---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Tue 05/09/06: 32 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:26 AM - ground power jack (Glen Matejcek) 2. 04:39 AM - Electroair failure record? (Dale Walter) 3. 04:53 AM - Firewall Oil cooler location (Ralph E. Capen) 4. 05:05 AM - Crankcase breather vent fitting (Ralph E. Capen) 5. 05:11 AM - Re: Electroair failure record? (Kyle Boatright) 6. 05:15 AM - Re: Electroair failure record? (James Clark) 7. 05:52 AM - Re: Electroair failure record? (Larry Bowen) 8. 08:01 AM - Re: throttle bracket for superior io 360 (Dave Cudney) 9. 08:08 AM - Re: Drilling out screws (was: Fuel Tank Service Bulletin - Mad Rant !) (Jim Anglin) 10. 09:35 AM - NWFC 2006 (Randy Lervold) 11. 09:45 AM - SS prop governor line (Ralph E. Capen) 12. 11:11 AM - Stuck screws (John Fasching) 13. 11:11 AM - Proseal for Sale (John Fasching) 14. 11:44 AM - Re: Proseal for Sale (Ralph E. Capen) 15. 11:54 AM - Re: Proseal for Sale (James H Nelson) 16. 12:35 PM - Re: Stuck screws (Ron Lee) 17. 12:47 PM - Proseal (John Fasching) 18. 01:32 PM - Re: Proseal for Sale (James H Nelson) 19. 02:00 PM - Re: Proseal for Sale (John Jessen) 20. 02:49 PM - Re: throttle bracket for superior io 360 (Jerry2DT@aol.com) 21. 04:56 PM - Re: throttle bracket for superior io 360 (mkejrj@comcast.net) 22. 08:29 PM - Re: throttle bracket for superior io 360 (Dave Cudney) 23. 08:33 PM - Fuel Return Tee (Paul Besing) 24. 08:46 PM - Re: throttle bracket for superior io 360 (Dave Cudney) 25. 09:06 PM - For Sale: Rivet Sets & Supplies, Countersink Cutters, On Top IFR Sim Software (William Scaringe) 26. 09:06 PM - Re: Fuel Return Tee (Bruce Gray) 27. 09:15 PM - Re: Fuel Return Tee (Albert Gardner) 28. 09:15 PM - Re: Fuel Return Tee (Michael McGee) 29. 09:32 PM - Re: Fuel Return Tee (Paul Besing) 30. 09:46 PM - Re: Fuel Return Tee (Albert Gardner) 31. 10:38 PM - Re: Fuel Return Tee (Paul Besing) 32. 11:17 PM - Re: Fuel Return Tee (Richard E. Tasker) ________________________________ Message 1 _____________________________________ Time: 04:26:48 AM PST US From: "Glen Matejcek" Subject: RV-List: ground power jack --> RV-List message posted by: "Glen Matejcek" Hi Erich- Re: Anybody gone to the trouble of installing a ground power jack on their RV? I assume from your note that you have a fwd bat installation. Mine are aft on my -8 so this may well not help you, but I put a ground power receptacle on the belly just aft of the bulkhead aft of the rear bat installation. The mounting bracket I made is attached to the skin as well as the bulkhead. When it will be used I will need to get on my knees to plug it in, but I won't have any college kid ramper in close prox to the prop to pull it out. With the available space between the wing and the prop, and the presence of the main gear (TD), I couldn't conscience putting the receptacle fwd. FWIW- Glen Matejcek aerobubba@earthlink.net ________________________________ Message 2 _____________________________________ Time: 04:39:07 AM PST US From: "Dale Walter" Subject: RV-List: Electroair failure record? --> RV-List message posted by: "Dale Walter" Good morning, I installed the Electoair system recently and it has run smoothly, 12 = hours to date. Was just told by an A&P that it has the potential to = misfire at cruise speed and destroy the engine. Has anyone heard of this = happening, or of a weakness in the design that might cause such an = event? I have heard of misfire problems during startup due to voltage = dropping below 8 volts at the controller, but I don't have that problem. I searched the list archives and Google and found no mention of cruise = speed failure or potential failure. Thanks and have a great week, Dale RV6A 605 hours ________________________________ Message 3 _____________________________________ Time: 04:53:15 AM PST US From: "Ralph E. Capen" Subject: RV-List: Firewall Oil cooler location --> RV-List message posted by: "Ralph E. Capen" Fellow builders, I would like to use Vans stock location for my firewall mounted oil cooler - in order that I can use their prefabbed lines. I'm gonna need to build a couple regardless but they will be -6 instead of the oil cooler -8 lines. I have Vans firewall foreward documentation but don't recall seeing a location called out. I'm using an Aerosport built O360 so the stock engine locations are available. Anyone