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[QUOTE=beatr911;291601]Great numbers!
A couple of questions to get some perspective though:
1) What would you say are your average speeds for the 90mpg tank?
2) What is the engine speed at say 70 mph?
3) What is the hp produced at say 70 mph?
4) How did you verify the accuracy of your odometer?
Hi Garth,
1) The 90 mpg tankfill was mixed riding with an even mix of freeway, city road and backroad. Average speed was probably around 45-50 mph. Freeway cruising speed was about 65 mph.
2) Engine speed is about 4500 rpm @ 70 mph in 6th gear with the 15/33 gearing. I'll have to check and confirm this.
3) According to the only dyno chart I have for the EX250 the HP would be about 8.5 Hp @4500 rpm.
4) I did a Mapquest round trip to my destination ( my house to the Livermore Junction): 75.46 miles. I noted the mileage on my odometer and tripmeter at the start, midpoint and the return trip ( 69.1 miles). 75.46- 69.1 = 6.3 miles undereported. 75.46/69.1 = 1.092 correction or 9.2 % under reporting.
Thanks for the advice on the iridium plugs and increasing the gap. I rode some yesterday is very windy conditions and found it hard to stay in 6th gear when going into the wind. I ended up cruising in the 5th and 4 th gear much of the time. The taller gearing has magnified poor part throttle response; I need to clean, check and adjust my carbs to hopefully correct this.
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