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02-04-2009, 11:00 AM
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Join Date: Sep 2006
Location: Port Orange, FL
Posts: 1,020
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Alfio,
The SB actually requires to replace BOTH the brass and plastic with a foam float! When my original carb was flooded in 4/07, Bart replaced it with another carb. When I looked at the photo of the float during my carb mod, my floats look exactly the same as Steves. They don't look like foam! I think neither of us are compliant with the SB!
__________________
Ted Chang, VAF #681
RV-9A #91048, flying since 8/2006. 2,050 hrs.
2018 Due paid
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02-04-2009, 11:13 AM
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Join Date: Mar 2006
Location: Ottawa, ON
Posts: 650
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Quote:
Originally Posted by tc1234c
The SB actually requires to replace BOTH the brass and plastic with a foam float!
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You are correct, Ted. SB says to replace both types of floats. This where-in lies the beauty of experimental aircraft, in that you can use judgment and assess your own risk.
The issue with the brass float was wear over the extended life of the carburetors. This wear should have been caught at overhaul time, and not have been placed back into service. I believe the affected units were limited in numbers (I recall reading this somewhere but lost track of the reference). In hindsight, the brass floats were much better (low failure rate) than what was used to replace them. With the benefit of that hindsite, and Bart's opinion, I am back with brass floats. Don't know how the new plastic floats will behave over time .... so, better the devil you know. [edit: confirmed that I have new Kelly Aerospace floats now. They are not covered by SB]
For people reading this out there ... I am not a carb expert (by any stretch of the imagination). Contact your engine builder .... or maybe Mahlon can chime in with his opinion.
Edit: Brian C. on VAF thread indicates the the new ones are supposed to be smurf blue http://www.vansairforce.com/communit...d.php?p=265396 More good info on that thread... Incidently, I checked with Aerosport as to what brass float was installed: Kelly Aerospace PN CF666-915
__________________
Alfio
RV-9A Ottawa, Canada
First flight Dec. 18, 2008
> 1,000 hrs tach.
Last edited by Lycosaurus : 02-04-2009 at 12:36 PM.
Reason: Provide SB link from VAF, and float PN
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02-04-2009, 11:40 AM
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Join Date: Sep 2006
Location: Port Orange, FL
Posts: 1,020
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Just searched the old threads. The foam float is SMURF BLUE. May be that Steve and I have. Need to go to the airport and take off the cowl to check the number on the carb. Just keep my fingers closed.
http://www.vansairforce.com/communit...t=32931&page=2
2/4/09: I verified that I have I.C. number 15 on my carburetor. It has new foam floats.
__________________
Ted Chang, VAF #681
RV-9A #91048, flying since 8/2006. 2,050 hrs.
2018 Due paid
Last edited by tc1234c : 02-05-2009 at 03:39 PM.
Reason: new information
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02-04-2009, 12:00 PM
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Join Date: Mar 2006
Location: Ottawa, ON
Posts: 650
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Ted and Steve,
I update my previous post with the following:
Brian C. on VAF thread indicates that the new ones are supposed to be smurf blue http://www.vansairforce.com/communit...d.php?p=265396 More good info on that thread...
__________________
Alfio
RV-9A Ottawa, Canada
First flight Dec. 18, 2008
> 1,000 hrs tach.
Last edited by Lycosaurus : 02-04-2009 at 12:36 PM.
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02-04-2009, 12:14 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Quote:
Originally Posted by Lycosaurus
I believe someone referred to the problem floats as 'smurf blue' which looks like yours, I guess. Seems they soften up even with avgas, as evidenced by other VAF members, and will fill up with fuel .... not good. New plastic floats are supposed to be better, but I just don't know what the compatibility with mogas will be. It may just be fine, but I don't think they would test for it anyway.
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The Smurf Blue float is the latest design and what is recommended by the SB/Volare.
The hollow translucent white plastic ones and the solid foam ones (I think these are black) that are not Smurf Blue are the problem children along with the certain brand of brass ones.
The problem with the brass one is that unless you know for sure what manufacturer made the thing, you have no idea if you should replace it or not.
Last edited by Brantel : 02-04-2009 at 12:18 PM.
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02-04-2009, 12:31 PM
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Join Date: Mar 2006
Location: Ottawa, ON
Posts: 650
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Thanks for chiming in, Brian, and correcting me on the smurf blue floats. I have corrected my previous posts accordingly so my posts don't induce others in error before they get to read yours.
My new float is Kelly Aerspace... for which the SB should not apply.
[edit] ... and here's the SB from Kelly Aerospace, if you happen to have one of their brass floats
http://www.kellyaerospace.com/servic...rass_float.pdf
__________________
Alfio
RV-9A Ottawa, Canada
First flight Dec. 18, 2008
> 1,000 hrs tach.
Last edited by Lycosaurus : 02-05-2009 at 03:05 AM.
Reason: link corrected (removed indent)
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02-04-2009, 12:36 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Quote:
Originally Posted by Lycosaurus
My new float is Kelly Aerspace... for which the SB should not apply.
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02-04-2009, 08:45 PM
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Join Date: Mar 2005
Location: SE Florida
Posts: 1,499
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Quote:
Originally Posted by Lycosaurus
Thanks for chiming in, Brian, and correcting me on the smurf blue floats. I have corrected my previous posts accordingly so my posts don't induce others in error before they get to read yours.
My new float is Kelly Aerspace... for which the SB should not apply.
[edit] ... and here's the SB from Kelly Aerospace, if you happen to have one of their brass floats
http://www.kellyaerospace[/indent].com/service_pdf/SL027_A_brass_float.pdf
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Alfio,
Your web link didn't work for me. Is it just me, or is there an error in the link?
Charlie Kuss
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02-04-2009, 08:55 PM
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Join Date: Dec 2006
Location: Kalifornia
Posts: 466
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Correction
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02-05-2009, 03:06 AM
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Join Date: Mar 2006
Location: Ottawa, ON
Posts: 650
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Link fixed to previous post
Quote:
Originally Posted by chaskuss
Alfio,
Your web link didn't work for me. Is it just me, or is there an error in the link?
Charlie Kuss
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Fixed the link ... as mentioned, I had an indent in there. Sorry about that ....
__________________
Alfio
RV-9A Ottawa, Canada
First flight Dec. 18, 2008
> 1,000 hrs tach.
Last edited by Lycosaurus : 02-05-2009 at 03:12 AM.
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