out there used Vans oil cooler hoses with their called out location? Please give me a leader on their documentation. Thanks, Ralph Capen RV6A QB N822AR @ N06 working on firewall foreward ________________________________ Message 4 _____________________________________ Time: 05:05:57 AM PST US From: "Ralph E. Capen" Subject: RV-List: Crankcase breather vent fitting --> RV-List message posted by: "Ralph E. Capen" Fellow builders, I bought the FF705 and CV9816 breather parts from Vans for venting my Aerosport built O360. Come to find out that the vent fitting on my engine is 5/8" instead of the 3/4" one that the CV9816 is called for. The good news is that the vent fitting on my engine is a 45 degree fitting already pointed aft - so I don't want to change it out. Anyone out there using the 45 degree 5/8" fitting? How did you build up the hoses? Does it work OK? Thanks, Ralph RV6AQB N822AR @ N06 - working on firewall foreward ________________________________ Message 5 _____________________________________ Time: 05:11:16 AM PST US From: "Kyle Boatright" Subject: Re: RV-List: Electroair failure record? --> RV-List message posted by: "Kyle Boatright" I've got 375 hours on my Electroair/0-320 with none of what your A& P suggests. In 10 years of following this list and other similar forums, I don't remember a single reported instance of a cruise misfire causing engine problems. I would ask him about the basis for his comments. Unless he does a lot of work on Experimentals, his experience with the Electroair ignition system is probably very limited. KB ----- Original Message ----- From: "Dale Walter" Sent: Tuesday, May 09, 2006 7:37 AM Subject: RV-List: Electroair failure record? > --> RV-List message posted by: "Dale Walter" > > Good morning, > I installed the Electoair system recently and it has run smoothly, 12 = > hours to date. Was just told by an A&P that it has the potential to = > misfire at cruise speed and destroy the engine. Has anyone heard of this = > happening, or of a weakness in the design that might cause such an = > event? I have heard of misfire problems during startup due to voltage = > dropping below 8 volts at the controller, but I don't have that problem. > I searched the list archives and Google and found no mention of cruise = > speed failure or potential failure. > > Thanks and have a great week, > Dale > RV6A 605 hours > > > ________________________________ Message 6 _____________________________________ Time: 05:15:18 AM PST US From: "James Clark" Subject: Re: RV-List: Electroair failure record? --> RV-List message posted by: "James Clark" After 689.9 hours with one on an O-320 I have not had this occur nor have I heard of it. You can get backfire during cranking (as I have and you have) if the batter= y voltage goes down below 8 volts or so as you say. James On 5/9/06, Dale Walter wrote: > > --> RV-List message posted by: "Dale Walter" > > Good morning, > I installed the Electoair system recently and it has run smoothly, 12 > hours to date. Was just told by an A&P that it has the potential to > misfire at cruise speed and destroy the engine. Has anyone heard of this = > happening, or of a weakness in the design that might cause such an > event? I have heard of misfire problems during startup due to voltage > dropping below 8 volts at the controller, but I don't have that problem. > I searched the list archives and Google and found no mention of cruise = > speed failure or potential failure. > > Thanks and have a great week, > Dale > RV6A 605 hours > > = = = = > > -- This is an alternate email. Please continue to email me at james@nextupventures.com . ________________________________ Message 7 _____________________________________ Time: 05:52:30 AM PST US Subject: Re: RV-List: Electroair failure record? From: "Larry Bowen" --> RV-List message posted by: "Larry Bowen" Mine stumbled in flight on two occasions due to intermittent wiring failure. Search my website for "ignition" for more details. -- Larry Bowen Larry@BowenAero.com http://BowenAero.com > ----- Original Message ----- > From: "Dale Walter" > To: > Sent: Tuesday, May 09, 2006 7:37 AM > Subject: RV-List: Electroair failure record? > > >> --> RV-List message posted by: "Dale Walter" >> >> Good morning, >> I installed the Electoair system recently and it has run smoothly, 12 = >> hours to date. Was just told by an A&P that it