KR> CORRECTION
"...between it and the pushrod location..." /*should read:*/*//* "between it and the cylinder tiedown rod location" Sorry. George --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
KR> Correction on my commemt
Your point in your previous post was important. ?The KR becomes a much easier plane to land with deployable drag, whether it's a belly board or flaps. ?You spend a lot less time over the runway transitionsing from flying to rolling. I flew my KR 500 hours without flaps, and now have another 500 hours on it since I added flaps. ?Much like Ken Rand said, I never really understood how badly this plane needed flaps (deployable drag) until I added them to it. ?FWIW, my flaps reduce the stall speed by 3 kts IAS. ?It's not a huge amount, but is easy to build into the plane. ?Photos of the process of adding flaps to my plane are on my web site at <http://jeffsplanes.com>. Others have chosen to build belly boards as deployable drag, probably for ease of construction for retrofiting. ?But I don't think you'll find anyone that has added any form of deployable drag to their KR that will tell you the plane didn't need it. -Jeff Scott Los Alamos, NM > - Original Message - > From: Doran Jaffas > Sent: 12/03/13 06:58 AM > To: krnet at list.krnet.org > Subject: KR> Correction on my commemt > > I mis spoke regarding stall speeds . Of course the belly flap does not > reduce the stall speed. It assists in slowing the aircraft ONLY. The dims. > will determine the drag and ability to slow down. When adding this to any > clean aircraft PLEASE USE CAUTION . > ?N186RC > ___
KR> Correction on my commemt
I mis spoke regarding stall speeds . Of course the belly flap does not reduce the stall speed. It assists in slowing the aircraft ONLY. The dims. will determine the drag and ability to slow down. When adding this to any clean aircraft PLEASE USE CAUTION . N186RC
KR> correction of my order
I need a large size shirt my order was confusing when I read it. When I said any extra large shirts, I meant any leftover large shirts.
KR> Correction
> I had an interesting landing experience at an airport called Big Bear (L35) a couple weeks ago. Don't know why I said "landing." It was an interesting "takeoff" experience. Mike KSEE HR Certificate Online SHRM Approved Human resources Certificate Program. Learn More Now! http://thirdpartyoffers.juno.com/TGL3141/4c703dc8d7e4612eddbm04vuc
KR>Correction
Glenn Martin wrote: >> >> > Lift is a function greatly determined by the shape of the wing, and its > angle of incidence. oops..I meant to say Angle of ATTACK rather than INCIDENCE. -- Glenn Martin Owner Martek Mississippi 13238 Hudson-Krohn Rd Biloxi, MS, 39532 rep...@martekmississippi.com -- Glenn Martin Owner Martek Mississippi 13238 Hudson-Krohn Rd Biloxi, MS, 39532 rep...@martekmississippi.com
KR> CORRECTION
Glenn Martin wrote: >> >> > Lift is a function greatly determined by the shape of the wing, and its > angle of incidence. oops..I meant to say Angle of ATTACK rather than INCIDENCE. -- Glenn Martin Owner Martek Mississippi 13238 Hudson-Krohn Rd Biloxi, MS, 39532 rep...@martekmississippi.com
KR> correction
"while allowing the ground to travel to the coil" Should read: while allowing the ground to travel to the tach. Also the y line is one line, split to both coils, and the diode placed in each line running to the ground side of the coil. This prevents the cross feeding of the ground signal and the possibility of the tach grounding out the coil due to tach failure. Colin Rainey Independent Loan Officer Branch 2375 Apex Mortgage Company 386.615.3388 Home Office 407.739.0834 Cell 407.557.3260 Fax brokerpi...@bellsouth.net
KR> Correction on Crank
