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  #1  
Old 06-20-2020, 05:18 PM
Pilot8 Pilot8 is offline
 
Join Date: Sep 2018
Location: California
Posts: 107
Default RV8 throttle travel shrinking

A new throttle cable from Van's has 2 1/8" travel- over time the travel will decrease by 3/8" on my IO360-M1B RV8. The throttle cable is firesleeved from the fuel servo end to the engine mount. Aluminum fiberglass tape wraps the firesleeve, and exhaust heat shields protect the cable at the crossover spots. The cable travel doesn't get any shorter after 3/8 is lost- at 50 hours, 1/4" of travel is gone. It's been repeatable with two cables. Anybody else seen this issue? 3/8" is a lot of horsepower!

Thanks!

Last edited by Pilot8 : 06-20-2020 at 05:22 PM.
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  #2  
Old 06-20-2020, 05:36 PM
ILikePike ILikePike is offline
 
Join Date: Jan 2011
Location: Eatonton, GA
Posts: 216
Default

Same setup. Start with plenty of free play. Use a shorter throttle arm if you have to for full travel. I drilled a new hole 3/8" in from factory hole. The green cables in the kit were not the best length. Replaced with Cablecraft high temperature cables. T-61", G-48.5", M-51"
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1968 E33C Aerobatic Bonanza
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  #3  
Old 06-20-2020, 05:51 PM
Pilot8 Pilot8 is offline
 
Join Date: Sep 2018
Location: California
Posts: 107
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Where did you buy the cablecraft cables?

Last edited by Pilot8 : 06-20-2020 at 06:12 PM.
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  #4  
Old 06-20-2020, 06:33 PM
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sapeloson sapeloson is offline
 
Join Date: Nov 2009
Location: Jesup, GA
Posts: 193
Default Second on the new hole.........

Quote:
Originally Posted by ILikePike View Post
Same setup. Start with plenty of free play. Use a shorter throttle arm if you have to for full travel. I drilled a new hole 3/8" in from factory hole. The green cables in the kit were not the best length. Replaced with Cablecraft high temperature cables. T-61", G-48.5", M-51"
I thought I had checked everything prior to my DAR inspection. I missed the "full" movement on the throttle arm. When Vic found it he said, "easy fix, drill a new hole"..... I had it moving full travel in just a few minutes.....
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  #5  
Old 06-20-2020, 11:53 PM
scsmith scsmith is offline
 
Join Date: Jan 2008
Location: Ashland, OR
Posts: 2,973
Default McFarlane custom cables!

My recommendation is to spend the extra money and get custom McFarlane cables. you will not regret it ever.
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Aeronautical Engineer
RV-8 N825RV
IO-360 A1A
WW 200RV
"The Magic Carpet" Flying since Sept. 2009
Hobbs 700
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LS6-15/18W sailplane SOLD
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  #6  
Old 06-21-2020, 12:56 AM
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jliltd jliltd is offline
 
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Location: Rancho San Lorenzo
Posts: 1,215
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McFarlane really is the best. And is priced accordingly. I just installed one of their vernier assist mixture controls in my RV-3B and it is the bomb. Very high quality.
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  #7  
Old 06-21-2020, 08:01 AM
Pilot8 Pilot8 is offline
 
Join Date: Sep 2018
Location: California
Posts: 107
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Great tip on the McFarlane cables, thanks guys!
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