Original Posted By: jkahn(at)picasso.dehavilland.ca (John Kahn)
I have just finished the installation of the eyebrows on my A-65 and nowI wonder If they are really nessary.I looked at some planes and some have em and some don't.Kevin M.,- I noticed that you are running without them. Any tempproblems? Do you have a CGT or just OT.Stevee.________________________________________________________________________________
Pietenpol-List: Cont/Lyc users: eyebrows
Pietenpol-List: Re: Cont/Lyc users: eyebrows
Original Posted By: Kevin McDonald
Put them on Steve.They are necessary to force the air between the cylinders and downthe back. The cylinders need high velocity air forced through the finsby tight baffling to cool properly in the areas that don't get a directblast of air from the front. Those areas will run hot if you leave the eyebrows out. There are people doing it, but it's bad for the cylinders in the long run. Sooner or later you will get cracks.John K________________________________________________________________________________
Put them on Steve.They are necessary to force the air between the cylinders and downthe back. The cylinders need high velocity air forced through the finsby tight baffling to cool properly in the areas that don't get a directblast of air from the front. Those areas will run hot if you leave the eyebrows out. There are people doing it, but it's bad for the cylinders in the long run. Sooner or later you will get cracks.John K________________________________________________________________________________
Pietenpol-List: Re: Cont/Lyc users: eyebrows
Original Posted By: Ted Brousseau
Steve Eldredge wrote:> > I have just finished the installation of the eyebrows on my A-65 and now> I wonder If they are really nessary.> > I looked at some planes and some have em and some don't.> > Kevin M.,- I noticed that you are running without them. Any temp> problems? Do you have a CGT or just OT.> > Stevee.The eyebrows are a must on the 65 cont . In addition ,dont forget thelittle baffles that go between the cylinders. Also, always putneverseeze onyour plug threads. The bottom rear plugs are the first tooverheat and freeze in the cylinder. When this happens and you try toremove the plug, the insert will break loose from the cylinder and thenit gets expensive. the cylinder then must be rebuilt. The continentalhas a small pin seated alongside the plug insert and you can not justreplace the insert with an off the shelf helicoil. I know some fellowsthat just screw the insert back in with the plug that it is frozen tobut I think this is only something that might be O K in an emergencybut should be done right as soon as possible.I just had the two rearjugs rebuilt on my continental A80 as the fellow that owned the planebefore me failed to use baffles and heat nor any chemical would get theplugs out .When I broke them loose the inserts came with the plugs andit got real expensive after that .CHT s are OK if they are working andput on correctly But proper baffls are the answer . Ernie Hagness________________________________________________________________________________
Steve Eldredge wrote:> > I have just finished the installation of the eyebrows on my A-65 and now> I wonder If they are really nessary.> > I looked at some planes and some have em and some don't.> > Kevin M.,- I noticed that you are running without them. Any temp> problems? Do you have a CGT or just OT.> > Stevee.The eyebrows are a must on the 65 cont . In addition ,dont forget thelittle baffles that go between the cylinders. Also, always putneverseeze onyour plug threads. The bottom rear plugs are the first tooverheat and freeze in the cylinder. When this happens and you try toremove the plug, the insert will break loose from the cylinder and thenit gets expensive. the cylinder then must be rebuilt. The continentalhas a small pin seated alongside the plug insert and you can not justreplace the insert with an off the shelf helicoil. I know some fellowsthat just screw the insert back in with the plug that it is frozen tobut I think this is only something that might be O K in an emergencybut should be done right as soon as possible.I just had the two rearjugs rebuilt on my continental A80 as the fellow that owned the planebefore me failed to use baffles and heat nor any chemical would get theplugs out .When I broke them loose the inserts came with the plugs andit got real expensive after that .CHT s are OK if they are working andput on correctly But proper baffls are the answer . Ernie Hagness________________________________________________________________________________
Pietenpol-List: Re: Cont/Lyc users: eyebrows
Original Posted By: jimvan1(at)juno.com
ernest l. hagness wrote:> The eyebrows are a must on the 65 cont . In addition ,dont forget the> little baffles that go between the cylinders. Also, always put> neverseeze onyour plug threads.Ernest,Can I just find neverseize off the shelf somewhere or is it a AS&Sitem. Also I am aware of a little quarter bend turn baffle inside theeyebrow for the rear most cylinders directing air at the base of thejug. Is this what you are referring to? Is there anymore that I needto be aware of. What about around the bottom of the jugs, anythinghere? (I seem to remember that there isn't, but hey...)Stevee________________________________________________________________________________
