---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Mon 09/14/09: 20 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:58 AM - Engine Hesitation (rveighta@comcast.net) 2. 06:59 AM - Re: Engine Hesitation (Kelly McMullen) 3. 07:16 AM - Re: Engine Hesitation (Ralph E. Capen) 4. 07:21 AM - Re: Engine Hesitation (Mike Robertson) 5. 08:39 AM - Denver area Hangar Space for Rent (L Klingmuller) 6. 09:44 AM - Re: Engine Hesitation (RICHARD MILLER) 7. 01:15 PM - Re: Engine Hesitation (rveighta@comcast.net) 8. 01:44 PM - Re: Engine Hesitation (rveighta@comcast.net) 9. 02:54 PM - Re: Engine Hesitation (Mike Robertson) 10. 03:17 PM - Re: Engine Hesitation (Neal George) 11. 03:44 PM - Re: Engine Hesitation (Vincent Welch) 12. 04:40 PM - Re: Engine Hesitation (Richard McBride) 13. 05:00 PM - Re: Engine Hesitation (rveighta@comcast.net) 14. 05:34 PM - Re: Waterproofing RV-4's (Paul Besing) 15. 06:59 PM - Re: Engine Hesitation (Vincent Welch) 16. 06:59 PM - Re: Engine Hesitation (Vincent Welch) 17. 07:01 PM - Initial Baffle-To-Top-Cowling Fit... (Matt Dralle) 18. 07:22 PM - Re: Engine Hesitation (Bruce Gray) 19. 08:13 PM - Re: Engine Hesitation (Garry) 20. 08:52 PM - Re: Waterproofing RV-4's (Jeff Bertsch) ________________________________ Message 1 _____________________________________ Time: 05:58:41 AM PST US From: rveighta@comcast.net Subject: RV-List: Engine Hesitation I have a Lycoming IO-360 in my RV8A which=C2- exhibits an engine hesitanc y or "stumble" that is proving very difficult to diagnose. This problem shows up when taxiing back in after a flight, and in an RPM ra nge of 750-1300. In flight there is no evidence of a stumble, and no stumble at initial start up, taxiing out for take off or during run- up. In other words, the engine only exhibits this behavior when it is warm. I have talked to some very knowledgable folks and have tried several things : (1) Reset the idle mixture, (2) removed and cleaned the servo finger screen, (3) removed the nozzles and placed them in a cup of ac etone, which was then placed in a sonic cleaner for about an hour. After the nozzles were reinstalled, I test flew the plane and the stumble was gone. However, a subsequent test flight revealed that although the engine was running much smoother, an occasional stumble w as still there. Additional facts: Oil temps are normal (around 180 deg F) Compression test is normal (all cylinders mid 70's) I'm using a Catto 3 blade prop Any and all suggestions you may have will be greatly appreciated. Thanks, Walt Shipley ________________________________ Message 2 _____________________________________ Time: 06:59:29 AM PST US From: Kelly McMullen Subject: Re: RV-List: Engine Hesitation This type of troubleshooting forces you back to basics. Air, spark, fuel in right proportions at right time. When the engine is hot, vapor bubbles in fuel lines are possible. Tight valve stem to guide clearance(minor valve sticking) is possible. Coil faults can show up with heat. Stumbles are usually a mixture problem, but you don't say if it happens with or without throttle movement. You don't say what time is on the engine. My guess is either some fuel boiling in the injector lines or a valve sticking, preventing sufficient mixture getting into the cylinder. Have you done a SB188 valve wobble check? Spark problems are less likely to be at low power and intermittent. rveighta@comcast.net wrote: > I have a Lycoming IO-360 in my RV8A which exhibits an engine hesitancy > or "stumble" that is proving very difficult to diagnose. > > This problem shows up when taxiing back in after a flight, and in an RPM > range of 750-1300. In flight there is no evidence of a stumble, > > and no stumble at initial start up, taxiing out for take off or during > run-up. In other words, the engine only exhibits this behavior when it > > is warm. > > > > I have talked to some very knowledgable folks and have tried several > things: (1) Reset the idle mixture, (2) removed and cleaned the > > servo finger screen, (3) removed the nozzles and placed them in a cup of > acetone, which was then placed in a sonic cleaner for about > > an hour. After the nozzles were reinstalled, I test flew the plane and > the stumble was gone. However, a subsequent test flight revealed > > that although the engine was running much smoother, an occasional > stumble was still there. > > > > Additional facts: > > > > Oil temps are normal (around 180 deg F) > > Compression test is normal (all cylinders mid 70's) > > I'm using a Catto 3 blade prop > > > > Any and all suggestions you may have will be greatly appreciated. > > > > Thanks, > > > > Walt Shipley > > * > > > * ________________________________ Message 3 _____________________________________ Time: 07:16:47 AM PST US From: "Ralph E. Capen" Subject: Re: RV-List: Engine Hesitation Sounds like you may have a minor case of Vapor-Lock. Like others, increasing the fuel flow makes it go away. Have you tried running your boost pump to see if that helps? There's been some discussion about this in the archives. -----Original Message----- >From: rveighta@comcast.net >Sent: Sep 14, 2009 8:56 AM >To: rv-list@matronics.com >Subject: RV-List: Engine Hesitation > > >I have a Lycoming IO-360 in my RV8A which exhibits an engine hesitancy or "stumble" that is proving very difficult to diagnose. > >This problem shows up when taxiing back in after a flight, and in an RPM range of 750-1300. In flight there is no evidence of a