#31
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I haven't tested mine over a 2 or 3 hour period yet. I will try it this weekend and let you know how I fare with the mileage. With the N1EF needle, the bike was very good on gas.
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#32
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Quote:
It doesn't really bother me when riding technical trails since we're never more than 5 miles from the truck. From now on, on longer runs, I'll be using my oversize tank. In fact, back in '06, I ran a couple enduros with the oversize tank and didn't even fill up at the gas stop. |
#33
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Bill, have Ron at RBD cut the head. My '03 250 was a gas hog and this made a noticable improvement.
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#34
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I haven't really run a full tank dry yet ...I did a one gallon test run .. I figured I'd get about 40 to 45 miles out of a tank. Some local guys think I should be able to get 50 to 60. one of these days I'll find out for sure .. hopefull no pushing involved
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#35
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Quote:
I judge my bike's consumption on hours running not miles. Its still not accurate but at least it is a more comparable figure to use than miles covered. Up to now, I have been able to get about 3 hours use from a tank of gas before going on to reserve using the N1EF needle. I will test the CCK needle this weekend to see if it is better or worse with regard to consumption. Fergus |
#36
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A few observations on increasing fuel efficiency...
1) Float and Jetting – this is the first step. Make sure the float is set correctly. Dial your jetting in so the plug looks good, the engine runs smoothly across the range with good power and throttle response. The tail pipe should have little oily spooge when you are jetted well. The CCK needle is one of the best in my experience for performance and fuel mileage. 2) RB designs head mod. This will reduce the amount of unburned fuel and improve power (primarily low to mid) by improving combustion efficiency. 3) down hills – the PWK carbs will drain fuel out the overflow when you are descending hills steeper than about 30 degrees. I first noticed this when following my oldest son down hills. I set the motorcycle up suspended at a downhill angle and found when the fork tubes were near vertical the carb would drain lots of fuel out the overflow. This is with the float set to spec. This becomes noticeable on long (1/2 mile to 1 mile) steep descents. Minimize your time on the descents and/or shut off the fuel and down hill mountain bike the ride. 4) riding style – maintaining corner speed with a smooth flowing style notably improves efficiency. 5) [for Rekluse users] proper Rekluse set up with TC balls and a low RPM engage point to avoid a lot of low speed slip On technical trails (like these -http://www.fs.fed.us/gpnf/recreation/trailbikes/trails.shtml ) I get 30+ mpg riding alone. I ride to maximize cornering speed. I weigh about 270 lb geared up. I get about 22-25 mpg on the same trails giving my 6 year old son a ride. With him aboard most of the riding is 1st to 3rd gear with the majority of the time in 2nd gear. He weighs about 95 lb geared up. We corner slower and use more fuel accelerating out of corners. There is more clutch slip on uphills giving him a ride. There is also more fuel used due to the added mass. This fuel mileage includes multiple 3-4 mile long climbs from under 2000 ft elevation to nearly 6000 ft elevation.
__________________
Eric K '06 GasGas EC300 '01 GasGas XC300 |
#37
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Doesn't help running 10% ethanol pump premium either.
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#38
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Quote:
Did a 5 hour enduro yesterday on my EC300. 178 MJ, CCK needle, clip 2. Bike was just awesome - great linear power stright off the bottom. Conditions were gnarly, slippy and wet with lots of wheelspin and full power climbs. As an educated guess, my bike used approx 10% more fuel with the CCK needle than with the N1EF needle. We had fuel stops every hour and 40 mins so consumption was nota problem. I used approx 14 or 15 litres of fuel over this time frame under race conditons. Still pretty good in my opinion. Fergus |
#39
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Can the CCK work on any capacity. Was wondering if it would work well on my 200?
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#40
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Here are the popular choices that seemed to come up the most (and JD needles of course). CEK, CEL DCJ, DCK DDJ, DDK Not sure if that helps or not but something to think about. Skidad |
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