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Old 01-15-2017, 08:20 PM   #357 (permalink)
oldtamiyaphile
Master EcoModder
 
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Join Date: May 2009
Location: Australia
Posts: 1,510

UFI - '12 Fiat 500 Twinair
Team Turbocharged!
90 day: 40.3 mpg (US)

Jeep - '05 Jeep Wrangler Renegade
90 day: 18.09 mpg (US)

R32 - '89 Nissan Skyline

STiG - '16 Renault Trafic 140dCi Energy
90 day: 30.12 mpg (US)

Prius - '05 Toyota Prius
Team Toyota
90 day: 50.25 mpg (US)

Premodded - '49 Ford Freighter
90 day: 13.48 mpg (US)

F-117 - '10 Proton Arena GLSi
Pickups
Mitsubishi
90 day: 37.82 mpg (US)

Ralica - '85 Toyota Celica ST
90 day: 25.23 mpg (US)

Sx4 - '07 Suzuki Sx4
90 day: 32.21 mpg (US)

F-117 (2) - '03 Citroen Xsara VTS
90 day: 30.06 mpg (US)
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Quote:
Originally Posted by bandit86 View Post
It is on eliminating alternator tha you Eco guys start to loose me. Battery voltage is 12.5 or less. Running voltage is 14-14.5. Electronics work better on higher voltage. If you're that concerned about alternators, get a tiny little 30 amp alternator and put it on a large pulley. Spin it at half the speed. Or Install an under drive pulley, that will reduce your water pump losses too.

When PB batteries approach full charge, they become very inefficient. At their worst, the charge/discharge efficiency can fall to 50%. Newer cars may run lower voltages because of this. My Fiat runs at 12.8v, the Renault holds closer to 14v more of the time, but often you'll see it sitting at around 12.8 as well.
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