Message

As I recall, the black RTV = silicone is good to about 400F, and the red stuff up to about 500 = F.

-----Original = Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Terry L Schubert
Sent: Thursday, March 25, = 2004 6:05 AM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = cooling duct seal?

A lighter weight less messy method is to = impregnate BID with RTV. Buy it in caulking tubes for less cost and easier = handling.

Lay out the size and shape piece you need on = Saran Wrap. squeegee on 1/8" RTV and lay down the ply of BID. = Add some RTV on top and cover with another piece of Saran. Get = something round and hard like a deep well socket or rolling pin and work the RTV = into the BID.

Peel off one side of the Saran and apply the = RTV/BID RTV sandwich to the desired spot. It will cure in about 24 hours = IF you remove one side of the Saran. It has to have air to = cure.

Have fun. It is great material but = doesn't hold well under AV-Gas soaking.!

Terry Schubert
Central States Association
Newsletter Editor

On Wed, 24 Mar 2004 20:03:39 -0800 = "Marko Bewersdorff" <fly@bewersdorff.com> writes:

If you = want to get creative, fiberglass mat saturated with RTV makes quite a flexible - in = all aspects of the term - sealant. I've used it on oddball shaped gaps, = others use it successfully as baffling directly on their Lycoming cylinders. You = can put some duct tape where on the cowling inlet where you don't want the stuff = to stick and perhaps build it up stiff enough to stay put or set up a = removable frame adhering to the glass-RTV that clips/bolts etc to the = cowl.

Marko

=
-----Original Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Russell Duffy
Sent: Wednesday, March = 24, 2004 7:11 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] = cooling duct seal?

Greetings,
=

I did the first test fit of = my cooling ducts, and there's hope for them. I still haven't decided = exactly what I'm going to do to seal the front of the duct to the cowl = inlet. There's only about 1/8" gap at most, and I'm thinking that it will probably work fine without any additional seal, however, I'll probably = try to put some sort of foam strip to get some sort of a = seal.

I looked through all the = pics I have, and can't find a picture that shows the front of anyone's = duct. How are you guys sealing these to the cowls? = Pictures???

Cheers,

Rusty