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  #11  
Old 10-10-2019, 08:23 PM
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engineerofsorts engineerofsorts is offline
 
Join Date: Mar 2009
Location: Austin, Texas
Posts: 306
Default Well, I think I’m crying wolf

Looking at the fuel pump picture, the Assembly S/N is NOT on the cover we threw away—its on the base that the cover covers, so I should be able to see the serial number.
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RV-12 #120332 N73HR
Austin, TX
TangoFlight Mentor
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  #12  
Old 10-10-2019, 08:33 PM
Bob Y Bob Y is offline
 
Join Date: Jul 2017
Location: Piedmont, SC
Posts: 133
Default

When you get the chance to look at the pumps you’ll see both the main and aux pumps carry the same part and S/N as the assembly, leading me to believe the entire assembly is the only way one can get them. I’d be happy if someone could prove that assumption wrong as it will be a more economical solution.
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  #13  
Old 10-11-2019, 07:33 AM
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rolick22 rolick22 is offline
 
Join Date: Oct 2013
Location: Powell, OH
Posts: 227
Default

Hope this photo helps a bit for builders that are not sure where the S/N are and what they look like. These are mine before install. Lucky for me my S/N are not in the I'm screwed range.

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David Rohrlick
PPSEL, A&P
RV-12iS Completed
Airworthiness signed off by the FAA 1/23/2020
First Flight on 3/14/2020
Phase I Finished on 5/7/2020

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N112DR
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Last edited by rolick22 : 10-11-2019 at 07:44 AM.
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  #14  
Old 10-12-2019, 09:28 AM
Flynfrfun Flynfrfun is offline
 
Join Date: Oct 2016
Location: Bonney Lake, WA
Posts: 46
Default Curious

...if all those connections need to be changed out with the rest of the rubber at 5yr intervals?
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  #15  
Old 10-13-2019, 09:03 AM
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rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 5,603
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This looks like a real dog's breakfast. That's the best Rotax could do?
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Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, SDS EFI, Marcotte M-300, IVO, Shorai- RV6A C-GVZX flying from CYBW since 2003- 439.3 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
http://sdsefi.com/cpi2.htm


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  #16  
Old 03-23-2020, 11:28 AM
todehnal todehnal is offline
 
Join Date: Jan 2005
Location: Kentucky Lakes area in KY
Posts: 947
Default

[quote=RV12JT;1379096]I was on the fence ordering my Sling 2, as to which engine I wanted. TAF convinced me that maybe I’d want the 912 ULS, at the time, rather than the iS. All due to the VIRB ration issues the iS was still exhibiting. So far, I’ve only had one recent SB, for carb circlip replacement, less than an hour job. On the other hand, the iS motors have had several SB,s, especially the 915i#.[/QUOTEt]ake the

Hey John, did you remove the carb to replace the circlip?? I was just looking at my engine and it looks like it would be an easy job if you could just take off the chamber top to access the needle to replace the clip, instead of having to remove the carbs first. Or, am I missing something.

Thanks..............Tom
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2013- RV12, Kit #119. N123M First flight Nov21. It's a keeper!
1998- RV-9 tail kit, built and sold
1989- RV-6 tail kit, built and sold
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  #17  
Old 03-23-2020, 01:06 PM
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Piper J3 Piper J3 is offline
 
Join Date: Nov 2014
Location: Hinckley, Ohio
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[quote=todehnal;1416731]
Quote:
Originally Posted by RV12JT View Post
I was on the fence ordering my Sling 2, as to which engine I wanted. TAF convinced me that maybe I’d want the 912 ULS, at the time, rather than the iS. All due to the VIRB ration issues the iS was still exhibiting. So far, I’ve only had one recent SB, for carb circlip replacement, less than an hour job. On the other hand, the iS motors have had several SB,s, especially the 915i#.[/QUOTEt]ake the

Hey John, did you remove the carb to replace the circlip?? I was just looking at my engine and it looks like it would be an easy job if you could just take off the chamber top to access the needle to replace the clip, instead of having to remove the carbs first. Or, am I missing something.

Thanks..............Tom
Neither carb must be removed from the engine for circlip replacement. Simply remove top cap and slide. Use high-grade slotted screw driver that fits central screw retainer. If thread Loctite doesn't loosen use heat iron on top of screw. Heat loosens Loctite...
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Jim Stricker
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 537

LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
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  #18  
Old 03-23-2020, 05:38 PM
NinerBikes NinerBikes is offline
 
Join Date: Dec 2018
Location: Granada Hills
Posts: 499
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[quote=Piper J3;1416771]
Quote:
Originally Posted by todehnal View Post

Neither carb must be removed from the engine for circlip replacement. Simply remove top cap and slide. Use high-grade slotted screw driver that fits central screw retainer. If thread Loctite doesn't loosen use heat iron on top of screw. Heat loosens Loctite...
Do you need to resynch both carburetors after performing this update?
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  #19  
Old 03-23-2020, 05:44 PM
RV12JT RV12JT is offline
 
Join Date: Jul 2017
Location: Keystone State
Posts: 120
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[quote=todehnal;1416731]
Quote:
Originally Posted by RV12JT View Post
I was on the fence ordering my Sling 2, as to which engine I wanted. TAF convinced me that maybe I’d want the 912 ULS, at the time, rather than the iS. All due to the VIRB ration issues the iS was still exhibiting. So far, I’ve only had one recent SB, for carb circlip replacement, less than an hour job. On the other hand, the iS motors have had several SB,s, especially the 915i#.[/QUOTEt]ake the

Hey John, did you remove the carb to replace the circlip?? I was just looking at my engine and it looks like it would be an easy job if you could just take off the chamber top to access the needle to replace the clip, instead of having to remove the carbs first. Or, am I missing something.

Thanks..............Tom
Hi Tom, no removal, just what a piper J3 said. I had Midwest Sky Sports do mine. We found both original CirClips loose, one worse than the other. No carb sync either.
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  #20  
Old 03-23-2020, 06:11 PM
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Piper J3 Piper J3 is offline
 
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Location: Hinckley, Ohio
Posts: 1,811
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[quote=RV12JT;1416848]
Quote:
Originally Posted by todehnal View Post
I had Midwest Sky Sports do mine. We found both original CirClips loose, one worse than the other. No carb sync either.
The circlip is not really loose – it is pinched by the screw in the slide from above. The main needle is designed to float which gives the appearance that the circlip is loose. The needle needs to float so it centers itself in the main jet and doesn’t rub on the jet which would cause wear and allow a rich mixture. It’s interesting… the needle centers itself with the ~5 GPH flow of gasoline coming vertically up thru the main jet.
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Jim Stricker
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 537

LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
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