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JONNO
Div 1 Pro
Joined: 24 Jul 2006
Posts: 9031
Location: Up North
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 Posted: Thu Dec 03, 2009 3:26 pm Post subject: Maths question |
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A Cyclist weighs x amount in December. By March he has lost 10% weight through cutting out beer and all that cr@p. Now assuming he still has the same power output could he ride up a vertical hill 10% faster? And by the same logic a 45degree hill 5% faster? He would need quite sticky tyres obv.
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I was being chased by a police dog last week, and made the mistake of trying to escape through a little tunnel, over a see-saw and through a hoop of fire. It finally caught me as I was weaving in and out of some sticks. |
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alexc
Div 2 Pro
Joined: 24 Jul 2003
Posts: 5192
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| Posted: Thu Dec 03, 2009 3:36 pm Post subject: Re: Maths question |
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| JONNO wrote: |
| A Cyclist weighs x amount in December. By March he has lost 10% weight through cutting out beer and all that cr@p. Now assuming he still has the same power output could he ride up a vertical hill 10% faster? And by the same logic a 45degree hill 5% faster? He would need quite sticky tyres obv. |
has his bike become 10% lighter as well, and what about his wind resistance, has that halved as well, if not then no (I think)
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Steve McGinty
Div 2 Pro
Joined: 13 Dec 2003
Posts: 4902
Location: Norther than the Northerners
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| Posted: Thu Dec 03, 2009 3:42 pm Post subject: Re: Maths question |
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| JONNO wrote: |
| A Cyclist weighs x amount in December. By March he has lost 10% weight through cutting out beer and all that cr@p. Now assuming he still has the same power output could he ride up a vertical hill 10% faster? And by the same logic a 45degree hill 5% faster? He would need quite sticky tyres obv. |
So, by that logic on the flat he'll go 0% faster? And he gave up beer!!!
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Rob of the Og
E, Gold
Joined: 12 Jan 2005
Posts: 2256
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| Posted: Thu Dec 03, 2009 3:55 pm Post subject: Re: Maths question |
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| JONNO wrote: |
| A Cyclist weighs x amount in December. By March he has lost 10% weight through cutting out beer and all that cr@p. Now assuming he still has the same power output could he ride up a vertical hill 10% faster? And by the same logic a 45degree hill 5% faster? He would need quite sticky tyres obv. |
No |
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Ken Avit
E, Silver
Joined: 05 Sep 2005
Posts: 761
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| Posted: Thu Dec 03, 2009 3:56 pm Post subject: Re: Maths question |
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| JONNO wrote: |
| A Cyclist weighs x amount in December. By March he has lost 10% weight through cutting out beer and all that cr@p. |
that's ridiculous. how can he lose 10% of his weight if he goes from Dec - March without having a cr@p? |
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mattr
World Champ
Joined: 16 Apr 2004
Posts: 12647
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| Posted: Thu Dec 03, 2009 3:58 pm Post subject: Re: Maths question |
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| Ken Avit wrote: |
| JONNO wrote: |
| A Cyclist weighs x amount in December. By March he has lost 10% weight through cutting out beer and all that cr@p. |
how can he lose 10% of his weight if he goes from Dec - March without having a cr@p? |
colo/ileostomy, bit of a severe weight loss plan, but i'm sure it works well.  |
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Rob of the Og
E, Gold
Joined: 12 Jan 2005
Posts: 2256
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| Posted: Thu Dec 03, 2009 4:08 pm Post subject: Re: Maths question |
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| JONNO wrote: |
| A Cyclist weighs x amount in December. By March he has lost 10% weight through cutting out beer and all that cr@p. Now assuming he still has the same power output could he ride up a vertical hill 10% faster? And by the same logic a 45degree hill 5% faster? He would need quite sticky tyres obv. |
(the gradient of the hill doesn't really come into the *percentage* increase in speed directly; although obviously it affects *how fast* you go. In a perfect zero-rolling resistance, zero-air resistance scenario, then taking 10% off the weight will give a 10% increase in speed on *any* slope. In reality, the greater the slope, then the slower you go, so the more that air resistance tends to zero, so the closer you get to a linear relationship between power/weight and speed - but the same applies for someone who's putting out a lower power, that is that the slower you're going on a climb then the more influence that mass has in the total equation compared to air resistance. Rolling resistance comes into it as well, but it's by far the least important of the three opposing forces.) |
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JONNO
Div 1 Pro
Joined: 24 Jul 2006
Posts: 9031
Location: Up North
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| Posted: Fri Dec 04, 2009 7:29 pm Post subject: |
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Sounds like it ain't worth it then, I'll just keep riding round the fekkers and eating what I like.  
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I was being chased by a police dog last week, and made the mistake of trying to escape through a little tunnel, over a see-saw and through a hoop of fire. It finally caught me as I was weaving in and out of some sticks. |
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Dogma Dave
Div 1 Pro
Joined: 08 Feb 2007
Posts: 6714
Location: God's Own County
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| Posted: Fri Dec 04, 2009 7:55 pm Post subject: Re: Maths question |
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| Ken Avit wrote: |
| JONNO wrote: |
| A Cyclist weighs x amount in December. By March he has lost 10% weight through cutting out beer and all that cr@p. |
that's ridiculous. how can he lose 10% of his weight if he goes from Dec - March without having a cr@p? |
Quality  |
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nettie biker
Div 3 Pro
Joined: 29 Jun 2006
Posts: 3742
Location: Struggling to keep all the balls in the air.............
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| Posted: Fri Dec 04, 2009 9:29 pm Post subject: |
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how tall is he?
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Hans Datdodishes
T de F Winner
Joined: 28 Feb 2002
Posts: 28370
Location: On the Superior Forum with the cool kids
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| Posted: Fri Dec 04, 2009 10:03 pm Post subject: |
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50:50
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World Masters Drive HillClimb For Taureans Category C Champion 2013.
I'm a qualified coach. |
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billyam998
E, Gold
Joined: 29 Mar 2007
Posts: 3103
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| Posted: Fri Dec 04, 2009 10:39 pm Post subject: |
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| saddles too high |
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fatnick
Cat 1 Groupie
Joined: 10 Aug 2005
Posts: 195
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| Posted: Fri Dec 04, 2009 11:36 pm Post subject: Re: Maths question |
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| JONNO wrote: |
| By March he has lost 10% weight through cutting out beer and all that cr@p .... |
This is where I got stuck. Cutting out beer?!?!? WARN us before you say bad things like that, please. It gives me time to put my fingers in my ears 
Nick |
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dane
E, Silver
Joined: 20 Oct 2005
Posts: 505
Location: Out Front
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| Posted: Sat Dec 05, 2009 1:27 pm Post subject: . |
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er so cutting out crap and beer doesnt help?.............and even if it does bring on the beer an christmas cake i say! its once a year, sod it!
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