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Thread: Speed & Consumption

  1. #1
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    16th July 2003 - 05:23
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    Speed & Consumption

    Just to see what would happen I knocked 10 mph off my normal motorway speed - 90 down to 80 (mph). The result an extra 40 miles from a tank. I fill up twice a week and with petrol costing around 98p (near enough to NZD 3.00) a litre that adds up to quite a saving over a year.

    Speed certainly costs, motorway is only about 30% of my commute.

  2. #2
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    4th January 2006 - 19:30
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    except NZ open-road legal speed is the equivalent of 62MPH (100km/h)
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  3. #3
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    29th October 2005 - 16:12
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    Open speed limit here is 100km/h or 62mph at which speed my revs are 5200. I usually cruise at 6000rpm or 110km/h and there is a significant increase in fuel consumption once I hit 7000rpm plus when the bike comes "on cam". Caning it, I can actually watch the fuel guage dropping!

    I read a report in a UK mag about a comparo between the Honda Blackbird, Kawa ZX12R and the Suzuki Hayabusa where the Kawa broke its gearbox and was towed by the Honda. They drained the Honda's tank in 80 miles! Mind you they were towing at about 120mph!

    Petrol over here is around $NZ1.80+ per litre.

    Good to hear from the other side of the world! Keep us up to date with things over there!
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  4. #4
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    3rd October 2004 - 15:45
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    Quote Originally Posted by Edbear
    They drained the Honda's tank in 80 miles! Mind you they were towing at about 120mph!
    How about a Kawasaki H2 one up and drain the tank in 48 kms

  5. #5
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    4th July 2005 - 15:58
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    Quote Originally Posted by Edbear
    Caning it, I can actually watch the fuel guage dropping!
    When caning it, I prefer to watch the road instead . . .

  6. #6
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    Yeah, I remember fondly the commute in the UK - 90mph is what everyone does - the cops don't even bat an eyelid at that speed. Imagine the furore if everyone in New Zealand was doing 144kph in their everyday motorway driving.

    Odd when you think about it though - in the UK generally people have 1 to 1.5 litre cars (2 litre engines are for really wealthy buggers that can afford the fuel and insurance) and the speeds are up around 145kph - in New Zealand people drive cars with 4 litre engines but can't really exceed 110kph.

    Seems to be a little disparity between engine power and permitted speed.
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  7. #7
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    Quote Originally Posted by Big McJim
    Odd when you think about it though - in the UK generally people have 1 to 1.5 litre cars (2 litre engines are for really wealthy buggers that can afford the fuel and insurance) and the speeds are up around 145kph - in New Zealand people drive cars with 4 litre engines but can't really exceed 110kph.

    Seems to be a little disparity between engine power and permitted speed.
    There are even larger disparities in the skill level of the average motorist, and the quality of roading, between the two countries.

  8. #8
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    Quote Originally Posted by WRT
    When caning it, I prefer to watch the road instead . . .


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  9. #9
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    Quote Originally Posted by TLDV8
    How about a Kawasaki H2 one up and drain the tank in 48 kms


    I doubt even the Boss Hoss could match an H2 for fuel consumption!
    You don't get to be an old dog without learning a few tricks.
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  10. #10
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    Well with the price of fuel probably going to go up again soon, my Ford Orion cage wallops in about $85 a week on 91. I'm kinda counting my blessings that I don't have to commute from Takanini to Birkenhead anymore!

    I'm not heavy on the pedal since I'm a conservative cager, but I can't help wondering about those petrol slurpers you hear thudding past with the bass on full!

    This is an interesting thread, would like to hear more about those UK riding experiences!
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  11. #11
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    Remember the 80 km speed limit?

    About 1984 or 5 the speed limit was raised from 80 to 100 km/hr. All of a sudden my fuel consumption of my CNG powered car shot up. I took it in to be tuned and it came back with a clean bill of health. About 80km/hr and less, aerodynamics don't play much part in fuel consumption but above that, it increases, markedly, thus increasing fuel consumption.
    Result - if you want good fuel consumption, stay at 80 km.
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  12. #12
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    13th March 2006 - 22:11
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    Quote Originally Posted by fishb8nz
    if you want good fuel consumption, stay at 80 km.
    Yeah but that's no fun is it? On my old RG150 I could get over 300km from a tankfull if I didn't exceed the speedlimit at all. But if I had fun over the same roads (motorway and suburban) the tank would be empty within 180 kms.

  13. #13
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    16th July 2003 - 05:23
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    Speed on the motorways is pretty high. At 90 I'm usually in the middle lane. Cars will often pass as if I was standing still. Statistically motorways are still the safest place to travel, despite the speed.

    Anyway today I tried to stick to 70, the speed limit. Noticed a lot more of the scenery and it's a pretty relaxing ride. Sometimes it's just too slow and a burst of speed is needed to get the gap or overtake without holding anyone up. Not sure whether I'll be able to keep it up but it's an interesing variation.

  14. #14
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    Quote Originally Posted by fishb8nz
    About 1984 or 5 the speed limit was raised from 80 to 100 km/hr. All of a sudden my fuel consumption of my CNG powered car shot up. I took it in to be tuned and it came back with a clean bill of health. About 80km/hr and less, aerodynamics don't play much part in fuel consumption but above that, it increases, markedly, thus increasing fuel consumption.
    Result - if you want good fuel consumption, stay at 80 km.
    Bear in mind that in 1984-5 cars had about as much aerodynamic styling as a yawning hippo - modern cars should be okay up to 100kph and there will be a marked difference in fuel consumption between a fully faired bike and a naked one above 80kph.
    In space, no one can smell your fart.

  15. #15
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    Quote Originally Posted by gijoe1313
    Well with the price of fuel probably going to go up again soon, my Ford Orion cage wallops in about $85 a week on 91. I'm kinda counting my blessings that I don't have to commute from Takanini to Birkenhead anymore!

    I'm not heavy on the pedal since I'm a conservative cager, but I can't help wondering about those petrol slurpers you hear thudding past with the bass on full!

    This is an interesting thread, would like to hear more about those UK riding experiences!
    Go and try the place - the roads are really quite good (especially in Scotland - quieter and twistier) the big problem is the weather. I find Auckland to be very hot and dry by comparison..and get your full licence before you go as learners are limited to 125cc. You should have seen my face when I found out I could have a 250 on a learner licence - I thought it was Christmas all over again!
    In space, no one can smell your fart.

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