[python] Re: Front suspension update
- From: Vi Vuong <vi_vuong@xxxxxxxxx>
- To: "python@xxxxxxxxxxxxx" <python@xxxxxxxxxxxxx>
- Date: Fri, 25 Nov 2011 09:17:51 -0800 (PST)
Ron,
At 5,8" height and 41" x-seam, lowracer = 20in for me, 24" = midracer, 26"+ =
highracer?
correction:
In the video, going left is [slower] than going right
Vi
>________________________________
> From: Ronald Hongsermeier <rwhongser@xxxxxx>
>To: python@xxxxxxxxxxxxx
>Sent: Friday, November 25, 2011 8:50 AM
>Subject: [python] Re: Front suspension update
>
>
>Thanks Vi, how tall are you, what is your x-seam length?
>
>regards,
>ron
>
>
>On 25.11.2011 17:39, Vi Vuong wrote:
>
>>
>>Hi Ron,
>>
>>
>>
>>
>>In the video, going left is faster than going right. The tires are about the
>>same pressure, although it seems that the 20" is software, probably because
>>it takes more hit. Some instance you can see that the rear 24" takes more
>>hit then then front, at slower speed.
>>
>>
>>The 20" feels rougher, but I can't feel any difference in steering
>>disturbance vs. the 24". Will need compare random bumps on the trail...
>>
>>
>>Vi
>>
>>
>>------------------------
>>
>>
>>Hi Vi,
>>Can you give us a reaction, maybe also on the python list of what your
>>subjective feeling was while riding the different bikes? Great vids in
>>general from you by the way!
>>regards,
>>Ron Hongsermeier
>>
>>
>>
>>>________________________________
>>> From: Vi Vuong <vi_vuong@xxxxxxxxx>
>>>To: "python@xxxxxxxxxxxxx" <python@xxxxxxxxxxxxx>
>>>Sent: Thursday, November 24, 2011 11:16 PM
>>>Subject: [python] Re: Front suspension update
>>>
>>>
>>>Hi Patrick,
>>>
>>>
>>>It seems stiffer, but I have to get on the same dirt trail to see.
>>>http://youtu.be/jY9ddGeVl9w
>>>
>>>
>>>
>>>
>>>
>>>Vi
>>>
>>>
>>>
>>>>________________________________
>>>> From: Patrick van Gompel <patrick_van_gompel@xxxxxxxxxxx>
>>>>To: python@xxxxxxxxxxxxx
>>>>Sent: Thursday, November 24, 2011 10:16 AM
>>>>Subject: [python] Re: Front suspension update
>>>>
>>>>
>>>>
>>>>Wow, that was a quick modification! Nice use of some old handle bars. And
>>>>glad to see the idea was of some help.
>>>>Do you notice any difference when
riding / hitting bumps?
>>>>
>>>>Patrick
>>>>
>>>>
>>>>
>>>>________________________________
>>>>Date: Wed, 23 Nov 2011 20:17:42 -0800
>>>>From: vi_vuong@xxxxxxxxx
>>>>Subject: [python] Re: Front
suspension update
>>>>To: python@xxxxxxxxxxxxx
>>>>
>>>>
>>>>Thanks Steffen and Patrick for concerns and ideas. I have added two tubes
>>>>(handle bars) as Patrick suggested, which also strengthens the shock joint.
>>>> I promise not to do any jumping unless in controlled testing (safe). The
>>>>original goal is to see how much front suspension can reduce road
>>>>disturbance to steering, which perhaps can compensate for smaller wheels /
>>>>tires...
>>>>
>>>>
>>>>Steffen's idea is similar to this full suspension python built in 2008,
>>>>http://www.flickr.com/photos/python_uploads/2827143639, which I wish I saw
>>>>before building mine. This design seems stronger / lighter / more compact.
>>>> Any thoughts?
>>>>
>>>>
>>>>Vi
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>>________________________________
>>>>> From: Steffen Risse <big.skangster@xxxxxxxxxxxxxx>
>>>>>To: python@xxxxxxxxxxxxx
>>>>>Sent: Wednesday, November 23, 2011 7:43 AM
>>>>>Subject: [python] Re: Front suspension update
>>>>>
>>>>>
>>>>>Hello Vi,
>>>>>
>>>>>the idea is nice
and brings some
ideas for me
too, but Patrick
is absolute
right when he
says that the
system doesn't
looks very
stable. I'm
working with
welding every
day, and when I
saw the point
where the frame
broke, I didn't
wondered about
the crack. The
frame is
relative slim at
that point and
your weld seems
are for sure no
beauties. I like
all your
projects, as
they include so
many clever
ideas, and I
don't wanna hear
something like
"his frame broke
in heavy traffic
and ...". So
there are to
ways. 1: built
the frame
geometries that
they meet the
load conditions
better (long
lever = high
profile) 2. get
better knowledge
of welding and
clean the parts
better before
welding (no
chrom, no
paint). Sorry
for theharangue but
some of that what I saw scares me.
>>>>>
>>>>>Here 2 ideas
from me to your
suspension
project. Maybe
they are better
(maybe not)
>>>>>
>>>>>regards,
>>>>>Steffen
>>>>>
>>>>>
>>>>>
>>>>>>>>>>________________________________
>>>>>From: Patrick van Gompel <patrick_van_gompel@xxxxxxxxxxx>
>>>>>To: python@xxxxxxxxxxxxx
>>>>>Sent: Wednesday, November 23, 2011 5:24 AM
>>>>>Subject: [python] Re: Front suspension update
>>>>>
>>>>>
>>>>>Hey Vi,
>>>>>
>>>>>Front wheel
suspension:
wow, nice
build.
>>>>>Except for the
'front part -
pivot'
attachment the
'suspension
fork to frame
tube' seems a
little weak
too. Why not
weld two extra
tubes left and
right of the
front wheel to
make a
triangle (as
in the
attached
picture). Just
an idea to
make your ride
safer...
>>>>>
>>>>>Happy cycling,
>>>>>Patrick
>>>>
>>>>
>>>
>>>
>>________________________________
>>
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11/24/11
>
>
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