My Europa XS/Mono with a Jabiru 3300 with the fuselage level has 42.25
inches from the ground to the center of the prop flange. A 64" diameter
prop then has 10.25 " of clearance with the tire inflated and about 6"
of clearance with the tire flat.
The Jabiru engine must have a higher thrust line giving a bit greater
prop clearance for a greater margin of safety.
Tom Friedland A 079 N96V
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Nigel
Graham
Subject: Re: Europa-List: New Tailwheel, old engine mount???????
<nigel_graham@btclick.com>
The JAR regs were defined to protect the aircraft (and pilot) under
worst-case conditions.
To check this properly on a Monowheel Europa, it will be necessary to
assemble the landing gear without the "rubber block", such that the
weight of the aircraft is borne by the nylon bump-stop. This represents
the maximum deflection possible before structural damage occurs.
The wheel should be replaced minus tyre and tube (worst-case run-flat
condition) and the aircraft gently lowered onto its rims. With the tail
lifted so that the aircraft is horizontal, the prop tip clearance should
be measured.
If, under these conditions, there is any tip clearance at all - it has
passed the test and conforms to the JARs.
This might seem like an unnecessarily long procedure, but will pale into
insignificance when compared to the time and money required to remove
the engine for shock-load testing and replace a broken blade.
Nigel (Graham)
----- Original Message -----
From: "Nigel Charles" <nigelcharles@tiscali.co.uk>
I measured the ground clearance on my Classic with 64" blades and the
same
on an XS. They came out at 11" and 12" respectively. There is likely to
be
slight variation between individual aircraft but this indicates that
either
conforms with JAR's.
Nigel Charles
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