Paul
Here is a simple suggestion for restricting the leaning angle for learning
purposes (thank you for asking, I was asking myself).
If both cranks face the same direction, then there should be no leaning,
right?
So it's not something you can change in a second, but you can probably
change it in a minute or two.
The center of the bottom bracket will drop by the length of the cranks and
will change the pivot angle and thus the steering but probably not much.
If that is a problem, you could use a brace to line up the frame and the
cranks.
Does this sound sensible?
Jim
On Mon, Apr 13, 2015 at 6:59 AM, paul needham <paul.2.needham@xxxxxxxxx>
wrote:
Vi
Excellent answer thanks.
As far as my trike goes I looked at the current wheel base and it is much
to short to have one wheel 7" further forward than the current position it
would overlap the front wheel and interfere with the handle bars !
I do have a bike that I built that is really to high to reach the ground
with your hands and so I have little success learning on it.
Maybe I can make a bolt in unit from a sealed BB to replace the rear wheel
, what do restrict the lean angle to from the point of view of a learning
aid ?[ sorry if you have already mentioned this and I have missed it :-) ]
thanks again Paul
On 13/04/15 08:12, Vi Vuong (Redacted sender vi_vuong@xxxxxxxxx for
DMARC) wrote:
Hi Paul============================================================
Assuming your wheels are 20" and 7" cranks, you can tilt a 33" track to
about 22 degrees. There is an extra 5" of track at full tilt via the crank.
With limited lean angle, you will need to maintain course once you reach
full tilt which takes some practice but it is kind of nice to cruise thru a
corner without balancing. However speeding up or applying front brake may
send you off to the ground just like a delta trike would. Is safer than a
wide-track trike? Most likely no.
At rest it won't fall over, just testing on one side :). You can add some
friction to resist leaning depending the load. You can lock the wheel to
the frame to keep the trike from leaning and moving...
Suspension works as long as both wheels don't hit bump at the same time.
7" cracks and 20" wheels may have clearance issue.
Is it worth it? Yes if you want to learn or miss riding a python bike.
Maybe a quick release tilt lock is good in this case...
Vi
On Apr 12, 2015, at 1:26 PM, paul needham <paul.2.needham@xxxxxxxxx>
wrote:
Hi all
I have a Python trike based on Triked USA in the Trike pages , the rear
track is 33" [ 84 cm ] ground clearance 5" [ 125 cm ].
If I was to build a wide iLean rear end bolting it to the trike rear end
keeping the 33" track and relocate the 2 rear wheels to the iLean mechanism
like this :- http://www.bentrideronline.com/messageboard/showpost.php?
p=1299422&postcount=2
What would be the result ?
a) get the suspension effect of iLean ?
b) would it stay upright like the trike does ? or would it fall over
like a bike with a one piece BB iLean ? with me sat on it.
c) would it stay upright like the trike does ? or would it fall over
like a bike with a one piece BB iLean ? without me sat on it.
d) lean into corners like a bike ?
e) will there be a limit to the lean that may compromise it's safety
corning hard ? [ ie ground strike of some part of it ?]
Any negatives ?
I am short of those 1 pieces BB's however I do have a surplus of 14mm
axled BMX wheels and sealed BB's and normal 3 piece cranks.
So :-
I see pedal axles are approx 14mm as are BMX axles ?
So if I file out the axle holes in the cranks I can bolt BMX wheels to
the cranks mounting them single sided ?
regards Paul
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