[Rhodes22-list] Sealant Question

[Todd Tavares]

Brad,

Didn't you said your bird was in the middle of an annual?  Did the IA
write up the leak and if you sealed it yourself, would he sign off on
it?  I have externally sealed cast gearboxes on elevator machines using
regular blue RTV from the auto store with great sucess.  Are you sure it
is leaking at the caase halves and not from the shaft seal?

Todd T.

  ----- Original Message -----
  From: "Brad Haslett"
  To: "The Rhodes 22 mail list"
  Subject: Re: [Rhodes22-list] Sealant Question
  Date: Sun, 11 Nov 2007 21:06:08 -0600


  JB,

  Whatever I use needs to be removable. The core value of the case is
  around
  $1700 so if I essentially "glue" the two halves together, the only
  choice at
  rebuild would be to crank up the $$ machine, $4700 plus core. There
  is also
  a question of legality. External application of an RTV type product
  would
  fall under "acceptable methods". I'm hoping someone on the list has a
  similar industrial situation and corresponding product. Consumer
  strength
  RTV Blue may be the best out there. It won't cost but $7 to find out
  and no
  damage will have been done.

  Brad

  On Nov 11, 2007 8:25 PM, Just bent wrote:

  >
  >
  > I use this product alot. I'm not sure if it fits your need but it
  might be
  > worth more research.
  >
  > Jbulfer
  > "Just bent"
  >
  >
  >
  >
  http://www.neverseezproducts.com/labmetal.htm?gclid=COzjurGf1o8CFRpIYAodZndaGg
  >
  >
  > Brad Haslett-2 wrote:
  > >
  > > Dear Wizards of Rhodes,
  > >
  > > Here's the deal. The landing gear actuator on the Bo is leaking
  at the
  > > case
  > > halves. This is a simple gearbox about the size of two pie pans
  bolted
  > > together and doesn't with internal pressure. The two halves are
  sealed
  > > with
  > > a standard gasket. Removing the gearbox is a major undertaking
  but not
  > > impossible. Repairing it in the field (splitting the case) is not
  > > recommended. Rebuilt ones are on sale for $4700. A company in
  > California
  > > will split the case and reseal it for a mere $895. Obviously,
  there is
  > a
  > > strong incentive to find an alternative cure. Adding oil is not
  that big
  > > an
  > > issue but I've spent a whole lot of time cleaning the interior
  belly of
  > > the
  > > beast and don't want to have to do this continually.
  > >
  > > My research of the archives of the ABS magazine uncovered a story
  from
  > an
  > > owner in 1996 with the same problem who solved it by cleaning the
  case
  > > joint
  > > thoroughly and coating it with RTV blue without removing the unit
  and
  > had
  > > good results. Here's the question. I haven't been in the market
  for
  > > sealants for years - is there a newer and BETTER product out
  there now
  > > than
  > > RTV Blue? Remember, this will go in the outside of a magnesium
  case and
  > > will be sealing against basic gear oil (only 5 times as expensive
  as
  > gear
  > > oil because it says airplane on the bottle).
  > >
  > > Brad
  > > __________________________________________________
  > > Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
  > >
  > >
  >
  > --
  > View this message in context:
  > http://www.nabble.com/Sealant-Question-tf4787819.html#a13698803
  > Sent from the Rhodes 22 mailing list archive at Nabble.com.
  >
  > __________________________________________________
  > Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
  >
  __________________________________________________
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