Helicycle Elastomeric Bearings?

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I just came across the patent to the R22 hub system and quickly
discovered that it does not use elastomneric bearings as I had been
told. The hub design, at least externally, appears to be very similar
to that which is used on the helicycle and mini-500.

The photos I have of the helicycle hub clearly show grease fittings.
This is not something that would be on an elastomeric bearing. I
don't have the diagrams to either the helicycle or the mini-500, but
the helicycle web site claims that the hub uses elastomeric bearings.

Is there someone out there who knows the answer to this puzzle and can
explain it?

Dennis H.



Dennis Hawkins
n4mwd AT amsat DOT org (humans know what to do)

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[Bill Chernoff]

The way I understand it, the feathering bearings and teetering bearings are
greased,
and the elastomeric bearings are not.

[Sla#s]

"Bill Chernoff" > wrote in message
news:m9ssb.375740$6C4.108335@pd7tw1no...
> The way I understand it, the feathering bearings and teetering bearings
are
> greased,
> and the elastomeric bearings are not.
>

You don't grease the R22 head. It has Teflon bearings to flap and teter. The
Feathering bearings are ball type in an oil bath and sealed for life.

Slatts.

[Dave Jackson]

Does anyone know if there is any company that produces a range of stock (off
the shelf) elastomeric bearing?

Thanks.

[Sla#s]

"Dave Jackson" > wrote in message
news:w2vsb.376434$6C4.169822@pd7tw1no...
> Does anyone know if there is any company that produces a range of stock
(off
> the shelf) elastomeric bearing?
>

There are hundreds of them. Just look in any car dealers stores.
All automotive engine mounts, suspension bushes, drivetrain dampers are
elastomeric bearings. The real problem is to find the size and type you want
with the hardness you need.
I have designed machines that needed some and bought them in batches of 100
from a Dutch company that makes them for the auto industry, but to get one
or two off, you will have to know the application.

Slatts