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  #1  
Old 12-06-2019, 03:55 AM
RyanB RyanB is offline
 
Join Date: Sep 2017
Location: South Africa
Posts: 75
Default Engine control cable routing

Hi Everyone

I have a single quadrant for my throttle, mixture and pitch controls. What is the best way to run the cables? Is it through the cheek or just straight through the firewall? What did you do?

Really appreciate the help
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  #2  
Old 12-06-2019, 04:46 AM
Larry DeCamp's Avatar
Larry DeCamp Larry DeCamp is offline
 
Join Date: Apr 2010
Location: Clinton, Indiana
Posts: 992
Default Engine geometry may call for different solutions.

I have an AFP 150 on vertical sump. Many suggestions on VAF called for the cheek approach which seemed workable. BUT, now that all components are actually in place, the best approach for throttle and mixture ( for me) is the firewall between the left rudder assy and mount stiffener pad on the firewall. This gives a nice straight approach to injector levers and simple/robust cable mounting brackets.
The downside to this is the throttle cable must curve over the left rudder area, similar to the approach used on RV3?s. It works fine on my 3.
The AFP 90* elbow concept made cable connection less than ideal, so I went vertical, and your specific hardware is the final arbiter.
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Larry DeCamp
RV-3B flying w/7:1 0320 / carb / Pmags / Catto 3b / digital steam
RV-4 fastback w/ Superior roller 360/AFP/G3X/CPI/Catto3b
Clinton, IN
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  #3  
Old 12-06-2019, 04:50 AM
fixnflyguy fixnflyguy is offline
 
Join Date: Jan 2006
Location: Winston-Salem, N.C.
Posts: 1,210
Default What I did..

I routed mine straight through the frame in front of the quadrant, then they make a big smooth curve slightly upward and over to the center of the tunnel and come out the firewall directly behind the carburetor. I don't have a constant speed, so I cant comment on that routing but I'm sure it could be similar. I don't see a benefit to going through the cheek, but others may comment. Mine are very smooth operating, and no binding. I can't post pictures on here, but be glad to attach some to a PM/Email.
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8A7 / Advance NC
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  #4  
Old 12-06-2019, 06:53 AM
RyanB RyanB is offline
 
Join Date: Sep 2017
Location: South Africa
Posts: 75
Default Routing

Thanks for the advise gents. I am installing an O360
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