Quote:
Originally Posted by aerohead
At the time, we had the 55-MPH National Speed Limit. And engineers said that an 10% drag reduction would translate to a 5% improvement in MPG.
Some Universities continued to use this relationship into 2012.
My Volkswagen went from an average 23.795-MPG, to 26.136-MPG with the addition of all-season radials and a full belly pan.
Adding 18-inches of boat-tail and cardboard and duct tape rear skirts pushed mileage to 30.187-MPG, average.
Highest observed fuel economy was 35.6-MPG.
The HONDA CRX HF went from 52-MPG to 65-MPG and a high of 82-MPG.
The Toyota pickup went from 25.14-MPG @ 65-MPH, to as high as 39.9-MPG at the same speed, on Regular Unleaded.
|
Quote:
Originally Posted by aerohead
At the time, we had the 55-MPH National Speed Limit. And engineers said that an 10% drag reduction would translate to a 5% improvement in MPG.
Some Universities continued to use this relationship into 2012.
My Volkswagen went from an average 23.795-MPG, to 26.136-MPG with the addition of all-season radials and a full belly pan.
RAC note that on a Chevy Van a belly pan was nearly impossible to get to do anything.
Adding 18-inches of boat-tail and cardboard and duct tape rear skirts pushed mileage to 30.187-MPG, average.
RAC A gain of 6.392 MPG…
Highest observed fuel economy was 35.6-MPG.
The HONDA CRX HF went from 52-MPG to 65-MPG and a high of 82-MPG.
RAC a nice 13MPG Gain.
The Toyota pickup went from 25.14-MPG @ 65-MPH, to as high as 39.9-MPG at the same speed, on Regular Unleaded.
|
And the Toyota gained 14.76.
I am disregarding your highs as I am not throwing in readings of taking a Toyota and a Hyundai from 32MPG an getting readings of 60 and 70 MPG using Hydrogen systems as we could not do them twice…Yes a unicorn….but it happened on two cars (out of 14) and one drove home complaining to us about ONLY getting 62 MPG on two fillups…after we saw 72 on one drive test.
Rich