---------------------------------------------------------- L29-List Digest Archive --- Total Messages Posted Mon 04/09/18: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:38 AM - Re: Hang Start (skidmk) 2. 08:22 AM - Re: Re: Hang Start (William Geipel) 3. 09:12 AM - Re: Re: Hang Start (cmoersch3) 4. 09:30 AM - Re: Hang Start (skidmk) 5. 05:12 PM - fuel filters (skidmk) 6. 05:15 PM - Re: Hang Start (skidmk) ________________________________ Message 1 _____________________________________ Time: 05:38:18 AM PST US Subject: L29-List: Re: Hang Start From: "skidmk" Update: first thanks to all reponses, love this little community EPU connected: Start normal, hear the fuel pump running, hear the clutch engage, the starter spins, we hear the "secondary boost of amps" and everything spins much quicker, the plugs spark with the same intensity and frequency of our other L29 (so I don't think its the plugs anymore), EGTS arc up to 600, fall back to 575 then 550 as she stays at 20%. We then shut her all down. Went out, and hit air start without fuel etc, so we could hear the sparking, she sparks exactly like the other one we have (she starts fine) I'm thinking start control box now. -------- Mike "Skidmk" Bourget Ottawa, Ontario Read this topic online here: http://forums.matronics.com/viewtopic.php?p=479190#479190 ________________________________ Message 2 _____________________________________ Time: 08:22:48 AM PST US Subject: Re: L29-List: Re: Hang Start From: William Geipel Not trying to be condescending, just throwing things out there. The start control box controls the start sequence. So if it is doing all 3 steps, what could the box not be doing? After 19 seconds the sequence is stopped by the start box. (4th step) The ignitors work. Otherwise there would be no light off. If only one ignites, it would result in a HOT start. It sounds like fuel flow. If the engine starts, EGT rises, RPM increases, it can only be fuel. (It could be air flow if it were an air starter. (Or the intake/exhaust covers where still installed) Just Kidding! As I mentioned before, if the fuel filter was changed, did you bleed the fuel line? Is the Fire Cock open completely? During start, do you push the fuel shut off full forward? When it is at 20%, have you tried pushing the throttle up a little? Has this airplane flown before or is this a new project? Bill > On Apr 9, 2018, at 06:38, skidmk wrote: > > > Update: > > first thanks to all reponses, love this little community > > EPU connected: > Start normal, hear the fuel pump running, hear the clutch engage, the starter spins, > we hear the "secondary boost of amps" and everything spins much quicker, the plugs spark with the same intensity and frequency of our other L29 (so I don't think its the plugs anymore), > EGTS arc up to 600, fall back to 575 then 550 as she stays at 20%. > > We then shut her all down. Went out, and hit air start without fuel etc, so we could hear the sparking, she sparks exactly like the other one we have (she starts fine) > > I'm thinking start control box now. > > -------- > Mike "Skidmk" Bourget > Ottawa, Ontario > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=479190#479190 > > > > > > > > > ________________________________ Message 3 _____________________________________ Time: 09:12:50 AM PST US From: cmoersch3 Subject: Re: L29-List: Re: Hang Start Fuel nozzle issue or main fuel pump pressure? Also spitballing. Christian Sent from my iPhone > On Apr 9, 2018, at 08:22, William Geipel wrote: > > > Not trying to be condescending, just throwing things out there. > > The start control box controls the start sequence. So if it is doing all 3 steps, what could the box not be doing? After 19 seconds the sequence is st opped by the start box. (4th step) > > The ignitors work. Otherwise there would be no light off. If only one igni tes, it would result in a HOT start. > > It sounds like fuel flow. If the engine starts, EGT rises, RPM increases, i t can only be fuel. (It could be air flow if it were an air starter. (Or the intake/exhaust covers where still installed) Just Kidding! > > As I mentioned before, if the fuel filter was changed, did you bleed the f uel line? > > Is the =9CFire Cock=9D open completely? > > During start, do you push the fuel shut off full forward? > > When it is at 20%, have you tried pushing the throttle up a little? > > Has this airplane flown before or is this a new project? > > > Bill >> On Apr 9, 2018, at 06:38, skidmk wrote: >> >> >> Update: >> >> first thanks to all reponses, love this little community >> >> EPU connected: >> Start normal, hear the fuel pump running, hear the clutch engage, the sta rter spins, >> we hear the "secondary boost of amps" and everything spins much quicker, t he plugs spark with the same intensity and frequency of our other L29 (so I d on't think its the plugs anymore), >> EGTS arc up to 600, fall back to 575 then 550 as she stays at 20%. >> >> We then shut her all down. Went out, and hit air start without fuel etc, so we could hear the sparking, she sparks exactly like the other one we hav e (she starts fine) >> >> I'm thinking start control box now. >> >> -------- >> Mike "Skidmk" Bourget >> Ottawa, Ontario >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=479190#479190 >> >> >> >> >> >> >> >> >> > > ========================== ========= ========================== ========= ========================== ========= ========================== ========= ========================== ========= > > > ________________________________ Message 4 _____________________________________ Time: 09:30:35 AM PST US Subject: L29-List: Re: Hang Start From: "skidmk" Thanks so much Bill. 1. Not a project, shes been flying quite a bit 2. Last week, normal start but stayed at 20% for almost the whole 60 secs, then she kicked up and went to normal rpm and egts. 3. A couple of days later weve been experiencing thisnissue. 4. Today swapped igniters. No joy. 5. Fuel is leaking after the start attempt. (In the can the. Out thebtail, we have nice white thick exhaust during the attempt. 6 stays at 20% with reducing Egts, then I shut down. All plugs and covers removed. ;) Firecock fully open. No fuel system service Fuel pressure is at 8kgs per cm2 during this sequence. Mike -------- Mike "Skidmk" Bourget Ottawa, Ontario Read this topic online here: http://forums.matronics.com/viewtopic.php?p=479206#479206 ________________________________ Message 5 _____________________________________ Time: 05:12:34 PM PST US Subject: L29-List: fuel filters From: "skidmk" Hello, I'm looking for 4 -6 units. Mike -------- Mike "Skidmk" Bourget Ottawa, Ontario Read this topic online here: http://forums.matronics.com/viewtopic.php?p=479217#479217 ________________________________ Message 6 _____________________________________ Time: 05:15:35 PM PST US Subject: L29-List: Re: Hang Start From: "skidmk" We will check filter (I doubt it, was serviced -------- Mike "Skidmk" Bourget Ottawa, Ontario Read this topic online here: http://forums.matronics.com/viewtopic.php?p=479218#479218 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message l29-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/L29-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/l29-list Browse Digests http://www.matronics.com/digest/l29-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.