[python] Re: Hub gears

  • From: Torben Scheel<torben@xxxxxxxxxx>
  • To: <python@xxxxxxxxxxxxx>
  • Date: Thu, 05 Aug 2010 09:07:10 +0200

Nice work!

Is it Nylon (polyamid) bushings you have used? Are they stable enough at high effect?

Cheers,
Torben
> //-------------- Original Message: --------------
> Hi all
>
> As an inspiration a picture of my selfmade excentric bottom bracket of my airbike.
>
> Marc
>
>
> -------- Original-Nachricht --------
> > Datum: Wed, 4 Aug 2010 08:58:08 +0100
> > Von: "Boyd, Mark"
> > An: python@xxxxxxxxxxxxx
> > Betreff: [python] Re: Hub gears
>
> > Hi Gerald
> >
> > Thanks for that. It is good to know that it can be done. Have you gone for
> > an eccentric bottom bracket, or haven't you found chain tension to be an
> > issue?
> >
> > Cheers
> >
> > Mark
> >
> > -----Original Message-----
> > From: python-bounce@xxxxxxxxxxxxx [mailto:python-bounce@xxxxxxxxxxxxx] On
> > Behalf Of Gerald
> > Sent: 03 August 2010 21:11
> > To: python@xxxxxxxxxxxxx
> > Subject : [python] Re: Hub gears
> >
> > Hi Mark,
> > I use a SRAM 9-Speed hup in my python and it seems all right. It even has
> > a coaster break - nice thing, you do not have to put your hand to the
> > "handlebar" to break.
> > I think it is not a big issue with the weight of the hub while you ride
> > the python. Your legs left and right of the hup will weight a lot more than
> > the hub.
> > As far as I know, the iMotion9 I use is even heavier than the Rohloff -
> > albeit not as noble.
> > If the hub has a reasonable price, I would sugget to go ahead and get it.
> >
> > Best regards
> > Gerald
> >
> >
> > The only point I would
> >
> > Boyd, Mark wrote:
> > > Hi Everyone
> > >
> > > A friend of mine has a Rohloff speed hub that I am thinking of b uying
> > > for my python project. If I include an eccentric bottom bracket, it
> > > shouldn't need any other chain tensioning device, and may even work
> > > with a chain case. This should make for a very tidy drive train.
> > >
> > > Other than the silly price tag that this would come with, can anyone
> > > think of a reason why this wouldn't work? In particular, although I am
> > > prepared for the inevitable bruising that learning to ride will bring,
> > > do you think that having such a heavy hub will increase wheel flop and
> > > so make the learning process even harder? If so, would you advise,
> > > say, adjusting the steering head angle and if so to what?
> > >
> > > Thanks in anticipation.
> > >
> > > Mark
> > >
> > >
> > >
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