---------------------------------------------------------- Zenith701801-List Digest Archive --- Total Messages Posted Mon 01/04/10: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 10:35 AM - chat (George Race) 2. 06:12 PM - Re: How to install the cowling sink plates? (John Marzulli) ________________________________ Message 1 _____________________________________ Time: 10:35:25 AM PST US From: "George Race" Subject: Zenith701801-List: chat Live Chat Room every Monday evening around 8:00 EDT www.mykitairplane.com Click on the Chat Room link at the top of the page. George ________________________________ Message 2 _____________________________________ Time: 06:12:21 PM PST US Subject: Zenith701801-List: Re: How to install the cowling sink plates? From: John Marzulli Thanks, I mistakenly called them "sink plates" when I meant "nutplates". Zenith finally reopened from the holidays and I was able to get in contact with Roger. As always he was able to straighten me out. It turns out the manual is partially wrong compared to how Zenith shipped my cowling. Roger confirmed that you are indeed supposed to bore a counter sink hole into the fiberglass to hold the nutplates onto the inner lip of the bottom half of the cowl. Zenith is now suggesting leaving the holes on the plates at their current size and using A3 sized blind rivets. Here are some photos I took on Sunday of the project: http://marzulliphoto.net/Airplanes/Spinner-and-Cowl-questions/10852940_KXmXA/1/757077715_7r2hC Thanks again, John Marzulli http://www.GenevieveMarzulli.org/ http://MarzulliPhoto.net/ http://701Builder.blogspot.com/ On Fri, Jan 1, 2010 at 10:22 PM, John Marzulli wrote: > There are some details lacking in the Zenith instructions for the new style > FFW cowling install. ;-) > > I have my cowling clecoed on, but am not sure about how to use the sink > plates. > > Based on the instructions/HBH video, it seems like the process is this: > > 1) Get the cowling positioned and clecoed together. > 2) Drill out the forward four holes where the split pieces join > A) to AN5 on the top piece ( to let the washers rest "counter sunk" ) > B) to AN3 on the bottom piece > 3) Attach the nutplates to the bottom half. > > So based on this I have a few questions > > 1) How do I keep the cowling lip as nicely aligned as I have it now? I > would guess that since the holes are a little large that there is some > slack. > 2) Since the recieving shaft of the nutplate is larger than AN3, I will > assume that the plate gets riveted to the inside. What is the best procedure > for drilling the holes for the rivets without loosing alignment? > 3) I am supposed to countersink the rivets for the nutplate. How do you > countersink thin fiberglass like this? Making a dimple seems like a bad > idea. Using a drilling reamer/countersink seems worse. The directions call > for the holes to be enlarged to #30, but not which rivets to use. The soft > brass A3s fit without enlarging, but the dome head would cause a poor fit... > > > Many thanks in advance, > > John Marzulli > > http://www.GenevieveMarzulli.org/ > http://MarzulliPhoto.net/ > http://701Builder.blogspot.com/ > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith701801-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith701801-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/zenith701801-list Browse Digests http://www.matronics.com/digest/zenith701801-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.