Hi, I'm a bit of a lurker here! My masters degree supervisor Mark
Richardson did a phd on just the topics talked about in the new wiki
page, open source designs & 3d printers & velomobile building. Quite
a few of his articles are online but I found this video which might be
a good introduction https://www.youtube.com/watch?v=1iGHkW8d28U
And my entire masters thesis / exegesis on leaning trikes using Vi
Vuong's (Hi Vi!) rear wheel setup is online, you can get to it via my
publications page at http://www.modularbikes.com.au/publications.html
Regards
Steve Nurse
Jürgen Mages hat am 23. Oktober 2018 um 09:06 geschrieben:
Agreed - I think, this is the way to go.
Just a reminder that there is a page in our wiki dedicated to collect
corresponding ideas and infos and everyone is invited to contribute:
http://en.openbike.org/wiki/3D-Printing_and_CNC-Milling [1]
People should be enabled to build their bikes without the hassle of
heavy engineering, special skills and expensive tools. I hope to have
more time in winter to push this development.
Imagine we could develop a scalable spaceframe model, where the user
specifies his geometric requirements and everything else is calculated
automatically ... He then only has to cut the tubes, 3d-print the
connections, assemble the frame and fix the nodes.
Regards,
Jürgen.
On 23.10.2018 07:59, Christian Winkgen wrote:
Just seen it - awesome!
I wonder how it feels riding it. Can imagine there is still a bit
flexibility in the frame - but who knows?The wheelbase is quite short
and the seat high. So it’s supposed to be agile and turning quickly
but still easy to ride because of the high COG?
What about doing something similar / parametric using rod end bearings
and lightweight steel tubes - like the front suspensions on formula
racecars?With the threade d end yo u can still fine-tune the geometry
or just replace a part with a short or longer version if needed.
There was a rumored development of a Moulton spaceframe „MDev 90"
version with carbon tubes being pulled together by tensioned wire
running inside (somehow like a
spoke):https://www.moultonbuzz.com/models/mdev-90/ [2]
https://www.flickr.com/photos/moultonbuzz/4508229953/in/photostream/lightbox/
[3]
Even this kind of frame could have been scaled easily by changing the
tube sizes.
Cheers, Christian
Am 22.10.2018 um 21:50 schrieb Jürgen Mages < jm ages@xxxxxx [4]>:
Anyone remembers the picture of that prototype some years ago? I found
it amazing but there was no additional info and nobody thought it
could work ...
Well now here is finally a project page with some videos and specs:
https://dbrcracing.wordpress.com/2018/06/17/pvc-and-duct-tape-python-low-rider-recumbent/
[5]
Kudos to this guy. I am still dreaming of a parametric frame
construction made of tubes and 3d-printed lugs - and this comes close.
Jürgen.
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Links:
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[1] http://en.openbike.org/wiki/3D-Printing_and_CNC-Milling
[2] https://www.moultonbuzz.com/models/mdev-90/
[3]
https://www.flickr.com/photos/moultonbuzz/4508229953/in/photostream/lightbox/
[4] mailto:jmages@xxxxxx
[5]
https://dbrcracing.wordpress.com/2018/06/17/pvc-and-duct-tape-python-low-rider-recumbent/
