AP Pienaar wrote:

Hi

Where can I go to get help with a fiberglass or Carbon Landing

gear

design.

I have a fairly good idea of what it should look like but need

to

calculate

the ply count  or if using rofings the thickness that would give

the

right

amount of flex versus strength.

Thanks
Pine Pienaar
pine@cpro.co.za
Lancair 360 #664

Vance is pretty good with composite design.

Pine,
S-glass is used, in most cases. Haven't heard of Carbon used in this

area -

perhaps not enough flex !?
>From what I've gleaned from other sites, the legs are made and drop

tested

with desired weights representing
the different configurations and if wrong, remade (using different

numbers

of layers) and retested until deflection
and strength are confirmed.

I might be wrong about the Carbon - I do remember a company used

carbon rods

for some Dragonfly legs
but the curve had to be a gradual curve (no sharp bends) unlike the
aluminium or some S-glass legs.

Please let me know if you find some data on the construction side. I

would

appreciate some additional info.
George (down under) lendich@hypermax.net.au

The final Berkut, E-Racer legs were carbon fiber.
...Chrissi
Cozy Mk-IV 13B-turbo
www.CozyGirrrl.com

I think the Berkut uses metal oleo retracts - Carbon can be made to work
and is potentially lighter for the job than aluminum or titanium, but is
rather expensive both from materials and labor. I have been working
with Pine off list so as to reduce the non rotary exchanges. Vance

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