About to rebuild my carbs

[Av8r3400]

Unofficially, any fuel proof epoxy will work. (JBWeld)

Another piece of advise, if your floats weigh fine, DO NOT REPLACE THEM. Seriously, if they ain't broke don't replace them!

[HighWing]

This is ancient history, but my tendency now would go with the ain't broke advice - with the exception of the diaphragm and other more fragile parts. When I did my overhaul in the old days, the first attempt at a test flight resulted in a very rough running engine with fuel all over the place below the vent tubes. I learned that they had sent another needle version that didn't stop fuel flow into the already "full" float bowls. I replaced with the old needles.and put another 600 hours on the airplane. A note on ultrasonic cleaning. What is being used as the fluid in the ultrasonic bath. The reason I ask is that there are numerous chemicals that can be used that would not harm epoxy but would loosen sediments for rinsing. Is the fluid prescribed by Rotax?

[Dorsal]

Thanks for the JBweld advice, I also weighed the floats and they are fine. The only parts I replaced were O-rings and the diaphragm. They are all back together, the throttle action is noticeably smoother, the 0-ring was sticky and gunked up. Hopefully in the plane next weekend.

[Av8r3400]

Lowell, plain water will remove/loosen the epoxy in a heated ultrasonic cleaner. I usually use water with a couple drops of dawn dish soap.

[tommg13780]

Mr Fin,

Good decision to do your own carb work. I made the mistake of sending my carbs, that were working fine, to a "leading" vendor. The estimated cost was $500, actual came in at over $1,100. The most aggravating part was the fact that they returned home with 3 of the 4 floats defective. Then the next insult was refusal by means of ignoring me to at least replace the defective floats. This was happening simultaneous with the first defective float crisis. I know this is not typical and for those of you who want to make excuses I will agree in advance that it's probably the way I packed them for shipping which caused the faulty workmanship.

Another solution is new carbs from an ebay seller that has pairs from time to time at $350 NIB with throttle sensor for turbo on one of the units.
Where they originated from I have no idea but that's what I've been flying for the last 60 hours trouble free.

By the way I remember your exceptionally nice Kitfox from the Northeast Regional Flyin hosted by Chris Engler.

[Dorsal]

Sorry to hear of the troubles, sounds like you got quite a deal on new ones! I just have to touch up a few sealed ports and I think I am good to go. We should piggyback on an existing flyin (hosting our own was too complicated).

[airlina]

Sorry to hear of the troubles, sounds like you got quite a deal on new ones! I just have to touch up a few sealed ports and I think I am good to go. We should piggyback on an existing flyin (hosting our own was too complicated).

Sounds like a plan Finn, lets keep an eye out for a centrally located flyin this summer. would be good to see a bunch of Noreasters again. Bruce N199CL