Mailing List lml@lancaironline.net Message #42836
From: Bill Wade <dhc1@gwi.net>
Sender: <marv@lancaironline.net>
Subject: Re: [LML] Re: Throttle/ Prop / Mix Cable Placement
Date: Thu, 28 Jun 2007 19:22:27 -0400
To: <lml@lancaironline.net>
  RC hobby shops sell flexible plastic pushrods for model control systems. Multiple lengths can be joined together using the threaded rods included in the package, or just tape the inner and outer portions. I've used them to determine control cable routing and to find the exact lengths needed. The outer sections can also be used as a temporary conduit to snake wire into difficult areas.
  One thing I've found is that cables vary according to barrel length. I planned for Aircraft Spruce cables on a panel renovation but ended up using some nice Beech cables with barrels that were an inch longer. The result was a sharper bend than I would've liked that increased friction in the cable.
  If you've decided on your avionics and panel layout, blocks of styrofoam hot glued to the back of the panel can be used to simulate the components and the space required for their connectors. When the time comes I may make a plexiglass mockup that would fit in place so I can easily see just what is going on back there. -Bill Wade
----- Original Message -----
Sent: Wednesday, June 27, 2007 11:50 PM
Subject: [LML] Re: Throttle/ Prop / Mix Cable Placement

Rick,

 

I located my control cable penetrations using the Lancair provided firewall drawing. You should have one in your package. You don’t want to get too creative or the cable lengths could be wrong (assuming your using the Lancair FWF cable set) or the bends might to too sharp.  Good Luck.

 

Paul Bricker

N63PB

7.1 hrs

 


From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of rtitsworth
Sent: Tuesday, June 26, 2007 5:40 PM
To: lml@lancaironline.net
Subject: [LML] Throttle/ Prop / Mix Cable Placement

 

I’m (almost) ready to drill the firewall holes for the Throttle/Prop/Mixture cables on my ES (basically the same F/W as a IV).

 

1. I’ve considered the placement of other items on the firewall and the location of the major hoses near the firewall (fuel lines etc).

2. I’m also cognizant of keeping the cables away from the rudder pedal movement area on the inside.

3. Obviously sharp bends (and/or twists) are to be avoided.

 

However, I’d like to be sure I’m not ignoring anything else important (I don’t know what I don’t know).  I’ve looked through lots of pictures of other’s planes which I have, and they all seem to be a little different. 

 

Is there any reason not to get the cables as close as possible to the correct placement/orientation before the firewall (and then relatively straight back to the panel)?  This would seem to simplify the spaghetti behind the panel – perhaps at the expense of the spaghetti fwd of the firewall.  It seems one disadvantage of this approach is that there isn’t any service loop behind the panel without loosening the cables at the firewall grommets.  Perhaps this is not important if the cables/controls are on their own sub-panel.

 

Any other thoughts/insights/lessons learned???

 

Rick Titsworth

 

 

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