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Old 01-01-2021, 06:11 PM   #5 (permalink)
Aero Wannabe
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Join Date: Dec 2007
Location: NW Colo
Posts: 709

TDi - '04 VW Golf
90 day: 51.96 mpg (US)
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Originally Posted by bnmorgan View Post
have been thinking that a smarter cruise control might be better than trying to continue to improve the nut holding my steering wheel. PID maybe?
Small “thread hijack” for a shameless plug for my How to Ecodrive the TDI thread, specifically the Driving With Load (DWL) post. In hilly Colorado it doesn’t work well for me for optimum mpg. Besides why would anyone ever want to limit the power of the TDI? That is the fun of this vehicle, acceleration of a sports car but can be hypermiled like a 3 cylinder Geo Metro.

Hijack over. Apologies Julian.
60 mpg hwy highest, 50+mpg lifetime
TDi=fast frugal fun

Originally Posted by freebeard View Post
The power needed to push an object through a fluid increases as the cube of the velocity. Mechanical friction increases as the square, so increasing speed requires progressively more power.
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