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  #1  
Old 08-31-2015, 06:06 PM
DragonflyAero DragonflyAero is offline
 
Join Date: Jan 2013
Location: Greensboro, NC
Posts: 173
Default Need help with prop control cable

I am not sure what I need to hook up my prop control on my -7. I am using a center quadrant and have a PCU5000X governor. I rotated the governor control so it points up. The control cable exit is toward the left side of the firewall. I tried using ACS A-960 cable with an Aurora bearing end fitted on the 1/4-24 threaded end. The other end of the cable I used a wire grip with 10-32 threads and a clevis to attach to the quadrant arm.

The cable has to make a very tight turn as it exits the firewall on the engine side to bend over the the governor. I thought the solution would be to use a smaller diameter Bowden but all I see listed at ACS is .078 wire.

Can anyone offer advice on how you did this?
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RV-7 Standard Build
http://www.mykitlog.com/users/index....r&project=2226

Last edited by DragonflyAero : 08-31-2015 at 06:15 PM.
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  #2  
Old 08-31-2015, 06:28 PM
BillL BillL is offline
 
Join Date: Sep 2007
Location: Central IL
Posts: 5,515
Default

Quote:
Originally Posted by DragonflyAero View Post
I am not sure what I need to hook up my prop control on my -7. I am using a center quadrant and have a PCU5000X governor. I rotated the governor control so it points up. The control cable exit is toward the left side of the firewall. I tried using ACS A-960 cable with an Aurora bearing end fitted on the 1/4-24 threaded end. The other end of the cable I used a wire grip with 10-32 threads and a clevis to attach to the quadrant arm.

The cable has to make a very tight turn as it exits the firewall on the engine side to bend over the the governor. I thought the solution would be to use a smaller diameter Bowden but all I see listed at ACS is .078 wire.

Can anyone offer advice on how you did this?
I just installed mine this week. I used the standard Vans control cable. It indeed has a seemingly sharp bend, but the operation force does not seem to suffer at all. Be sure you exit the far left hole in the firewall per the plans.

I brought the cable out between the engine mount and installed the cable on the governor out where I could reach it easily. I adjusted for full travel then, before torquing the jamb nut and sheath, mounted the governor to the engine, rechecked the travel then jammed the sheath and rod end nuts.

Knuckle skin intact.
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Bill

RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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  #3  
Old 08-31-2015, 07:08 PM
DragonflyAero DragonflyAero is offline
 
Join Date: Jan 2013
Location: Greensboro, NC
Posts: 173
Default

Thanks Bill. What sort of bracket did you use to secure the cable on the engine side? Do you have a picture you could email me? DragonflyAero1@gmail.com.

Thanks!
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RV-7 Standard Build
http://www.mykitlog.com/users/index....r&project=2226
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