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question related to fuel consumption

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  • #16
    My experience on stunner

    I have tested my friend's stunner before my purchase.
    My experience with different rpms and FE achieved are below; all test done on highway, on top gear:
    riding upto 4k rpm=72kmpl
    riding upto 6.5k rpm=58kmpl
    riding above 7k rpm upto 8.5k rpm = 38kmpl.
    Bike was fully stock, total payload was around 145kg, carb was at factory setting, no sudden acceleration or deacceleration, method used to measure FE was full tank one.
    http://www.facebook.com/ateesh.kumar

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    • #17
      ^ Then, let me test my Pulsar once too... I think I should get a fuel container from Anjita Bajaj, which attaches to the carb. This way testing would be easier.

      I guess its the tyres' rolling resistance and aerodynamics that make the mileage less. Even someone on a CBR1000RR forum says that he gets 44 mpg on 6000 rpm. Any rpm above that and he loses on this figure...
      ---
      Brotherhood, Rules, Freedom. Xbhp.
      Indian riding = Alertness, Anticipation and Adjustment.

      Comment

      • #18
        Aerodynamics play very important role for achieving top speed.. So i guess its causes FE drop even at max torque spot.
        Dont know about rolling resistance of tyres though.. It stays constant regardless of speed.. Am I wrong??
        http://www.facebook.com/ateesh.kumar

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        • #19
          Originally posted by Honda_CBF View Post
          Aerodynamics play very important role for achieving top speed.. So i guess its causes FE drop even at max torque spot.
          Dont know about rolling resistance of tyres though.. It stays constant regardless of speed.. Am I wrong??
          Rolling resistance is mostly affected by path/ surface, temperature and the treads.
          Speed might affect it, I don't know exactly.
          ---
          Brotherhood, Rules, Freedom. Xbhp.
          Indian riding = Alertness, Anticipation and Adjustment.

          Comment

          • #20
            Originally posted by Honda_CBF View Post
            I have tested my friend's stunner before my purchase.
            My experience with different rpms and FE achieved are below; all test done on highway, on top gear:
            riding upto 4k rpm=72kmpl
            riding upto 6.5k rpm=58kmpl
            riding above 7k rpm upto 8.5k rpm = 38kmpl.
            Bike was fully stock, total payload was around 145kg, carb was at factory setting, no sudden acceleration or deacceleration, method used to measure FE was full tank one.
            what were the speeds at those rpms?

            Comment

            • #21
              Originally posted by pradeepa View Post
              what were the speeds at those rpms?
              4k rpm = 41 something
              6k = 62
              6.5k rpm = 67
              8k = 85 something
              These are (analog) speedo figures.
              http://www.facebook.com/ateesh.kumar

              Comment

              • #22
                @jd666... There have been numerous tests, the most recent that i remember in TG or somewhere, that the sooner you get to top gear ( accelerating properly, not just upshifting as soon as you can ), the more efficient your driving/riding is.
                The bold ones made me lol....

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                • #23
                  i have a pulsar 150 2003 model...the classic one.
                  i run 25 psi and 28 psi pressure in my tyres front and back respectively
                  i weight 60 kgs and never ride with a pillion
                  i upshift at 2.5k rpm and once in 5th i dont cross 2.6k rpm which equates to a speed of 40kmph. i am usually in 5th gear by the time i reach 30kmph.the throttle opening is a mere 2 -4degrees never more..
                  i make sure i dont lug the engine by not whacking open the throttle under high load and low rpm conditions.

                  the advantage of such slow riding is that no one is moving slower so automatically you dont brake much.

                  with this kind of riding in city conditions i consistently get 80kmpl and never below 75

                  the last time i checked this by the following method.
                  i emptied out the tank and put in exactly 2 litres.
                  i reset the trip meter and went on with the regular usage.
                  when i reached a reading of 96kms on the trip meter , i emptied the tank ....i got 800ml from it.
                  so i did 96 kms in 1.2 litres which is 80kmpl

