REFLECTOR: Low CHTs

[Rene Dugas]

I had thought about a cable similar to our prop control cable that is
adjustable with a button to push in mounted on the front of my overhead
vent duct that was tucked up in a corner of the duct exiting high in the
rear of the duct going through the firewall attached to a bellcrank that
would partially close a butterfly valve in each NACA while still
attached to the firewall.  The two butterfly baffles would be connected
in the midline with the cable movements changing both.  Another
installation could be a flapper plate hinged in the front of the NACA's
as they pass through the firewall so upward pressure would partially
close the NACA passage.  Volkswagons had temperature sensitive bellows
with a shaft that I considered using as cowl flaps but never did since
heat is not my problem.  One of these old bellows could possibly be
mounted so they automatically open and close the baffle partially
without oversight if properly adjusted.  I prefer the cable exercise.

FWIW

Rene'

 

-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Scott Derrick
Sent: Thursday, January 18, 2007 9:57 AM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Low CHTs

 

That looks great.  Wonder how he controls them?

Scott

Darrell & Nora Kufalk wrote: 

I took this picture at Sun-N-Fun back in 2004.  Looks like a good
design.
Aircraft number was N98CU which is currently registered to a Charles B.
Ufkes of Ocala, Florida.
 
Anybody know him?
 
Darrell
 
 
 
 
 
-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of John Dibble
Sent: Wednesday, January 17, 2007 11:50 AM
To: Velocity Aircraft Owners and Builders list
Subject: REFLECTOR: Low CHTs
 
This time of year my CHTs are low and my oil temp is also, making it
difficult to heat
the cabin.  I'm thinking of putting butterfly valves in the engine
cooling
inlets,
similar to what is in my engine intake air for carbureator heat.  Rather
than run
cables, I'm thinking of using a bi-metallic spring, like is used for
automatic chokes
on cars to open and close the valves.  Ideally the spring would work off
of
CHT, but I
think this will be to complicated, so I think using OAT would be more
practical.
Any thoughts whether this is a good idea?
 
John
 
_______________________________________________
To change your email address, visit
http://www.tvbf.org/mailman/listinfo/reflector
 
Visit the gallery!  www.tvbf.org/gallery
user:pw = tvbf:jamaicangoose
Check new archives: www.tvbf.org/pipermail
Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
  

 

  _____  

 



 





  _____  



 
_______________________________________________
To change your email address, visit
http://www.tvbf.org/mailman/listinfo/reflector
 
Visit the gallery!  www.tvbf.org/gallery
user:pw = tvbf:jamaicangoose
Check new archives: www.tvbf.org/pipermail
Check old archives: http://www.tvbf.org/archives/velocity/maillist.html





-- 
 
-
    As nightfall does not come at once, neither does oppression. In both
instances, there is a twilight when everything remains seemingly
unchanged. And it is in such twilight that we all must be most aware of
change in the air however slight lest we become unwitting victims of the
darkness.
 
    William O. Douglas, Justice of the U.S. Supreme Court 
 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.tvbf.org/mailman/private/reflector/attachments/20070122/6e0c1e57/attachment.htm 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/jpeg
Size: 32246 bytes
Desc: not available
Url : http://www.tvbf.org/mailman/private/reflector/attachments/20070122/6e0c1e57/attachment-0001.jpe