Quote:
Originally Posted by low&slow
Hi Guys, Fred Hayes did 128mpg on his diesel MC. It was definitely the day for the diesels.
I didn't stay for the 4 grocery bag test which actuallly my bike would have been able to hold ( large tankbag, saddlebags and large tailsection). Apparently Fred had some type of hanging bags that did hold the 4 grocery bags. His fuel tank was tiny , probably no more than 2 gallons capacity.
I may have gotten better mileage if the course really was 133 miles as I went the full distance but my odometer only indicated 126.2 with a few miles in addition to the course. I need to check the accuracy of my odometer.
For next year, I need to close up the gap between me and the tailsection, fair in my front wheel and install a longer, taller windscreen. Alan Smith lives fairly close by so I may pick his brain on how he did fender, windscreen and tailsection. My seat is pretty tall and I can lower myself a couple of inches with a thinner pad.
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The tail section should be between 14" - 16" wide at the front [the same width as your hips] and taper at a rate of 1 in 6 [9.5 degrees] and I recoment that you make it 30" or 36" long. The rear end should be 4" wide. the height at the front should be around sholder height. aprox 24" - 30" tall. I will post some pictures of mine so you can have a better idea. In your picture the big tank bag should be the same height thoughout it's length or slope upward to the rear. The way you have yours is backward, with respect to aerodynamics. What you are trying to do in this tank area is fill it up as much as posible so that the depresion behind the windshield is as small as posible. The Idea is to only push the air out of the way once, so once it is out of the way keep it that way until the rear taper. The top should also taper at 1 in 6 from the horizontal, but if you have the same issue as my gs500 you will have to adjust this so the slop is 1/6 form the horazontal because the tail peace may sit at an angle on the bike... the shape and exit angle of the windsheild is critical make it round and exit angle as close to the air streem as posible.