jfoss@unicycling.com writes: >> On his Coker w/ 5" cranks my brother was recently able to log maintain >> 15mph over 21:30 (I tihnk the distance was 5.3mi). I am sure he could >> crack the 14mi mark for an hour if given the proper incentive (a good >dare >> might be enough). I wonder what he thinks. John? > >No way. I don’t think a fat, heavy Coker wheel could do an hour faster >than a thinner, lighter wheel from the Unicycle Factory did, or even >faster than a guy in 1886 did! > >So there. The glove is down. No, I’m not going to race you. > >John Foss, the Uni-Cyclone
Sorry to have confoosed you and probably a lot of others. I was referring
to my brother John in that last line! I was wondering whether he thinks he
could keep up a pace slightly higher than 14mph for a full hour.
My brother wrote me privately: "Dave,
“If I could get the ideal road/conditions arranged (a loop without huge
hills), I would be glad to challenge the standing records for distance
in an hour.”
And he means on his Coker. As for myself, I don’t think I could maintain
that speed for a whole hour, but pretty close.
Well, I am guessing off of the top of my head, where as I am to lazy to
actually go out and figure out how to change it, but I think it is at 287.
Chris Cline MUni-Cow
At 01:48 PM 07/02/2001 -0700, you wrote: >I say again, what is your cyclometer’s wheel setting? The wheel is NOT a >full 36" in diameter. Since Gilby has recorded 24.5mph, I belive 26mph is >certainly possible, but 256 rev/min is an amazing speed. I put on 140mm >cranks last week and have ridden them twice but already set a new speed >record: 18.7mph, and 20 is probably within my reach. But 26 is WOW! > >Whatever you do, don’t crash at those speeds! > >—Nathan > >“The Cline’s” <ncline@eup.k12.mi.us> wrote in message >news:3.0.2.32.20010629232204.007a0ea0@eup.k12.mi.us… >> First, I was testing to see how fast I could get going. Seccondly, I >> probably wasn’t going 26mph, for more than 8 seconds. Third, since I >> have been training to ride in Europe I was/am in good shape. >> Deceleration >isn’t >> too much of a problem, where as all you have to do is quit pedaling, >> well, I should say quit pushing the pedals, and kind of coast, with >> feet still >on >> the pedals, to a slower speed, and then eventually. >> >> Chris Cline MUni-Cow >> >> At 08:13 PM 06/29/2001 -0400, you wrote: >> >Here are some notes and stats associated with riding a Coker at 26mph: >> > >> >A cadence of 116 (116 revs/min) is about 12mph. To go 13mph, up that >> >another 10% for a cadence of about 128. Now, to hit 26mph, just double >> >that last cadence: 256 revolutions per minute! >> > >> >If that’s hard to relate to, 26mph is basically like pedaling a >> >Coker at >4 >> >revs per second. >> > >> >Perhaps the rider who posted this speed (I’ve since chucked the >> >e-mail) would say that this speed was just momentary, but in order to >> >hit 26, you would have to be able to keep up 20mph for awhile before >> >suddenly accelerating to 26. And then there is the deceleration >> >problem. >> > >> >Speaking of problems, falling (esp with no protection) at that speed >would >> >be nigh on fatal. The humans who can run that speed all have numbers >> >on their back and can be found passing batons to one another at the >Olympics. >> > >> >There is only one way I can envision someone hitting 26mph on a Coker, >and >> >that is off a small cliff. Not counting air resistance, one would hit >this >> >speed from a drop of about 38’ (a fall lasting one second). But that >would >> >be hard to maintain on account of the rider being dead. >> > >> >In other words, I don’t think anyone can hit 26mph on a Coker, period, >> >regardless of crank size, hills, tire pressure, etc. >> > >> >BTW, I went for a ride today and at the end pulled off another 4min >> >mile. I was chugging, but had there been a better track, I feel I >> >could have pulled off a 3:45 or even a 3:30. Zipping down a decent >> >hill, I’ve hit 19mph, and my brother has recorded 20mph. But there is >> >a BIG difference >bw >> >20 and 26mph (30% increase). >> > >> >David Stone >
>Well, I am guessing off of the top of my head, where as I am to lazy >to actually go out and figure out how to change it, but I think it >is at 287.
>At 01:48 PM 07/02/2001 -0700, you wrote: >>I say again, what is your cyclometer’s wheel setting? The wheel is NOT a >>full 36" in diameter.
Some basic math learns that 287 cm is equivalent to 35.9665". That is
indeed not a full 36" but the difference is hardly worth mentioning (in
this discussion about max speed). So, does 287 cm sound OK as a
calibration value for the Coker?
Klaas Bil
“To trigger/fool/saturate/overload Echelon, the following has been picked
automagically from a database:” “Dick Cheney, Ebola, Iraq”
David Stone wrote… >There is only one way I can envision someone hitting 26mph on a Coker, >and that is off a small cliff. Not counting air resistance, one would >hit this speed from a drop of about 38’ (a fall lasting one second). But >that would be hard to maintain on account of the rider being dead.
