Air filters

[Fletcher, Richard]

I used a faucet screen as a filter on my OS 140 back in 1998. Any hardware
store would have a variety of sizes, they work very well at keeping large
stuff, like grass out of the engine. 
 
I also used a hopper tank in that plane, a Steve Stricker Excalibur. It was
a 2 oz tank and I thought it improved performance as it eliminated problems
with fuel foaming and sucking air bubbles. I also used a micro servo for in
flight mixture control. In fact that setup was flawless except for bearing
changes required every 125 flights. 
 
 
 
Rich
 
 
 

-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org] On
Behalf Of Richard Strickland
Sent: Friday, August 13, 2004 12:06 PM
To: discussion at nsrca.org
Subject: Re: Air filters


I found and called them.  He has no immediate plans for making larger ones.
I may have an old one laying  around--might be worth some experimenting by
opening the disk hole and trying different media.  All I really want to do
is keep the big crap out of it.
       RS

----- Original Message ----- 
From: Rcmaster199 at aol.com <mailto:Rcmaster199 at aol.com>  
To: discussion at nsrca.org <mailto:discussion at nsrca.org>  
Sent: Thursday, August 12, 2004 7:34 PM
Subject: Re: Air filters

Richard, you may be thinking of the Bru-Line filters. My local hobby shop
still carries these and they are very inexpensive. The sponge element is
better as an air filter/noise dampener than the 60 mesh screen that the
typical Tettra or similar filters use. They are not as pretty as the
aluminum housed "filters" but they are more effective overall for our needs
 
MattK

From:  <mailto:richard.s at allied-callaway.com> Richard Strickland 
To:  <mailto:discussion at nsrca.org> NSRCA 
Sent: Thursday, August 12, 2004 10:37 AM 
Subject: Air filters 

Anyone, 
  
When we first started trying to quiet things down, one of the areas we
looked at was intake noise.  We used to use a stretch on filter housing with
small filter disks that helped the noise problems with the added benefit of
keeping crap out of the engine--gee, what a concept.  Are there any such
animals available now?  We fly off an old asphalt runway and there is the
possibility something significant was sucked into a brand new 170 and
destroyed the piston, sleeve, ring and bearing.  First time for everything,
I guess.  The 60 sized ones did not seem to affect performance. 
  
Thanks, 
  
Richard 

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