stumble, > >and no stumble at initial start up, taxiing out for take off or during run-up. In other words, the engine only exhibits this behavior when it > >is warm. > > >I have talked to some very knowledgable folks and have tried several things: (1) Reset the idle mixture, (2) removed and cleaned the > >servo finger screen, (3) removed the nozzles and placed them in a cup of acetone, which was then placed in a sonic cleaner for about > >an hour. After the nozzles were reinstalled, I test flew the plane and the stumble was gone. However, a subsequent test flight revealed > >that although the engine was running much smoother, an occasional stumble was still there. > > >Additional facts: > > >Oil temps are normal (around 180 deg F) > >Compression test is normal (all cylinders mid 70's) > >I'm using a Catto 3 blade prop > > >Any and all suggestions you may have will be greatly appreciated. > > >Thanks, > > >Walt Shipley ________________________________ Message 4 _____________________________________ Time: 07:21:48 AM PST US From: Mike Robertson Subject: RE: RV-List: Engine Hesitation Walt=2C have you tried checking for an intake leak. It can cause exactly what you are talking about. Mike Robertson From: rveighta@comcast.net Subject: RV-List: Engine Hesitation I have a Lycoming IO-360 in my RV8A which exhibits an engine hesitancy or "stumble" that is proving very difficult to diagnose. This problem shows up when taxiing back in after a flight=2C and in an RPM range of 750-1300. In flight there is no evidence of a stumble=2C and no stumble at initial start up=2C taxiing out for take off or during ru n-up. In other words=2C the engine only exhibits this behavior when it is warm. I have talked to some very knowledgable folks and have tried several things : (1) Reset the idle mixture=2C (2) removed and cleaned the servo finger screen=2C (3) removed the nozzles and placed them in a cup of acetone=2C which was then placed in a sonic cleaner for about an hour. After the nozzles were reinstalled=2C I test flew the plane and th e stumble was gone. However=2C a subsequent test flight revealed that although the engine was running much smoother=2C an occasional stumble was still there. Additional facts: Oil temps are normal (around 180 deg F) Compression test is normal (all cylinders mid 70's) I'm using a Catto 3 blade prop Any and all suggestions you may have will be greatly appreciated. Thanks=2C Walt Shipley 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D _________________________________________________________________ Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. ________________________________ Message 5 _____________________________________ Time: 08:39:10 AM PST US Subject: RV-List: Denver area Hangar Space for Rent From: L Klingmuller I have a very nice hangar space for rent at Front Range Airport (FTG). It is ideal for a second RV or similar plane. FTG is a user-friendly AO whic h has low gas prices and no waiting for taxing or takeoffs. Please give me a call at (303) 984-4469. Lothar Klingmuller, RV-6A ' 850 hrs. ________________________________ Message 6 _____________________________________ Time: 09:44:21 AM PST US From: RICHARD MILLER Subject: Re: RV-List: Engine Hesitation walt kelly is right. a little more info is needed . you need to do 97-3 from start to finish to check the fuel system. pressures are critical. what are your chts. rick --- On Mon, 9/14/09, Kelly McMullen wrote: > From: Kelly McMullen > Subject: Re: RV-List: Engine Hesitation > To: rv-list@matronics.com > Date: Monday, September 14, 2009, 6:57 AM > Kelly McMullen > > This type of troubleshooting forces you back to basics. > Air, spark, fuel in right proportions at right time. When > the engine is hot, vapor bubbles in fuel lines are possible. > Tight valve stem to guide clearance(minor valve sticking) is > possible. Coil faults can show up with heat. > Stumbles are usually a mixture problem, but you don't say > if it happens with or without throttle movement. You don't > say what time is on the engine. My guess is either some fuel > boiling in the injector lines or a valve sticking, > preventing sufficient mixture getting into the cylinder. > Have you done a SB188 valve wobble check? Spark problems are > less likely to be at low power and intermittent. > > rveighta@comcast.net > wrote: > > I have a Lycoming IO-360 in my RV8A which > exhibits an engine hesitancy or "stumble" that is proving > very difficult to diagnose. > > > > This problem shows up when taxiing back in after a > flight, and in an RPM range of 750-1300. In flight there is > no evidence of a stumble, > > > > and no stumble at initial start up, taxiing out for > take off or during run-up. In other words, the engine only > exhibits this behavior when it > > > > is warm. > > > > > > I have talked to some very knowledgable folks and have > tried several things: (1) Reset the idle mixture, (2) > removed and cleaned the > > > > servo finger screen, (3) removed the nozzles and > placed them in a cup of acetone, which was then placed in a > sonic cleaner for about > > > > an hour. After the nozzles were reinstalled, I test > flew the plane and the stumble was gone. However, a > subsequent test flight revealed > > > > that although the engine was running much smoother, an > occasional stumble was still there. > > > > > > Additional facts: > > > > > > Oil temps are normal (around 180 deg F) > > > > Compression test is