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1. 01:10 AM - Re: FW: New Gear Lightning (James, Clive R)
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| Subject: | FW: New Gear Lightning |
Is that a red and white plane? All planes should be red and white!
Do you have the phrase 'bandy'in the US.. That's one 'bandy U/C', is it
a better ride?...... :-)
-----Original Message-----
From: owner-lightning-list-server@matronics.com
[mailto:owner-lightning-list-server@matronics.com] On Behalf Of
flylightning
Sent: 22 April 2010 22:12
Subject: Lightning-List: FW: New Gear Lightning
Dennis,
Here is a copy of an email I sent to ryan about the new gear sho0uld
give a good idea of how to install the torque supports.
Add to the center of the fuselage against the seat bulk head in the
center; 8 layers 10oz glass 3" by 6" , than 2 layers 10oz glass 6" by
6" .; this will build up the plys for the correct structure.
Nick
________________________________
From: flylightning [mailto:info@flylightning.net]
Sent: Thursday, March 04, 2010 3:55 PM
Subject: New Gear Lightning
Ryan,
Here are 2 good pictures of the landing gear. The first is head on ,
should give a good idea of the difference in the stance and track.
Second is the upgrade to the box, similar to the old box just a
different configuration.
The main reason for the change was the factory built LS-1, and the
possibility of it being in a flight school. The original gear is more
than sufficient for a current pilot. It was designed to be a good gear
and be lighter weight. We new the offset to this would be a gear that,
should it be dropped in hard could bend but not break. We designed it to
do this so the load would not transfer to the airframe and the only
damage would be a 70 dollar gear leg.
The new gear design is only slightly heavier at about 2lbs a side so the
weight vs benefit in structure is reasonable. The new gear has a much
shallower angle than the old gear. This allow no increase in aircraft
height but a longer leg which can flex more and put up with abuse
better, ie a longer bending moment with more flex. The leg is larger at
the top and bottom than the old and incorporates multiple tapers to
bend and flex appropriately.
Drop test with the old gear showed what we thought, deformation of the
gear when a dead drop from 20" is performed. However the gear did not
fail.
The new gear is ASTM compliant and went thru the above drop test with no
issue and several other drop situations and well. In fact due to our
nature ( guys trying to break stuff) we dropped the new gear over a
dozen times from varying heights and never did it bend of fail in any
way.
The new gear will eventually be added to the kit aircraft as well and
the old gear will be eliminated all together. For now the new gear
design can be part of a kit upon request. We have a few of the original
gear boxes to use and those will be supplied with kits until we are out
or if the customer specifically request the new design. Either way it is
your choice.
Nick
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