has the potential to = >> misfire at cruise speed and destroy the engine. Has anyone heard of this >> = >> happening, or of a weakness in the design that might cause such an = >> event? I have heard of misfire problems during startup due to voltage = >> dropping below 8 volts at the controller, but I don't have that problem. >> I searched the list archives and Google and found no mention of cruise = >> speed failure or potential failure. >> >> Thanks and have a great week, >> Dale >> RV6A 605 hours >> >> >> >> >> >> >> >> >> >> >> >> >> > > ________________________________ Message 8 _____________________________________ Time: 08:01:23 AM PST US From: Dave Cudney Subject: Re: RV-List: throttle bracket for superior io 360 --> RV-List message posted by: Dave Cudney I'll give them a call this morning. thanks dave On May 8, 2006, at 5:55 PM, Tailgummer@aol.com wrote: > --> RV-List message posted by: Tailgummer@aol.com > > Dave, > you may wish to visit the precision website (precisionairmotive > dot com) > and see some installation photos, or call Paul Kalgren there. Paul > is a > wealth of information. Have you also discussed this with > Superior? I'm sure > they'd help as well. > > John D'Onofrio RV8 > > ________________________________ Message 9 _____________________________________ Time: 08:08:49 AM PST US From: "Jim Anglin" Subject: Re: RV-List: Drilling out screws (was: Fuel Tank Service Bulletin - Mad Rant !) --> RV-List message posted by: "Jim Anglin" --> RV-List message posted by: Bill Dube > I have found that if you start with a small drill and slowly = increase > the size, you can drill out the center of the screw with minimal = damage > to the threads in the hole. This is because the screw threads are = harder > than the body of the screw and tend to guide the drill toward the = >center. If you increment the drill size slowly, all that will be = left is >the threads. You can pull them out with a needle nose if they = don't >simply wrap around the last drill. > Bill Dube' I have never had to try it but I have heard from those less fortunate = that a left handed drill bit works quite well for this. Jim Anglin HR II N144HR DO NOT ARCHIVE ________________________________ Message 10 ____________________________________ Time: 09:35:44 AM PST US From: "Randy Lervold" Subject: RV-List: NWFC 2006 --> RV-List message posted by: "Randy Lervold" RVers, Just a reminder that the date for the 1st Annual Northwest Formation = Clinic is approaching... June 30th - July 2nd. Full details on our web = site... http://www.romeolima.com/FormationClinic/ A few notes: -We have a block of rooms reserved at the hotel where we'll hold ground = school, but the block expires June 1st. The hotel is FULL otherwise so = lodging could be an issue if rooms are not reserved by that date. -We need Instructor Pilots (IPs), anyone holding an FFI card or IP = qualified -- we need you! -Based on the number of IPs we may have to limit the roster so sign up = now if you're interested. Again, full info is on our web site, but if there are any other specific = questions just let us know, contact info is on the site. Hope to see you there! Randy Lervold & Mike Wilson ________________________________ Message 11 ____________________________________ Time: 09:45:56 AM PST US From: "Ralph E. Capen" Subject: RV-List: SS prop governor line --> RV-List message posted by: "Ralph E. Capen" Anyone out there have photos of a stainless steel prop governor line installed on their O360? Getting ready to do the same thing and wanna see how it should look when I'm done. Thanks, Ralph ________________________________ Message 12 ____________________________________ Time: 11:11:52 AM PST US From: "John Fasching" Subject: RV-List: Stuck screws --> RV-List message posted by: "John Fasching" Attn: Ron and William: Your suggestions on removing screw bodies that had their heads already = drilled out because they were "frozen" worked just fine. I started with = a #51 bit and went up three or four sizes till I got up to 3/32nds and = then a Craftsman "easy out" - a sort-of reverse cutting bit - easily = rotated the stubs out with no damage to the nut plates behind them, thanks fellowsl John at Salida, CO ________________________________ Message 13 ____________________________________ Time: 11:11:52 AM PST US From: "John Fasching" Subject: RV-List: Proseal for