normal (all cylinders mid 70's) > > > > I'm using a Catto 3 blade prop > > > > > > Any and all suggestions you may have will be greatly > appreciated. > > > > > > Thanks, > > > > > > Walt Shipley > > > > * > > > > > > * > > Forum - > FAQ, > - MATRONICS WEB FORUMS - > List Contribution Web Site - > -Matt > Dralle, List Admin. > > > > ________________________________ Message 7 _____________________________________ Time: 01:15:58 PM PST US From: rveighta@comcast.net Subject: Re: RV-List: Engine Hesitation Mike, I'm not sure what you mean by checking for an intake leak. How do you go about doing that? Walt ----- Original Message ----- From: "Mike Robertson" Sent: Monday, September 14, 2009 10:21:26 AM GMT -05:00 US/Canada Eastern Subject: RE: RV-List: Engine Hesitation Walt, =C2- have you tried checking for an intake leak.=C2- It can cause exactly what you are talking about. =C2- Mike Robertson =C2- From: rveighta@comcast.net Subject: RV-List: Engine Hesitation I have a Lycoming IO-360 in my RV8A which=C2- exhibits an engine hesitanc y or "stumble" that is proving very difficult to diagnose. This problem shows up when taxiing back in after a flight, and in an RPM ra nge of 750-1300. In flight there is no evidence of a stumble, and no stumble at initial start up, taxiing out for take off or during run- up. In other words, the engine only exhibits this behavior when it is warm. =C2- I have talked to some very knowledgable folks and have tried several things : (1) Reset the idle mixture, (2) removed and cleaned the servo finger screen, (3) removed the nozzles and placed them in a cup of ac etone, which was then placed in a sonic cleaner for about an hour. After the nozzles were reinstalled, I test flew the plane and the stumble was gone. However, a subsequent test flight revealed that although the engine was running much smoother, an occasional stumble w as still there. =C2- Additional facts: =C2- Oil temps are normal (around 180 deg F) Compression test is normal (all cylinders mid 70's) I'm using a Catto 3 blade prop =C2- Any and all suggestions you may have will be greatly appreciated. =C2- Thanks, =C2- Walt Shipley 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D Your E-mail and More On-the-Go. Get Windows Li/' target='_new'>Sign up no =========== == ________________________________ Message 8 _____________________________________ Time: 01:44:35 PM PST US From: rveighta@comcast.net Subject: Re: RV-List: Engine Hesitation Kelly, you're so right. This kind of problem does force you back to the bas ics. To give you a bit more info, the stumble doesn't occur when the throttle is pushed up; only at a steady setting. I have experimented with tie wrapping foam insulation around the injector l ines from the flow divider to the cylinders, but a test flight afterward revealed the pro blem was still there, so it appears fuel vaporization is not the culprit. Cylinder head temps are between 250-300 deg F on my Grand Rapids monitor. Total time on the engine is 750 TTSN and 300 STOH,=C2-=C2-=C2-=C2- =C2-which included new valves. I have not done a SB188 valve wobble test. Thanks,=C2-=C2-=C2-=C2-=C2- Walt ----- Original Message ----- From: "Kelly McMullen" Sent: Monday, September 14, 2009 9:57:54 AM GMT -05:00 US/Canada Eastern Subject: Re: RV-List: Engine Hesitation This type of troubleshooting forces you back to basics. Air, spark, fuel in right proportions at right time. When the engine is hot, vapor bubbles in fuel lines are possible. Tight valve stem to guide clearance(minor valve sticking) is possible. Coil faults can show up with heat. Stumbles are usually a mixture problem, but you don't say if it happens with or without throttle movement. You don't say what time is on the engine. My guess is either some fuel boiling in the injector lines or a valve sticking, preventing sufficient mixture getting into the cylinder. Have you done a SB188 valve wobble check? Spark problems are less likely to be at low power and intermittent. rveighta@comcast.net wrote: > I have a Lycoming IO-360 in my RV8A which =C2-exhibits an engine hesita ncy > or "stumble" that is proving very difficult to diagnose. > > This problem shows up when taxiing back in after a flight, and in an RPM > range of 750-1300. In flight there is no evidence of a stumble, > > and no stumble at initial start up, taxiing out for take off or during > run-up. In other words, the engine only exhibits this behavior when it > > is warm. > > =C2- > > I have talked to some very knowledgable folks and have tried several > things: (1) Reset the idle mixture, (2) removed and cleaned the > > servo finger screen, (3) removed the nozzles and placed them in a cup of > acetone, which was then placed in a sonic cleaner for about > > an hour. After the nozzles were reinstalled, I test flew the plane and > the stumble was gone. However, a subsequent test flight revealed > > that although the engine was running much smoother, an occasional > stumble was still there. > > =C2- > > Additional facts: > > =C2- > > Oil temps are normal (around 180 deg F) > > Compression test is normal (all cylinders mid 70's) > > I'm using a Catto 3 blade prop > > =C2- > > Any and all suggestions you may have will be greatly appreciated. > > =C2- > > Thanks, > > =C2- > > Walt Shipley > > * > > > * =========== =========== MS - =========== e - =C2- =C2- =C2- =C2- =C2--Matt Dralle, List Admin. =========== ________________________________ Message 9 _____________________________________ Time: 02:54:23 PM PST US From: Mike Robertson Subject: RE: RV-List: Engine Hesitation Walt=2C Try tightening all the clamps and bolts on the intake system from the oil s ump to the cylinder head and do a visual check on the rubber connectors for condition. If everything appears ok then=2C very carefully=2C spray soapy water on the intake system while the engine is running. You won't see bub bles because it is sucking but the engine will stumble if it a big leak=2C or you will see EGT and cylinder head temp changes. Mike From: rveighta@comcast.net Subject: Re: RV-List: Engine Hesitation Mike=2C I'm not sure what you mean by checking for an intake leak. How do y ou go about doing that? Walt ----- Original Message ----- From: "Mike Robertson" Sent: Monday=2C September 14=2C 2009 10:21:26 AM GMT -05:00 US/Canada Easte rn Subject: RE: RV-List: Engine Hesitation Walt=2C have you tried checking for an intake leak. It can cause exactly what you are talking about. Mike Robertson From: rveighta@comcast.net Subject: RV-List: Engine Hesitation I have a Lycoming IO-360 in my RV8A which exhibits an engine hesitancy or "stumble" that is proving very difficult to diagnose. This problem shows up when taxiing back in after a flight=2C and in an RPM range of 750-1300. In flight there is no evidence of a stumble=2C and no stumble at initial start up=2C taxiing out for take off or during ru n-up. In other words=2C the engine only exhibits this behavior when it is warm. I have talked to some very knowledgable folks and have tried several things : (1) Reset the idle mixture=2C (2) removed and cleaned the servo finger screen=2C (3) removed the nozzles and placed them in a cup of acetone=2C which was then placed in a sonic cleaner for about an hour. After the nozzles were reinstalled=2C I test flew the plane and th e stumble was gone. However=2C a subsequent test flight revealed that although the engine was running much smoother=2C an occasional stumble was still there. Additional facts: Oil temps are normal (around 180 deg F) Compression test is normal (all cylinders mid 70's) I'm using a Catto 3 blade prop Any and all suggestions you may have will be greatly appreciated. Thanks=2C Walt Shipley 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D Your E-mail and More On-the-Go. Get Windows Li/' target='_new'>Sign up no w. t=_blank>http://www.matronics.com/Navigator?RV-List p://forums.matronics.com blank>http://www.matronics.com/contribution _________________________________________________________________ Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. ________________________________ Message 10 ____________________________________ Time: 03:17:58 PM PST US From: "Neal George" Subject: RE: RV-List: Engine Hesitation Safest way is to connect the blower side of your shop vac to the intake and spray soapy water around all the joints looking for bubbles. There are more adventurous methods, but they present serious risk to life and limb neal From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of rveighta@comcast.net Sent: Monday, September 14, 2009 3:05 PM Subject: Re: RV-List: Engine Hesitation Mike, I'm not sure what you mean by checking for an intake leak. How do you go about doing that? Walt ________________________________ Message 11 ____________________________________ Time: 03:44:48 PM PST US From: Vincent Welch Subject: RE: RV-List: Engine Hesitation Walt=2C I know that it is off the subject but how did you end up with oil temps in the 180's? I also have an RV-8A with an IO-360-A1A and a Hartzell constant speed prop=2C I have one mag and one lightspeed ignition. On a warm day I will see 205 - 210 in cruise. The only time I see 180 is in the winter. My oil cooler is located behind #4 on the baffle. It has a 1" C-Channel st and off and is well sealed to the baffle. I have cleaned up as much as I c an=2C the baffle seal is good as evidenced by CHT's in the low to mid 300's . I even cut about two inches off the bottom of the cowl to open up the ex it a bit. How did you get 180's????? Vince From: rveighta@comcast.net Subject: RV-List: Engine Hesitation I have a Lycoming IO-360 in my RV8A which exhibits an engine hesitancy or "stumble" that is proving very difficult to diagnose. This problem shows up when taxiing back in after a flight=2C and in an RPM range of 750-1300. In flight there is no evidence of a stumble=2C and no stumble at initial start up=2C taxiing out for take off or during ru n-up. In other words=2C the engine only exhibits this behavior when it is warm. I have talked to some very knowledgable folks and have tried several things : (1) Reset the idle mixture=2C (2) removed and cleaned the servo finger screen=2C (3) removed the nozzles and placed them in a cup of acetone=2C which was then placed in a sonic cleaner for about an hour. After the nozzles were reinstalled=2C I test flew the plane and th e stumble was gone. However=2C a subsequent test flight revealed that although the engine was running much smoother=2C an occasional stumble was still there. Additional facts: Oil temps are normal (around 180 deg F) Compression test is normal (all cylinders mid 70's) I'm using a Catto 3 blade prop Any and all suggestions you may have will be greatly appreciated. Thanks=2C Walt Shipley 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D _________________________________________________________________ Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. ________________________________ Message 12 ____________________________________ Time: 04:40:19 PM PST US From: Richard McBride Subject: Re: RV-List: Engine Hesitation Vince, Just as another point of reference, I have an IO360-A3B6D in my -8 with dual Lightspeed. It has a firewall mounted oil cooler (13 row if I recall). The plenum into the cooler has a butterfly valve. Without shutting the valve I rarely see temperatures about 200 degrees unless in a climb on a hot day. It's not uncommon that I have to close the valve partially to get temps to 180 or above. With the valve open on a warm day my temps are usually in the 170s. Rick McBride On Sep 14, 2009, at 6:28 PM, Vincent Welch wrote: > Walt, > > I know that it is off the subject but how did you end up with oil > temps in the 180's? I also have an RV-8A with an IO-360-A1A and a > Hartzell constant speed prop, I have one mag and one lightspeed > ignition. On a warm day I will see 205 - 210 in cruise. The only > time I see 180 is in the winter. My oil cooler is located behind #4 > on the baffle. It has a 1" C-Channel stand off and is well sealed > to the baffle. I have cleaned up as much as I can, the baffle seal > is good as evidenced by CHT's in the low to mid 300's. I even cut > about two inches off the bottom of the cowl to open up the exit a > bit. How did you get 180's????? > > Vince > > Date: Mon, 14 Sep 2009 12:56:45 +0000 > From: rveighta@comcast.net > To: rv-list@matronics.com > Subject: RV-List: Engine Hesitation > > I have a Lycoming IO-360 in my RV8A which exhibits an engine > hesitancy or "stumble" that is proving very difficult to diagnose. > This problem shows up when taxiing back in after a flight, and in an > RPM range of 750-1300. In flight there is no evidence of a stumble, > and no stumble at initial start up, taxiing out for take off or > during run-up. In other words, the engine only exhibits this > behavior when it > is warm. > > I have talked to some very knowledgable folks and have tried several > things: (1) Reset the idle mixture, (2) removed and cleaned the > servo finger screen, (3) removed the nozzles and placed them in a > cup of acetone, which was then placed in a sonic cleaner for about > an hour. After the nozzles were reinstalled, I test flew the plane > and the stumble was gone. However, a subsequent test flight revealed > that although the engine was running much smoother, an occasional > stumble was still there. > > Additional facts: > > Oil temps are normal (around 180 deg F) > Compression test is normal (all cylinders mid 70's) > I'm using a Catto 3 blade prop > > Any and all suggestions you may have will be greatly appreciated. > > Thanks, > > Walt Shipley > > > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > ====================== > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > ====================== > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > ====================== > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > = > 3D > ====================== > > > Your E-mail and More On-the-Go. Get Windows Li/' target='_new'>Sign > up now. > > ________________________________ Message 13 ____________________________________ Time: 05:00:42 PM PST US From: rveighta@comcast.net Subject: Re: RV-List: Engine Hesitation Vince, I too had temps above 200 F on warm days. That was before I installe d=C2-louvered vents =C2-in the lower cowl. Now I have the reverse probl em; hard to get the oil temps up on cold days. Walt ----- Original Message ----- From: "Vincent Welch" Sent: Monday, September 14, 2009 6:28:47 PM GMT -05:00 US/Canada Eastern Subject: RE: RV-List: Engine Hesitation Walt, =C2- I know that it is off the subject but how did you end up with oil temps in the 180's?=C2- I also have an RV-8A with an IO-360-A1A and a Hartzell con stant speed prop, I have one mag and one lightspeed ignition.=C2- On a wa rm day I will see 205 - 210 in cruise.=C2- The only time I see 180 is in the winter.=C2- My oil cooler is located behind #4 on the baffle.=C2- I t has a 1" C-Channel stand off=C2-and is well sealed to the baffle.=C2- I have cleaned up as much as I can, the baffle seal is good as evidenced b y=C2-CHT's in the low to mid 300's.=C2- I even cut about two inches off the bottom of the cowl to open up the exit a bit.=C2- How did you get 18 0's????? =C2- Vince=C2- =C2- From: rveighta@comcast.net Subject: RV-List: Engine Hesitation I have a Lycoming IO-360 in my RV8A which=C2- exhibits an engine hesitanc y or "stumble" that is proving very difficult to diagnose. This problem shows up when taxiing back in after a flight, and in an RPM ra nge of 750-1300. In flight there is no evidence of a stumble, and no stumble at initial start up, taxiing out for take off or during run- up. In other words, the engine only exhibits this behavior when it is warm. =C2- I have talked to some very knowledgable folks and have tried several things : (1) Reset the idle mixture, (2) removed and cleaned the servo finger screen, (3) removed the nozzles and placed them in a cup of ac etone, which was then placed in a sonic cleaner for about an hour. After the nozzles were reinstalled, I test flew the plane and the stumble was gone. However, a subsequent test flight revealed that although the engine was running much smoother, an occasional stumble w as still there. =C2- Additional facts: =C2- Oil temps are normal (around 180 deg F) Compression test is normal (all