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Old 06-10-2011, 09:08 AM   #31 (permalink)
99metro
Master EcoModder
 
Join Date: May 2008
Location: Briggsdale, Colorado
Posts: 296

Wildfire - '96 Ford Bronco XL
90 day: 14.88 mpg (US)

Blackford - '96 Ford Bronco XLT
90 day: 20.26 mpg (US)

Y2k - '00 Honda Insight
Gen-1 Insights
Team Honda
90 day: 73.98 mpg (US)

Redford V10 - '01 Ford F250 Lariat
90 day: 15.64 mpg (US)

FireFly - '00 Honda Insight DX
90 day: 69.43 mpg (US)

LittleRed - '00 Honda Insight
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My "how to shift" opinion:

When shifting into the next gear, there should be NO CHANGE in RPM when letting the clutch out and accelerating. In other words, when the clutch is pressed in and the engine RPM drops, after you shift gears and let the clutch out, the RPMs should be matched and not change. The RPMs should not drop, nor increase when the clutch is all the way out. Shifting like this you can easily put 300,000+ miles on a clutch. If you have to replace your clutch before 100,000 miles, you are shifting wrong.

There should be NO throttle while the clutch is [disengaged] or even partially engaged- only apply throttle AFTER the clutch is completely out. The ONLY exception is on initial acceleration from a dead stop - let the clutch out just enough for the engine RPM to drop slightly, apply easy throttle, let the clutch out, THEN apply 70-80% throttle, but not so quickly to be spinning tires! You can do this when starting out on hills also without rolling backwards and slipping the clutch.

Yes, I will have to make a video on this. I have been meaning to do a hypermiling series.

Acceleration should be just before open loop on fuel injected engines, which is somewhere around 70-80% throttle. Here's the catch though: If you are driving stoplight to stoplight, then slow acceleration is best. If you are driving in rural areas, you should use that 70-80% throttle as long as you have more than 3 miles between stops.

There you go.

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Last edited by 99metro; 06-12-2011 at 12:31 PM.. Reason: changed "engaged" to [disengaged]
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