KR> mechanical pump or electric pump
Not planning to have a header tank, just a tank in each wing. The back up battery is a good idea too. I'm planning to implement that in my plane. On Sat, Feb 8, 2014 at 4:35 PM, Larry Flesner wrote: > At 09:14 AM 2/8/2014, you wrote: > >> I'm going to opt for a GPASC flywheel drive engine on my >> KR2. So the question is, mechanical pump or electric. I'm thinking >> using >> electric pumps instead of the mechanical for the ability to have a backup >> pump. >> > ++ > > Will you have a header tank with gravity feed? If so, you really only > need an electric pump for backup and perhaps takeoff and landing when head > pressure may be less than optimum. A pressure regulator may be in order > also, depending on the pump selected. > > I have outer wing tanks only, no engine pump on my 0-200 and use two > electric pumps, in parallel, with a pressure regulator set to 4 1/2 pounds. > With that type of setup you really need a backup system. I use a small 4 > AH battery with separate buss, switches, and electrical isolation. I > needed my backup at 10 hours into testing when I lost my main electrical > buss. A simple flip of the switch and the engine never sputtered. I can > pump from either tank with either or both pumps. I can also flip a switch > and charge the backup battery in flight. My setup has served me well for > 500 hours now and saved my bacon when I needed it. > > Further details if desired... > > Larry Flesner > > > ___ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options >
KR> KR group on yahoo
L Paul Visk Belleville Il. 618-406-4705 Paul Visk - KR-2S Aircraft Builder's Log In a message dated 2/8/2014 7:25:17 P.M. Central Standard Time, Tinyauto at aol.com writes: Can you give me an "L"? Kevin Golden Streak Shadow In a message dated 2/8/2014 6:29:05 P.M. Central Standard Time, no1son38 at aol.com writes: http://groups.yahoo.com/group/krIIairpane I started this group on yahoo.comcome post there thanks randy moore ___ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org please see other KRnet info at http://www.krnet.org/info.html see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options ___ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org please see other KRnet info at http://www.krnet.org/info.html se_e http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options _ (http://www.mykitlog.com/PaulVisk/)
KR> KR group on yahoo
Can you give me an "L"? Kevin Golden Streak Shadow In a message dated 2/8/2014 6:29:05 P.M. Central Standard Time, no1son38 at aol.com writes: http://groups.yahoo.com/group/krIIairpane I started this group on yahoo.comcome post there thanks randy moore ___ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org please see other KRnet info at http://www.krnet.org/info.html see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options
KR> KR group on yahoo
http://groups.yahoo.com/group/krIIairpane I started this group on yahoo.comcome post there thanks randy moore
KR> VW mechanical pump or electric pump
I did a little checking and you can't push fuel through the VW mechanical pump so a backup system would entail, at minimum, a couple check valves and an electric pump...a bit more complicated that I care to make it. I see Facet has pumps that will flow through so you can run them in series as a boost pump or backup as Mark did. This might be the way I go. On Sat, Feb 8, 2014 at 10:25 AM, peter wrote: > Why not copy the Piper design with a mechanical (diaphram) and electric in > series? Diaphrams do fail, but only from neglect. I'd use a stock VW pump > and replace it every other year in an excess of caution. Peter > > > > > >All the VW s I've had over the years,> I don't recall ever having one go > bad. I'd like to have a plan b though.> What you all think?One thing to > consider is that when the VW pump does fail due to a diaphragm rupture, > fuel is free to flow into the engine block, and things get ugly immediately > after if you are pushing it with 5 psi! I think that's why you don't see > many stock pumps on aircraft engines. That's why we don't use them on > Corvairs, at least...Mark Langford > > > > ___ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options >
KR> VW mechanical pump or electric pump
How about NO pump? Gravity from header tank only. Though I have used electric pump to feed the header tank-from wing tanks. -Original Message- From: Phillip Hill Sent: Saturday, February 08, 2014 10:14 AM To: KRnet Subject: KR> VW mechanical pump or electric pump Hi guys and gals. I'm going to opt for a GPASC flywheel drive engine on my KR2. So the question is, mechanical pump or electric. I'm thinking using electric pumps instead of the mechanical for the ability to have a backup pump. It will be simpler to implement a backup solution with the electric pump than to work out a bypass for the mechanical. The mechanical pump should be quite sturdy on its own. All the VW s I've had over the years, I don't recall ever having one go bad. I'd like to have a plan b though. What you all think? ___ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org please see other KRnet info at http://www.krnet.org/info.html see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options