This made me laugh so hard I almost fell off my bed (in a hotel in China,
writing email on my notebook…)
Regards, Jack Halpern President, The CJK Dictionary Institute, Inc. http://www.cjk.org Phone: +81-48-473-3508
This has been asked many times. It depends on your weight and tire
inflation and how much tread you have. I am using 2776mm which was an
average of several runs carefully measuring the distance for 3 complete
revolutions (and throwing out the long and short measurements.
—Nathan
“Klaas Bil” <klaasbil_remove_the_spamkiller_@xs4all.nl> wrote in message news:3b423af1.2054358@newszilla.xs4all.nl… > On 3 Jul 2001 10:43:46 -0700, ncline@eup.k12.mi.us (The Cline’s) wrote: > > >Well, I am guessing off of the top of my head, where as I am to lazy to > >actually go out and figure out how to change it, but I think it is at
287. > > >At 01:48 PM 07/02/2001 -0700, you wrote: > >>I say again, what is your cyclometer’s wheel setting? The wheel is NOT > >>a full 36" in diameter. > > Some basic math learns that 287 cm is equivalent to 35.9665". That is > indeed not a full 36" but the difference is hardly worth mentioning (in > this discussion about max speed). So, does 287 cm sound OK as a > calibration value for the Coker? > > Klaas Bil
>Nope. It is from a standing start.
Then WOW! Seems amazing to me. And then what to think of Javier Ruiz who
shaved more than 2 seconds off that time?!
In breathless admiration, Klaas Bil
“To trigger/fool/saturate/overload Echelon, the following has been picked
automagically from a database:” “Dick Cheney, Ebola, Iraq”
klaasbil_remove_the_spamkiller_@xs4all.nl writes: > >Some basic math learns that 287 cm is equivalent to 35.9665". That is >indeed not a full 36" but the difference is hardly worth mentioning (in >this discussion about max speed). So, does 287 cm sound OK as a >calibration value for the Coker?
I believe that there is one problem inherent in calcluating like this –
that when we ride in real life, we wiggle and do other things affecting
the actual # of revs required to go a mile (or km).
What I did to set the # on my Coker was to put in an estimated amount and
then to ride a measured mile. Then I tweaked the #s until the computer’s
mile equaled the measured mile. [I am not sure what these #s refer to
anymore, but my Coker is set to 1795 somethings and my 26" is set to 1279.
Further calculations reveal that if these somethings are divided by 50,
you get about 36 and about 26. I am using Sigmas and the settings say WS.]
The idea of measuring the wheel and then calibrating is similar to
measuring a runner’s typical stride and then calculating her speed based
solely on the # of strides she makes over a given time. It is fairly
accurate but not as sensible as measuring the actual distance covered.
Jack Halpern wrote in message <200107040413.AA01151@mail.kanji.org>… >David Stone wrote… > >There is only one way I can envision someone hitting 26mph on a Coker,
and > >that is off a small cliff. Not counting air resistance, one would hit
this > >speed from a drop of about 38’ (a fall lasting one second). But that
would > >be hard to maintain on account of the rider being dead. > >This made me laugh so hard I almost fell off my bed (in a hotel in China,
writing >email on my notebook…) > > >Regards, Jack Halpern President, The CJK Dictionary Institute, Inc. >http://www.cjk.org Phone: +81-48-473-3508 >
Just a little bit of name dropping there eh Jack? or perhaps I’m mistaken
Dez Perado
Greetings >>Regards, Jack Halpern President, The CJK Dictionary Institute, Inc. >>http://www.cjk.org Phone: +81-48-473-3508 >> >Just a little bit of name dropping there eh Jack? or perhaps I’m >mistaken Dez Perado
I have no idea what you mean. Please explain. The above is my title at my
institute. I should use the signature below, but I often forget.
Stay on top, Jack Halpern Executive Director for International Development
International Unicycling Federation, Inc. Website: http://www.kanji.org
I’ve never ridden a Coker, but i hope to as soon as possible, especially having read this thread.
I was wondering, has any significant number of skilled Coker riders got together with the sole aim of acheiving a speed record, perhaps under the adjudication (Spelling?) of IUF officials (i don’t know the arrangement there, so i hope they exist), and perhaps Guiness World record people.
On a seperate note, is the 36" of a Coker wheel the optimum size for top speed on a uni? Would a slightly smaller wheel with shorter cranks help? Or a bigger wheel with the same or longer cranks?
ARGGHHHH, i’m desperate for a go on one now, 'cos i love going fast.
If you’re asking if I believe I’ve actually reached 20+ mph on a Coker,the
answer is yes. I am a heavy rider and going downhill is the only time I
get over about 17-18. Many of my highest readings were from lack of
control going downhill! I’ve also averaged 12.28 mph for 50 miles with a
max speed of only 16mph.
-Mark
> Chris Cline, Eddie Moffat, Mark Stephens: > > Have your continued > experiences born out your previous assertions? > > Christopher > > > > > – > rhysling > Posted via the Unicyclist Community - http://unicyclist.com/forums >