---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Sat 01/15/11: 23 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:56 AM - Re: Re: Kolb/Jabiru carb overflow () 2. 03:56 AM - Re: Re: Kolb/Jabiru carb overflow (Ron @ KFHU) 3. 06:23 AM - Re: Re: Kolb/Jabiru carb overflow (John Hauck) 4. 06:59 AM - Re: zenair floats plans. (Ellery Batchelder Jr) 5. 07:09 AM - Re: Re: Kolb/Jabiru carb overflow (Jack B. Hart) 6. 07:49 AM - Re: Re: Kolb/Jabiru carb overflow (frank goodnight) 7. 10:14 AM - Re: Kolb/Jabiru carb overflow (Jason Omelchuck) 8. 11:11 AM - Re: Re: Kolb/Jabiru carb overflow (robert bean) 9. 11:28 AM - Pitot static port location (Mike Welch) 10. 11:50 AM - Re: Pitot static port location (John Hauck) 11. 12:42 PM - Re: Pitot static port location (Mike Welch) 12. 12:54 PM - Re: Re: Kolb/Jabiru carb overflow (b young) 13. 01:08 PM - Re: Pitot static port location (b young) 14. 01:44 PM - Re: Pitot static port location (Mike Welch) 15. 03:36 PM - Re: zenair floats plans. (Malcolm Brubaker) 16. 03:40 PM - Re: Pitot static port location (Richard Girard) 17. 06:36 PM - Re: Re: Kolb/Jabiru carb overflow (zeprep251@aol.com) 18. 06:46 PM - Re: Pitot static port location (Mike Welch) 19. 07:05 PM - Re: Pitot static port location (John Hauck) 20. 07:49 PM - Re: Pitot static port location (b d) 21. 07:59 PM - Re: Kolb/Jabiru carb overflow (ces308) 22. 08:57 PM - Re: Kolb/Jabiru carb overflow (ces308) 23. 09:06 PM - Re: Pitot static port location (Mike Welch) ________________________________ Message 1 _____________________________________ Time: 01:56:02 AM PST US From: Subject: Re: Kolb-List: Re: Kolb/Jabiru carb overflow ARE YOUR TANKS VENTING CORRECTLY? ________________________________ Message 2 _____________________________________ Time: 03:56:55 AM PST US From: "Ron @ KFHU" Subject: Re: Kolb-List: Re: Kolb/Jabiru carb overflow Is there supposed to be a fuel return line or something like that, that may be plugged up? I am trying to remember from the Mikuni iirc on the Cuyana I flew last year. But it had a pulse pump and very little pressure I guess. Why is yours flooding is not making any sense. It may not be flooding at all. and in fact it may be too lean. I would check and make sure there are no cracks in the fuel lines. I had to put down the Pterodactyl on my maiden flight next to a MacDonald restaurant because of a crack in the fuel primer pump nipple. It displayed the symptoms of too rich, poor throttle response and chocking at full throttle, and it progressively got worse till I could not maintain altitude. Check all of your lines for cracks anything from the fuel tank to the Carb. ________________________________ Message 3 _____________________________________ Time: 06:23:13 AM PST US From: "John Hauck" Subject: Re: Kolb-List: Re: Kolb/Jabiru carb overflow I hope so...cause I'm going nutts !!!! LOL chris ambrose Chris A/Folks: If it was mine, I would have already replaced the fuel pump with a new serviceable pump. Not worth the chance of getting hurt and/or ruining your airplane being a test pilot. How much does a new pump cost? Of course, as I age I am not nearly as bold as I used to be. ;-) john h mkIII hauck's holler Titus, Alabama ________________________________ Message 4 _____________________________________ Time: 06:59:58 AM PST US Subject: Re: Kolb-List: zenair floats plans. From: Ellery Batchelder Jr My Grosse weight is 1250 I would probably sink them Ellery Batchelder Jr. -----Original Message----- From: Malcolm Brubaker Sent: Fri, Jan 14, 2011 7:46 pm Subject: Re: Kolb-List: zenair floats plans. $2000 firm on the price they are prety nice floats i lost all my pics onth e computer so no build pics but i could take some of them they are wraped in phome and suran hanging in my hanger they are 12 ft long 950 displaceme nt w one rutter no rigging Malcolm Brubaker Michigan Sport Pilot Repair LSRM-A, PPC, WS (989)513-3022 From: "elleryweld@aol.com" Sent: Wed, January 12, 2011 7:04:50 PM Subject: RE: Kolb-List: zenair floats plans. -----Original Message----- From: "Malcolm Brubaker" Subject: Kolb-List: zenair floats plans. several years aho i sold a set of plans for the zenair floats to a Kolber can anyone rember buying a set? i lost my copy and need another mal Malcolm Brubaker Michigan Sport Pilot Repair LSRM-A, PPC, WS (989)513-3022 malcolm i am the one that got the plans for the floats from you i will see about getting a copy made up i will let you know when i have that done i think i remember where i last had them ________________________________ From: "elleryweld@aol.com" Sent: Wed, January 12, 2011 7:43:44 AM Subject: RE: Kolb-List: Air foil for cable... would it reduce drag on a cable if you was to fold a peice of vinal tape in half to leave a 3/4 inch trailing edge? let the testing begin -----Original Message----- From: "Nick Cassara" Subject: Kolb-List: Air foil for cable... Kolber's, A year or two ago someone posted drag values for parts of a Kolb, if I remember right. I was amazed at the drag values for the cables on the p; -Matt Drall=========== ======================== =========== -= - The Kolb-List Email Forum - -= Use the Matronics List Features Navigator to browse -= the many List utilities such as List Un/Subscription, -= Archive Search & Download, 7-Day Browse, Chat, FAQ, -= Photoshare, and much much more: - -= --> http://www.matronics.com/Navigator?Kolb-List - -======================== ======================== =========== -= - MATRONICS WEB FORUMS - -= Same great content also available via the Web Forums! - -= --> http://forums.matronics.com - -======================== ======================== =========== -= - List Contribution Web Site - -= Thank you for your generous support! -= -Matt Dralle, List Admin. -= --> http://www.matronics.com/contribution -======================== ======================== =========== ________________________________ Message 5 _____________________________________ Time: 07:09:16 AM PST US From: "Jack B. Hart" Subject: Re: Kolb-List: Re: Kolb/Jabiru carb overflow At 10:25 PM 1/14/11 -0800, you wrote: > >Hello all.. ...........................> > >What I think is happening is when we cut it off it just took longer for the fuel to build up pressure and once everything was full of gas,the spring was still working and although it wasn't going up as far, when it did push up,it was still pushing at 7# psi...we only shortened the spring...not relieve any tension......do you see what I mean??? does it make any sense??? I hope so...cause I'm going nutts !!!! LOL > Chris, The force (F) exerted by the fuel pump spring is equal to the change in spring length (L) times the spring constant (K). Or F = L x K. L is predetermined by the cam lobe in the engine. The spring constant is determined by type of material and diameter of the spring wire. So you are correct when you do not see any change due to cutting the spring. You did not change the pump stroke or the wire spring constant. The only way to reduce pump stroke (L) is to add gasket material to the point that the cam follower does not remain in contact with the cam. The only other option is to replace the spring with one that is the same physical size but wound from smaller diameter wire thereby reducing the spring constant (K). If your new silver spring does not do the job, and pressure remains too high, purchase a new spring that is close to the same length and outside diameter, but with smaller diameter wire. Springs can be purchased over the web and in some cases from your local hardware store. Jack B. Hart FF004 Winchester, IN ________________________________ Message 6 _____________________________________ Time: 07:49:57 AM PST US From: frank goodnight Subject: Re: Kolb-List: Re: Kolb/Jabiru carb overflow Hi , never having seen your fuel pump or the spring that controls the presu re , =0Ai'd like to hazzard=0Aa guess. Hopefully if I' wrong some of the mo re knoweledgabe folks on- the the =0Alist can correct=0Ame before any dam age is done.-I have always thought that if a spring was made =0Ashorter ( cut ) that=0Awould make-the spring-stiffer ---easy to check, just cut a n old spring and see =0Awhat happens---.=0ALooks to me like that would rais e the fuel presure, could be you need a longer =0A(stretched ?)sprnig=0Aor one with thiner wire.=0AFrank Goodnight-=0A=0A=0A=0A=0A=0A=0A____________ ____________________=0AFrom: Jack B. Hart =0ATo: k olb-list@matronics.com=0ASent: Sat, January 15, 2011 9:08:06 AM=0ASubject: Re: Kolb-List: Re: Kolb/Jabiru carb overflow=0A=0A--> Kolb-List message pos ted by: "Jack B. Hart" =0A=0AAt 10:25 PM 1/14/11 - .com>=0A>=0A>Hello all..