Crazed inventor rides geared unicycle

Crazed inventor rides geared unicycle

Post by harpe » Wed, 20 Feb 2002 16:37:48


I got the wheel back from the wheel builder today and then built the
geared unicycle tonight.
http://www.harper.unicyclist.com/FiniUni.htm

THIS UNICYCLE
SCREAMS!! It is sooooooo fast! I need to buy an asbestos suit to keep
from scorching myself at these high Mach numbers. It was VERY
difficult to freemount which is no surprise since it doesn't act like
a 24" wheel...it just looks like one. I didn't notice the seat being
pushed out from underneath me or any torque around the seatpost axis
as I had feared. The measured backlash at the pedals was 0.055" which
was more than the 0.020"-0.040" that I expected but I did have to add
some slop in the planet shafts. I have been riding a giraffe lately
and the backlash of this geared hub is much, much less than the chain
slack of a giraffe. I put a 24" by 2.125" Kenda tire on it which is
too fat for the Torker frame and rubs on one side. I will switch to a
1.75" tire soon.

Yes...you may ride it at NAUCC and UNICON in July.
I will get some seats and seatposts and jazz the now el-cheapo
unicycle up with some higher end components now that I know it works.
I'll try not to break it before that.

--
harper
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Crazed inventor rides geared unicycle

Post by onlyonewhee » Wed, 20 Feb 2002 17:27:50

Harper--

     Whoo Hoo ! ! ! you're officially in the Unicyclist's
Hall of Fame (right? :) )

     An excellent ending to a most
fascinating story.  It's been exciting following your progress and
quite exhilarating to see you finally finish.  Thanks for being so
faithful to posting your progress on your site.

hmm...now I just
have to figure out how I'm going to pull together enough money to go
to NAUCC and UNICON so I can try this thing out.

--
onlyonewheel
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Crazed inventor rides geared unicycle

Post by John » Wed, 20 Feb 2002 18:47:58

  Congrats, Greg.   I am very impressed with this whole project.

  The pictures didn't show up, though.  It looks from the html source as
though it's looking for a file locally on the C: drive for the pictures
and one of the links.  I'm definitely eager to see it, so I thought I'd
mention that.

John

Quote:

> I got the wheel back from the wheel builder today and then built the
> geared unicycle tonight.
> http://www.harper.unicyclist.com/FiniUni.htm


 
 
 

Crazed inventor rides geared unicycle

Post by teachnda » Wed, 20 Feb 2002 21:57:50

Harper,

Congrats Too and Job Well Done!:D

I also couldn't see
the pix.  

Work the maze.

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Crazed inventor rides geared unicycle

Post by Neil Dunlo » Wed, 20 Feb 2002 22:17:03

I had to have a peak at those pics and managed to track them down to:

http://www.harper.unicyclist.com/Epicyclic Hub Project/Hub-Photos/whlrt.JPG
http://www.harper.unicyclist.com/Epicyclic Hub Project/Hub-Photos/whltp.JPG
http://www.harper.unicyclist.com/Epicyclic Hub Project/Hub-Photos/unirt.JPG
http://www.harper.unicyclist.com/Epicyclic Hub Project/Hub-Photos/unilt.JPG
http://www.harper.unicyclist.com/Epicyclic Hub Project/Hub-Photos/unifrm.JPG
http://www.harper.unicyclist.com/Epicyclic Hub Project/Hub-Photos/guni.jpg

Brilliant Harper! Quite quite brilliant :)

Neil

Quote:
-----Original Message-----

teachndad
Sent: 19 February 2002 12:58

Subject: Re: Crazed inventor rides geared unicycle

Harper,

Congrats Too and Job Well Done!:D

I also couldn't see
the pix.

Work the maze.

--
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Crazed inventor rides geared unicycle

Post by Neil » Wed, 20 Feb 2002 22:37:51

Okay... those links didn't quite work when I sent them in via email so
here's the forum attempt
http://www.harper.unicyclist.com/Epicyclic Hub Project/Hub-
Photos/whlrt.JPG

 http://www.harper.unicyclist.com/Epicyclic Hub
Project/Hub-Photos/whltp.JPG
http://www.harper.unicyclist.com/Epicyclic Hub Project/Hub-
Photos/unirt.JPG

 http://www.harper.unicyclist.com/Epicyclic Hub
Project/Hub-Photos/unilt.JPG
http://www.harper.unicyclist.com/Epicyclic Hub Project/Hub-
Photos/unifrm.JPG

 http://www.harper.unicyclist.com/Epicyclic Hub
Project/Hub-Photos/guni.jpg

Cheers,
Neil

--
Neil
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Crazed inventor rides geared unicycle

Post by Animatio » Wed, 20 Feb 2002 23:07:50

Harper,

Congrats on the working prototype! Sounds fun! You should
fix the image links though.

Do you know anybody with a camcorder?
Or even one of those Sony still cameras that can take 15+ seconds of
movie footage?

I'd love to see you pedaling that thing around, even
for 3-4 seconds.

Again, congrats! It looks cool.

Lewis

--
Animation
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Crazed inventor rides geared unicycle

Post by Mark Wiggin » Wed, 20 Feb 2002 23:38:50

Quote:

> Okay... those links didn't quite work when I sent them in via email so
> here's the forum attempt
> http://www.harper.unicyclist.com/Epicyclic Hub Project/Hub-
> Photos/whlrt.JPG

Neil (et al.)

