BF math - Help
#1
Thread Starter
Senior Member
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From: NoVA
Bikes: Specialized Allez Sport
BF math - Help
Occasionally some memebers posted that they ride xx number of miles at an average speed 18-20 miles per hour. Reading that my mind went completely blank, the whole thing went straight over my head. So I dig back to whatever knowledge I learned from my basic education and still nothing came up. I even checked with my cyclocomputer and still it doesn't know either. All it can come up with is a singple number for an average. So can the experts on here help to educate me? In layman term please. If the math is too advance then perhaps all is lost. Thanks.
#2
Come on you Spurs!
Joined: Oct 2010
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From: Toronto, Ontario
Bikes: Trek 2.1, BMC Roadracer SL01
What is the question? How can average speed be between 18 and 20 mph? It can't, average speed = distance traveled / time so it's a unique number. Not sure that's what you're asking though.
#6
p.s. 
but if you want the BF math to that equation, you multiply the final number by stem length and add a zero to the end, divide that by seat cost then subrtract the difference in weight of the Di2 from the difference of Sram red (yellow edition of course[color changes weight IRL])=BFavgspeed
edit: add 1mph avg for: new bar tape, carbon fiber anything, each grouppo up you advance, whoosh wheels, and post count

but if you want the BF math to that equation, you multiply the final number by stem length and add a zero to the end, divide that by seat cost then subrtract the difference in weight of the Di2 from the difference of Sram red (yellow edition of course[color changes weight IRL])=BFavgspeed
edit: add 1mph avg for: new bar tape, carbon fiber anything, each grouppo up you advance, whoosh wheels, and post count
#7
Senior Member
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From: Virginia/DC
Bikes: quite a few
Ohhhhh the 41.
I think what people are saying is that one ride they'll average 18.5, then another day 19.5, another 18.1, another 19.9, for example. Then they are using their brain (not a cyclocomputer) to approximate that range as 18-20 mph.
Occasionally some memebers posted that they ride xx number of miles at an average speed 18-20 miles per hour. Reading that my mind went completely blank, the whole thing went straight over my head. So I dig back to whatever knowledge I learned from my basic education and still nothing came up. I even checked with my cyclocomputer and still it doesn't know either. All it can come up with is a singple number for an average. So can the experts on here help to educate me? In layman term please. If the math is too advance then perhaps all is lost. Thanks.
#8
Senior Member

Joined: Jun 2011
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From: Queens, NY
Bikes: 2011 Scott S30, 2012 Tarmac SL3
I got the basic cyclocomputer and I simply take note of my start time and divide the distance I've ridden an hour (or two) elapsed and consider that my avg speed. As of late, my rides are becoming longer where my rides are of a minimum of 3 hours. But, my speed suffers immensely after 1.5 hours. It's all relative though. Do not let the #s fool you. For all you know, some individuals ride on pancake flat while you're on rolling hills.
#9
well hello there

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Occasionally some memebers posted that they ride xx number of miles at an average speed 18-20 miles per hour. Reading that my mind went completely blank, the whole thing went straight over my head. So I dig back to whatever knowledge I learned from my basic education and still nothing came up. I even checked with my cyclocomputer and still it doesn't know either. All it can come up with is a singple number for an average. So can the experts on here help to educate me? In layman term please. If the math is too advance then perhaps all is lost. Thanks.
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Two wheels good. Four wheels bad.
#18
#20
Behind EVERYone!!!

Joined: Jan 2005
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From: Burlington ON, Canada
Bikes: 2010 Specialized Tricross Comp 105 Double
It means that none of us are as fast as we think we are
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A good teacher protects his pupils from his own influence.
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A good teacher protects his pupils from his own influence.
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Last edited by baj32161; 08-16-11 at 06:09 PM.
#23
I got 99 problems....
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#25
Zoom zoom zoom zoom bonk

Joined: Sep 2006
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From: New Zealand
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Actually the average BF speed is 20-18mph.
Ride 1 mile to the bike shop. Spend 50 minutes harassing the staff. Ride 1 mile home.
2mph.
Ride 1 mile to the bike shop. Spend 50 minutes harassing the staff. Ride 1 mile home.
2mph.




worked then....works now


