Geared Unicycle

I had the opportunity to ride your geared unicycle in Marietta, GA, with John
Drummond. I am impressed with the speed of the cycle. I have a Coker with 6
inch crank arms and the geared unicycle was faster than my Coker. In
addition to the speed I was also impressed with the size.

John said to offer my comments both positive and negative. I’ve mentioned
the positive. On the improvement side, the play in the hub makes the ride
less smooth than if there was no play. I was also uncomfortable trying to
turn the unicycle.

It was fun to ride the cycle. What a great concept.

Thanks!

Chris Neal
Marietta, GA

RE: Geared Unicycle

Chris Neal is a fellow Cokerhead in my neighborhood. We rode together
on Saturday, he on his Coker and me on the Uni.5. I counted my pedal
rotations and watched his. It appears that the Uni.5 is geared to a
wheel size slightly larger than 36 inches. Covering the same ground at
the same speed, my pedal strokes were fewer.

First impressions: Mark Scarbrough and I both had difficulty mounting
it at first. Free mounting was quickly ruled out after three tries. We
got on the old-fashioned way: we held onto the dumpster behind our
warehouse, and then carefully got on. Then we both managed only two or
three revolutions before losing control and stepping off the front.
After we got the hang of it and congratulated ourselves for doing so, it
was a fun ride.

The slop that Chris mentioned in the gearing felt strange, but after a
mile or so I wasn’t thinking about it. Some behaviors mimic the Coker,
such as the momentum factor and the difficulty in shifting weight to
maintain balance at low speed. But these are overcome as quickly as on
the Coker.

We dressed up the Uni.5 with a few improvements:

  •      Sun BFR black 36-spoke rim
    
  •      Kovachi wheel building services
    
  •      IRC Metro 24 x 2.0 street tire (85 psi)
    
  •      Viscount saddle (Greg's preference over Miyata due to
    

available seat post lengths)

  •      Lasco alloy 140-mm black cranks (125-mm preferred, but we
    

currently have no alloy 125-mm cranks)

The most startling thing about the Uni.5 is the speed. You don’t
realize how fast you’re going until you follow and then pass a Coker
that’s going fast. It’s difficult to imagine riding at Coker speeds on
a much smaller wheel.

Chris and I rode Cokers home from church on Sunday, about 5 miles. Our
oldest son Casey rode the Uni.5. Our two youngest sons were on bikes.
Casey left us all in the dust. I attribute much of that to his youth
and the fact that we waited while the bicyclists took frequent water
breaks.

Several of Casey’s unicyclist friends at church tried the Uni.5 again
and again. Some of their dads asked how much it’ll cost. That’s a good
sign :slight_smile:

In summary, the Uni.5 geared hub is a thoughtful leap into a technically
advanced unicycle. It’s one fun ride. For those who travel and want to
take their distance cycle with them, it’s perfect. We’re anxious to try
it out on a 700c (28-inch) rim.

Best regards,

John Drummond

1-800-Unicycle

-----Original Message-----
From: rsu-admin@unicycling.org [mailto:rsu-admin@unicycling.org] On
Behalf Of Nealc54@aol.com
Sent: Tuesday, April 30, 2002 10:19 PM
To: rsu@unicycling.org
Cc: john@unicycle.com
Subject: Geared Unicycle

I had the opportunity to ride your geared unicycle in Marietta, GA, with
John

Drummond. I am impressed with the speed of the cycle. I have a Coker
with 6

inch crank arms and the geared unicycle was faster than my Coker. In

addition to the speed I was also impressed with the size.

John said to offer my comments both positive and negative. I’ve
mentioned

the positive. On the improvement side, the play in the hub makes the
ride

less smooth than if there was no play. I was also uncomfortable trying
to

turn the unicycle.

It was fun to ride the cycle. What a great concept.

Thanks!

Chris Neal

Marietta, GA



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Re: RE: Geared Unicycle

snip

Re: Re: RE: Geared Unicycle

John-

Thanks so much for the generous upgrades. Apparently they make a significant improvement in the performance. I guess Chris’ snip message indicates that he wanted the improvements BEFORE it left Jackson.

It’s interesting that you measure it as having a larger effective diameter than the Coker. By how much? This should only reflect variations in the actual tire diameters from the published tire diameters.

Re: Geared Unicycle

“John Drummond” <john@unicycle.com> wrote in message news:mailman.1020275943.30285.rsu@unicycling.org

We dressed up the Uni.5 with a few improvements:

· Sun BFR black 36-spoke rim

· Kovachi wheel building services

· IRC Metro 24 x 2.0 street tire (85 psi)

· Viscount saddle (Greg’s preference over Miyata due to available seat post lengths)

· Lasco alloy 140-mm black cranks (125-mm preferred, but we currently have no alloy 125-mm cranks)

Hey, who decided the Uni.5 would tour the U.S. counter-clockwise?

Doug

Re: Re: RE: Geared Unicycle

I managed to take my electronic foot out of my mouth before it was to late.

Greg, have you played with the other monst- uhh, excuse me- hub yet?

Christopher

Re: Re: Re: RE: Geared Unicycle

Yeah, I got lonely for the uni.5 so I put the second hub together and I play with it from time to time. The tolerances for the bearing press fit on one side is such that it can be easily separated into three pieces so that its function can be easily studied. Eye candy for NAUCC/UNICON.

Re: Re: Geared Unicycle

I did. I wanted it to follow the weather. And I wanted it to pick up the first high tech accessory in Oklahoma…a dial indicator to check the backlash. Thanks, Doug.

!

cowuni.jpg

Jagur-

Thanks so much for the photo. A picture is worth a thousand words. Thanks for not writing the thousand words, also.

Is that a seat cover? I would really like a pic of you riding on that seat cover.

Whooooa, WHOA! Wait just a minute- Greg, what happened to the “I’m sorry, I’ll never ask for pictures again” promiss after the ‘Gent in Skirt’ incident? Jagur- and a freak’n cow? This could be BAD- where’s your sence, man?

Christopher

My sense is often superceded by my passions.