I had a lot of problems at one time with the engine going very rich at mid range power settings. It was fine at high power and idle. When I reduced power sometimes it would foul a plug and give a pretty good vibration. Brian Kraut Engineering Alternatives, Inc. www.engalt.com -Original Message- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On Behalf Of Steve Glover Sent: Thursday, April 14, 2005 10:18 PM To: KRnet Subject: KR> Correction on Crank Hi Netter's, Well, It appears I had spoken too soon. All initial indications pointed to a broken crank on the VW. We pulled the engine down and did not see anything unusual. I took the crank over to a well known machine shop in the area and had it magnafluxed and dye glowed. Zip, zilch, nada No cracks anywhere. Now we are at a total loss for any explanation of the vibration. We will recheck the prop for balance but I think it was too severe of vibration for that. Besides, once it was repaired, refinished, and balanced, it ran really smooth. I apologize for the false info. Now I have no idea what could have caused the problem. Both ignitions were checked with the same results on both. The heads and valves looked fine after disassembly. Carb functioned properly as far as acceleration. I am using a Revflow which has not given me any trouble in 200 hours. If anyone has any ides, I'm listening. We are putting the engine back together and I will fly it until the Corvair is ready. Hopefully whatever the anomaly was, with the rebuild (Again), it will be gone. Steve Glover KR-2 N902G AJO, Ca ___ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
KR> Correction on Crank
You have probably already done this, but be sure you are firing on all four cylinders. Start the engine and use a spray bottle on each exhaust header to be sure they are all firing. I assume it vibrates cold also? I have heard of valves sticking when the engine heats up. Brian Kraut Engineering Alternatives, Inc. www.engalt.com -Original Message- From: krnet-bounces+brian.kraut=engalt@mylist.net [mailto:krnet-bounces+brian.kraut=engalt@mylist.net]On Behalf Of Steve Glover Sent: Friday, April 15, 2005 8:39 PM To: KRnet Subject: RE: KR> Correction on Crank Did you have the camshaft magnafluxed also? Make sure the camgear is still properly affixed to the end of the cam. Rings, pistons and rods OK? Were the heads and head studs torqued and all came apart with no looseness? -- We didn't magnaflux the cam but the gear is tight. All other components checked out ok. The heads were just rebuilt about 20 hours ago. The torque settings appeared ok upon disassembly. Steve Glover KR-2 N902G AJO, Ca ___ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
KR> Correction on Crank
>I had a lot of problems at one time with the engine going very rich at mid >range power settings. It was fine at high power and idle. When I reduced >power sometimes it would foul a plug and give a pretty good vibration. It hasn't done that for the 200 hrs I've flown it. The needle I have in the carb was custom made. It isn't the straight, flat one that Revmaster provides. >You have probably already done this, but be sure you are firing on all four >cylinders. Start the engine and use a spray bottle on each exhaust header >to be sure they are all firing. I assume it vibrates cold also? I have >heard of valves sticking when the engine heats up. I checked it on both ignitions and it was the same on each. Hot or cold, didn't matter. I should have everything back together this weekend with a the prop refinished and balanced (again). I guess we'll see... Steve Glover KR-2 N902G AJO, Ca
KR> Correction on Crank
Hi Netter's, Well, It appears I had spoken too soon. All initial indications pointed to a broken crank on the VW. We pulled the engine down and did not see anything unusual. I took the crank over to a well known machine shop in the area and had it magnafluxed and dye glowed. Zip, zilch, nada No cracks anywhere. Now we are at a total loss for any explanation of the vibration. We will recheck the prop for balance but I think it was too severe of vibration for that. Besides, once it was repaired, refinished, and balanced, it ran really smooth. I apologize for the false info. Now I have no idea what could have caused the problem. Both ignitions were checked with the same results on both. The heads and valves looked fine after disassembly. Carb functioned properly as far as acceleration. I am using a Revflow which has not given me any trouble in 200 hours. If anyone has any ides, I'm listening. We are putting the engine back together and I will fly it until the Corvair is ready. Hopefully whatever the anomaly was, with the rebuild (Again), it will be gone. Steve Glover KR-2 N902G AJO, Ca
