---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Wed 06/10/15: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:01 PM - exhaust pipe clearance (Fred Klein) 2. 02:32 PM - Re: exhaust pipe clearance (Jerry Rehn) 3. 03:21 PM - Re: Re: undercarriage retraction problem (Rowland Carson) 4. 04:36 PM - Re: exhaust pipe clearance (Fred Klein) ________________________________ Message 1 _____________________________________ Time: 01:01:03 PM PST US From: Fred Klein Subject: Europa-List: exhaust pipe clearance Gentlemenheres a situation and a question: I have maintained 1.50 inches clearance between the inside surface of my lower cowl and my engine exhaust pipes. I set this up w/ the assumption that this would be adequate considering that I have used a high temperature flame retardant resin (HTR250FR, by Resin Services, Inc.) for my custom cowls. It maintains a Flexural Modulus at 350 degrees F. of 6.25 x 36,000 (whatever that means). Would anyone be willing to opine on the advisability of applying some aluminized, adhesive-backed, heat barrier, to reflect radiant heat away from the cowl surface and back towards the engine and exhaust? (This so-called heat barrier is a composite consisting of aluminum foil on a backing material which looks like burlap to which is applied an adhesive good for 350 degrees F.) (I have a total of 10 sq. in. of inlet and 14 sq. in. of exit area for air circulation within the cowl.) (Obviously, this is not a 9xx Rotax installation.) Comments and opinions appreciated in advance, Fred ________________________________ Message 2 _____________________________________ Time: 02:32:29 PM PST US From: Jerry Rehn Subject: Re: Europa-List: exhaust pipe clearance Fred First, I have a Rotax 914. I had a little discoloration from exhaust heat on the cowling near the exhaust pipe exit. Probably less than an inch clearance. I used simple aluminum backed tape on the cowling, it is usually good for 2 or 3 years before I replace it, works fine, is light, eliminates further Issues to cowling. Keep it simple and light. You may not even have an issue with an inch and a half clearance . Wait and see, you may have good circulation of air and your cowls sound robust for heat. Can't wait to see you flying over Roche! Sent from my iPad > On Jun 10, 2015, at 12:59 PM, Fred Klein wrote: > > > Gentlemenheres a situation and a question: > > I have maintained 1.50 inches clearance between the inside surface of my lower cowl and my engine exhaust pipes. I set this up w/ the assumption that this would be adequate considering that I have used a > high temperature flame retardant resin (HTR250FR, by Resin Services, Inc.) for my custom cowls. It maintains a Flexural Modulus at 350 degrees F. of 6.25 x 36,000 (whatever that means). > > Would anyone be willing to opine on the advisability of applying some aluminized, adhesive-backed, heat barrier, to reflect radiant heat away from the cowl surface and back towards the engine and exhaust? > > (This so-called heat barrier is a composite consisting of aluminum foil on a backing material which looks like burlap to which is applied an adhesive good for 350 degrees F.) > > (I have a total of 10 sq. in. of inlet and 14 sq. in. of exit area for air circulation within the cowl.) > > (Obviously, this is not a 9xx Rotax installation.) > > Comments and opinions appreciated in advance, > > Fred > > > > ________________________________ Message 3 _____________________________________ Time: 03:21:59 PM PST US Subject: Re: Europa-List: Re: undercarriage retraction problem From: Rowland Carson On 8 Jun 2015, at 08:38, Remi Guerner wrote: > What type of tyre did you installed? 7.00x8 or 8.00x8 Remi - my tyre, as supplied originally with the kit, is marked 8.00-6. I am intending to adjust the up gate of the retract lever and then re-set the flap travel - I already have my new FL19 from Karen at the factory. in friendship Rowland | Rowland Carson ... that's Rowland with a 'w' ... | http://www.rowlandcarson.org.uk | Skype, Twitter: rowland_carson Facebook: Rowland Carson | pictures: http://picasaweb.google.com/rowlandcarson ________________________________ Message 4 _____________________________________ Time: 04:36:31 PM PST US From: Fred Klein Subject: Re: Europa-List: exhaust pipe clearance > On Jun 10, 2015, at 2:31 PM, Jerry Rehn wrote: > > Keep it simple and light. Jerryapropos weight, here are my preliminary numbers subject to finish paint, ELT, and some tools: > 2. XX Mar 14 using W. Munich=99s acft scale w/ 4 qts oil + 1 gal. coolant placed top of cowl: > Main Wheel: 757.0# > Tail Wheel: 77.8#* > Total: 834.8# > > * Includes blocking weighing __?__ > > C of G: 60.67=9D > > NOTE: Batteries are mounted on FG platforms which have NOT as yet been bonded in place and are free to slide fore or aft in accordance w/ C of G requirements after ALL components have been installed. > > NOTE: Engine requires 5 quarts of oil because of increased volume of oversized filter. All in all, I confess to having been both pleased and surprised F. ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message europa-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Europa-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/europa-list Browse Digests http://www.matronics.com/digest/europa-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.