Coker calibrations

Hey all!

I just recently got my new Coker, and I’m loving it! However, I’m working on
hooking my new Coker up with a speedometer. I’ve got all the necessary
techonlogy, but I don’t know what wheel size to set the computer on. I have
inch measurements, and I have centimeter measurements. What have you other
Coker riders set yours to?

~Amelia~


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Re: Coker calibrations

>As Kevin said, make the measurement. For my weight at my tire inflation, my
>measurement gave 2776mm.

That’s interesting, I opted for 289cm, and I’ve heard the figure 290cm
mentioned, that’s a whole 10-12cm (100-120mm) different !

SIMON

----------------------------±--------------------------
|
Simon Greenway | I.O.U O
I.O.U@mindless.com | | Romsey, Hampshire, UK. | Idiots On Unicycles #/
| http://come.to/muni o
----------------------------±-------------------------- get on that on wheeled
bike of yours and join the IOU !
----------------------------±--------------------------

RE: Coker calibrations

You can set your cycle computer to what ever you want. Some people are concerned
with accuracy. Some people are less concerned. And some like to fool themselves
into thinking they went farther (and faster) than they actually did.

My experience is that the actual distance is 3-5% less than the stated size of
the tire. On my 24" (1915mm calculated value) I have two settings: racing tire
– 1905 (99%) muni tire – 1852 (97%) And still it can make a difference of
several cm depending on the pressure in the tire.

Now if I really want to feel good, I set the thing to 2900mm and I do speeds and
distances like a coker!

Dirk

-----Original Message----- From: Smash Hits Magazine [mailto:i.o.u@mindless.com]
Sent: Thursday, May 25, 2000 4:20 AM To: unicycling@winternet.com Subject: Re:
Coker calibrations

>As Kevin said, make the measurement. For my weight at my tire inflation, my
>measurement gave 2776mm.

That’s interesting, I opted for 289cm, and I’ve heard the figure 290cm
mentioned, that’s a whole 10-12cm (100-120mm) different !

SIMON

----------------------------±--------------------------
|
Simon Greenway | I.O.U O
I.O.U@mindless.com | | Romsey, Hampshire, UK. | Idiots On Unicycles #/
| http://come.to/muni o
----------------------------±-------------------------- get on that on wheeled
bike of yours and join the IOU !
----------------------------±--------------------------

RE: Coker calibrations

> Jack Halpern <jack@mail.hinocatv.ne.jp> wrote:
> : For a second I almost thought this may be serious!? Don’t
> laugh – there
> : is a reason. Nearly 20 years ago Floyd Crandall allegedly hit a momentary
> : speed of 51 kph on a 54" big wheel – I am not sure of the exact facts, but
> : I think John Foss knows the details.

> Ah, but I know how I managed that reading, and so does Michel, and michel now
> knows how my speedo works. I also know I was not in the saddle at the time,
> nor was michel. We were just playing about.

But Jack Halpern was telling of a time before computerized cyclometers were
available. So how was this speed recorded?

A little background for those that don’t know Floyd:

Floyd Crandall’s father Bernard was one of the founding members of the USA Inc.
He hosted the first USA “Nationals” (which we count as the second or third
convention, from events that were held before there was a USA Inc.). Floyd and
his brother Clyde, among other riders from the Pontiac Unicyclists, were some of
the top riders of their era. Floyd was basically the top male unicyclist of the
70’s. He used to win most of the races (and artistic events), and in 1980 was
flown to Japan to set a 100 meter record for a Guinness TV special. He did this,
and established the first 100 meter unicycle record for the Guinness Book.

This stood until 1987 when I broke it, again in Japan. Floyd was always an
inspiration and role model to me as a competitor. It was important to me to
learn from his example and be a good role model as well. Hopefully I have
done that.

Meanwhile, Floyd did other amazing things in his day. His father built some big
wheels, and Floyd did a 100 mile attempt in 1980 also, I believe. But on his
heavy wagon wheel he was unsuccessful. I don’t doubt that speeds of 51 kph are
possible on a big wheel, but only at great personal risk (as well as risk to the
unicycle).