KR> Correction on Crank/rough engine
If anyone has any ides, I'm listening. We are >putting the engine back together and I will fly it until the Corvair is >ready. Hopefully whatever the anomaly was, with the rebuild (Again), it >will be gone. >Steve Glover + I'm not much of an engine mechanic but I'm amazed how rough and engine can seem with a single cylinder randomly missing. I once flew a C172 ( 6 cylinder) that would randomly miss and it felt like the entire airframe was shaking. It turned out to be a single plug wire (one of 12). >From there I'd make a giant leap and say check ignition. Wires, plugs for fouling, distributor, coil, etc... Larry Flesner
KR> Correction on Crank/rough engine
Cross firing of spark plugs can cause an engine bad vibration too. I once seen a Case magneto (a tractor company that made aviation parts) that had carbon tracking in the distributor block which allowed a wrong plug to fire at the wrong time. Brant Hollensbe bhollen...@mchsi.com
KR> Correction on Crank/rough engine
>From there I'd make a giant leap and say check ignition. Wires, plugs for fouling, distributor, coil, etc... I would lean toward ignition but it was occurring on both the electronic and the mag. Two separate sets of wires and systems. None of the valves appeared to be sticking and all cylinders were burning equally. Steve Glover KR-2 N902G AJO, Ca
KR> Correction on Crank
Hello Steve >From my experience I can only offer three possibilities. My first experience with engine vibration was from a spinner that was about to depart the engine by way of taking a chunk out of my prop. After it departed the engine returned to smooth. It was very violent. Second, was the cracked blades in the IVO prop. The vibration from that was more settle. One could even question if it really happened. I reduced speed and the vibration went away. Third, was a loose trim tab. With the loose tab, the vibration was in the stick as opposed to the airframe. It started slowly and became more pronounced as the structure of the tab deteriorated. Had I continued to fly the tab would have departed the aircraft. Hope this info helps. Orma Southfield, MI N110LR Tweety, old enough to drink this year Flying and more flying, to the gathering or bust http://www.kr-2.aviation-mechanics.com/
KR> Correction on Crank
Hello Steve >From my experience I can only offer three possibilities. My first experience with engine vibration was from a spinner that was about to depart the engine by way of taking a chunk out of my prop. After it departed the engine returned to smooth. It was very violent. Second, was the cracked blades in the IVO prop. The vibration from that was more settle. One could even question if it really happened. I reduced speed and the vibration went away. Third, was a loose trim tab. With the loose tab, the vibration was in the stick as opposed to the airframe. It started slowly and became more pronounced as the structure of the tab deteriorated. Had I continued to fly the tab would have departed the aircraft. Hope this info helps. - The spinner is fine, as well as the prop. The vibration occurs both in the air and on the ground so that rules out control surfaces. I have never had ice on the Revflow. The vibration began gradually and and continued to increase. I'm going to check the balance on the prop again this weekend. Work has me too busy this week, unfortunately. Richard said that maybe as the aerosols evaporated in the finish, (I put a pretty good coat of finish on this time), the prop became out of balance again. Also, there still might have been moisture in the prop from the flood. It didn't appear so, but who knows? Steve Glover KR-2 N902G AJO, Ca
