Michael
The bungee is lighter and, when new and tensioned correctly works well.
Over time it becomes slacker and periodically requires tightening which
is a proverbial pain in the **** once the aircraft is finished. It is
easier if you use the =91rubber band=92 technique with up to 6 separate
loops but even those still need tightening from time to time. The
springs are indeed heavier but make the front end firmer and
(hopefully!) require nil maintenance. When I ordered my springs from
the factory they told me they had orders for about 40 pairs. That should
tell you something about the unpopularity of the job of re-tensioning
the bungees.
Cheers.
Richard Iddon G-RIXS
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Michael
Grass
Sent: 15 August 2006 02:30
Subject: Europa-List: Bungee or springs?
All Mono driver can relax now.
I have a question to all Tri Gear Europa pilots. I opted first not to go
the spring route for the reason of lighter weight and a more distributed
load around the load caring tubes versus a centralized stress point
caused by the small diameter of the spring wire where it touches the
load caring tubes
Now I am not so sure anymore. The manual for the Bungee installation
states to stretch the Bungee to about 175% of its original length or
about 1 inch between the marks. My bungee has the marks exactly a 1/2
inch apart. I stretched all Bungee runs to exactly 1 inch or with other
words to 200% of its original length. Then I did my load test. The
manual states that about 150kg is needed to get the leg of its bump
stop. My installation will give away at about 170kg load sitting on the
shelves (1 human and 1 builder) but no engine or instrument module and
glass installed. No I start to have doubts if that is even enough.
Thinking that I will install a 914 with a CS prop I wonder if this is
enough pretension or should I upgrade to the springs.
I seek now the advise from bungee flyers and the experienced bungee
converted to spring flyer.
Thanks
Michael Grass
A266 TriGear Detroit Michigan
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11/08/2006
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11/08/2006
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