-1 Fuel System
From Marvel-Schebler service bulletin: Foam floats may deteriorate in certain fuels and fuel additives. Brass floats, regardless of manufacturer, may crack, leak, corrode, and/or mechanically fail. White plastic hollow floats may leak. Deteriorated, leaking, or broken floats can negatively affect engine performance, regardless of the identity of the manufacturers of such floats. Volare and its immediate predecessor Precision Airmotive have worked arduously to address these issues by developing the first solid, blue epoxy composite float. This float is impervious to the fuels and fuel additives used in the aviation industry today. The solid, blue epoxy float is not a “foam” float. It is not a thermoplastic. It has no soldered or riveted joints. Being solid, it cannot fill with fluid and sink, even if pierced. The float is essentially chemically inert. The stainless steel bracket is cast securely into the float body and is not subject to separation in normal use. This float design has been in production for several years. It is installed in thousands of carburetors, including carburetors sold by Volare and its predecessor to current engine manufactures since its introduction. There are no known cases of failure or malfunction of this design.
The previous generation solid foam/plastic floats could in some cases absorb fuel and become heavy.
How much do they want for this new Blue float?
Thanks to all who gave me inputs. I finally had the opportunity to remove the rubber fuel hose connecting the right fuel tank to the rigid fuel line in the wing root. Wow! The hose was completely rotted on the inside and actually crumbling and blocked. Also my A&P said this hose that was used in 1995 for the rebuild was not even approved for fuel (MIL 6000?). Glad we found something definitive so I can return to flying with confidence. I would highly recommend folks take a look at their hoses if they’ve been on there awhile. This one looked great on the outside. Thanks again. Gotta love the wealth of knowledge in this group.
MIL-H-6000 is approved for fuel, coolant, oil, alcohol, and water. No hose should be in service 27 years unless its teflon inside and braided stainless on the outside. Ten years is my limit on rubber hose. Replacing the other side too?
Don't forget to make sure there is an electrical jumper wire around the section of rubber hose.
Thanks for the information. I always like learning new stuff, especially from other peoples issues instead of my own. 🤣
Karl A Vogelheim