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Old 02-05-2007, 11:18 PM
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bwilson4web bwilson4web is offline
Engineering first
 
Real Name: Bob
Location: Huntsville, AL
Hybrids: Prius Classic 03
Posts: 5,056
Default Re: Cruise Control sweet spot at 47 mph?

Quote:
Originally Posted by Dan View Post
Uhh... Yikes... May be over my head here.
Not really, you're showing exactly the type of experimental attitude needed to move from FUD and superstition to knowledge and enlightenment. This is the way to go and you are in good company.

Quote:
Originally Posted by Dan View Post
May be an anomaly of the break-in, but I'll see what I can do. I noticed it a few weeks ago that my MPG was kinda low at 42 MPH. I figured that it should be high at 42 MPH since it would ensure I ran off the ICE and the wind resistance would be lower. I tried it at 50 and got about the same results. Over the next few weeks I tried 43, 44, 45, 46, 47, 48, 49. Seemed 47 was the best.

I'm afraid it wasn't very scientific. There is a 2 mile stretch, fairly level, with little wind. I simply watched the FCD and looked at what it bounced between.
Actually this is pretty good. Use the resources readily at hand and build upon them. My 'benchmark' stretch is 2.5 miles long. Heck, my initial, high-speed benchmarks were on I-20 between Fort Worth Texas and Birmingham Alabama.

Quote:
Originally Posted by Dan View Post
I obviously need to find a good stretch without lights or stop signs. My main problem is that I don't have a Scangauge and I don't want to reset my tank average. I figure I'd need at least a 10 mile stretch to reduce error.
The instrumentation is nice to have but your multi-function display is perfectly adequate.

In my case, mileage is calculated using gas receipts and trip meter miles. I use the MFD for benchmarks and experiments. But whatever works, as long as there is some reasonable metric involved, is perfect.

Bob Wilson

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