of seatposts and hubs

Now obviously if a guy wants to custom make a unicycle, only a COMPLETE fanatic
would try to make his own hub. So where would somewhat less of a fanatic buy a
simple, already made unicycle hub? (Preferably one that will last.) How about a
seat? Chris


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Re: of seatposts and hubs

Chris wrote:

> Now obviously if a guy wants to custom make a unicycle, only a COMPLETE
> fanatic would try to make his own hub. So where would somewhat less of a
> fanatic buy a simple, already made unicycle hub? (Preferably one that will
> last.) How about a seat?

The Unicycle Factory can supply you with aluminium cranks (152 Dotek ones for
definate), Mayiata Seats and hubs. The other place in the US that definately
sells Miyiata Seats and also has 5" aluminium cranks is Osells in
Minneapolis. If you are in the UK there is a new source of 152 Dotek cranks,
a uni-firendly biek shop in Glourcester tel: 01453 753330 and ask for Shane.
As for light weight hubs, the answer is not far off I have a design and only
on Friday found someone very willing to maufacture them: but they will need
new bearing housings.

Roger

          ----------------------------------------------------
                       Roger.Davies@Octacon.co.uk
                      Stockton, North East England

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Re: of seatposts and hubs

John wrote:

> Roger Davies wrote:
> >As for light weight hubs, the answer is not far off I have a design
> and
> >only on Friday found someone very willing to maufacture them: but
> they
> >will need new bearing housings.
>
> Do tell more! I’m about (I hope) to have something made for me. But I would
> much rather buy a hub and bearing housings from you than go through the hassle
> of having different ones made out here.

You might need a whole new uni I am afraid. Ok here goes…Design is, 25mm od
CrMo tube with flanges welded on: This is the core and it will be bomb proof it
is well tested by the BMX guys. The bearings will be spaced from the flanges and
press fitted onto the shaft as normal, and now the nasty bit for you, the
bearings 6005-2RS id25 od47 12thk. Basically you will need new bearing housings.
These bearings are the smallest available and are catagoried as extra light load

  • but it is still a higher load than the 6207 used in the best uni’s. The Cranks
    will need to be specially made and will be a split broached tube with a pinch
    boilt system. Material again CrMo which should make it strong and light. The
    frame builder is working on a design that would allow the clamp to be on the
    pedal side of the hub - definately a need to protect feet and allow silly things
    like crank idling. OK I admit it this is the best but requires a major re-design
    to the unicycle. Plan B is to use 20mm od Tubing and 6004 bearings. With only a
    slight mod my uni’s can be used as the OD of the bearing is 42mm. It would be
    heavier though and probably not as durable, but conciderably better than a
    normal uni. Completion of project… I asked the same, I will ask again
    tomorrow but on first try he thought 2 months to sort the design out. Thats
    all…

> I know you have a love for lightness.

yep…You should feel the weight of my new 5.5’ Giraff! same weight as
my Mk2 uni

Roger

          ----------------------------------------------------
                       Roger.Davies@Octacon.co.uk
                      Stockton, North East England

For information on the Durham Juggling Festival
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Re: of seatposts and hubs

JohnX Foss wrote:

> Have you done any experimenting with suspension seatposts?

Hi John, I brougt Takafumi Ogasawara’s 2-seatpost suspension unicycle to UNICON
8. Because of the 2 seatposts its somewhat heavy and maybe does not suit Roger’s
wishes. Furthermore because of the 2 seatposts the mass is not concentrated in
the center and it got a big momentum. If not me I assume somebody else will
bring it to UNICON 9, maybe even Takafumi will go there.

Jochen

Re: of seatposts and hubs

Jochen Loeffelmann wrote:

> JohnX Foss wrote:
>
> > Have you done any experimenting with suspension seatposts?
>
> Hi John, I brougt Takafumi Ogasawara’s 2-seatpost suspension unicycle to
> UNICON 8. Because of the 2 seatposts its somewhat heavy and maybe does not
> suit Roger’s wishes. Furthermore because of the 2 seatposts the mass is not
> concentrated in the center and it got a big momentum. If not me I assume
> somebody else will bring it to UNICON 9, maybe even Takafumi will go there.

Sounds fun I look forward to seeing it… I forgot to mention that I have
just got a USE Suspension post for my Muni. Need I say it is light. It has a
25.0 dia shaft and about 25mm movment and is 180mm long. USE have agreed to
produce a specialy short version for uniyclists and is available through Bike
Scene (01287 610 735) for
69.ukp.

Have fun

Roger

          ----------------------------------------------------
                       Roger.Davies@Octacon.co.uk
                      Stockton, North East England

For information on the Durham Juggling Festival
http://homepages.enterprise.net/mini/fest98.htm

          For information on The British Unicycling Convention
             <a href="http://homepages.enterprise.net/mini/buc5.htm">http://homepages.enterprise.net/mini/buc5.htm</a>