Sale --> RV-List message posted by: "John Fasching" If you want to do the fuel tank pickup tube coupling nut safety wiring = modification, I have a quart of proseal from Van's just received = Saturday and unopened. I will not be doing the change because of = peculiar circumstances, so the $39.35 Van's price is yours for 50% plus = shipping ($18.15 plus either UPS or mail - your choice.) John at Salida, CO ________________________________ Message 14 ____________________________________ Time: 11:44:59 AM PST US From: "Ralph E. Capen" Subject: Re: RV-List: Proseal for Sale --> RV-List message posted by: "Ralph E. Capen" I'll take it..... -----Original Message----- >From: John Fasching >Sent: May 9, 2006 2:07 PM >To: RV List >Subject: RV-List: Proseal for Sale > >--> RV-List message posted by: "John Fasching" > >If you want to do the fuel tank pickup tube coupling nut safety wiring = >modification, I have a quart of proseal from Van's just received = >Saturday and unopened. I will not be doing the change because of = >peculiar circumstances, so the $39.35 Van's price is yours for 50% plus = >shipping ($18.15 plus either UPS or mail - your choice.) > >John at Salida, CO > > > > > > > ________________________________ Message 15 ____________________________________ Time: 11:54:10 AM PST US Subject: Re: RV-List: Proseal for Sale From: James H Nelson --> RV-List message posted by: James H Nelson John, I'll take the pro seal. How do you want the payment?. You can use my UPS number if possible or ship regular UPS.. Jim Nelson RV9Jim@Juno.co, ________________________________ Message 16 ____________________________________ Time: 12:35:05 PM PST US From: Ron Lee Subject: Re: RV-List: Stuck screws --> RV-List message posted by: Ron Lee Glad it worked John. That is one of my most frustrating jobs. Ron Do not archive >Attn: Ron and William: > >Your suggestions on removing screw bodies that had their heads already = >drilled out because they were "frozen" worked just fine. I started with = >a #51 bit and went up three or four sizes till I got up to 3/32nds and = >then a Craftsman "easy out" - a sort-of reverse cutting bit - easily = >rotated the stubs out with no damage to the nut plates behind them, > >thanks fellowsl > >John at Salida, CO > > ________________________________ Message 17 ____________________________________ Time: 12:47:56 PM PST US From: "John Fasching" Subject: RV-List: Proseal --> RV-List message posted by: "John Fasching" DO NOT ARCHIVE Thanks fellows, there were several who wanted it, but by only a few = minutes John Jessen was the first responder so I promised it to = him...thanks anyway. John at Salida, CO ________________________________ Message 18 ____________________________________ Time: 01:32:54 PM PST US Subject: Re: RV-List: Proseal for Sale From: James H Nelson --> RV-List message posted by: James H Nelson John, Who was first??? Jim Nelson ________________________________ Message 19 ____________________________________ Time: 02:00:24 PM PST US From: "John Jessen" Subject: RE: RV-List: Proseal for Sale --> RV-List message posted by: "John Jessen" I replied off-line and guess I beat you guys by a couple minutes. John Jessen RV-10 40328 -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of James H Nelson Sent: Tuesday, May 09, 2006 4:29 PM Subject: Re: RV-List: Proseal for Sale --> RV-List message posted by: James H Nelson John, Who was first??? Jim Nelson ________________________________ Message 20 ____________________________________ Time: 02:49:15 PM PST US From: Jerry2DT@aol.com Subject: Re: RV-List: throttle bracket for superior io 360 --> RV-List message posted by: Jerry2DT@aol.com Hi Dave, If you go here: _http://groups.yahoo.com/group/XP-360Forum/_ (http://groups.yahoo.com/group/XP-360Forum/) , and on the left side under Photos, you will find a "Misc." file. Inside it are a bunch of pix of a throttle bracket I made of steel. It is some 4130 I got from the scrap heap at Van's, measures .055 thick. Any sheet metal shop might have it, or if not, I'd be happy to mail you a piece. HTH Jerry Cochran Wilsonville, OR Time: 04:03:26 PM PST US From: Dave Cudney Subject: RV-List: throttle bracket for superior io 360 --> RV-List message posted by: Dave Cudney I have a Superior XP+ io360 with a composite sump and forward facing Precision EX injection. The throttle bracket that comes with