=0A...........................>=0A> =0A>What I thin k is happening is when we cut it off it just took longer for the =0Afuel to build up pressure and once everything was full of gas,the spring was =0Ast ill working and although it wasn't going up as far, when it did push up,it =0Awas still pushing at 7# psi...we only shortened the spring...not relieve any =0Atension......do you see what I mean???- does it make any sense??? - I hope =0Aso...cause I'm going nutts !!!!- LOL=0A>=0A=0AChris,=0A=0AT he force (F) exerted by the fuel pump spring is equal to the change in =0As pring length (L) times the spring constant (K).- Or F = L x K.- L is =0Apredetermined by the cam lobe in the engine.- The spring constant is =0Adetermined by type of material and diameter of the spring wire.=0A=0ASo you are correct when you do not see any change due to cutting the spring. =0AYou did not change the pump stroke or the wire spring constant.- The o nly =0Away to reduce pump stroke (L) is to add gasket material to the point that =0Athe cam follower does not remain in contact with the cam.- The o nly other =0Aoption is to replace the spring with one that is the same phys ical size but =0Awound from smaller diameter wire thereby reducing the spri ng constant (K).=0A=0AIf your new silver spring does not do the job, and pr essure remains too =0Ahigh, purchase a new spring that is close to the same length and outside =0Adiameter, but with smaller diameter wire.- Springs can be purchased over the =0Aweb and in some cases from your local hardwar - - - - - - - - - - - - - - - -Matt Dralle, L ======= ________________________________ Message 7 _____________________________________ Time: 10:14:01 AM PST US Subject: Kolb-List: Re: Kolb/Jabiru carb overflow From: "Jason Omelchuck" ces308 wrote: > > Frank is sending me his NEW silver spring which is supposed to be 2-3 lbs...if that does not work I will put a regulator on and set it to 2-3 lbs.. > Again..Thank you Frank ! > > chris ambrose > M3X/Jabiru A-2200 172.0hrs > N327CS Hello Chris, Be careful that the fuel pressure regulator you use does not restrict flow. I put one of those round silver types with a dial on my airplane and at extended high power settings it would not allow enough fuel to flow. It caused an engine out on my first flight in my MKIII. Regards Jason Read this topic online here: http://forums.matronics.com/viewtopic.php?p=327117#327117 ________________________________ Message 8 _____________________________________ Time: 11:11:19 AM PST US Subject: Re: Kolb-List: Re: Kolb/Jabiru carb overflow From: robert bean As one who has had experience with those "round silver" regulators....... They are not all created equal. The one from NAPA will work. Others can be junk even though they appear similar. I recommend simply using the lowest pressure output facet from AC spruce with no regulator. Why? because if the diaphragm in the regulator fails, it fails closed. BB MKIII, suzuki On 15, Jan 2011, at 1:11 PM, Jason Omelchuck wrote: > > > ces308 wrote: >> >> Frank is sending me his NEW silver spring which is supposed to be 2-3 lbs...if that does not work I will put a regulator on and set it to 2-3 lbs.. >> Again..Thank you Frank ! >> >> chris ambrose >> M3X/Jabiru A-2200 172.0hrs >> N327CS > > > Hello Chris, > > Be careful that the fuel pressure regulator you use does not restrict flow. I put one of those round silver types with a dial on my airplane and at extended high power settings it would not allow enough fuel to flow. It caused an engine out on my first flight in my MKIII. > > Regards > Jason > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=327117#327117 > > > > > > > > > > ________________________________ Message 9 _____________________________________ Time: 11:28:23 AM PST US From: Mike Welch Subject: Kolb-List: Pitot static port location Guys, I'm VERY close to being able to permanently install my front instrument panel/console. I have already installed the overhead panel. Next will be the task of hooking up the various sending units, loose wires, etc., the stuff you can't do until the panel gets installed into the plane. As far as all the wires between the two panels is concerned, this is simply a matter of plugging together two DB15 plugs. As many of you may recall, I recently