Steve Saunders Goldwing Forums - View Single Post - Gear ratio or 6 speed gearbox

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post #14 of (permalink) Old 09-20-2017, 10:53 AM
jobe05
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Join Date: Jul 2011
Location: North Carolina, USA
Model: 1500 & 1800
Posts: 6,132
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I have always been an advocate for a 6th gear, however the argument against it was a 6th gear would just dog the engine and make your MPG worse. I disagreed till I tried an experiment. I already know that at 3200 RPMs my MPG sucks (keeping it under 3000 is better on MPG), The above statement is based on highway driving, 5th gear, one up, towing nothing. Then I drove a couple of tanks at 3200 RPM's in 4th gear and walla, gas mileage was about 6 MPG better. I have a trike, maybe that makes a difference with the extra 400 lbs of weight, I don't know. But if your just looking at RPM's, why does 3200 RPM's get better fuel mileage in 4th gear than 5th? What would that be like in a 6th gear?

2012 Gl1800 Trike w/Hannigan Kit. 16000
2001 GL1800 ........ 73000 Miles
1989 GL1500 ...... 133000 miles and climbing

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