Vans firewall foreword kit. will not work. The Composite sump mounting points are spaced differently and are angled. Has anyone out there encountered this problem and what has been the solution thanks RV 7A N554DL dave ________________________________ Message 21 ____________________________________ Time: 04:56:32 PM PST US From: mkejrj@comcast.net Cc: Dave Cudney Subject: Re: RV-List: throttle bracket for superior io 360 --> RV-List message posted by: mkejrj@comcast.net Dave, I had the same problem installing Superior's engine in my RV8. I fabricated an aluminum bracket which I bolted onto the composite sump and used it as the termination point for the throttle cable. If desired I will mail you my shop drawing of my bracket...Let me know your "snail mail" address if interested.The drawing is the end result of several days of cut and fit and may save you some time. Dick Jordan RV8A ,N888BZ -------------- Original message -------------- From: Dave Cudney > --> RV-List message posted by: Dave Cudney > > I have a Superior XP+ io360 with a composite sump and forward facing > Precision EX injection. > The throttle bracket that comes with Vans firewall foreword kit. will > not work. > The Composite sump mounting points are spaced differently and are > angled. > Has anyone out there encountered this problem and what has been the > solution > > thanks > RV 7A N554DL > dave > > > > > > > > > > > >
Dave,
  I had the same problem installing Superior's engine in my RV8. I fabricated an aluminum bracket which I bolted onto the composite sump and used it as the termination point for the throttle cable.
 
  If desired I will mail you my shop drawing of my bracket...Let me know your "snail mail" address if interested.The drawing is the end result of several days of cut and fit and may save you some time.
 
  Dick Jordan
  RV8A ,N888BZ
 
script ________________________________ Message 22 ____________________________________ Time: 08:29:05 PM PST US From: Dave Cudney Subject: Re: RV-List: throttle bracket for superior io 360 --> RV-List message posted by: Dave Cudney Jerry: I went by Aircraft Spruce and Harbor Freight today. I got some 4130 (.063) and a 4 inch vice break. I've never tried this before -- should be interesting. Hope to come up with something that looks sorta like your pictures. Thanks dave On May 9, 2006, at 2:42 PM, Jerry2DT@aol.com wrote: > --> RV-List message posted by: Jerry2DT@aol.com > > > Hi Dave, > > If you go here: _http://groups.yahoo.com/group/XP-360Forum/_ > (http://groups.yahoo.com/group/XP-360Forum/) , and on the left > side under Photos, you will > find a "Misc." file. Inside it are a bunch of pix of a throttle > bracket I made > of steel. It is some 4130 I got from the scrap heap at Van's, > measures .055 > thick. Any sheet metal shop might have it, or if not, I'd be happy > to mail > you a piece. HTH > > Jerry Cochran > Wilsonville, OR > > Time: 04:03:26 PM PST US > From: Dave Cudney > Subject: RV-List: throttle bracket for superior io 360 > > --> RV-List message posted by: Dave Cudney > > I have a Superior XP+ io360 with a composite sump and forward facing > Precision EX injection. > The throttle bracket that comes with Vans firewall foreword kit. will > not work. > The Composite sump mounting points are spaced differently and are > angled. > Has anyone out there encountered this problem and what has been the > solution > > thanks > RV 7A N554DL > dave > > ________________________________ Message 23 ____________________________________ Time: 08:33:06 PM PST US From: Paul Besing Subject: RV-List: Fuel Return Tee --> RV-List message posted by: Paul Besing I'm plumbing in a new fuel selector, and instead of having my fuel return (older simmons injection that has a fuel return) return to the tank, was thinking of plumbing in a tee in the line just before the fuel pump. This is because the fuel return is currently going to one tank, and makes fuel management a chore. Any reason why I shouldn't do this? Cavatation, etc? Paul Besing __________________________________________________ ________________________________ Message 24 ____________________________________ Time: 08:46:36 PM PST US From: Dave Cudney Subject: Re: RV-List: throttle bracket for superior io 360 --> RV-List message posted by: Dave Cudney Dick: I bought some 0.063" 4130 sheet steel and a vice break to bend it today. I thought