Thread: Cd 0.38
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Old 11-01-2015, 11:41 PM   #13 (permalink)
COcyclist
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Join Date: Dec 2007
Location: NW Colo
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TDi - '04 VW Golf
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Quote:
Originally Posted by skyking View Post
My TDI's fuel specifics are so much better than a gasser, and I will be adding a 6th gear eventually. I don't imagine that being an issue, ever, at any speed.
I believe our diesels are less sensitive to throttle position changes due to the diesel engine's lack of a throttle plate. Improved aero should only help efficiency since they simply add less fuel with reduced load and can run very lean compared to a gasser. That said, if you can do the 6 speed swap and keep the engine at about 1,800 rpm at your chosen highway speed that is the sweet spot for BSFC for the TDI. It's on my wish list.
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Quote:
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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