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  #11  
Old 04-29-2018, 08:44 PM
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Steve Melton Steve Melton is offline
 
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Quote:
Originally Posted by RV6_flyer View Post
IF the plugs were in my hangar, I would use a spark plug erosion gauge to see if they are still in mechanical spec as well as do a resistance check.

purchased one of these. thx, I was not aware of them.
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RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 800+ for all

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  #12  
Old 09-10-2018, 03:15 PM
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Steve Melton Steve Melton is offline
 
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Default 700 hr spark plugs

replaced all but one of them. 700 hrs was running fine but time to change. one had been dropped and replaced earlier, #3 down.

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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 800+ for all

Simplicity is the art in design.
My Artwork is freely given and published and cannot be patented.
www.rvplasticparts.com

Last edited by Steve Melton : 09-10-2018 at 03:18 PM.
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  #13  
Old 09-10-2018, 03:18 PM
Robb Robb is offline
 
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I have 1200 hrs on fine wires wouldn't run anything else with magneto ignition
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  #14  
Old 09-10-2018, 09:38 PM
Kellym Kellym is offline
 
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Quote:
Originally Posted by Robb View Post
I have 1200 hrs on fine wires wouldn't run anything else with magneto ignition
Quite frankly, I have run fine wires, and have had more trouble with them, at least in the Champion brand than with massives. Most eventually failed resistance test badly, going over 100K ohms. One recently removed failed in flight test, while okay on resistance and appearance.
Usually have trouble with intermittent misfire with older fine wires.
The other issue is that they are fragile to adjust gap, and waste a lot of money if one is dropped. To compete economically with massives you have to manage a full 2000 hours on a fine wire.
GAMI issued a service bulletin strongly recommending against fine wires of the C brand in a turbo normalized or turbocharged engine, where electrode ceramic failure was common.
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  #15  
Old 09-11-2018, 02:43 PM
TimO TimO is offline
 
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Kelly,
I've heard that Champions fine wire plugs are more of a "stay away" product. I've been running fine wires in my -10 for well over 1,000 hours with no issues, and nearing 300 on the -14. But, mine were Autolite/Tempest. I treat them very well when I pull them though because as you mention, dropping one is an expensive lesson.
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  #16  
Old 09-11-2018, 07:14 PM
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Steve Melton Steve Melton is offline
 
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what is this "pull them thru method"? I told myself I would never drop one, but I did.
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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 800+ for all

Simplicity is the art in design.
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  #17  
Old 09-11-2018, 11:38 PM
BobTurner BobTurner is offline
 
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Default There?s no ?r?

Quote:
Originally Posted by Steve Melton View Post
what is this "pull them thru method"? I told myself I would never drop one, but I did.
?...when I pull them, though, ...?
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  #18  
Old 09-12-2018, 04:31 AM
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N804RV N804RV is offline
 
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I’ve been annealing spark plug washers with a propane torch and some tap water in my last empty Starbucks coffee cup for awhile now. Just torch ‘em till they glow orange. Then quench in water and burnish with scotchbrite when cooled.
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  #19  
Old 09-12-2018, 04:45 AM
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snopercod snopercod is offline
 
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I guess I'm getting lazy in my old age because for 30c each, I just buy new ones (I have a box of 100).
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  #20  
Old 09-13-2018, 05:06 PM
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Steve Melton Steve Melton is offline
 
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Quote:
Originally Posted by snopercod View Post
I guess I'm getting lazy in my old age because for 30c each, I just buy new ones (I have a box of 100).
that equals 3000c.
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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 800+ for all

Simplicity is the art in design.
My Artwork is freely given and published and cannot be patented.
www.rvplasticparts.com
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