ernest l. hagness wrote:> The eyebrows are a must on the 65 cont . In addition ,dont forget the> little baffles that go between the cylinders. Also, always put> neverseeze onyour plug threads.Ernest,Can I just find neverseize off the shelf somewhere or is it a AS&Sitem. Also I am aware of a little quarter bend turn baffle inside theeyebrow for the rear most cylinders directing air at the base of thejug. Is this what you are referring to? Is there anymore that I needto be aware of. What about around the bottom of the jugs, anythinghere? (I seem to remember that there isn't, but hey...)Stevee________________________________________________________________________________
Pietenpol-List: Re: Cont/Lyc users: eyebrows
Original Posted By: "ernest l. hagness"
Steve Eldredge wrote:> > ernest l. hagness wrote:> > > The eyebrows are a must on the 65 cont . In addition ,dont forget the> > little baffles that go between the cylinders. Also, always put> > neverseeze onyour plug threads.> > Ernest,> > Can I just find neverseize off the shelf somewhere or is it a AS&S> item. Also I am aware of a little quarter bend turn baffle inside the> eyebrow for the rear most cylinders directing air at the base of the> jug. Is this what you are referring to? Is there anymore that I need> to be aware of. What about around the bottom of the jugs, anything> here? (I seem to remember that there isn't, but hey...)> > SteveeStevee , Never seeze is available at most auto parts stores and thesmall bottle of gray stuff goes a long way so dont buy the large economysize. The small baffles that I am refering to go inbetween the cylindersand run parralel to the case. They can be easily made from small flatpieces of 24 Ga. 2024T3 aluminum . Go to the airport and ask one of thebolt twisters if you can borrow one for a pattern and just make a paperpattern and cut it out and transfer it to the aluminum. Real easy tomake and put in but well worth the effort. also see if you can find abird with a small continental engine and take a look under the eyebrowsand you will see how to put them in. One peek at the real thing is wortha thousand words. Good luck. Ernie.________________________________________________________________________________
Steve Eldredge wrote:> > ernest l. hagness wrote:> > > The eyebrows are a must on the 65 cont . In addition ,dont forget the> > little baffles that go between the cylinders. Also, always put> > neverseeze onyour plug threads.> > Ernest,> > Can I just find neverseize off the shelf somewhere or is it a AS&S> item. Also I am aware of a little quarter bend turn baffle inside the> eyebrow for the rear most cylinders directing air at the base of the> jug. Is this what you are referring to? Is there anymore that I need> to be aware of. What about around the bottom of the jugs, anything> here? (I seem to remember that there isn't, but hey...)> > SteveeStevee , Never seeze is available at most auto parts stores and thesmall bottle of gray stuff goes a long way so dont buy the large economysize. The small baffles that I am refering to go inbetween the cylindersand run parralel to the case. They can be easily made from small flatpieces of 24 Ga. 2024T3 aluminum . Go to the airport and ask one of thebolt twisters if you can borrow one for a pattern and just make a paperpattern and cut it out and transfer it to the aluminum. Real easy tomake and put in but well worth the effort. also see if you can find abird with a small continental engine and take a look under the eyebrowsand you will see how to put them in. One peek at the real thing is wortha thousand words. Good luck. Ernie.________________________________________________________________________________
Pietenpol-List: eyebrows
Original Posted By: shad bell
I am wondering what you that have made air scoops for the Corvair used and howyou shaped the front edge of them. I would like to have either a beaded edge orsomething to stiffen it.anyway any tips or pictures would be helpful.RaymondRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Fri, 10 Jul 2009 19:20:12 -0700 (PDT)
I am wondering what you that have made air scoops for the Corvair used and howyou shaped the front edge of them. I would like to have either a beaded edge orsomething to stiffen it.anyway any tips or pictures would be helpful.RaymondRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Fri, 10 Jul 2009 19:20:12 -0700 (PDT)
Re: Pietenpol-List: eyebrows
Original Posted By: hvandervoo(at)aol.com
Carson,Maybe these are the photos you were looking for:http://www.mykitplane.com/Planes/photoG ... ID=342Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: eyebrowsDate: Sat, 11 Jul 2009 08:50:38 -0400
Carson,Maybe these are the photos you were looking for:http://www.mykitplane.com/Planes/photoG ... ID=342Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: eyebrowsDate: Sat, 11 Jul 2009 08:50:38 -0400