However I don’t know anything about this high speed ride. The speed listed
in kph suggests it was done when Floyd was in Japan, so any record of it
might exist in Japanese, or with people who were there including Sem and
Carlho Abrahams.

Stay on top, John Foss, the Uni-Cyclone http://www.unicycling.com

“Riding a unicycle has NOTHING to do with physics.” - an unnamed engineer,
trying to help adults learn to ride

RE: Coker calibrations

> With my COKER “The Big One” I am reaching speeds of just over 20 Mph, and am
> .4 seconds from breaking the Guiness record of 12.11 sec in 100 Meters. I have
> taken a couple of weeks off of the next attempt to just ride more sprints and
> practice my starts.

Wow! That’s pretty fast coming from a standing start. The existing record was
set on a Miyata 24" with (I’m pretty sure) 125mm crank arms. With mastery of
hard acceleration, a big wheel like a Coker should be able to break that record
much more easily than on a 24".

The hard part is getting it recognized by Guinness. You will need
electronic timing, lots of witnesses, and lots of documentation. Video
would be a big help too.

Good luck! John Foss, the Uni-Cyclone http://www.unicycling.com

Former record holder at 13.71

RE: Coker calibrations

The hard part is the start. I always tell people I can’t go backwards, or
juggle, just go straight fast. But the start is still a bear for me. As for the
Guiness, I have registered to break that record (fax them a request, and they
sent me a letter about the rules). I need 2 witnesses, a hand written letter
from each, a newspaper article, and if possible a picture.

Thanks for writting.

Tim

-----Original Message----- From: John Foss [mailto:john_foss@asinet.com] Sent:
Tuesday, May 30, 2000 2:34 PM To: ‘tbferry@crystalpc.com’;
‘unicycling@winternet.com’ Subject: RE: Coker calibrations

> With my COKER “The Big One” I am reaching speeds of just over 20 Mph, and am
> .4 seconds from breaking the Guiness record of 12.11 sec in 100 Meters. I have
> taken a couple of weeks off of the next attempt to just ride more sprints and
> practice my starts.

Wow! That’s pretty fast coming from a standing start. The existing record was
set on a Miyata 24" with (I’m pretty sure) 125mm crank arms. With mastery of
hard acceleration, a big wheel like a Coker should be able to break that record
much more easily than on a 24".

The hard part is getting it recognized by Guinness. You will need
electronic timing, lots of witnesses, and lots of documentation. Video
would be a big help too.

Good luck! John Foss, the Uni-Cyclone http://www.unicycling.com

Former record holder at 13.71

Re: Coker calibrations

Amelia Odens wrote:
>
> I just recently got my new Coker, and I’m loving it!

Congratulations on getting a Coker!

> However, I’m working on hooking my new Coker up with a speedometer. I’ve got
> all the necessary techonlogy, but I don’t know what wheel size to set the
> computer on. I have inch measurements, and I have centimeter measurements.
> What have you other Coker riders set yours to?

I’ve heard measurements range from 277 cm to 285 cm for the circumference of the
Coker wheel. I’ve had mine set to 282 cm before.

The best thing to do it to measure out the wheel by doing a roll out while on
the unicycle. This can be done by sitting on the unicycle and make a mark on the
floor and then another mark after going one revolution from the same point on
the wheel. This might be easiest if you have somebody to help you and make the
marks on the floor. Then measure the distance from one mark to the next. For the
best accuracy, measure it out a couple times and/or measure for multiple
revolutions.

    ___________ =================================================== ___ /_/
    / / / / Kevin Gilbertson - mail@gilby.com <a href="http://gilby.com/">http://gilby.com</a> / _ '/ / /
    _'\_ / ICQ: 12611076 AIM/AOL: UnicyclingGilby \_ /_/_/,___/ / Free
    Unicyclist.com e-Mail at <a href="http://unicyclist.com/">http://unicyclist.com</a> /\/ /__________/ World
    UNICON X: <a href="http://www.unicycling.org/iuf/unicon10">http://www.unicycling.org/iuf/unicon10</a> \__/
    ========================================================

Re: Coker calibrations

As Kevin said, make the measurement. For my weight at my tire inflation, my
measurement gave 2776mm.

