Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Under drive pulley

redpoint5 · 07-29-2013, 05:33 PM

The gain probably wouldn't be more than 1%, which is undetectable with my instrumentation. I'm running a 20% under-drive on the TSX and didn't notice anything.

There is the risk of not having enough alternator output to keep up with electrical demands with the under-driven system. Here is a chart showing the measured voltage of a TSX with a 20% under-driven pulley.

Original post

07-29-2013, 05:33 PM	#4 (permalink)
redpoint5 Human Environmentalist Join Date: Aug 2010 Location: Oregon Posts: 12,819 Acura TSX - '06 Acura TSX 90 day: 24.19 mpg (US) Lafawnda - CBR600 - '01 Honda CBR600 F4i 90 day: 47.32 mpg (US) Big Yeller - Dodge/Cummins - '98 Dodge Ram 2500 base 90 day: 21.82 mpg (US) Chevy ZR-2 - '03 Chevrolet S10 ZR2 90 day: 17.14 mpg (US) Model Y - '24 Tesla Y LR AWD Pacifica Hybrid - '21 Chrysler Pacifica Hybrid 90 day: 43.3 mpg (US) Thanks: 4,327 Thanked 4,480 Times in 3,445 Posts	The gain probably wouldn't be more than 1%, which is undetectable with my instrumentation. I'm running a 20% under-drive on the TSX and didn't notice anything. There is the risk of not having enough alternator output to keep up with electrical demands with the under-driven system. Here is a chart showing the measured voltage of a TSX with a 20% under-driven pulley. Original post __________________ Gas and Electric Vehicle Cost of Ownership Calculator Give me absolute safety, or give me death!