difference, if you lose some power by removing it you will probably just twist the throttle more to compensate, surely a correctly jetted free-flowing can is more efficient?
Best way is to give it less throttle or get a more economical bike, one of these maybe;
Seriously though there are many bikes that give better mpg, my 916 does 45mpg if not thrashed too hard.
Best way is to give it less throttle or get a more economical bike, one of these maybe;
Seriously though there are many bikes that give better mpg, my 916 does 45mpg if not thrashed too hard.
It's certainly possible that the race can might lose you a bit of fuel efficiency, but down to 26mpg - seems doubtful. My SV does about 45mpg commuting and the Falco maybe 33 - much more out of town for both. Unless you ride everywhere in 1st and 2nd, there has to be something wrong.
Steve.
Steve.
One of the things that has the biggest impact on fuel consumption is ‘how’ you use the throttle, especially on a CV carb’d bike. If you open the throttle past about 1 third open then you will start to use quite a lot more fuel as you start to use the main jets as well as the pilot jets. Make your acceleration gentle and controlled and concentrate on maintaining momentum and you will notice your fuel consumption improve.
black-k1 said:
One of the things that has the biggest impact on fuel consumption is ‘how’ you use the throttle, especially on a CV carb’d bike. If you open the throttle past about 1 third open then you will start to use quite a lot more fuel as you start to use the main jets as well as the pilot jets. Make your acceleration gentle and controlled and concentrate on maintaining momentum and you will notice your fuel consumption improve.
Not really an option at the moment. I'd like to keep it at 5k revs, but theres a huge flatspot there at the moment. When I fit the road exhaust, this may clear up, so hopefully i'll be able to rev it less.JackHolroyde said:
Thats what i'm thinking - fuelling.
What can i do to sort it?
Its carbs, not FI.
I generally keep it at about 6-7000 revs, so not revving the nuts off it, but not ticking over either.
You say it has a replacement end can? Has it been dynojetted? What can i do to sort it?
Its carbs, not FI.
I generally keep it at about 6-7000 revs, so not revving the nuts off it, but not ticking over either.
Does it run a bit rough, with no torque low down?
Get it into a decent independent dealer and get them to re-jet it.
JackHolroyde said:
black-k1 said:
One of the things that has the biggest impact on fuel consumption is ‘how’ you use the throttle, especially on a CV carb’d bike. If you open the throttle past about 1 third open then you will start to use quite a lot more fuel as you start to use the main jets as well as the pilot jets. Make your acceleration gentle and controlled and concentrate on maintaining momentum and you will notice your fuel consumption improve.
Not really an option at the moment. I'd like to keep it at 5k revs, but theres a huge flatspot there at the moment. When I fit the road exhaust, this may clear up, so hopefully i'll be able to rev it less.On a 600/4 the peak torque will be a lot higher than that, I'd anticipate 8-9k rpm, maybe a little more - it's 7500 rpm on my SV and that only revs out to 10.5k. A 600/4 that goes on to 12/13 k will peak higher again. The dead spot at 5k is possibly for manufacturer noise testing, it's there on the SV too and goes away with a can. A free flowing can can reduce the gas speed in the exhaust system at lower rpms if the bore is too big, which will cost torque as the cylinder filling is poorer. Standard exhaust systems on bikes are often very good and hard to improve upon, apart from on noise grounds.
Steve.
Steve.
Edited by Steve_T on Thursday 29th November 17:38
i have never bothered working out fuel efficiency in either a car or on a bike!
From memory it is 4.5 litres to the Gallon? If this is right - both my Bandit (with Pillion) and Gixer do 41 mpg. Bandit without pillion does 48!
Pretty good going I think - and no bikes are ridden frugally!
From memory it is 4.5 litres to the Gallon? If this is right - both my Bandit (with Pillion) and Gixer do 41 mpg. Bandit without pillion does 48!
Pretty good going I think - and no bikes are ridden frugally!
Edited by Fats25 on Thursday 29th November 17:34
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