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  #11  
Old 10-19-2017, 12:25 AM
Art_N412SB Art_N412SB is offline
 
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Location: Gig Harbor
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UH1-H Driver. 162nd AHC Vultures and 18th CAC Green Delta. I was Green Delta one one. RVN 72
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  #12  
Old 10-19-2017, 12:27 AM
Art_N412SB Art_N412SB is offline
 
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I forgot to mention that I was with those units at Can Tho as Well Ric.
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  #13  
Old 10-19-2017, 12:30 AM
sandpiper sandpiper is offline
 
Join Date: Nov 2009
Location: Independence, OR
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Art - Rucker class 69-24. How about you?
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  #14  
Old 10-19-2017, 01:04 AM
crashley crashley is offline
 
Join Date: Jun 2009
Location: hazelwood north vic
Posts: 158
Default idle speed

I would check the throttle levers are returning to their stops
also try removing the filters they may have too much oil changing the air flow

Last edited by crashley : 10-19-2017 at 05:19 AM. Reason: misleading
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  #15  
Old 10-19-2017, 04:52 AM
Fast Eddie B Fast Eddie B is offline
 
Join Date: Dec 2016
Location: Mineral Bluff, GA
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Quote:
Originally Posted by crashley View Post
I would check the throttle cable is returning properly and has a little slack at idle setting.
At idle, the throttle cables are under tension, right?

I think I made the same mistake here and was corrected. My excuse was years with the same basic carbs on motorcycles where the throttle springs pull the lever to idle if a cable breaks. On the ROTAX itís the opposite - if a cable breaks the spring pulls it to full throttle.
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  #16  
Old 10-19-2017, 06:35 AM
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RV6_flyer RV6_flyer is offline
 
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Location: NC25
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How old is the 912?

Just had a 5-year old 912 on a E-LSA at my airport that had same or similar issue. (3,000 RPM idle)

Problem was gaskets in the carbs. One had the cork gasket around the outside of the float broken at the idle mixture jet and there were some O-Rings found were not correctly seated and one O-Ring was broken.

Replacement parts were better quality with a replacement cork gasket now a conventional gasket. Overhaul kit for both carbs was around $150.
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  #17  
Old 10-19-2017, 06:52 AM
John-G John-G is offline
 
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Location: Northeast Ohio
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Art ... you have received good suggestions so far. I would also like to add take a very close look at the throttle return springs attached to the throttle arm ... they have a propensity to break over time.
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  #18  
Old 10-19-2017, 09:16 AM
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Phantom30 Phantom30 is offline
 
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Location: Coeur d'Alene, ID/Casa Grande, AZ
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Quote:
Originally Posted by Art_N412SB View Post
I forgot to mention that I was with those units at Can Tho as Well Ric.
Art....my buddy (Joe Conley, who just bought half interest in my-12) and I both flew chinooks ( I, Innkeepers, he, Hillclimbers) for the first half of our tours; then ran the 307th TOC-Phantom, the second half. We were a little ahead of your time in Country.
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Tho RVN)
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RV-12 Kit#729 "N312RD" is now a full functioning fun machine!! Thanks Van for fulfilling my dream😎
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  #19  
Old 10-19-2017, 09:20 AM
jnmeade jnmeade is offline
 
Join Date: Mar 2013
Location: Iowa
Posts: 128
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It sounds like something common to both carbs. Throttle and cable, etc seem like something to double check.
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  #20  
Old 10-19-2017, 10:37 AM
Art_N412SB Art_N412SB is offline
 
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Location: Gig Harbor
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71-27 at Rucker
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