I would give fabrication a try. But I would be very interested in your drawings. I called Superior today and talked to Fred in their tech support. He sent me some pictures that are the same as those listed on the XP-360 Forum. There were also some pictures of a Vans throttle bracket where they gave the stock bracket an extra bend. My snail mail address is: Dave Cudney 4996 Cherryhill drive Riverside, CA 92507 Thanks dave On May 9, 2006, at 4:48 PM, mkejrj@comcast.net wrote: > --> RV-List message posted by: mkejrj@comcast.net > > Dave, > I had the same problem installing Superior's engine in my RV8. I > fabricated an aluminum bracket which I bolted onto the composite > sump and used it as the termination point for the throttle cable. > > If desired I will mail you my shop drawing of my bracket...Let me > know your "snail mail" address if interested.The drawing is the end > result of several days of cut and fit and may save you some time. > > Dick Jordan > RV8A ,N888BZ > > -------------- Original message -------------- > From: Dave Cudney > > >> --> RV-List message posted by: Dave Cudney >> >> I have a Superior XP+ io360 with a composite sump and forward facing >> Precision EX injection. >> The throttle bracket that comes with Vans firewall foreword kit. will >> not work. >> The Composite sump mounting points are spaced differently and are >> angled. >> Has anyone out there encountered this problem and what has been the >> solution >> >> thanks >> RV 7A N554DL >> dave >> >> >> >> >> >> >> >> >> >> >> >> >> > >
Dave,
>
  I had the same problem installing Superior's engine in > my RV8. I fabricated an aluminum bracket which I bolted onto > the composite sump and used it as the termination point for the > throttle cable.
>
 
>
  If desired I will mail you my shop drawing of my > bracket...Let me know your "snail mail" address if interested.The > drawing is the end result of several days of cut and fit and may > save you some time.
>
 
>
  Dick Jordan
>
  RV8A ,N888BZ
>
 
> script > > ________________________________ Message 25 ____________________________________ Time: 09:06:15 PM PST US From: William Scaringe Subject: RV-List: For Sale: Rivet Sets & Supplies, Countersink Cutters, On Top IFR Sim Software --> RV-List message posted by: William Scaringe Please see the following items that I posted on Ebay: Rivet Sets, Flat Mushroom, AND 8" Rivet Set Extension http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7618555210 Countersink Cutter Set, 100 degree, 21 pcs http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7618545474 Deburring Bits, Debur Tools, Weldon and Two Sided http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7618564676 2 rolls Rivet Tape, Riveting Gages, Cleco Pliers http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7618538146 On Top IFR Simulator and Instrument Rating Training Course http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1,1&item=4639363699 ________________________________ Message 26 ____________________________________ Time: 09:06:30 PM PST US From: "Bruce Gray" Subject: RE: RV-List: Fuel Return Tee --> RV-List message posted by: "Bruce Gray" Andair has a more elegant solution, a double valve fuel selector. It switches the return line to the tank from which you are drawing. Bruce www.glasair.org -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of Paul Besing Sent: Tuesday, May 09, 2006 11:32 PM Subject: RV-List: Fuel Return Tee --> RV-List message posted by: Paul Besing I'm plumbing in a new fuel selector, and instead of having my fuel return (older simmons injection that has a fuel return) return to the tank, was thinking of plumbing in a tee in the line just before the fuel pump. This is because the fuel return is currently going to one tank, and makes fuel management a chore. Any reason why I shouldn't do this? Cavatation, etc? Paul Besing __________________________________________________ ________________________________ Message 27 ____________________________________ Time: 09:15:13 PM PST US From: "Albert Gardner" Subject: RE: RV-List: Fuel Return Tee --> RV-List message posted by: "Albert Gardner" This is the method that's being used in the RV-10. The fuel is returned to a T installed in the line between the fuel selector valve and the fuel filter. Albert Gardner RV-10 #422 -----Original Message----- Subject: RV-List: Fuel Return Tee