installed my airspeed indicator pitot (under the front edge of the nosecone). Yesterday, I made the static pitot fitting (for the unpressurized static source) Here's my question; Do any of you have a recommended place on the nosecone for the static pitot fitting? Or is it okay to locate it ANYWHERE on the side of the nosecone? The inlet hole for the static air is a drilled hole about .025 dia. (It is TINY!!!!!, just slightly larger around than a pin) Here is a second question! To make sure that the exterior fitting doesn't get either higher or lower pressure than static, would it be a good idea to drill an EXTRA hole into one of the interior static line "T's? (the static line supplies air to 3 instruments) By drilling an extra hole into an interior T, I would be allowing for BOTH static air inside and outside of the cabin. I know you are not supposed to rely ONLY on inside static air, because it is possible that the inside cabin MAY have slightly higher or lower static air, due to cabin design. Anyone have some training on the pitot system, and at this point, the static part of it? Thanks for any advice, Mike Welch MkIII ________________________________ Message 10 ____________________________________ Time: 11:50:40 AM PST US From: "John Hauck" Subject: Re: Kolb-List: Pitot static port location Anyone have some training on the pitot system, and at this point, the static part of it? Thanks for any advice, Mike Welch Mike W/Gang: I have no training on the the pitot/static system, only practical experience that works for me. If I was going to use a system similar to yours, I would use a static port on each side of the nose cone, combine these two ports into a T fitting, then into your instruments. By doing this, you eliminate the pressurization or vacuum of a single port when the aircraft is not quite in yaw trim, one side or the other. Once flying, the static ports can be calibrated by taking a tiny bit of material off the aft side of each static port, if they are pressurizing, or off the forward side of the hole if it is creating a vacuum. The reason I settled on this system for my Firestar is because I tried it single first, then found it to be a more workable solution with two ports. BTW: I used 1/16" ID ports. john h mkIII hauck's holler Titus, Alabama ________________________________ Message 11 ____________________________________ Time: 12:42:15 PM PST US From: Mike Welch Subject: RE: Kolb-List: Pitot static port location > If I was going to use a system similar to yours=2C I would use a static p ort > on each side of the nose cone=2C combine these two ports into a T fitting =2C > then into your instruments. By doing this=2C you eliminate the pressuriza tion > or vacuum of a single port when the aircraft is not quite in yaw trim=2C one > side or the other. > > Once flying=2C the static ports can be calibrated by taking a tiny bit of > material off the aft side of each static port=2C if they are pressurizing =2C or > off the forward side of the hole if it is creating a vacuum. > > The reason I settled on this system for my Firestar is because I tried it > single first=2C then found it to be a more workable solution with two por ts. > > BTW: I used 1/16" ID ports. > > john h > mkIII > hauck's holler > Titus=2C Alabama John=2C I clearly see the logic in the "each side" of the fuselage idea. It seem s as though if one side were being slightly pressurized=2C for the most part=2C the opposite side would equally 'depressurized'. I need to get another 'T'. What about the interior hole through one of the 'T's'=2C which would incl ude the inside of the cabin into the static system? A small hole into one of the ' T's' (in the static source) would then be giving you three locations of "suppose dly" unpressurized air=3B left side fuselage=2C right side fuselage=2C interior fuselage. Is this unnecessary=2C would it help any? Opinions??? I did a quick check of A/C Spruce=2C and this is vitually identical to wh at I made=2C except that my circular flat part is MUCH thinner than theirs=3B http://www.aircraftspruce.com/catalog/inpages/alumstaticports.php Also=2C from the looks of it in the photo=2C my drilled hole appears to b e the exact same size as in the photo. I'm trying to keep the inlet hole as small as p ossible=2C to reduce any "ram