—Nathan

“Amelia Odens” <ADO@unicyclist.com> wrote in message
news:20000523034806.56CCA608F@sitemail.everyone.net
> Hey all!
>
> I just recently got my new Coker, and I’m loving it! However, I’m
working on hooking my new Coker up with a speedometer. I’ve got all the
necessary techonlogy, but I don’t know what wheel size to set the computer on. I
have inch measurements, and I have centimeter measurements. What have you other
Coker riders set yours to?
>
> ~Amelia~

Re: Coker calibrations

Iwema, Dirk , GEAE wrote:
>You can set your cycle computer to what ever you want. Some people are
>concerned with accuracy. Some people are less concerned.

Go on Sarah, tell everyone the speed you clocked on your Coker on the ride
around the Solar System :slight_smile:

Danny Colyer (remove your.head to reply)
http://www.speedy5.freeserve.co.uk/danny.html “Never argue with an idiot. They
drag you down to their level then beat you with experience.” - Dilbert

RE: Coker calibrations

In article <4E66C2D7AB5DD311BBE0009027927A0A91284C@ev007msxaege.ae.ge.com>,
“Iwema, Dirk (GEAE)” <dirk.iwema@ae.ge.com> wrote:
> You can set your cycle computer to what ever you want. Some people are
> concerned with accuracy. Some people are less concerned. And some like to fool
> themselves into thinking they went farther (and
faster)
> than they actually did.
>
> My experience is that the actual distance is 3-5% less than the
stated size of
> the tire. On my 24" (1915mm calculated value) I have two settings: racing tire
> – 1905 (99%) muni tire – 1852 (97%) And still it can make a difference of
> several cm depending on the
pressure in
> the tire.
>
> Now if I really want to feel good, I set the thing to 2900mm and I do
speeds and
> distances like a coker!
>
> Dirk
>
> -----Original Message----- From: Smash Hits Magazine
> [mailto:i.o.u@mindless.com] Sent: Thursday, May 25, 2000 4:20 AM To:
> unicycling@winternet.com Subject: Re: Coker calibrations
>
> >As Kevin said, make the measurement. For my weight at my tire
inflation,
> >my measurement gave 2776mm.
>
> That’s interesting, I opted for 289cm, and I’ve heard the figure 290cm
> mentioned, that’s a whole 10-12cm (100-120mm) different !
>
> SIMON
>
> ----------------------------±--------------------------
> |
> Simon Greenway | I.O.U O
> I.O.U@mindless.com | | Romsey, Hampshire, UK. | Idiots On Unicycles #/
> | http://come.to/muni o
> ----------------------------±-------------------------- get on that on
> wheeled bike of yours and join the IOU !
> ----------------------------±--------------------------
>

With my COKER “The Big One” I am reaching speeds of just over 20 Mph, and am .4
seconds from breaking the Guiness record of 12.11 sec in 100 Meters. I have
taken a couple of weeks off of the next attempt to just ride more sprints and
practice my starts. Tim

Sent via Deja.com http://www.deja.com/ Before you buy.

Re: Coker calibrations

Danny Colyer <danny@speedy5.freeserve.co.uk> wrote:
: Iwema, Dirk , GEAE wrote:
:>You can set your cycle computer to what ever you want. Some people are
:>concerned with accuracy. Some people are less concerned.
: Go on Sarah, tell everyone the speed you clocked on your Coker on the ride
: around the Solar System :slight_smile:

54 mph, but we were ALL cycling faster than the speed of light weren’t we??

sarah I did reset the speedo before we headed back home.

