---------------------------------------------------------- KIS-List Digest Archive --- Total Messages Posted Tue 03/24/15: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:25 PM - Re: Re: NEOPRENE HOSE (Galin Hernandez) 2. 03:43 PM - Re: Re: NEOPRENE HOSE (Scott) ________________________________ Message 1 _____________________________________ Time: 03:25:10 PM PST US From: Galin Hernandez Subject: Re: KIS-List: Re: NEOPRENE HOSE My TR-4 has the neoprene hose from the wing to the fuselage as per the plans. One of them started leaking (old age cracking) after 9 years of use. The hose is very inexpensive so I now have it in my "scheduled maintenance" to replace the hose very 5years. On Mon, Mar 23, 2015 at 9:13 AM, mark_trickel wrote : > > The 3/8 I.D. Neoprene hose included in KIS kits was intended for the fuel > line connection between the fuel tanks, and the fuselage. The manual is a > little vague, but there is a drawing of a typical aircraft fuel system > included in the TR-1 Builders Manual (Airframe Assembly section page 8 ). I > did not check, but I am sure the same drawing is in the TR-4 Builders > Manual. The drawing comes from our faster, sleeker, and much more difficu lt > to build cousin, the Lancair 235/320. > > The black rubber hose is a very important piece to the KIS aircraft. I ca n > think of 2 real important reasons for this hose. First it makes hooking u p > the fuel tanks =93 simple. It would be a lot harder to install a me tal piece > of tubing in this tight spot. Second when a wing panel breaks off in a > crash, the neoprene fuel line would separate very easily - you won =99t have > to worry about the fuel line whiplashing about the cockpit (hopefully you > all have plenty of Adell clamps or the like securing the fuel line inside > the cockpit). > > Vinyl tubing was also included in KIS kits for use in the pitot static > system. Some items included in the kits in fact have a shelf life, and th at > includes the neoprene, and vinyl tubing (tires, unused resin and > adhesives). KIS kits are now reaching the 25 year old mark, and owners th at > have KIS aircraft built with these original materials need to seriously > think about replacing or upgrading them if they have not done so already. > The vinyl tubing in my 23 year old is still somewhat serviceable, but I a m > upgrading to Nyloseal tubing, and fittings - those will last a few > lifetimes. > > Some builders did not follow the Builders Manual, it=99s just the n ature of > homebuilt airplanes. Some installed that black rubber hose from the fuel > tanks all the way through the cockpit to the firewall (a very bad idea). My > TR-1 had that black hose from the tanks through the side of the fuselage, > then slid onto the aluminum tubing (no barb) held on by 2 hose clamps, > running 45+ psi automotive fuel pumps in each wing slosh tank. The return > came from the firewall fitting into vinyl tubing, to the fuel valve, back > into vinyl tubing to the tanks. That tubing is now petrified. What =99s in > your fuel system? > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=439763#439763 > > =========== =========== =========== =========== > > ________________________________ Message 2 _____________________________________ Time: 03:43:05 PM PST US From: Scott Subject: Re: KIS-List: Re: NEOPRENE HOSE Fuel system problems are about 25% of the mechanical failures leading to acc idents in homebuilts. I would switch to real aircraft hoses (like aeroquip 303) and hardware for any aircraft system. It is not hard to make up the h oses yourself if you get the mandrel tool. Scott Sent from my iPad > On Mar 24, 2015, at 3:24 PM, Galin Hernandez wrote: > > My TR-4 has the neoprene hose from the wing to the fuselage as per the pla ns. One of them started leaking (old age cracking) after 9 years of use. The hose is very inexpensive so I now have it in my "scheduled maintenance" to r eplace the hose very 5years. > >> On Mon, Mar 23, 2015 at 9:13 AM, mark_trickel wro te: >> >> The 3/8 I.D. Neoprene hose included in KIS kits was intended for the fuel line connection between the fuel tanks, and the fuselage. The manual is a l ittle vague, but there is a drawing of a typical aircraft fuel system includ ed in the TR-1 Builders Manual (Airframe Assembly section page 8 ). I did no t check, but I am sure the same drawing is in the TR-4 Builders Manual. The d rawing comes from our faster, sleeker, and much more difficult to build cous in, the Lancair 235/320. >> >> The black rubber hose is a very important piece to the KIS aircraft. I ca n think of 2 real important reasons for this hose. First it makes hooking up the fuel tanks =93 simple. It would be a lot harder to install a meta l piece of tubing in this tight spot. Second when a wing panel breaks off in a crash, the neoprene fuel line would separate very easily - you won=99 t have to worry about the fuel line whiplashing about the cockpit (hopefully you all have plenty of Adell clamps or the like securing the fuel line insi de the cockpit). >> >> Vinyl tubing was also included in KIS kits for use in the pitot static sy stem. Some items included in the kits in fact have a shelf life, and that in cludes the neoprene, and vinyl tubing (tires, unused resin and adhesives). K IS kits are now reaching the 25 year old mark, and owners that have KIS airc raft built with these original materials need to seriously think about repla cing or upgrading them if they have not done so already. The vinyl tubing in my 23 year old is still somewhat serviceable, but I am upgrading to Nylosea l tubing, and fittings - those will last a few lifetimes. >> >> Some builders did not follow the Builders Manual, it=99s just the n ature of homebuilt airplanes. Some installed that black rubber hose from the fuel tanks all the way through the cockpit to the firewall (a very bad idea ). My TR-1 had that black hose from the tanks through the side of the fusela ge, then slid onto the aluminum tubing (no barb) held on by 2 hose clamps, r unning 45+ psi automotive fuel pumps in each wing slosh tank. The return cam e from the firewall fitting into vinyl tubing, to the fuel valve, back into v inyl tubing to the tanks. That tubing is now petrified. What=99s in yo ur fuel system? >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=439763#439763 >> >> >> >> >> >> >> >> ========== >> List" target="_blank">http://www.matronics.com/Navigator?KIS-List >> ========== >> FORUMS - >> _blank">http://forums.matronics.com >> ========== >> b Site - >> -Matt Dralle, List Admin. >> target="_blank">http://www.matronics.com/contribution >> ========== > > > 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kis-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/KIS-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/kis-list Browse Digests http://www.matronics.com/digest/kis-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.