I'm plumbing in a new fuel selector, and instead of having my fuel return (older simmons injection that has a fuel return) return to the tank, was thinking of plumbing in a tee in the line just before the fuel pump. This is because the fuel return is currently going to one tank, and makes fuel management a chore. Any reason why I shouldn't do this? Cavatation, etc? Paul Besing ________________________________ Message 28 ____________________________________ Time: 09:15:14 PM PST US From: Michael McGee Subject: Re: RV-List: Fuel Return Tee --> RV-List message posted by: Michael McGee Vapor Lock Assuming this is a continuous full time re-circulation. Fuel gets heated as it circulates through the fuel injection components up front. It needs to go to the tank to cool. It can get hot enough that the boost pump doesn't create enough pressure to overcome the vaporization. I'm not familiar with the Simmons injection you mentioned. This is a typical question/problem for alternate engine installations. These typically have a constant volume or high pressure pump that has a high recirc volume through the pressure regulator. In this case we have to use something like the Andair Duplex (six port) fuel valve so the recirc goes to the tank it came out of. This valve eliminates the fuel management issue you talked about. The valve is unfortunately very expensive at over $300. http://www.andair.co.uk/system/index.html Mike Mike McGee, RV-4 N996RV, O320-E2G, Hillsboro, OR 13B in gestation mode, RD-1C, EC-2 At 20:31 2006-05-09, you wrote: >--> RV-List message posted by: Paul Besing > >I'm plumbing in a new fuel selector, and instead of >having my fuel return (older simmons injection that >has a fuel return) return to the tank, was thinking of >plumbing in a tee in the line just before the fuel >pump. This is because the fuel return is currently >going to one tank, and makes fuel management a chore. > >Any reason why I shouldn't do this? Cavatation, etc? > >Paul Besing ________________________________ Message 29 ____________________________________ Time: 09:32:57 PM PST US From: Paul Besing Subject: RE: RV-List: Fuel Return Tee --> RV-List message posted by: Paul Besing Yeah, I saw that, very pricey, and I only have one line plumbed to one tank. I'd have to spend the $400 on the selector, remove the right tank, take the sender bracket off, plumb a return line to the tank, etc, etc. I thought it was much easier just to plumb the return back into the system, instead of the tank it comes from. Paul Besing --- Bruce Gray wrote: > --> RV-List message posted by: "Bruce Gray" > > > Andair has a more elegant solution, a double valve > fuel selector. It > switches the return line to the tank from which you > are drawing. > > Bruce > www.glasair.org > > > -----Original Message----- > From: owner-rv-list-server@matronics.com > [mailto:owner-rv-list-server@matronics.com] On > Behalf Of Paul Besing > Sent: Tuesday, May 09, 2006 11:32 PM > To: rv-list@matronics.com > Subject: RV-List: Fuel Return Tee > > > --> RV-List message posted by: Paul Besing > > > I'm plumbing in a new fuel selector, and instead of > having my fuel return (older simmons injection that > has a fuel return) return to the tank, was thinking > of > plumbing in a tee in the line just before the fuel > pump. This is because the fuel return is currently > going to one tank, and makes fuel management a > chore. > > Any reason why I shouldn't do this? Cavatation, etc? > > Paul Besing > > > __________________________________________________ > > > > > > > > > > > > > > > > > browse > Subscriptions page, > FAQ, > > > Admin. > > > > > > > > > > > __________________________________________________ ________________________________ Message 30 ____________________________________ Time: 09:46:02 PM PST US From: "Albert Gardner" Subject: RE: RV-List: Fuel Return Tee --> RV-List message posted by: "Albert Gardner" I think this will link to a picture of the assembly out of the plane. Builder is Larry Rosen. http://lrosen.nerv10.com/Construct/Log/Fuselage/Fuel_lines/slides/2006-02-27 -fuel-27.html Albert Gardner RV-10 #422 ________________________________ Message 31 ____________________________________ Time: 10:38:41 PM PST US From: Paul Besing Subject: Re: RV-List: Fuel Return Tee --> RV-List message posted by: Paul Besing It's only about 1 GPH that returns..wouldn't 1 GPH