Re: Coker calibrations

On Sat, 27 May 2000 13:56:38 GMT, tbferry@crystalpc.com wrote:

>With my COKER “The Big One” I am reaching speeds of just over 20 Mph, and am .4
>seconds from breaking the Guiness record of 12.11 sec in 100 Meters. I have
>taken a couple of weeks off of the next attempt to just ride more sprints and
>practice my starts. Tim

That’s awesome, Tim! In my fitter years I once clocked a 12.4 seconds for 100
meters, running, that is. Just about the average youngster I guess. I’m afraid I
would not even manage 13 seconds now. So you on your Coker would easily outpace
me running! Phew, it would be a sight!

Klaas

This message was created with 100% recycled electrons.

Re: Coker calibrations

Sarah Miller wrote:
>
> 54 mph, but we were ALL cycling faster than the speed of light weren’t we??

When going faster than the speed of light, it is very possible that the magnet
for your computer will go by so faster that it doesn’t trigger a revolution.
Hence, the incorrect reading for the speed. [The only unicycle that gets a
correct reading going faster than the speed of light is the Gilby AutoBalance
Unicycle… oh yeah, it’s not even April anymore…].

    ___________ =================================================== ___ /_/
    / / / / Kevin Gilbertson - mail@gilby.com <a href="http://gilby.com/">http://gilby.com</a> / _ '/ / /
    _'\_ / ICQ: 12611076 AIM/AOL: UnicyclingGilby \_ /_/_/,___/ / Free
    Unicyclist.com e-Mail at <a href="http://unicyclist.com/">http://unicyclist.com</a> /\/ /__________/ World
    UNICON X: <a href="http://www.unicycling.org/iuf/unicon10">http://www.unicycling.org/iuf/unicon10</a> \__/
    ========================================================

Re: Coker calibrations

In article <9vvlg8.0t1.ln@vimes.u-net.com>, Sarah Miller
<sarah@vimes.u-net.com> wrote:

>
>54 mph, but we were ALL cycling faster than the speed of light weren’t we??

yep you can walk at about 3 times the speed of light i think so everyone ws
way over that

i was there on Monday with colin and Miark and much fun it was.

www.solar.york.ac.uk for piccies of the unicyclsts

>
>sarah I did reset the speedo before we headed back home.

– Rob.

… Rob
Stone, Psychology, University of York, York, YO10 5DD. 01904 433161 chat about
BJC2k and BJC14 at http://www.bjc2k.york.ac.uk/

Re: Coker calibrations

Greetings

In message “Re: Coker calibrations”, Sarah Miller wrote…
>Danny Colyer <danny@speedy5.freeserve.co.uk> wrote:
>: Iwema, Dirk , GEAE wrote:
>:>You can set your cycle computer to what ever you want. Some people are
>:>concerned with accuracy. Some people are less concerned.
>: Go on Sarah, tell everyone the speed you clocked on your Coker on the ride
>: around the Solar System :slight_smile:
>
>
>54 mph, but we were ALL cycling faster than the speed of light weren’t we??

For a second I almost thought this may be serious!? Don’t laugh – there is a
reason. Nearly 20 years ago Floyd Crandal allegedly hit a momentary speed of 51
kph on a 54" big wheel – I am not sure of the exact facts, but I think John
Foss knows the details.

>sarah I did reset the speedo before we headed back home.
>
>

Regards, Jack Halpern CJK Dictionary Publishing Society, http://www.kanji.org
Voice: +81-48-481-3103 Fax: +81-48-479-1323

Stay on top, Jack Halpern, IUF Vice President Website: http://www.kanji.org

Re: Coker calibrations

Jack Halpern <jack@mail.hinocatv.ne.jp> wrote:
: For a second I almost thought this may be serious!? Don’t laugh – there is a
: reason. Nearly 20 years ago Floyd Crandal allegedly hit a momentary speed of
: 51 kph on a 54" big wheel – I am not sure of the exact facts, but I think
: John Foss knows the details.

Ah, but I know how I managed that reading, and so does Michel, and michel now
knows how my speedo works. I also know I was not in the saddle at the time, nor
was michel. We were just playing about.

sarah