coasting contest?!

conjob's picture

i want to have a contest for those of us who rock a freewheel (even if it's just occasionally).

i propose a coasting contest. it'll be like a skid contest, but with no skidding. only coasting. i'm not sure how it will work exactly at this point, so i want some input.

i can tell you that it'll happen on marlbrook (in lake claire).

what i'm thinking is this: folks compete two at a time, and we do a single elimination sort of thing. people sprint over the crest of the hill, then after a certain point, no more pedaling is allowed. the rest of the race involves who can coast the fastest to the finish line at the bottom of the hill.

thoughts?

ckdake's picture

Fixies could go to if they

Fixies could go to if they clip out and let their bike do the rest of the work.

conjob's picture

true

that might put the fixies at a disadvantage, though, having to clip out and everything.

but you're right. nobody's not un-disinvited.

v1ct0r's picture

all things equal

a finally-tuned fixed would win against a free wheel. the fixed gets some mechanical advantage from the angular momentum of the wheel, i think.

someone correct me on this. around the time i was learning stuff like this was when i flipped the bird to mechanical engineering.

durkie's picture

i think fixed is screwed

forgetting about bearings...

freewheelers have the friction and spring force of two, maybe four pawls in their freewheel slowing them down.

fixies have:

the friction of the chain against ~30 teeth (say the chain engages half the teeth of chainring and cog and you're running a 46x16 = 23 + 8 teeth engaged)

the friction of every single link in the chain, which has a bazillion moving parts.

plus they have the friction of the bottom bracket bearings.

and if you want to get stupid about it, the spinning pedals are more drag.

v1ct0r's picture

i couldn't possibly get any

i couldn't possibly get any stupider about it.

Stone mountian would be a

Stone mountian would be a good place. Start at the top of a hill, no pedaling at all. Just clip in, and see who gets the furthest with no input of energy. So it then becomes a factor of weight and aerodynamics.
Rolldown tests are an easy way to test any "aero" changes that you make. ie, bars/deeper sectioned wheels etc.
If this event happens let me know.... I'll bring out my secret weapon bike...
No un-disinvited people... so penis wielding people can play too?!

durkie's picture

probably depends

on the extent to which you will be "wielding" it at the race...

Alex's picture

Seth would win hands down

just gather up that there kinetic energy, and keep going

Jeff's picture

Don't place your bets yet

there are others with a strong attraction to gravity.

Teh Black Hole's picture

You're going down Chimpy.

You're going down Chimpy.

Dfunk's picture

Don't forget

that rolling resistance will be important as well. I wanna see a dura ace/campy record/phil wood battle. The ultimate comparison. Yes!

Tex's picture

Don't forget

Your Tires are Over-Inflated!!!

The final showdown!!!

IndyFan's picture

Big difference between

Big difference between fastest and furthest. Categories?

Teh Black Hole's picture

What about speed when you

What about speed when you crest the hill? That would add to the available energy. I say start from dead stop at the top of a hill.

:(

you really don't want all 60 kg of me to win, do you? At least give me a chance...haha

Jeff's picture

60 kg Ha!

I got chunks bigger than that in my stool.

conjob's picture

you're full of surprises

you know, jeff, somehow i always have it in my mind that you're older, wiser, and more mature than the rest of us. i guess all that really means, though, is that you use words like "stool" instead of "poop".

Jeff's picture

Sometimes just older

Paraphrasing a skit on Saturday Night Live, Phil Hartman does an impression of Frank Sinatra, with Billy Idol (played by Sting):

Billy Idol: I think you're a bloody, stupid old fart!

Frank Sinatra: You're all talk, blondie! You want a piece of me? I'm right here!

Billy Idol: Don't provoke me, old man.

Frank Sinatra: You don't scare me. I've got chunks of guys like you in my stool!

Billy Idol: Alright, I'll rip your bloody head off.

http://snltranscripts.jt.org/90/90ksinatra.phtml

conjob's picture

this is why i'm saying we sprint first

if everybody started from a dead stop, then giants like you would win! if there's an element of sprinting involved too, then it's based on more than just weight and aerodynamics.

we could do several categories...

v1ct0r's picture

hah

to make this fair at all, i say start from the bottom of the hill and CLIMB, then coast down the other side.

the lighter riders with have an easier time up and probably have a greater initial velocity at the top, but they'll have less mass coming down the other side.

conjob's picture

yes

i like this idea.

.

me too.

IndyFan's picture

Stone Mountain Park...

The climb going up towards the conference center from the playground then past the dam on the lake would be challenging and a pretty good profile for this event. There is a flat run-out as the road crosses the dam followed by another hill. (Outside loop going backwards, also the TdG route this summer.)

ooooh I'm a fatty, I bet I

ooooh I'm a fatty, I bet I could stomp some of the ladies around here... if I could make it over the hill. *wheeze*

v1ct0r's picture

Resistance is futile.

Resistance is futile.

Alex's picture

Tell that to a headwind.

Tell that to a headwind.

v1ct0r's picture

i'd rather talk to teh

i'd rather talk to teh highwind.

conjob's picture

the thing about stone mtn

i am not opposed to doing this at stone mountain, but i was also thinking it would be better to do this somewhere intown, so as to get as many people involved as possible.

thoughts?

.

E. Morningside!

conjob's picture

hm

i thought about this. it's good and long. the thing is, there's traffic. the nice thing about doing it on a street in lake claire is (a) it's a steep little hill, and (b) there's just one stop sign at the bottom. so if we put somebody down at the stop sign to keep folks from interfering when the racers come down the hill, we can avoid having to deal with cars altogether.

IndyFan's picture

How much does the pucker

How much does the pucker factor affect terminal velocity?

What about the hill down

What about the hill down Clifton going towards Briarcliff?

conjob's picture

that's a darn good hill

but again, the issue is traffic. then again, traffic might make things more interesting...

austinisnorobot's picture

a much more fair coasting contest idea.

fuck a hill. flat ground. sprint to a line, and then no more pedaling after that line. see how far you can go without pedaling before you stop. then, its more about you and your control of yr bike and less about your fat ass and gravitys love for it.

Jeff's picture

Reminds me of the old Compulsory figures in skating...

v1ct0r's picture

an even more fairer coasting contest idea

don't compete at all! winner is decided by distance covered in roflcopter.

or

or who survives the impending lolacaust

weight handicaps, the only

weight handicaps, the only way. combined bike/rider weight handicaps. or several weight classes, otherwise the big dudes will always win.