# Fifty Plus (50+) - Here's how bicycling works: an all-purpose primer

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BengeBoy
06-19-10, 12:19 PM
You figure out how much weight you want to save off your current rig.

You go to the ATM, you withdraw that same amount of weight in \$20 bills (i.e., saving 100 grams of weight off your bike requires you to withdraw 100 grams of currency).

You then hand that stack of money to your local bike shop.

Your bike then gets lighter.

Any questions?

(btw, I did not invent this formula, I just finally figured out that it is true. slow learner)

Bionicycle
06-19-10, 12:30 PM
Does that work on Utility/City bikes as well? Because I could pack an extra 100 grams of stuff in my panniers then, but sadly I wouldn't have the cash to buy that extra 100 grams of stuff. Dang why does bicycling have to be soooooo complicated.:twitchy:

cyclinfool
06-19-10, 12:38 PM
I really don't think a linear formula matches with my experiences. From the regression analysis I have done the correct formula is:
\$\$ = PI^(weight loss desired in grams/5) - no 50+ formula would be correct without getting PI in there somewhere.

stapfam
06-19-10, 12:38 PM
That works down to a certain level. On the MTB's it was about 21lbs on a rigid hardtail. Below that you multiply the \$'s x 10 to get the same weight saving.

What it is on a road bike I would not like to even think about.

Bionicycle
06-19-10, 12:49 PM
I really don't think a linear formula matches with my experiences. From the regression analysis I have done the correct formula is:
\$\$ = PI^(weight loss desired in grams/5) - no 50+ formula would be correct without getting PI in there somewhere.

Well ya... you gotta get pie, I mean PI in there somewhere... I'm new here and I've even figured that much out even being special and all...:o Or, at leas that's what they always called me in school. They would say "you're special Ed" . This always confounded me, because my name is not Ed. :notamused:

Retro Grouch
06-19-10, 05:09 PM
That works down to a certain level. On the MTB's it was about 21lbs on a rigid hardtail. Below that you multiply the \$'s x 10 to get the same weight saving.

What it is on a road bike I would not like to even think about.

I think that you're right. On a road bike it's pretty simple to go from 30 lbs to 25 lbs. Going from 25 lbs to 20 is a little harder but still do-able if you're willing to spend the money. If you want to go from 20 lbs to 15 lbs you might be talking about enough money to make a Washington bureaucrat wince.

Pat
06-20-10, 08:49 AM
I think that you're right. On a road bike it's pretty simple to go from 30 lbs to 25 lbs. Going from 25 lbs to 20 is a little harder but still do-able if you're willing to spend the money. If you want to go from 20 lbs to 15 lbs you might be talking about enough money to make a Washington bureaucrat wince.

Hmmm, I thought huge sums of money just made them salivate. Could be wrong. I know very few Washington bureaucrats.

RonH
06-20-10, 08:54 AM
What did you get for that stack of \$20s? Got pics?

BengeBoy
06-20-10, 11:40 AM
What did you get for that stack of \$20s? Got pics?

Nothing pic-worthy. Just shopping & calculating the potential damage.

ciocc_cat
06-20-10, 05:14 PM
Nah. You figure out how much weight you want to save, then loose it off your gut/ass. Much cheaper (and healthier) than spending a butt-load to lighten your bike.

gcottay
06-21-10, 10:06 AM
Any questions?

Doesn't the complete formula include an exponential function units dollars as weight limit zero is approached?

Doohickie
06-21-10, 12:33 PM
I don't care that much how my bike weighs.

Do I win?

Bionicycle
06-21-10, 01:02 PM
Doesn't the complete formula include an exponential function units dollars as weight limit zero is approached?

Much like the speed of light, zero bicycle weight can never be reached, because the weight of the money necessary increases exponentially to infinity as you get closer to zero bike weight. I think that was in a lesser known paper Einstein wrote about time this picture was taken.

http://0.tqn.com/d/physics/1/0/R/0/-/-/AlbertEinsteinbike.jpg

cyclinfool
06-21-10, 01:16 PM
Much like the speed of light, zero bicycle weight can never be reached, because the weight of the money necessary increases exponentially to infinity as you get closer to zero bike weight.

Einstein was not a believer in quantum theory which for the most part has replaced most of general relativity. I suspect that near zero bike mass is much like the illusive graviton - as much energy and effort as we seem to pour into finding it, it continues to evade us.

ciocc_cat
06-21-10, 11:40 PM
You could construct a bicycle out of exotic "negative matter" (not to be confused with anti-matter), which would (hypothetically) result in a self-accelerating bike that would most likely be promptly banned by the UCI.