KR> VW mechanical pump or electric pump
Why not copy the Piper design with a mechanical (diaphram) and electric in series? Diaphrams do fail, but only from neglect. I'd use a stock VW pump and replace it every other year in an excess of caution. Peter >All the VW s I've had over the years,> I don't recall ever having one go bad. > I'd like to have a plan b though.> What you all think?One thing to consider >is that when the VW pump does fail due to a diaphragm rupture, fuel is free >to flow into the engine block, and things get ugly immediately after if you >are pushing it with 5 psi! I think that's why you don't see many stock pumps >on aircraft engines. That's why we don't use them on Corvairs, at >least...Mark Langford
KR> VW mechanical pump or electric pump
It should not be a problem with the mechanical if fuel can be pumped thru the mechanical if it stops working. The Facet electrical will flow thru. See N64KR at http://KRBuilder.org - Then click on the pics? Peoples Choice at 2013 - KR Gathering in Mt. Vernon, Il ? MVN Best KR at 2013 - KR Gathering in Mt. Vernon, Il ? MVN Best Interior at 2013 - KR Gathering in Mt. Vernon, Il ? MVN Best Paint at 2013 - KR Gathering in Mt. Vernon, Il ? MVN Best Firwwall Forward at 2013 - KR Gathering in Mt. Vernon, Il ? MVN Daniel R. Heath -?Lexington, SC -Original Message- From: KRnet [mailto:krnet-bounces at list.krnet.org] On Behalf Of Phillip Hill Sent: Saturday, February 08, 2014 10:15 AM To: KRnet Subject: KR> VW mechanical pump or electric pump Hi guys and gals. I'm going to opt for a GPASC flywheel drive engine on my KR2. So the question is, mechanical pump or electric. I'm thinking using electric pumps instead of the mechanical for the ability to have a backup pump. It will be simpler to implement a backup solution with the electric pump than to work out a bypass for the mechanical. The mechanical pump should be quite sturdy on its own. All the VW s I've had over the years, I don't recall ever having one go bad. I'd like to have a plan b though. What you all think? ___ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org please see other KRnet info at http://www.krnet.org/info.html see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options
KR> VW mechanical pump or electric pump
Phillip Hill wrote >All the VW s I've had over the years, > I don't recall ever having one go bad. I'd like to have a plan b though. > What you all think? One thing to consider is that when the VW pump does fail due to a diaphragm rupture, fuel is free to flow into the engine block, and things get ugly immediately after if you are pushing it with 5 psi! I think that's why you don't see many stock pumps on aircraft engines. That's why we don't use them on Corvairs, at least... Mark Langford ML at N56ML.com website at http://www.N56ML.com
KR> VW mechanical pump or electric pump
Dan Heath wrote: >>It should not be a problem with the mechanical if fuel can be pumped thru the mechanical if it stops working. The Facet electrical will flow thru.<< There are some Facet pumps that have what Facet calls "positive shutoff" (PSO), which besides being an anti-siphon valve, shuts the fuel off when no power is applied, I'm pretty sure. The 40106 (NPT) and 40108 (flared fitting) that Aircraft Spruce and Wicks sell do not have the antisiphon valve (PSO), but some Facet pumps do. See http://www.facet-purolator.com/cube-fuel-pumps.php for other options, but the two aforementioned pumps will work fine. See more on how I rigged up two of these to be redundant, at http://www.n56ml.com/fuel/, and it works perfectly. If you already have a pump, the part number is stamped on one of the two mounting legs. It took me about 15 years to notice this, so it's not obvious if you aren't really looking hard to find it. Mark Langford ML at N56ML.com website at http://www.N56ML.com
KR> VW mechanical pump or electric pump
Hi guys and gals. I'm going to opt for a GPASC flywheel drive engine on my KR2. So the question is, mechanical pump or electric. I'm thinking using electric pumps instead of the mechanical for the ability to have a backup pump. It will be simpler to implement a backup solution with the electric pump than to work out a bypass for the mechanical. The mechanical pump should be quite sturdy on its own. All the VW s I've had over the years, I don't recall ever having one go bad. I'd like to have a plan b though. What you all think?