air" affect. I'll do some more research on the inlet hole size. Thanks for the pointers.....especially the 'each side of the fuselage' pa rt. Mike Welch ________________________________ Message 12 ____________________________________ Time: 12:54:59 PM PST US From: "b young" Subject: Re: Kolb-List: Re: Kolb/Jabiru carb overflow I recommend simply using the lowest pressure output facet from AC spruce with no regulator. Why? because if the diaphragm in the regulator fails, it fails closed. BB MKIII, suzuki >>>>>>>>>>>>>>>>> I don't have any experience with this regulator. But all the regulators I've been familiar with, when they fail, they fail open. From my experience all regulators are all open until the outlet pressure reaches the set point, then the outlet pressure presses against the diaphragm working against the spring pressure to close them. as the gas is burned off,, the pressure on the diafram drops and the valve opens to let more gas through till the set point is reached and it is again off.... a continual small use through the carbs (the engine is running) will set up a small flow through the regulator to keep up with the rate of burn. if the top of the diafram is vented,, and the diafram leaks the device will leak. i have rarely seen a regulator stick shutt. it is normaly caused by something jaming or sticking in the valve. Boyd young mkiii using the lowest setting faucett pump in serries with the engine driven pump on a 912 ________________________________ Message 13 ____________________________________ Time: 01:08:14 PM PST US From: "b young" Subject: Re: Kolb-List: Pitot static port location Here's my question; Do any of you have a recommended place on the nosecone for the static pitot fitting? Or is it okay to locate it ANYWHERE on the side of the nosecone? The inlet hole for the static air is a drilled hole about .025 dia. (It is TINY!!!!!, just slightly larger around than a pin) >>>>>>>>>>>>>> sorry about the drawing... this is what i did. boyd young mkiii ________________________________ Message 14 ____________________________________ Time: 01:44:29 PM PST US From: Mike Welch Subject: RE: Kolb-List: Pitot static port location Hi Boyd=2C Thanks for the drawing=2C your drawing is plenty good enough for us to get the idea of what you have. But=2C I would prefer to use those flush-mount type of static ports like I previously showed the link of=3B the ones that look like this=3B http://www.aircraftspruce.com/catalog/inpages/alumstaticports.php From what I've been researching=2C I think John has me headed in the right direction=2C namely a port on each side of the fuselage. I'm afraid that if I had a port on the underside of the Xtra nosecone it would definitely be getting slightly pressurized air with the flush mounted type ports. I still not sure about the interior vent hole through one of the "T's"=2C though. >From what I've been reading=2C it may not be all that necessary=2C especially if a guy went with two side ports! I did find that a Cessna 150 uses a .040" static hole (the guy said 1mm =2C which is .040") Cessna also has only one outside port=2C too. Some of them have an inside port=2C which I guess you can open by way of a knob or something=2C if you thought the outside was plugged=2C iced over=2C or w hatever. Thanks for the input=2C guys. I think I have enough good information to go ahead and finish the static line installation. Mike Welch MkIII ________________________________ Message 15 ____________________________________ Time: 03:36:10 PM PST US From: Malcolm Brubaker Subject: Re: Kolb-List: zenair floats plans. at grose you would.mine atre best suted for a singleseat or firestar-- --- -i =0Ahave a set of aeroset floats for $5,000=0A-Malcolm Brub aker =0AMichigan Sport=0APilot Repair =0ALSRM-A, PPC, WS=0A(989)513-3022 =0A=0A=0A=0A=0A________________________________=0AFrom: Ellery Batchelder J r =0ATo: kolb-list@matronics.com=0ASent: Sat, January 1 5, 2011 9:56:18 AM=0ASubject: Re: Kolb-List: zenair floats plans.=0A=0AMy G rosse weight is 1250 I would probably sink them =0A=0A=0AEllery Batchelder Jr.=0A=0A=0A-----Original Message-----=0AFrom: Malcolm Brubaker =0ATo: kolb-list@matronics.com=0ASent: Fri, Jan 14, 2011 7:46 p m=0ASubject: Re: Kolb-List: zenair floats plans.