Re: KR> In-flight Fire

2017-01-29 Thread Randy Smith via KRnet 
Tripacer has fuel in wings.  That was an electrical fire. 95% of in flight 
fires are not survivable whether fuel is in the header or wing. I carry a small 
hellion fire extinguisher up front. I had a DME smoke a couple of weeks ago and 
my wife had the fire extinguisher out before I realized it. She pulled the pin 
before I stopped her. 

On Sunday, January 29, 2017 6:01 PM, Larry Flesner via KRnet 
 wrote:
 

 At 04:21 PM 1/29/2017, you wrote:
>Georgetown, DE, he had an in-flight fire seconds after leaving the runway.
+

That hits close to home having put 500 hours on the old TriPacer I 
had and reaffirms my decision to eliminate a header tank and put all 
fuel in the outboard wing tanks.

I wish your friend a speedy recovery.

Larry Flesner 


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Re: KR> 4-into-1 exhaust system help?

2017-01-28 Thread Randy Smith via KRnet 
When it was time for my exhaust on the KR I Talked to a local muffler shop and 
then loaded it up on a trailer and took it to them.  He said he would be glade 
to do it because it was something different. It only cost me $350 and 
everything fit. It was not stainless and I did have it wrapped and it lasted 
quit a long time.
 

On Saturday, January 28, 2017 8:57 AM, Mark Langford via KRnet 
 wrote:
 

 I gave up trying to find an exhaust system that even vaguely resembles 
what I have on N891JF.  I'm going to have to build another one that 
replicates it, unless I want to remove the engine, completely 
reconfigure the firewall and intake system, etc.  Building a new system, 
as painful as that sounds, is easier than the alternative.

I was going to build it out of 321 stainless until I checked the prices. 
  A 321 U-bend is $94, a 304 U-bend is $40, and a mild steel U-bend is 
$10.  I need 8 U-bends (four are actually J-bends, but same price), just 
to think about getting started, we're talking $800, not to mention 
collector, tailpipe, flanges, etc, if built from 321 stainless.  The 
existing one made it to 600 hours and was mild steel.  I'll have N56ML 
back in the air before I put another 600 hours on this one!

By contrast, my Corvair system was almost reasonable built from 321, 
because it is built so simply using only three U-bends for six 
cylinders.  But it's not a complex 6-into-1 system either, just a pair 
of simple 3-into-1 pipes.

I have everything I need to start on it, and that's what I'm doing all 
weekend, and probably next weekend as well.  I built two mockup engines, 
one with the old exhaust to measure distances and angles from, and the 
other as the fixture to build the new system onto. We'll see how it goes.

One thing I learned along the way is that Great Plains has no exhaust 
systems built, but they do have fixtures, so they are "to order" with a 
30 day lead time.  The configurations are shown on their website at
http://greatplainsas.com/scexhaust.html , none of which are similar to 
mine.  Also, gauge size is not mentioned on their website, but they are 
18g (.049"), rather than the 16g (.065")like the original exhaust 
system, so I had to get all materials elsewhere.  I did buy flanges from 
them, but am not enamored with them as the mounting holes are huge 
compared to the 8mm studs, so I'll have to carefully center the flanges 
to the ports before I start welding tubes to them.

Mark Langford
m...@n56ml.com
http://www.n56ml.com


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