----- Original Message -----
From: Kevin Pilcher
Subject: Re: Tri-gear bungee
Hi William,
1 The lenght of the bungee should be 26 ins & 28 ins. I thought
I put a note to say that at the start of my E back to you, if not sorry mate.
there was a typo error in the original
2 engineering supplies will get them for you.
3 Yes the 1.5 dia tube
Regards
Kevin
----- Original Message -----
From: William Harrison
To: 'K.Pilcher'
Sent: Thursday, June 09, 2005 10:48 AM
Subject: RE: Tri-gear bungee
Kevin
That is really brilliant, thank you. A couple of quick questions:
Where can I get suitable rope clamps from?
Am I right in understanding that the top tube you are using is the approx 2
inch
diameter tube shown in the manual, not the smaller tube right up next to the
top of the firewall?
From a quick back of the envelope calculation your 16 and 18 inch lengths get
stretched by much more than the book figure of 175%. Am I right? How close do
the loops get to their elastic limit?
It sounds as though the force need to pull the loop down and hook it over the
bar is a reasonable one man/no hernia operation. Is that right?
Anyway, thanks once again for your help.
Best wishes
Willie
-----Original Message-----
From: K.Pilcher [mailto:kpeng@waverider.co.uk]
Sent: 08 January 2004 21:00
To: europa-list@matronics.com
Subject: Tri-gear bungee
Hi All,
Having run this past the Europa club tri gear mod rep Ian Rickard,
it is his opinion that this is what's called an "Un mod" so does not need PFA
mod approval. The bungee fitting and re-tightening on the tri-gear (I have a
tri classic G-okev ) could possibly be described as a "hernia inducing
procedure"
So in an effort to make the job simpler without having to remove cowls, exhaust,
heat shield, and do away with bungee knots this is what I have done. Cut
4 off lengths of bungee (Europa supplied) 16 inches long and 1off 18 inches.
Form each of them into a ring with 2 inches of overlap then fit an 8mm diameter
wire rope clamp leaving 1 inch sticking out either side of the U- bolt and
be sure to tighten enough to stop slippage. Cut the excess thread off with a
hacksaw then gently dome the ends to ensure the nuts never comes off and remove
any burrs. To determine the lengths of bungee required I used a test jig made
up of my original nose gear, a nose gear mounting frame and a fabricated base
plate and sides to hold them all together in position. I then inverted it and
loaded 350lb on top where the shimmy damper sits
Now to the fitting.
At this point you need
a 1/2 inch internal diameter hook on one end and a tee handle on the other end
of a 1/4 inch dia bar about 10 inches long. I used 1/4 dia threaded bar then
after creating the hook filed it smooth. To gain more access and remove any load
---From the nose gear frame secure the tail of the Europa to the ground and
support
the front of the plane making it impossible to fall on you.
On page 32-11 of the
manual
regarding safety cable and bungee there is a diagram so I will use it to
explain
On the port side of the Europa hook 1 of the 16 inch bungee bands over
one side of the rear end of the nose gear inside the little end stop plate. With
the rope clamp about 1.1/2 inches above the end stop plate to stop it getting
in the way, feed both sides of the band up and over the large diameter tube
at the back of the nose gear mounting frame creating a loop on top between the
smaller diameter tubes welded to it. Feed your brand new hook tool through the
loop then pull it down and over the rear end of nose gear inside the little
end stop plate placing it next to the first loop. Do the same on the starboard
then repeat the process. Finally fit the 18 inch bungee band in a similar way
but starting it on the port side and end it on the starboard.
No more nodding like an apologetic Chinaman.
Regards
Kevin.
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