The links worked for me (using Netscape) as long as I replaced the
spaces with "%20" (without the quotes).

Regards,
Mark.

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Crazed inventor rides geared unicycle

Post by harpe » Thu, 21 Feb 2002 01:37:52

I think I fixed the links. If I had half a brain they would have
worked right the first time. I've had this problem before and had to
not only edit the links but also delete and then reload the photos
into the right location.

I forgot to list the completed weight
which was 15 pounds 5 ounces or 7 kg.

Please let me know if you can
find these photos with the link I gave originally:
http://www.harper.unicyclist.com/FiniUni.htm

Thanks.

--
harper
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Crazed inventor rides geared unicycle

Post by Animatio » Thu, 21 Feb 2002 01:57:55

Harper,

I see the images inline on your page perfectly now.
Very cool!

So, I'm new to unicycles. How does that weight (7kg)
compare to other street unicycles (I'm assuming this would be a street
cycle)?

Lewis

  > I forgot to list the completed weight which was 15 pounds 5
  > ounces or 7 kg.
  > Please let me know if you can find these photos with the link I gave
  > originally:
  >  http://www.harper.unicyclist.com/FiniUni.htm
  > Thanks.

--
Animation
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Crazed inventor rides geared unicycle

Post by rhyslin » Thu, 21 Feb 2002 02:17:53

I highly recommend that be an asbestos leasure suit.   Ya, that's
right- bomp- chika - chaw!   Oh- YA!

Christopher

  >  I need to buy an asbestos suit to keep from scorching myself at these
  >  high Mach numbers.

--
rhysling
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Crazed inventor rides geared unicycle

Post by rhyslin » Thu, 21 Feb 2002 02:17:54

How did the frame flange end up working?   Is it plenty tight and
strong enough?   Was it screwed together (as planed?)?  :)
Christopher

--
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Crazed inventor rides geared unicycle

Post by Andrew Feldhau » Thu, 21 Feb 2002 03:47:12

Well done, Harper!
You're an inspiration.

How long 'till we see epicyclic unicycles at unicycle[.uk].com ? :-)
When are you going to put one on a coker and break some records (or
limbs...) ?

Andrew
0xADF


Quote:
> I got the wheel back from the wheel builder today and then built the
> geared unicycle tonight.
> http://www.harper.unicyclist.com/FiniUni.htm

> THIS UNICYCLE
> SCREAMS!! It is sooooooo fast! I need to buy an asbestos suit to keep
> from scorching myself at these high Mach numbers. It was VERY
> difficult to freemount which is no surprise since it doesn't act like
> a 24" wheel...it just looks like one. I didn't notice the seat being
> pushed out from underneath me or any torque around the seatpost axis
> as I had feared. The measured backlash at the pedals was 0.055" which
> was more than the 0.020"-0.040" that I expected but I did have to add
> some slop in the planet shafts. I have been riding a giraffe lately
> and the backlash of this geared hub is much, much less than the chain
> slack of a giraffe. I put a 24" by 2.125" Kenda tire on it which is
> too fat for the Torker frame and rubs on one side. I will switch to a
> 1.75" tire soon.

> Yes...you may ride it at NAUCC and UNICON in July.
> I will get some seats and seatposts and jazz the now el-cheapo
> unicycle up with some higher end components now that I know it works.
> I'll try not to break it before that.

> --
> harper
> Posted via the Unicyclist Community - http://unicyclist.com/forums

 
 
 

Crazed inventor rides geared unicycle

Post by harpe » Thu, 21 Feb 2002 04:17:53

The frame flange was a cut and fit project using the designed
frame tab out of 0.075" stainless sheet and a clamp wrapped around the
fork to fit made from 0.050" stainless. It is screwed together using
button head screws, 8-32 x 1/4.

I can't see these images using
Netscape 4.79 although I used the composer from Netscape to last edit
the page. I can see them with Netscape 6.x and MS Explorer. Anyone
know why this would be?

  > How did the frame flange end up working? Is it plenty tight and strong
  > enough? Was it screwed together (as planed?)? :)
  > Christopher

--
harper
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Crazed inventor rides geared unicycle

Post by Klaas B » Thu, 21 Feb 2002 08:12:44

Oow oow, will this be the last installment of our serial story? <snif>
Well then, thanks Harper for throwing this technology push at our
developing sport, and for the excellent way you did it at that (both
technically, as far as I can judge, and communication-wise).

The fixed pic links work fine. I would say that the unicycle looks
conspicuously normal to the casual observer. I'm afraid I won't come
to NAUCC or UNICON to try it but I'm sure it would be a blast to ride.

You said it's very difficult to mount. Would that be because you see a
24" wheel, therefore you act as if it is one? I reckon it would be
easier to mount than a Coker (same distance per rev but lower height)
if only you could put your reflexes aside. Or learn new ones.

Congratulations once more on a great project!
Klaas Bil

On Tue, 19 Feb 2002 16:37:52 +0000 (UTC), harper

Quote:

>Please let me know if you can
>find these photos with the link I gave originally:
>http://www.harper.unicyclist.com/FiniUni.htm

>Thanks.

>--
>harper
>Posted via the Unicyclist Community - http://unicyclist.com/forums

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