---------------------------------------------------------- RV8-List Digest Archive --- Total Messages Posted Fri 08/05/16: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:35 AM - Baffling question (Miller John) 2. 06:59 AM - Re: Baffling question (Carl Froehlich) 3. 07:05 AM - Re: Baffling question (Carl Froehlich) 4. 09:57 AM - Re: Baffling question (Michael Lazarowicz) 5. 01:37 PM - Airflow smoother in cowling (Miller John) 6. 02:33 PM - Re: Baffling question (Miller John) ________________________________ Message 1 _____________________________________ Time: 06:35:47 AM PST US From: Miller John Subject: RV8-List: Baffling question Please see the attached picture where I have epoxied the airflow smoother to the upper cowling. The question for the list is should I try to fill in the void between the smoother and the cowling to prevent airflow going through this area? If so, what did you use to seal off the area so that there is no airflow underneath the smoother. The plans are silent on this. The sides of the smoother are close to the metal baffles, but there is a small gap between the edges of the smoother piece and the metal baffles. Thanks - Grumpy ________________________________ Message 2 _____________________________________ Time: 06:59:25 AM PST US From: "Carl Froehlich" Subject: RE: RV8-List: Baffling question You could if you want, but there is no practical reason to do so. This is to reduce turbulent flow coming into the baffle area, not to seal anything. If memory serves, you may need to trim the sides a little to clear the baffling. Carl From: owner-rv8-list-server@matronics.com [mailto:owner-rv8-list-server@matronics.com] On Behalf Of Miller John Sent: Friday, August 05, 2016 9:35 AM Subject: RV8-List: Baffling question Please see the attached picture where I have epoxied the airflow smoother to the upper cowling. The question for the list is should I try to fill in the void between the smoother and the cowling to prevent airflow going through this area? If so, what did you use to seal off the area so that there is no airflow underneath the smoother. The plans are silent on this. The sides of the smoother are close to the metal baffles, but there is a small gap between the edges of the smoother piece and the metal baffles. Thanks - Grumpy ________________________________ Message 3 _____________________________________ Time: 07:05:48 AM PST US From: "Carl Froehlich" Subject: RE: RV8-List: Baffling question You could if you want, but there is no practical reason to do so. This is to reduce turbulent flow coming into the baffle area, not to seal anything. If memory serves, you may need to trim the sides a little to clear the baffling. Carl From: owner-rv8-list-server@matronics.com [mailto:owner-rv8-list-server@matronics.com] On Behalf Of Miller John Sent: Friday, August 05, 2016 9:35 AM Subject: RV8-List: Baffling question Please see the attached picture where I have epoxied the airflow smoother to the upper cowling. The question for the list is should I try to fill in the void between the smoother and the cowling to prevent airflow going through this area? If so, what did you use to seal off the area so that there is no airflow underneath the smoother. The plans are silent on this. The sides of the smoother are close to the metal baffles, but there is a small gap between the edges of the smoother piece and the metal baffles. Thanks - Grumpy ________________________________ Message 4 _____________________________________ Time: 09:57:55 AM PST US From: Michael Lazarowicz Subject: Re: RV8-List: Baffling question I did my 8 cowl last year and after much research did fill the inside void. I did it primarily to give the rubber seal an area to sit against . Sealing the baffle in that area can be challenging, but I thought it was worth the effort. I used a piece of blue Dow Blue foam to shape the the area and did a two ply lay up to cover the area. It adds very little weight. one important thing to remember is fit the cowl first before epoxying the baffle in place even where you have the clecos. The cowl should be fitted to the bottom half on the plane as the Epoxy dries. You can fill the sides after that without fear of warping. Mike On Fri, Aug 5, 2016 at 10:05 AM, Carl Froehlich wrote: > You could if you want, but there is no practical reason to do so. This is > to reduce turbulent flow coming into the baffle area, not to seal anything. > > > If memory serves, you may need to trim the sides a little to clear the > baffling. > > > Carl > > > *From:* owner-rv8-list-server@matronics.com [ > mailto:owner-rv8-list-server@matronics.com > ] *On Behalf Of *Miller John > *Sent:* Friday, August 05, 2016 9:35 AM > *To:* rv8-list@matronics.com > *Subject:* RV8-List: Baffling question > > > Please see the attached picture where I have epoxied the airflow smoother > to the upper cowling. The question for the list is should I try to fill in > the void between the smoother and the cowling to prevent airflow going > through this area? If so, what did you use to seal off the area so that > there is no airflow underneath the smoother. > > > The plans are silent on this. The sides of the smoother are close to the > metal baffles, but there is a small gap between the edges of the smoother > piece and the metal baffles. > > > Thanks - Grumpy > > ________________________________ Message 5 _____________________________________ Time: 01:37:57 PM PST US From: Miller John Subject: RV8-List: Airflow smoother in cowling Please see the attached picture where I have epoxied the airflow smoother to the upper cowling. The question for the list is should I try to fill in the void between the smoother and the cowling to prevent airflow going through this area? If so, what did you use to seal off the area so that there is no airflow underneath the smoother. The plans are silent on this. The sides of the smoother are close to the metal baffles, but there is a small gap between the edges of the smoother piece and the metal baffles. Thanks - Grumpy ________________________________ Message 6 _____________________________________ Time: 02:33:42 PM PST US From: Miller John Subject: Re: RV8-List: Baffling question Thanks. Metal baffling all installed and the smoothers were trimmed to fit. Just wondering if there is a need to fill in that area as it will be a PITA to do it.my guess is that any air that does spill between the edge of the smoother and the metal baffling will be insignificant.. Grumpy > On Aug 5, 2016, at 8:58 AM, Carl Froehlich wrote: > > You could if you want, but there is no practical reason to do so. This is to reduce turbulent flow coming into the baffle area, not to seal anything. > > If memory serves, you may need to trim the sides a little to clear the baffling. > > Carl > > From: owner-rv8-list-server@matronics.com [mailto:owner-rv8-list-server@matronics.com ] On Behalf Of Miller John > Sent: Friday, August 05, 2016 9:35 AM > To: rv8-list@matronics.com > Subject: RV8-List: Baffling question > > Please see the attached picture where I have epoxied the airflow smoother to the upper cowling. The question for the list is should I try to fill in the void between the smoother and the cowling to prevent airflow going through this area? If so, what did you use to seal off the area so that there is no airflow underneath the smoother. > > The plans are silent on this. The sides of the smoother are close to the metal baffles, but there is a small gap between the edges of the smoother piece and the metal baffles. > > Thanks - Grumpy > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv8-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV8-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/rv8-list Browse Digests http://www.matronics.com/digest/rv8-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.