cylinders mid 70's) I'm using a Catto 3 blade prop =C2- Any and all suggestions you may have will be greatly appreciated. =C2- Thanks, =C2- Walt Shipley 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D Your E-mail and More On-the-Go. Get Windows Li/' target='_new'>Sign up no =========== == ________________________________ Message 14 ____________________________________ Time: 05:34:08 PM PST US From: Paul Besing Subject: Re: RV-List: Waterproofing RV-4's Jeff, I had the same problem with mine. What I did was cut off the front of the fiberglass fairing that laps up on the forward skin. Then I covered the forward skin, very tightly, with wax paper (or use a mold release as long as it doesn't hurt the paint.) Then I adjusted the canopy to close very tightly. Glassed a new fairing on top of the old one, overlapping the front skin in an arc fashion. Let it cure closed. Then trimmed to fit, and put a seal from Ace Hardware underneath. Flew IMC quite a bit without any more leaking. Paul Besing ________________________________ From: Jeff Bertsch Sent: Sunday, September 13, 2009 9:39:41 PM Subject: RV-List: Waterproofing RV-4's My RV-4 can't fly through rain. It leaks terribly the forward edge of the tip over canopy. I've tried various seals, the latest being a V-shaped seal. Does anyone know how to really waterproof the RV-4? Jeff Bertsch Houston ________________________________ Message 15 ____________________________________ Time: 06:59:35 PM PST US From: Vincent Welch Subject: RE: RV-List: Engine Hesitation Are you using the cowl louvers also Rick? Vince From: rick.mcbride@me.com Subject: Re: RV-List: Engine Hesitation Vince=2C Just as another point of reference=2C I have an IO360-A3B6D in my -8 with d ual Lightspeed. It has a firewall mounted oil cooler (13 row if I recall) . The plenum into the cooler has a butterfly valve. Without shutting the valve I rarely see temperatures about 200 degrees unless in a climb on a ho t day. It's not uncommon that I have to close the valve partially to get t emps to 180 or above. With the valve open on a warm day my temps are usual ly in the 170s. Rick McBride On Sep 14=2C 2009=2C at 6:28 PM=2C Vincent Welch wrote: Walt=2C I know that it is off the subject but how did you end up with oil temps in the 180's? I also have an RV-8A with an IO-360-A1A and a Hartzell constant speed prop=2C I have one mag and one lightspeed ignition. On a warm day I will see 205 - 210 in cruise. The only time I see 180 is in the winter. My oil cooler is located behind #4 on the baffle. It has a 1" C-Channel st and off and is well sealed to the baffle. I have cleaned up as much as I c an=2C the baffle seal is good as evidenced by CHT's in the low to mid 300's . I even cut about two inches off the bottom of the cowl to open up the ex it a bit. How did you get 180's????? Vince From: rveighta@comcast.net Subject: RV-List: Engine Hesitation I have a Lycoming IO-360 in my RV8A which exhibits an engine hesitancy or "stumble" that is proving very difficult to diagnose. This problem shows up when taxiing back in after a flight=2C and in an RPM range of 750-1300. In flight there is no evidence of a stumble=2C and no stumble at initial start up=2C taxiing out for take off or during ru n-up. In other words=2C the engine only exhibits this behavior when it is warm. I have talked to some very knowledgable folks and have tried several things : (1) Reset the idle mixture=2C (2) removed and cleaned the servo finger screen=2C (3) removed the nozzles and placed them in a cup of acetone=2C which was then placed in a sonic cleaner for about an hour. After the nozzles were reinstalled=2C I test flew the plane and th e stumble was gone. However=2C a subsequent test flight revealed that although the engine was running much smoother=2C an occasional stumble was still there. Additional facts: Oil temps are normal (around 180 deg F) Compression test is normal (all cylinders mid 70's) I'm using a Catto 3 blade prop Any and all suggestions you may have will be greatly appreciated. Thanks=2C Walt Shipley 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D Your E-mail and More On-the-Go. Get Windows Li/' target='_new'>Sign up no w. href="http://www.matronics.com/Navigator?RV-List">http://www.matronics.co m/Navigator?RV-List href="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/con tribution _________________________________________________________________ Hotmail: Powerful Free email with security by Microsoft. ________________________________ Message 16 ____________________________________ Time: 06:59:42 PM PST US From: Vincent Welch Subject: RE: RV-List: Engine Hesitation I was looking at the louvers also. I was holding that option as a last res ort but it looks like I may have to go that way by next summer. Thanks for the info. Vince From: rveighta@comcast.net Subject: Re: RV-List: Engine Hesitation Vince=2C I too had temps above 200 F on warm days. That was before I instal led louvered vents in the lower cowl. Now I have the reverse problem=3B hard to get the oil temps up on cold days. Walt ----- Original Message ----- From: "Vincent Welch" Sent: Monday=2C September 14=2C 2009 6:28:47 PM GMT -05:00 US/Canada Easter n Subject: RE: RV-List: Engine Hesitation Walt=2C I know that it is off the subject but how did you end up with oil temps in the 180's? I also have an RV-8A with an IO-360-A1A and a Hartzell constant speed prop=2C I have one mag and one lightspeed