                  Comment

                  • #24
                    Originally posted by slipstream1 View Post
                    i have a pulsar 150 2003 model...the classic one.
                    i run 25 psi and 28 psi pressure in my tyres front and back respectively
                    i weight 60 kgs and never ride with a pillion
                    i upshift at 2.5k rpm and once in 5th i dont cross 2.6k rpm which equates to a speed of 40kmph. i am usually in 5th gear by the time i reach 30kmph.the throttle opening is a mere 2 -4degrees never more..
                    i make sure i dont lug the engine by not whacking open the throttle under high load and low rpm conditions.

                    the advantage of such slow riding is that no one is moving slower so automatically you dont brake much.

                    with this kind of riding in city conditions i consistently get 80kmpl and never below 75

                    the last time i checked this by the following method.
                    i emptied out the tank and put in exactly 2 litres.
                    i reset the trip meter and went on with the regular usage.
                    when i reached a reading of 96kms on the trip meter , i emptied the tank ....i got 800ml from it.
                    so i did 96 kms in 1.2 litres which is 80kmpl
                    80kmpl in classic p150 is awe-inspiring bro..
                    I managed 82kmpl in TVS VICTOR 125 few years ago with almost same driving habit..
                    http://www.facebook.com/ateesh.kumar

                    Comment

                    • #25
                      Even recently, I tested my mileage by full tank to full tank method.

                      I'm going to a new college which is again on an open village road with sparse traffic.

                      I'm maintaining 50-60 kmph, which is 4-5 krpm on my bike, and I went 285 kms in 5 Litres or so. This translates to something around 56 kmpl.

                      Unfortunately, my pocket money has been increased but it now includes petrol costs too, so I'm being very soft on the bike.

                      I was thinking of doing a test to determine what riding brings what mileage, but haven't got the free time for it yet.
                      ---
                      Brotherhood, Rules, Freedom. Xbhp.
                      Indian riding = Alertness, Anticipation and Adjustment.

                      Comment

                      • #26
                        Originally posted by Samarth 619 View Post
                        Even recently, I tested my mileage by full tank to full tank method.

                        I'm going to a new college which is again on an open village road with sparse traffic.

                        I'm maintaining 50-60 kmph, which is 4-5 krpm on my bike, and I went 285 kms in 5 Litres or so. This translates to something around 56 kmpl.

                        Unfortunately, my pocket money has been increased but it now includes petrol costs too, so I'm being very soft on the bike.

                        I was thinking of doing a test to determine what riding brings what mileage, but haven't got the free time for it yet.
                        waiting for your test bro..
                        http://www.facebook.com/ateesh.kumar

                        Comment

                        • #27
                          Originally posted by Honda_CBF View Post
                          waiting for your test bro..
                          See, I can't test exactly. But still, based on my recent trip to Sambhar lake, what you said is true it seems.

                          This time, I rode around the max torque spot (65-75 kmph) and couldn't get more than 40 kmpl... its even lesser than 40. It was 310 kms for 8 litres of petrol... which comes to around 38 something.

                          So, it seems I get a mileage of around 56 kmpl while riding around 55 kmph, handling the throttle softly. I'll write more about this here: http://www.xbhp.com/talkies/art-safe...-new-post.html

                          But that's sometime after... As of now, it seems 55 kmph is ideal for my P180 UG3...
                          ---
                          Brotherhood, Rules, Freedom. Xbhp.
                          Indian riding = Alertness, Anticipation and Adjustment.

                          Comment

                          • #28
                            Ok.
                            Whatever test i've done was for upto 150cc. So cant comment much about 180.
                            Btw, 56kmpl on p180 is awesome. What i mostly hear is 38-40kmpl.
                            http://www.facebook.com/ateesh.kumar

                            Comment

                            • #29
                              okay, i stick to to the rule of not exceeding 2600 rpm and i have done about 400 kms on my last refill of 5 litres and i still am getting 80 consistently. and it should increase further cuz the driving conditions will change, now that i dont need to go to this crowded area with bad roads that i used to go to. Anyways , riding for hours at 40 kmph is boring and tiring so i am considering installing a smaller sprocket so that i can do faster speeds at the same rpm of 2600. i can afford to do this since i dont need the torque/weight pulling power because i always ride alone and dont weigh much either.
                              even acceleration and top speed might increase

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                              • #30
                                @slipstream,
                                which bike?
                                http://www.facebook.com/ateesh.kumar

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