[python] Re: Electrified!
- From: George Durbridge <gdurbrid@xxxxxxxxxxxxxx>
- To: python@xxxxxxxxxxxxx
- Date: Wed, 28 Nov 2007 11:21:46 +1100
The Python trike has been done, and it works. A trike can slowly climb
to the top of any hill, without falling over, even if you do get passed
by people walking their bikes, but you do need a low enough gear that
you are not straining to get there: because you can use lower speeds on
a trike than you could use on any bicycle, bike gears generally don't go
as low as you need.
The only Python trikes I know of are deltas (two rear wheels), but delta
trikes are dodgy beasts in corners and under brakes, unless the seat is
even lower than on most Pythons. Tadpoles (two front wheels) are
stabler, but a Python tadpole would be very complex.
A fairing for a Python would have to deal with centre steering. Would
you articulate the fairing in the middle, like a tram? If the front end
and bottom bracket could move from side to side within it, the nose
would be huge, even by faired recumbent standards.
On Mon, 2007-11-26 at 09:52 +0000, Rhisiart Gwilym wrote:
> Siwmae bechgyn (Hiya boys) and any ladies who may stray into this
> list (Don't seem to be many yet),
>
> When not lurking on the Python list, or babbling to myself in on odd
> ancient language, I surf several other fields of particular interest
> to me. One of these is the just-emerging-above-the-surface giant
> ice-berg of Peak Oil.
>
> Energy Bulletin and The Oil Drum are two of my preferred sites. I've
> just picked up this from today's TOD additions:
> http://europe.theoildrum.com/node/3275#more.
>
> On yer mettle, lads! If us recumbent wizards can't get even better
> efficiency than those inventive guys with the 500 we should hang our
> heads in shame. Having said that though, you have to admire the huge
> increases in fuel efficiency that they've made possible just with a
> bit of 'off-the-shelf' technology and some ingenuity. It's worth
> reading right through the comments at the end of the item, too. The
> TOD crowd are intelligent, well-informed above the average, and
> inventive.
>
> But it strikes me that if Ugo and friends can get this kind of
> excellent result with the weight of a Fiat 500, think what the bent
> folk could get with a seriously alleweder Python velo!
>
> I know that there are electrically-assisted velos around already.
> Just thought that Pythononauts should be up there with the
> pathfinders.
>
> Jurgen's initiative has opened up a new field in biking, I think.
> It's a sort of rule of thumb that whatever inventive bikers are
> dreaming up now was already done somewhere about a century ago, and
> subsequently forgotten. But was there ever a Python before? I think
> this might be a genuinely new innovation.
>
> Some of you will have picked up my preoccupation with
> weather-proofing any bike I use. (It rains a lot here, and I don't
> want to be forced to bike just in the Summer) Also, being an old git,
> I want to be able to wind myself up long climbs very gently -- ie,
> slowly. So I muse constantly around the idea of a trike, or a bike
> with outrigger wheel, or even retractable small stabiliser wheels for
> standing at lights or creeping uphill. All of this points towards a
> Python velo.
>
> And though not particularly interested in anything more than pure
> muscle-drive myself, I know lots of people who would start to look
> seriously at an ultra-light electrivelo, with or without pedal
> assist, as the oncoming energy crisis ramps up so hard that even we
> of the global Pampered Twenty Percent can no longer ignore/deny it.
>
> Just thought you-all might like to ruminate on this.
>
> Cofion, RhG
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