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Old 03-29-2010, 09:17 PM   #89 (permalink)
JacobAziza
Master EcoModder
 
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Join Date: Mar 2009
Location: Oakland, CA
Posts: 397

Big Orange Work Truck - '83 Ford F-250
90 day: 27.54 mpg (US)

Jessica's - '04 Toyota Matrix
90 day: 41.21 mpg (US)

Ninjette - '01 Kawasaki Ninja EX250R
Thanks: 44
Thanked 68 Times in 45 Posts
So, I think part of the problem for me before was I tried modified driving style before I started doing in actual mods.

So when I first tried P&G I had the open bed, no wheel skirts, no underbelly, no grill block.
I pretty much had the aerodynamics of a big old truck.

And I got a ratio of pulses to glides of 1:1 or worse. IE, it might take 7 seconds to accelerate from 50mph to 60mph, and then it would take all of 6 seconds to coast back down to 50.
So it seemed not that advantageous.

I finally tried it again post mod, and am getting closer to a 1:3 ratio - 5 seconds to accelerate from 45 to 55, and then 15 seconds to coast back down. So my engine spends more time off than on.
(It also doesn't hurt that I am more comfortable driving at low speeds now)
I did it for the last tank whenever I had much level highway driving to do, and it bumped my tank average up by around 2mpg compared to what I've been getting recently.

In conclusion, you all were right all along, but it seems to help a lot more the less wind resistance is a factor
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Quote:
Originally Posted by Piwoslaw View Post
A few months ago I returned home just as my neighbor pulled into his driveway. It was cold (around freezing) with some rain and sleet, and he yells to me: You rode your bike? In this weather?!?

So the other day we both returned home at the same time again, only now the weather is warm, sunny, with no wind. And I yell to him: You took the car? In this weather?!?
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