Hi all you dimona devotees
Im not sure that this message will get to you all but here goes ....
I am currently getting an Ex Thai Dimona into the air for Dave McMillan who
is in Greymouth New Zealand.
It has been subjected to a reasonably corrosive environment while in storage
over here, and it was the machine which Nigel was referring to regarding the
pop rivet heads popping off the aileron hinges (maybe a dodgy Thai repair)
because of corrosion.
However I have found another issue which is really interesting. Inside the
wings, the aileron push rods have 5 bearing sets (the manual says 3) Each
set consists of 3 bearings pointing to the centre of the rod, and are all
mounted in on a bracket which is rivet'd to a plywood bracket (with a hole
in the centre for the tube of course) That ply bracket is then glassed on to
the inside skin with 2 fiberglass "flanges" (hope I have explained that
OK)
The plot then thickens ..... I was concerned that there seemed to be quite
a lot of "play" in the push rods, so cut a 110mm hole above the last
"bearing bracket" close to the aileron bell crank to check the bearing. I
found that all 3 bearings were almost impossible to move. Close inspection
revealed that the bearing "outer" was actually the nylon roller and the
balls of the bearing had pushed dents into the nylon ..... preventing free
rotation.
So ... after all 10 holes were cut, I found all 30 bearings in the same
state.
10 new bearing sets were ordered from Hawkers (Now the Diamond agents over
here) (at great cost) The new bearing sets have stainless brackets and the
bearings are modified .....now have steel outers and a thinner nylon outer
outer. They are REAL smooth.
I have cut a 10mm hole above the bearing and will have to remove the wooden
holder and reglass back in, Nigel thinks a better way would be to drill the
hole (or holes alongside the brackets) ... it u do that bear in mind the
fibreglass flange in the wooden bracket is about 1.5 inches wide (3 inches
for both) but some brackets seemed only to have one flange.
Best regards
Ian Williams
From: Nigel Baker [mailto:[email protected]]
Sent: Thursday, 13 August 2009 11:11 p.m.
To: [email protected]
Subject: [DOG mailing list] More Re: [DOG mailing list] Morning Glory.
Come to think of it Patch.
There is a List called SOG (Stemme Operators Group)
And us in DOG.
What would a G109 group be.
Of Course GOG.
Oh my GOG I've probably given Russell idea's now.
Nige.
----- Original Message -----
From: Nigel Baker <mailto:[email protected]>
To: [email protected]
Sent: Thursday, August 13, 2009 8:17 PM
Subject: Re: [DOG mailing list] Morning Glory.
Exactly Patch. Otherwise we will have to start sacrificing Gilder Pilots.
Starting with Macca and then Russell White who replied likewise to my mail
but on another list.
Nige.
P.S.
Patch you better keep it quiet you are turning up in a G109 GUM or else
you'll be seen as a turncoat.
This is the "Dimona" Operators Group after all.
----- Original Message -----
From: Patching <mailto:[email protected]>
To: [email protected]
Sent: Thursday, August 13, 2009 7:34 PM
Subject: Re: [DOG mailing list] Morning Glory.
Better not be!
Patch
VH- GUM
----- Original Message -----
From: Ian Mc Phee <mailto:[email protected]>
To: [email protected]
Sent: Thursday, August 13, 2009 6:54 PM
Subject: Re: [DOG mailing list] Morning Glory.
Yep season is over - just beer drinking left for this season IM
2009/8/13 Nigel Baker <[email protected]>
I hope this doesn't mean ones gone already and it's one less we get this
season.
http://www.abc.net.au/news/stories/2009/08/13/2654370.htm
Nige.
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