Tailcone Tracking - Rebel TS attach bolt
Posted: Fri Feb 17, 2012 10:36 pm
Ron, I have copied to the list for others that were following this tail
spring mounting bolt problem that we have found, with the older style of
multi-strapping the Fus-49 bulkhead for the attach bolt.
Sounds like we caught yours just in time and mine is close to follow suit!
MAM has no retrofit instructions that I know of and you're right, going to
be a nightmare working through the lightening holes in Fus-31. I haven't had
any time to get onto mine (or when I do it's been -25C) and/or to figure out
a plan of attack, but better get my butt in gear if I want to enjoy some
winter flying before mine proceeds to your stage of destruction. Removing
the pie shaped FUS-31 for access means likely removing the rudder and
dismantling all the control assembly in the back, after loosening the
elevator cables, but may be the only real option. I have a hand riveter with
a swivel head that allows straight on riveting but I'm not sure if I could
squeeze it hard enough to break the 3/16 rivet mandrels working though that
4" diameter hole (maybe could be done from the inside the tailcone with both
hands through the rear Fus bulkhead). Maybe you have an idea with the small
hole in the bottom of Fus-30, but placement would be crucial to the shape of
your rivet gun/squeezer and like you say when you are done you need to
restore all the original strength to the area. I would try to attack from
all other avenues first.
Sorry, no straight answers for this one at this stage! I changed George
Christie's to the newer style attach, but I built a whole new FUS-30
assembly when I did it so wasn't really a retro fit.
Will post some pics of your skis later.
Regards,
Wayne
----- Original Message -----
From: "R. A. Hamson" <ronfran@ca.inter.net>
To: "Wayne G. O'Shea" <oifa@irishfield.on.ca>
Sent: Saturday, December 07, 2002 2:48 PM
Subject: Tailcone Tracking
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spring mounting bolt problem that we have found, with the older style of
multi-strapping the Fus-49 bulkhead for the attach bolt.
Sounds like we caught yours just in time and mine is close to follow suit!
MAM has no retrofit instructions that I know of and you're right, going to
be a nightmare working through the lightening holes in Fus-31. I haven't had
any time to get onto mine (or when I do it's been -25C) and/or to figure out
a plan of attack, but better get my butt in gear if I want to enjoy some
winter flying before mine proceeds to your stage of destruction. Removing
the pie shaped FUS-31 for access means likely removing the rudder and
dismantling all the control assembly in the back, after loosening the
elevator cables, but may be the only real option. I have a hand riveter with
a swivel head that allows straight on riveting but I'm not sure if I could
squeeze it hard enough to break the 3/16 rivet mandrels working though that
4" diameter hole (maybe could be done from the inside the tailcone with both
hands through the rear Fus bulkhead). Maybe you have an idea with the small
hole in the bottom of Fus-30, but placement would be crucial to the shape of
your rivet gun/squeezer and like you say when you are done you need to
restore all the original strength to the area. I would try to attack from
all other avenues first.
Sorry, no straight answers for this one at this stage! I changed George
Christie's to the newer style attach, but I built a whole new FUS-30
assembly when I did it so wasn't really a retro fit.
Will post some pics of your skis later.
Regards,
Wayne
----- Original Message -----
From: "R. A. Hamson" <ronfran@ca.inter.net>
To: "Wayne G. O'Shea" <oifa@irishfield.on.ca>
Sent: Saturday, December 07, 2002 2:48 PM
Subject: Tailcone Tracking
As you suggested, I checked the bulkhead - bottom tab broken right off.
Not only that but the internal Tailskid doubler straps were all broken
either side of the bolt hole.As a result it looks like the best option
is to do the FUS-84/FUS-88 installation plus the skin doubler. I don't
know if Murphy has a retrofit installation procedure as to work through
the FUS-31 holes, is going to be very difficult. Might be able to get
the part drilled but riveting will be difficult. What do you think about
cutting out a small rectangle, wide enough to work through, in the
center of the bottom tailcone skin? Once the installation is complete,
the hole would be flush filled and then one or two .032 tailcone skin
doublers installed.
Cold working in the hanger because of a strong SW wind. Temperature was
about -3C. Was able to finish my tailcone skin doubler template plus
de-rivet the straps, etc.
Go ahead and post the pictures of the skis, etc. I tried to reply
through the Rebel Forum but dcsol.com didn't like my address.
Ron
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