Graham,
Again: "we are two peoples divided by a common language."
And again, I seem to be bit in the nether areas as a result of instructions
written
such that multiple interpretations can be made. To quote the Europa Build
Manual --
Chapter 29M: "Bungee cord
To assist the pilot in retracting the landing gear into the centre tunnel a
bungee
cord is used. The
bungee cord is looped under an anchor tube attached to the swinging arm and over
the top horizontal
member of the landing gear mounting frame.
Tie one end of the bungee cord to the top horizontal member of the landing gear
mounting frame with
two half hitch knots and, using three plastic cable ties, secure the short end
below the knots to the rest
of the bungee. See figure 6. Thread the cord down under the anchor tube and back
up and over the
upper member of the mounting frame. Repeat this until all the bungee has been
used."
RLB commentary, this results in 6 loops around the frame.
Returning to the Europa Build Manual --
Chapter 29M: "Setting bungee tension
With the retraction lever in its down gate tension the bungee, adjusting each
strand
so they all have
equal tension, until the landing gear, complete with wheel assembly and with
wings
installed, can be
easily retracted and extended. Its important when making these adjustments that
the wings are
rigged so that the weight of the flaps is taken into consideration. In flight
the
flaps will not aid
retraction of the landing gear. Final adjustments can be made to ease retraction
or extension as
preferred. The flaps will not help or hinder retraction or extension when in
flight.
See figure 7.
To secure the bungee at the required tension tie the remaining end, in the same
manner as the other
end, to the top member of the landing gear mounting frame. Cut or tie off any
excess
bungee. "
RLB commentary continues, nowhere in the section is there any instruction to
continue
to wrap the bungee as you tighten. It just says to tighten and cut off
the excess.
I'm not flaming you Graham, please don't read this that way. And I'm not saying
that Graham's continued wrapping is incorrect. It may very well be correct.
I'm just pointing out a serious issue with the build manual if his method is
correct.
Unfortunately, this is not the first instance of build instructions which can be
left open to divergent interpretations. And somehow, I seem to end up on the
wrong end of said interpretation most times.
Europa-Aircraft Folks: PLEASE give your build manual a complete top to bottom,
front to back going over. There needs to be considerably more detail in much
of the manual. My nether regions have become much too tender to absorb
continued
chewing.
Check six,
Bob Borger
SOMEDAY, not sure just when, I WILL get my thrice completed but still not quite
yet complete beastie into the air.
On Wednesday, January 21, 2009, at 01:07PM, "Graham Singleton"
<grahamsingleton@btinternet.com>
wrote:
>
>Fred Klein wrote:
>> When I initially snugged the bungee, getting the 6 loops + the "start"
>> loop and the "finish" loop as per the diagram in the manual, I found
>> that I used just about the entire length of bungee. As I progressively
>> tightened the bungee, I found that I've ended up with about 6 feet of
>> extra cord, and have yet to achieve the "one-finger" retraction...and
>> man, those bungees are REALLY tight! Or at least they seem so.
>>
>> With no other experience, how does this compare w/ that of
>> others?...jus curious.
>>
>> Fred
>> A194
>Fred
>use ALL the bungee and tie it off where you can reach it with the engine in.
>Graham
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