=0A=0A=0A$2000 firm on the price they are prety nice floats i lost all my pics onthe =0Acomputer so no build pics but i could take some of them they are wraped in =0A=0Aphome an d suran hanging in my hanger-- they are 12 ft long- 950 displacement w =0Aone rutter no rigging =0A=0A-Malcolm Brubaker =0AMichigan Sport=0APi lot Repair =0ALSRM-A, PPC, WS=0A(989)513-3022 =0A=0A=0A=0A=0A______________ __________________=0AFrom: "elleryweld@aol.com" =0ATo: kolb-list@matronics.com=0ASent: Wed, January 12, 2011 7:04:50 PM=0ASubject: "elleryweld@aol.com" =0A=0A=0A-----Original Message---- -=0ADate: Wednesday, January 12, 2011 5:53:36 pm=0ATo: kolb-list@matronics. com=0AFrom: "Malcolm Brubaker" =0ASubject: Kolb-List : zenair floats plans.=0A=0Aseveral years aho i sold a set of plans for the zenair floats to a-Kolber =0A-can anyone rember buying a set?-- i lost my copy and need another- mal=0A-Malcolm Brubaker =0AMichigan Spor t=0APilot Repair =0ALSRM-A, PPC, WS=0A(989)513-3022 =0A=0Amalcolm i am the one that got the plans for the floats from you i will see about =0Agetting a copy made up i will let you know when i have that done i think i =0Aremem ber where i last had them=0A=0A=0A________________________________=0AFrom: "elleryweld@aol.com" =0ATo: kolb-list@matronics.com=0AS ent: Wed, January 12, 2011 7:43:44 AM=0ASubject: RE: Kolb-List: Air foil fo ryweld@aol.com>=0A=0Awould it reduce drag on a cable if you was to fold a p eice of vinal tape in half =0A=0Ato leave a 3/4 inch trailing edge?- let the testing begin =0A=0A-----Original Message-----=0ADate: Wednesday, Janua ry 12, 2011 2:36:20 am=0ATo: =0AFrom: "Nick Cassar a" =0ASubject: Kolb-List: Air foil for cable...=0A=0AK olber's,=0A=0A=0A=0AA year or two ago someone posted drag values for parts of a Kolb, if I=0Aremember right. I was amazed at the drag values for the c ables on the p; - - - - =0A- - - - - - -Matt Drall= ============0A=0A=0A=0A=0A=0A ======= ==== =0Arget=_blank>http://www.matronics.com/Navigator?Kolb-List ============0A tp://forums.matronics.com ==== ======= =0A_blank>http://www.matronics.com/contribution== ======================= =0A =0A=0A=0A ________________________________ Message 16 ____________________________________ Time: 03:40:46 PM PST US Subject: Re: Kolb-List: Pitot static port location From: Richard Girard Mike, I'd recommend you do either static ports or just vent them into the cockpit, not both, for the simple reason I think you'll play heck trying to tune the system if you have both. Yes, some Cessnas have an alternate static source valve with a knob on the panel to actuate it, for those that don't, student pilots are taught that should ice fowl the static ports the solution is to break the glass face of the VSI and vent the system that way. Rick Girard On Sat, Jan 15, 2011 at 3:41 PM, Mike Welch wrote: > Hi Boyd, > > Thanks for the drawing, your drawing is plenty good enough > for us to get the idea of what you have. > > But, I would prefer to use those flush-mount type of static ports like > I previously showed the link of; the ones that look like this; > > http://www.aircraftspruce.com/catalog/inpages/alumstaticports.php > > From what I've been researching, I think John has me headed in > the right direction, namely a port on each side of the fuselage. > I'm afraid that if I had a port on the underside of the Xtra nosecone > it would definitely be getting slightly pressurized air with the flush > mounted type ports. > > I still not sure about the interior vent hole through one of the "T's", > though. > >From what I've been reading, it may not be all that necessary, > especially if a guy went with two side ports! > > I did find that a Cessna 150 uses a .040" static hole (the guy said 1mm, > which is .040") Cessna also has only one outside port, too. Some > of them have an inside port, which I guess you can open by way of a knob > or something, if you thought the outside was plugged, iced over, or > whatever. > > Thanks for the input, guys. I think I have enough good information to go > ahead and finish the static line installation. > > Mike Welch > MkIII > > > * > > * > > -- Zulu Delta Kolb Mk IIIC 582 Gray head 4.00 C gearbox 3 blade WD Thanks, Homer GBYM It is not bigotry to be certain we are right; but it is bigotry to be unable to imagine how we might possibly have gone wrong. - G.K. Chesterton ________________________________ Message 17 ____________________________________ Time: 06:36:12 PM PST US Subject: Re: Kolb-List: Re: Kolb/Jabiru carb overflow From: zeprep251@aol.com Chris, Any possibility of high crankcase pressure pulsing the fuel pump diaphram? Is the vent system open to atmospheric pressure? I just think the spring failing is a stretch. Thanks G.Aman -----Original Message----- From: ces308 Sent: Thu, Jan 13, 2011 10:53 am Subject: Kolb-List: Re: Kolb/Jabiru carb overflow Mike and John,hello, The fuel pump is on the side of the engine,right in the slipstream and hang s upside down and tilted...it looks like oil for lubrication comes from just enough clearance around the push-rod to drip on the pump actuator and then a small ,about an 1/8 " hole at the bottom for an oil return to the crank case...there is a cavity above that where the return spring is that has no air going through it or oil getting to it,so with the slipstream of cold air go ing over the hot/warm pump case it has to be making some moisture there....I do n't think it's a lot ,but enough to collect on the spring and the bottom of the diaphragm.I have never seen moisture in the oil fill tube or the dipstick.. .Oil temps in the winter...at 16* is 160-185...I have never found any water in m y fuel system... I'll get a picture of where the pump goes on so you can see what I'm talkin g about... chris ambrose M3X/Jabiru A-2200 172. hrs TT N327CS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=326879#326879 ________________________________ Message 18 ____________________________________ Time: 06:46:16 PM PST US From: Mike Welch Subject: RE: Kolb-List: Pitot static port location >Mike=2C I'd recommend you do either static ports or just vent them into th e cockpit=2C not both=2C for the simple reason I think you'll play heck >tr ying to tune the system if you have both. >>Rick Girard Hi Rick=2C I'd say at this point I agree with you and John=2C I ought to go with jus t the two side ports. I'm just thinking out-loud here........ At the risk of over-thinking this I was just wondering=2C since the main objective of the 'static' source is simply that=2C "static" =2C what we wa nt is absolutely uncharged=2C unpressurized air. I definitely see the logic in J ohn's suggestion of the two side ports=2C but just the fact that the air is rushi ng past a nosecone has GOT to have some kind of slight pressurization=2C whether it be positive or negative=2C however slight it may be. When I try to wrap my mind around the objective of getting an "ambient" static air source=2C I can't picture how having both (two side port fitting s and an inside hole in a fitting 'T') would do anything but create an even bette r balance to having zero pressure. I'm not arguing with you=2C I just don't see it intuitively. You might b e absolutely correct. It was my intention all along to try out the whole airspeed indicator(s) system in the car. Since my entire panel is somewhat portable at this point=2C an d I do have the entire pitot system 100% built=2C hoses=2C tubes=2C fittings and all=2C I could set the entire arrangement on the seat of my truck=2C and go buzzing down the highw ay. I could try a couple of pitot designs and try to get a feel for what might work best in my situation. I think the thing I'm trying to get a good handle on is if the airspeed i ndicator is going to be 'reasonably' accurate on my first time out. I don't expect it to be gnat's ass perfect=2C but then I'd rather it wasn't off by 25 mph=2C either . Maybe taking it for a spin down the highway will give me a little indication of it's app roximate accuracy. (BTW=2C I do realize that when flight testing the plane=2C the important point is to know what the airspeed indicator says for certain flight functions (like stall speed=2C for instance)=2C and learn those readings=2C regardless of how acc urate they are. In other words=2C if the ASI says stall happens at 37 mph=2C then nev er try to fly less than 37 mph.....period!!! Hey=2C thanks for the help=2C guys. I'm going to try to get some 'down t he highway' readings. I'll let you know what I come up with. I also include various s tatic pitot source designs. More later....... Mike Welch ________________________________ Message 19 ____________________________________ Time: 07:05:45 PM PST US From: "John Hauck" Subject: Re: Kolb-List: Pitot static port location When I try to wrap my mind around the objective of getting an "ambient" static air source, I can't picture how having both (two side port fittings and an inside hole in a fitting 'T') would do anything but create an even better balance to having zero pressure. Mike Welch Mike W/Gang: That is why I said you can fine tune the static ports after you fly the airplane by taking a little material off the fore or aft side of the port, depending on whether the ASI is reading high or low, pressure or vacuum. There are also other ways to fine tune the static system. Use your imagination. You are looking for one static source that will read the same air pressure as the pitot tube is flying in. Testing your ASI in your truck will do nothing for the installation in your airplane. If you take a static source inside the cockpit of a MKIII or FS, it will be low pressure. It is the nature of the nose pod flying through the air. What I shared with you is a proven system that worked well for me. john h mkIII hauck's holler Titus, Alabama ________________________________ Message 20 ____________________________________ Time: 07:49:06 PM PST US Subject: Re: Kolb-List: Pitot static port location From: b d Nice drawing of a vulture with whiskers . . . just kidding . . . On Sat, Jan 15, 2011 at 1:05 PM, b young wrote: > > Here's my question; Do any of you have a recommended place on the > nosecone for the static pitot fitting? Or is it okay to locate it ANYWHERE > on the side of the nosecone? The inlet hole for the static air is a drilled > hole about .025 dia. (It is TINY!!!!!, just slightly larger around than a > pin) > > > >>>>>>>>>>>>>> > > sorry about the drawing... this is what i did. > boyd young > mkiii > > ________________________________ Message 21 ____________________________________ Time: 07:59:22 PM PST US Subject: Kolb-List: Re: Kolb/Jabiru carb overflow From: "ces308" Gary, The vent is good...today while waiting for the spring from Frank, I went to the hardware store and bought a spring of the same diameter,but had less tension than the gold spring Pete sent me and it seems to work fine...I will run it wide open tomorrow,but it looks good so far ! 1.5 lbs at idle and 2 at 1400 rpm's. I wish I would have taken a fuel pressure reading at my condition inspection...I also have a fuel pressure sensor coming from GR Tech to keep checking the pressure...Now I will have something to go by... chris ambrose M3X/Jab N327CS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=327164#327164 ________________________________ Message 22 ____________________________________ Time: 08:57:58 PM PST US Subject: Kolb-List: Re: Kolb/Jabiru carb overflow From: "ces308" Jab guys... Also did any of you know about this?? Got this from Lynn Matteson... With all this talk about the float needle, let's remember that there are black-tipped needles (the rubber end is black) and needles with silver, gold, and *black* springs, (or at least a silver, gold, or black colored spring end, which is a code for the strength of the spring within the needle) and make sure you know which one you're referring to. Lynn Matteson Kitfox IV Speedster, taildragger Jabiru 2200, #2062 Sensenich 62"x 55.5 Wood (winter) until the Prince prop arrives Electroair direct-fire ignition system Rotec TBI-40 injection Status: flying...1078+ hrs (since 3-27-2006) As Rosann Rosanna Danna always said," It just goes to show you...It's always something ! " lol And you thought this was a simple engine ! lol chris ambrose Read this topic online here: http://forums.matronics.com/viewtopic.php?p=327169#327169 ________________________________ Message 23 ____________________________________ Time: 09:06:37 PM PST US From: Mike Welch Subject: RE: Kolb-List: Pitot static port location John=2C Okay!! I got the message! I'll proceed as you suggested. Two side ports=2C 1/16" fitting holes=2C adjust as needed. Got it. Thanks=2C Mike W ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kolb-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kolb-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/kolb-list Browse Digests http://www.matronics.com/digest/kolb-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.