KR> Correction on Crank
Steve: just a thought but it happened to me. the end of a rocker arm snapped off and it was so small that I didn't see it until I was putting it back on the angine after a complete rebuild and very fruatrated that I couldn't find anything wrong. new rocker arm-it worked great. Russ Breckenridge,MN - Original Message - From: "Steve Glover" To: "KRnet" Sent: Thursday, April 14, 2005 7:17 PM Subject: KR> Correction on Crank > Hi Netter's, > > Well, It appears I had spoken too soon. All initial indications pointed to > a broken crank on the VW. We pulled the engine down and did not see > anything unusual. I took the crank over to a well known machine shop in the > area and had it magnafluxed and dye glowed. Zip, zilch, nada No cracks > anywhere. Now we are at a total loss for any explanation of the vibration. > We will recheck the prop for balance but I think it was too severe of > vibration for that. Besides, once it was repaired, refinished, and > balanced, it ran really smooth. > > I apologize for the false info. Now I have no idea what could have caused > the problem. Both ignitions were checked with the same results on both. > The heads and valves looked fine after disassembly. Carb functioned properly > as far as acceleration. I am using a Revflow which has not given me any > trouble in 200 hours. If anyone has any ides, I'm listening. We are > putting the engine back together and I will fly it until the Corvair is > ready. Hopefully whatever the anomaly was, with the rebuild (Again), it > will be gone. > > Steve Glover > KR-2 N902G > AJO, Ca > > > > > ___ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
KR> Correction on Crank
Thanks Russ, I'll check that... Steve -Original Message- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On Behalf Of Russ Fenlason Sent: Friday, April 15, 2005 2:07 PM To: KRnet Subject: Re: KR> Correction on Crank Steve: just a thought but it happened to me. the end of a rocker arm snapped off and it was so small that I didn't see it until I was putting it back on the angine after a complete rebuild and very fruatrated that I couldn't find anything wrong. new rocker arm-it worked great. Russ Breckenridge,MN - Original Message - From: "Steve Glover" To: "KRnet" Sent: Thursday, April 14, 2005 7:17 PM Subject: KR> Correction on Crank > Hi Netter's, > > Well, It appears I had spoken too soon. All initial indications pointed to > a broken crank on the VW. We pulled the engine down and did not see > anything unusual. I took the crank over to a well known machine shop in the > area and had it magnafluxed and dye glowed. Zip, zilch, nada No cracks > anywhere. Now we are at a total loss for any explanation of the vibration. > We will recheck the prop for balance but I think it was too severe of > vibration for that. Besides, once it was repaired, refinished, and > balanced, it ran really smooth. > > I apologize for the false info. Now I have no idea what could have caused > the problem. Both ignitions were checked with the same results on both. > The heads and valves looked fine after disassembly. Carb functioned properly > as far as acceleration. I am using a Revflow which has not given me any > trouble in 200 hours. If anyone has any ides, I'm listening. We are > putting the engine back together and I will fly it until the Corvair is > ready. Hopefully whatever the anomaly was, with the rebuild (Again), it > will be gone. > > Steve Glover > KR-2 N902G > AJO, Ca > > > > > ___ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > ___ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
KR> Correction on Crank
Just a shot in the dark here but is your engine mount and its attachment to the firewall as well as to the motor secure? Regards Dene Collett South Africa KR2SRT builder mailto: dene.coll...@telkomsa.net www.whisperaircraft.co.za - Original Message - From: Steve Glover To: KRnet Sent: Friday, April 15, 2005 4:29 PM Subject: RE: KR> Correction on Crank
KR> Correction on Crank
Cracked flywheel maybe??
