"Brian D. Cain" wrote:

Friends, I just built a friend of mine's 13B 4-port turbo motor

using

Tracy's
nifty tension bolt squawk modification (heat-shrink tubing).

Inserting the

tension bolts made for a nice, snug fit.  Adding some silicone RTV

around

everything ought to help out a bit more.

Thanks for the advice, Tracy.  Should hold this engine together

nicely.

B

People store things in their subconscious and then think they
invented something when it surfaces as an idea :-)
Now we have computers and search engines so the first person
that sends it to the internet is the real inventor :-)

Paul Lamar

*******************************************************************

WHOA!!.........It makes no sense using RTV in addition to the SNUG fit

Shrink

tubing.
As per very extensive discussions on the ACRE NL, the captive RTV

develops

tremendous hydraulic pressure while curing which can cause cracks in the
housings.........Isn't this the reason why one should sparsely apply a

bead of

RTV in a coarse spiral pattern to the bolt? ....... Or am I missing

something

here??
                                                       Butch

Not to worry.  The RTV is not captive .  The diameter of the iron housings
(where the shrink tubing goes) is smaller than the rotor housings.  If the
RTV wants to expand, it can go into the rotor housing.  I like (& used) the
idea of applying a bit of RTV to the area around the shrink tubing.

Tracy Crook
tcrook@rotaryaviation.com
www.rotaryaviation.com

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