ignition. On a warm day I will see 205 - 210 in cruise. The only time I see 180 is in the winter. My oil cooler is located behind #4 on the baffle. It has a 1" C-Channel st and off and is well sealed to the baffle. I have cleaned up as much as I c an=2C the baffle seal is good as evidenced by CHT's in the low to mid 300's . I even cut about two inches off the bottom of the cowl to open up the ex it a bit. How did you get 180's????? Vince From: rveighta@comcast.net Subject: RV-List: Engine Hesitation I have a Lycoming IO-360 in my RV8A which exhibits an engine hesitancy or "stumble" that is proving very difficult to diagnose. This problem shows up when taxiing back in after a flight=2C and in an RPM range of 750-1300. In flight there is no evidence of a stumble=2C and no stumble at initial start up=2C taxiing out for take off or during ru n-up. In other words=2C the engine only exhibits this behavior when it is warm. I have talked to some very knowledgable folks and have tried several things : (1) Reset the idle mixture=2C (2) removed and cleaned the servo finger screen=2C (3) removed the nozzles and placed them in a cup of acetone=2C which was then placed in a sonic cleaner for about an hour. After the nozzles were reinstalled=2C I test flew the plane and th e stumble was gone. However=2C a subsequent test flight revealed that although the engine was running much smoother=2C an occasional stumble was still there. Additional facts: Oil temps are normal (around 180 deg F) Compression test is normal (all cylinders mid 70's) I'm using a Catto 3 blade prop Any and all suggestions you may have will be greatly appreciated. Thanks=2C Walt Shipley 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D Your E-mail and More On-the-Go. Get Windows Li/' target='_new'>Sign up no w. t=_blank>http://www.matronics.com/Navigator?RV-List p://forums.matronics.com blank>http://www.matronics.com/contribution _________________________________________________________________ Hotmail: Powerful Free email with security by Microsoft. ________________________________ Message 17 ____________________________________ Time: 07:01:27 PM PST US From: Matt Dralle Subject: RV-List: Initial Baffle-To-Top-Cowling Fit... Dear Listers, The RV-8's cowling done and fits like a glove. I started the baffling last night and its coming along nicely. The fit on the sides and back are very good considering the IO-390 installation (and the use of the IO-360 baffle kit). The front baffling is completely different, however, and I'm slogging through the custom fitting. But here's my question. I decided to put the top cowling on top of the baffling that I've got installed so far and I was shocked that the baffling appears to be a good 1 to 1.5" too tall!! Is this because of the IO-390 or is that just where Van's expects you to start in your "cutting-it-down-to-size" phase? That's a lot of snipping and fitting and snipping and fitting. I was expecting to have to trim some, but not over a inch... Also, it looks like the over-sized oil cooler is going to fit nicely on the rear baffle with only a little "modification". But I'm not sure if the back, upper corner is going to clear the cowling. Since the cowling is sitting over a inch high right now, I've got no way to really trial fit the oil cooler and check for cowling clearance until I trim the baffling down. Worst-case I could put a blister on the cowling for the rear, upper flange of the oil cooler, I suppose, but that's kind of hokey. There is room to move the oil cooler in towards the centerline about 1", but then the mount will no longer line up with the flange on the outboard edge and will require more modifications. Thoughts...? Attached are some pics. ( Digest viewers check http://forums.matronics.com ). Matt Dralle RV-8 #82880 N998RV http://www.mykitlog.com/dralle Baffling and Oil Cooler... ________________________________ Message 18 ____________________________________ Time: 07:22:54 PM PST US From: "Bruce Gray" Subject: RE: RV-List: Engine Hesitation He means to check the intake riser seals where they exit the sump. The easiest way I know, is to spray each riser seal area with engine starter fluid while the engine is running at low idle. If the engine speeds up, you have a leak. Bruce www.Glasair.org -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of rveighta@comcast.net Sent: Monday, September 14, 2009 4:05 PM Subject: Re: RV-List: Engine Hesitation Mike, I'm not sure what you mean by checking for an intake leak. How do you go about doing that? Walt ----- Original Message ----- From: "Mike Robertson" Sent: Monday, September 14, 2009 10:21:26 AM GMT -05:00 US/Canada Eastern Subject: RE: RV-List: Engine Hesitation Walt, have you tried checking for an intake leak. It can cause exactly what you are talking about. Mike Robertson _____ From: rveighta@comcast.net Subject: RV-List: Engine Hesitation I have a Lycoming IO-360 in my RV8A which exhibits an engine hesitancy or "stumble" that is proving very difficult to diagnose. This problem shows up when taxiing back in after a flight, and in an RPM range of 750-1300. In flight there is no evidence of a stumble, and no stumble at initial start up, taxiing out for take off or during run-up. In other words, the engine only exhibits this behavior when it is warm. I have talked to some very knowledgable folks and have tried several things: (1) Reset the idle mixture, (2) removed and cleaned the servo finger