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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 11-06-09, 04:41 AM   #1
dbgray21
my quads hurt...
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useless post of the day...

this morning on my way home from work, i noticed one of those portable police speedometers halfway up one of the hills i normally walk up. my legs were still fresh so i said why not... i managed to hit 24mph with a 42-16 ratio and 170mm cranks before i ran out of gear. the hill is about a 20 degree grade. i have no idea if this is good or bad, but i know i will be stepping up to a 46t when i get the money...
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Old 11-06-09, 04:46 AM   #2
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why do you walk up the hills? it'sabikeyourideit
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Old 11-06-09, 04:49 AM   #3
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get a rear cog, not a chainring. cogs are cheaper and have more effect on gear inch than chain rings.

1 tooth on a cog is about 3-4t on the chainring effect! They are also cheaper and have less effect on the chain. Add a new chainring and you probably need a new chain, unless you have spare links.

Also, post in the new spinning thread for listing your high speed tales.
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Old 11-06-09, 05:10 AM   #4
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24 MPH on a 20 degree road grade on a bike? Um, no. Hell no actually. Downhill that would be an impossible speed to maintain over any distance. The bike would get away from you and demand more. Keeping it at only 24 mph (say as opposed to keeping it a 5 mph) would be a herculean task. You ain't Hercules. Uphill? Yea, then you wake up. I think your sense of grade is off. Way, way off.
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Old 11-06-09, 05:12 AM   #5
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why do you walk up the hills? it'sabikeyourideit
i usually walk for a little bit and smoke a cigarette before i stop at starbucks on the way home. it's peaceful on my street at 5 in the morning. only for about an hour though. i like to enjoy it while it lasts...
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Old 11-06-09, 05:14 AM   #6
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my quads hurt...
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24 MPH on a 20 degree road grade on a bike? Um, no. Hell no actually. Downhill that would be an impossible speed to maintain over any distance. The bike would get away from you and demand more. Keeping it at only 24 mph (say as opposed to keeping it a 5 mph) would be a herculean task. You ain't Hercules. Uphill? Yea, then you wake up. I think your sense of grade is off. Way, way off.
i thought the grade might be wrong... it was a rough guestimation...
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Old 11-06-09, 05:15 AM   #7
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walking is way underrated in this forum...
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Old 11-06-09, 05:15 AM   #8
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Oh, I mean unassisted. For example, on the downhill a brake could be the equalizer. On the uphill - remain in the dream as long as you can.
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Old 11-06-09, 05:19 AM   #9
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dbgray21,

Yea, I know. Just giving you a hard way to go. Try bettering your speed on that hill each week. Hit that hill for all you are worth whenever you need to use it in your daily life but only "test" yourself on Friday's or whatever. You'll be surprised at the results.
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Old 11-06-09, 06:49 AM   #10
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so 42-16 uphill? You'd have to hit ~120 rpm with your legs to do that... and if you are even close to your estimate of a 20 degree hill (what does that equate to a ~%30 grade?) and the distance was of any consequence, I find it hard to believe you hit 24.

And why would there be a mobile speed trap on the uphill?
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Old 11-06-09, 07:04 AM   #11
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does anyone have a good recipe for chicken noodle soup?
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Old 11-06-09, 07:05 AM   #12
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If my math is correct, a 20 degree hill equates to a 36% grade... that is a hella steep hill.
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Old 11-06-09, 07:14 AM   #13
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this morning on my way home from work...
BF gold!
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Old 11-06-09, 07:15 AM   #14
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Originally Posted by oldfixguy View Post
24 MPH on a 20 degree road grade on a bike? Um, no. Hell no actually. Downhill that would be an impossible speed to maintain over any distance. The bike would get away from you and demand more. Keeping it at only 24 mph (say as opposed to keeping it a 5 mph) would be a herculean task. You ain't Hercules. Uphill? Yea, then you wake up. I think your sense of grade is off. Way, way off.

He said he was halfway up the hill when he decided to ride back down and get a speed reading. If the hill is short enough, and with a 20deg%. grade it better be, 20mph is not unreasonable.

It would have to be a very short ride at that grade, though. I've gone over 30mph on my bike on a hill that's only a block long and I don't think it's over 10%. (42-15 gearing. I spin out at >140, according the the cadence meter on my roadie)
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Old 11-06-09, 08:04 AM   #15
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BF gold!
i work the midnight shift, i get off at 5 in the morning...

and to bbattle, it was a quick sprint from light to light...
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Old 11-06-09, 08:38 AM   #16
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Neato
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Old 11-06-09, 08:52 AM   #17
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get a rear cog, not a chainring. cogs are cheaper and have more effect on gear inch than chain rings.

1 tooth on a cog is about 3-4t on the chainring effect! They are also cheaper and have less effect on the chain. Add a new chainring and you probably need a new chain, unless you have spare links.

Also, post in the new spinning thread for listing your high speed tales.
I think 1 tooth on your cog equals out to two teeth on the chainring.
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Old 11-06-09, 09:14 AM   #18
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does anyone have a good recipe for chicken noodle soup?
Ingredients

2 1/2 cups wide egg noodles
1 teaspoon vegetable oil
12 cups chicken broth
1 1/2 tablespoons salt
1 teaspoon poultry seasoning
1 cup chopped celery
1 cup chopped onion
1/3 cup cornstarch
1/4 cup water
3 cups diced, cooked chicken meat
Directions

Bring a large pot of lightly salted water to a boil. Add egg noodles and oil, and boil for 8 minutes, or until tender. Drain, and rinse under cool running water.
In a large saucepan or Dutch oven, combine broth, salt, and poultry seasoning. Bring to a boil. Stir in celery and onion. Reduce heat, cover, and simmer 15 minutes.
In a small bowl, mix cornstarch and water together until cornstarch is completely dissolved. Gradually add to soup, stirring constantly. Stir in noodles and chicken, and heat through.
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Old 11-06-09, 09:20 AM   #19
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I think 1 tooth on your cog equals out to two teeth on the chainring.
youre right if youre talking about a polo bike.
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Old 11-06-09, 09:41 AM   #20
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thanks
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