KR> Correction on Crank
Just a shot in the dark here but is your engine mount and its attachment to the firewall as well as to the motor secure? I'm going to double check that tomorrow... Steve
KR> Correction on Crank
Cracked flywheel maybe?? _ Nope, looked at that already... Steve
KR> Correction on Crank
Steve, Did you have the camshaft magnafluxed also? Make sure the camgear is still properly affixed to the end of the cam. Rings, pistons and rods OK? Were the heads and head studs torqued and all came apart with no looseness? Also check the valve & valve guides for proper clearance--Not just a visual inspection. You also may want to check the valve springs. When I raced Formula Vee's, we torqued the case and head nuts between rounds, and we also checked and adjusted the valve lash. Just make absolutely sure when you re-assemble this engine that every part has the right clearance and meets specs. Good luck and take your time. Steve Glover wrote: Well, It appears I had spoken too soon. All initial indications pointed to a broken crank on the VW. We pulled the engine down and did not see anything unusual. I took the crank over to a well known machine shop in the area and had it magnafluxed and dye glowed. Zip, zilch, nada No cracks anywhere. Now we are at a total loss for any explanation of the vibration. We will recheck the prop for balance but I think it was too severe of vibration for that. Besides, once it was repaired, refinished, and balanced, it ran really smooth. Now I have no idea what could have caused the problem. Scott Cable KR-2S # 735 Wright City, MO s2cab...@yahoo.com - Do you Yahoo!? Make Yahoo! your home page
KR> Correction on Crank
Did you have the camshaft magnafluxed also? Make sure the camgear is still properly affixed to the end of the cam. Rings, pistons and rods OK? Were the heads and head studs torqued and all came apart with no looseness? -- We didn't magnaflux the cam but the gear is tight. All other components checked out ok. The heads were just rebuilt about 20 hours ago. The torque settings appeared ok upon disassembly. Steve Glover KR-2 N902G AJO, Ca
KR> Correction on Crank
Hi Steve Have read the posts about possible causes to the vibration on your engine. I would like to do a bit of speculation and make some suggestions if I may. Must stress that I do not have any experience with airplane component balancing but do have lots of industrial experience on especially things like fans and other rotors. If no obvious defects in the engine can be found please check the prop flange and bolts. Have a mag-particle test (or any other NDT) done on the hub/flange. Special attention to the key-way if you have one. It is usually the first place to fail under load but has the uncanny way of closing up again as soon as the load is removed. Can be checked using a strobe with the engine running without the spinner and cowl in place so as to see the actual prop-hub in motion. Not sure about your setup, N/A if you have a taper mount on the crank, as it would have departed long ago if that was the case! Do you have a retaining bolt for the flange at the front of the crank? You would possibly have seen fretting and/or wear on the crank under the hub/flange if it was loose! Did you remove the prop-flange? I take it there were no indications on the flange, bolts and/or prop of chafing, indicating looseness?! Is the prop a plain laminated wood with a clear see-through finish or has it got some kind of reinforcing cover that can not be seen through? The reason asking is that there could be a lamination problem that also only shows under load. I suggest that you borrow a prop that is known to run smoothly and install it on your plane if the roughness continues after the engine rebuild and all other things have been checked. Please do all the testing on the ground and don't go flying until 100% sure that all is ok. Would hate not to see the interesting flight reports any more!! Best regards and good-luck with the fault finding. Wanna-bee Ivan Miller - Original Message - From: "Steve Glover" To: "KRnet" Sent: Friday, April 15, 2005 4:17 AM Subject: KR> Correction on Crank > Hi Netter's, > > Well, It appears I had spoken too soon. All initial indications pointed to > a broken crank on the VW. We pulled the engine down and did not see > anything unusual. I took the crank over to a well known machine shop in the > area and had it magnafluxed and dye glowed. Zip, zilch, nada No cracks > anywhere. Now we are at a total loss for any explanation of the vibration. > We will recheck the prop for balance but I think it was too severe of > vibration for that. Besides, once it was repaired, refinished, and > balanced, it ran really smooth. > > I apologize for the false info. Now I have no idea what could have caused > the problem. Both ignitions were checked with the same results on both. > The heads and valves looked fine after disassembly. Carb functioned properly > as far as acceleration. I am using a Revflow which has not given me any > trouble in 200 hours. If anyone has any ides, I'm listening. We are > putting the engine back together and I will fly it until the Corvair is > ready. Hopefully whatever the anomaly was, with the rebuild (Again), it > will be gone. > > Steve Glover > KR-2 N902G > AJO, Ca > > > > > ___ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html
KR> Correction on Crank
If no obvious defects in the engine can be found please check the prop flange and bolts. -- We didn't mag the hub but the runout was only .002 on the bench. On the plane is was more like .009, which is what led us to believe the crank was bk. I just don't think we had a good read on the plane. I am starting to think it may be a prop problem. I am hoping to know more tomorrow. Steve Glover KR-2 N902G AJO, Ca