screen, (3) removed the nozzles and placed them in a cup of acetone, which was then placed in a sonic cleaner for about an hour. After the nozzles were reinstalled, I test flew the plane and the stumble was gone. However, a subsequent test flight revealed that although the engine was running much smoother, an occasional stumble was still there. Additional facts: Oil temps are normal (around 180 deg F) Compression test is normal (all cylinders mid 70's) I'm using a Catto 3 blade prop Any and all suggestions you may have will be greatly appreciated. Thanks, Walt Shipley 3D======================= 3D==================== 3D======================= 3D==================== 3D======================= 3D==================== 3D======================= 3D==================== _____ Your E-mail and More On-the-Go. Get Windows Li/' target='_new'>Sign up now. t=_blank>http://www.matronics.com/Navigator?RV-List p://forums.matronics.com blank>http://www.matronics.com/contribution ________________________________ Message 19 ____________________________________ Time: 08:13:45 PM PST US From: "Garry" Subject: Re: RV-List: Engine Hesitation Where can I get info on these "cowl louvers"? Garry Stout ----- Original Message ----- From: Vincent Welch To: RV List Matronics Sent: Monday, September 14, 2009 9:58 PM Subject: RE: RV-List: Engine Hesitation Are you using the cowl louvers also Rick? Vince ------------------------------------------------------------------------- ----- From: rick.mcbride@me.com To: rv-list@matronics.com Subject: Re: RV-List: Engine Hesitation Date: Mon, 14 Sep 2009 19:30:56 -0400 Vince, Just as another point of reference, I have an IO360-A3B6D in my -8 with dual Lightspeed. It has a firewall mounted oil cooler (13 row if I recall). The plenum into the cooler has a butterfly valve. Without shutting the valve I rarely see temperatures about 200 degrees unless in a climb on a hot day. It's not uncommon that I have to close the valve partially to get temps to 180 or above. With the valve open on a warm day my temps are usually in the 170s. Rick McBride On Sep 14, 2009, at 6:28 PM, Vincent Welch wrote: Walt, I know that it is off the subject but how did you end up with oil temps in the 180's? I also have an RV-8A with an IO-360-A1A and a Hartzell constant speed prop, I have one mag and one lightspeed ignition. On a warm day I will see 205 - 210 in cruise. The only time I see 180 is in the winter. My oil cooler is located behind #4 on the baffle. It has a 1" C-Channel stand off and is well sealed to the baffle. I have cleaned up as much as I can, the baffle seal is good as evidenced by CHT's in the low to mid 300's. I even cut about two inches off the bottom of the cowl to open up the exit a bit. How did you get 180's????? Vince ------------------------------------------------------------------------- --- Date: Mon, 14 Sep 2009 12:56:45 +0000 From: rveighta@comcast.net To: rv-list@matronics.com Subject: RV-List: Engine Hesitation I have a Lycoming IO-360 in my RV8A which exhibits an engine hesitancy or "stumble" that is proving very difficult to diagnose. This problem shows up when taxiing back in after a flight, and in an RPM range of 750-1300. In flight there is no evidence of a stumble, and no stumble at initial start up, taxiing out for take off or during run-up. In other words, the engine only exhibits this behavior when it is warm. I have talked to some very knowledgable folks and have tried several things: (1) Reset the idle mixture, (2) removed and cleaned the servo finger screen, (3) removed the nozzles and placed them in a cup of acetone, which was then placed in a sonic cleaner for about an hour. After the nozzles were reinstalled, I test flew the plane and the stumble was gone. However, a subsequent test flight revealed that although the engine was running much smoother, an occasional stumble was still there. Additional facts: Oil temps are normal (around 180 deg F) Compression test is normal (all cylinders mid 70's) I'm using a Catto 3 blade prop Any and all suggestions you may have will be greatly appreciated. Thanks, Walt Shipley 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D ------------------------------------------------------------------------- --- Your E-mail and More On-the-Go. Get Windows Li/' target='_new'>Sign up now. href="http://www.matronics.com/Navigator?RV-List">http://www.matronics. com/Navigator?RV-List href="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/c ontribution ------------------------------------------------------------------------- ----- Hotmail: Powerful Free email with security barget='_new'>Get it now. ________________________________ Message 20 ____________________________________ Time: 08:52:47 PM PST US From: Jeff Bertsch Subject: RV-List: Re: Waterproofing RV-4's Thanks Paul.- I don't know if I follow what you did.- Do you have any p ictures online? - Jeff Bertsch --- On Sun, 9/13/09, Jeff Bertsch wrote: From: Jeff Bertsch Subject: RV-List: Waterproofing RV-4's My RV-4 can't fly through rain.- It leaks terribly the forward edge of th e tip over canopy.- I've tried various seals, the latest being a V-shaped seal.- Does anyone know how to really waterproof the RV-4? - Jeff Bertsch Houston =0A=0A=0A ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV-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/rv-list Browse Digests http://www.matronics.com/digest/rv-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.