mixing with 9 GPH cool enough? --- Michael McGee wrote: > --> RV-List message posted by: Michael McGee > > > Vapor Lock > Assuming this is a continuous full time > re-circulation. Fuel gets > heated as it circulates through the fuel injection > components up > front. It needs to go to the tank to cool. It can > get hot enough > that the boost pump doesn't create enough pressure > to overcome the > vaporization. > > I'm not familiar with the Simmons injection you > mentioned. This is a > typical question/problem for alternate engine > installations. These > typically have a constant volume or high pressure > pump that has a > high recirc volume through the pressure regulator. > In this case we > have to use something like the Andair Duplex (six > port) fuel valve so > the recirc goes to the tank it came out of. This > valve eliminates > the fuel management issue you talked about. The > valve is > unfortunately very expensive at over > $300. http://www.andair.co.uk/system/index.html > > Mike > Mike McGee, RV-4 N996RV, O320-E2G, Hillsboro, OR > 13B in gestation mode, RD-1C, EC-2 > > > At 20:31 2006-05-09, you wrote: > >--> RV-List message posted by: Paul Besing > > > > >I'm plumbing in a new fuel selector, and instead of > >having my fuel return (older simmons injection that > >has a fuel return) return to the tank, was thinking > of > >plumbing in a tee in the line just before the fuel > >pump. This is because the fuel return is currently > >going to one tank, and makes fuel management a > chore. > > > >Any reason why I shouldn't do this? Cavatation, > etc? > > > >Paul Besing > > > > > > > browse > Subscriptions page, > FAQ, > > > Admin. > > > > > > > > > > > __________________________________________________ ________________________________ Message 32 ____________________________________ Time: 11:17:59 PM PST US From: "Richard E. Tasker" Subject: Re: RV-List: Fuel Return Tee --> RV-List message posted by: "Richard E. Tasker" Yes, but depending on how much fuel is consumed on each trip around the circuit the fuel may get very hot and then you have the makings of a vapor lock problem. If you don't want to replumb it to return fuel back to the source tank, any chance you can add a small header tank? That would allow more volume of fuel to dissipate any heat from the pass through the fuel circuit. On the other hand, if a significant portion of the pumped fuel is consumed each time around the circuit, it may be no problem at all. My $0.02. I have one of the $300 Andair fuel valves ;-) . Dick Tasker Paul Besing wrote: >--> RV-List message posted by: Paul Besing > >Yeah, I saw that, very pricey, and I only have one >line plumbed to one tank. I'd have to spend the $400 >on the selector, remove the right tank, take the >sender bracket off, plumb a return line to the tank, >etc, etc. I thought it was much easier just to plumb >the return back into the system, instead of the tank >it comes from. > >Paul Besing > >--- Bruce Gray wrote: > > > >>--> RV-List message posted by: "Bruce Gray" >> >> >>Andair has a more elegant solution, a double valve >>fuel selector. It >>switches the return line to the tank from which you >>are drawing. >> >>Bruce >>www.glasair.org >> >> >>-----Original Message----- >>From: owner-rv-list-server@matronics.com >>[mailto:owner-rv-list-server@matronics.com] On >>Behalf Of Paul Besing >>Sent: Tuesday, May 09, 2006 11:32 PM >>To: rv-list@matronics.com >>Subject: RV-List: Fuel Return Tee >> >> >>--> RV-List message posted by: Paul Besing >> >> >>I'm plumbing in a new fuel selector, and instead of >>having my fuel return (older simmons injection that >>has a fuel return) return to the tank, was thinking >>of >>plumbing in a tee in the line just before the fuel >>pump. This is because the fuel return is currently >>going to one tank, and makes fuel management a >>chore. >> >>Any reason why I shouldn't do this? Cavatation, etc? >> >>Paul Besing >> >> >>__________________________________________________ >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >>browse >>Subscriptions page, >>FAQ, >> >> >>Admin. >> >> >> >> >> >> >> >> >> >> >> >> >> > > >__________________________________________________ > > > > > > > > > -- Please Note: No trees were destroyed in the sending of this message. We do concede, however, that a significant number of electrons may have been temporarily inconvenienced. --