---------------------------------------------------------- JabiruEngine-List Digest Archive --- Total Messages Posted Thu 03/04/10: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:50 PM - Re: STUCK PROP FLANGE BOLT- HELP ME PLEASE (MHerder) ________________________________ Message 1 _____________________________________ Time: 08:50:42 PM PST US Subject: JabiruEngine-List: Re: STUCK PROP FLANGE BOLT- HELP ME PLEASE From: "MHerder" Hey guys, To all those that have helped including Pete at US Jabiru (working at 10PM on a weekday evening talking to the Aussies) Thanks a bunch. Great customer support as usual. At this point in time I have removed the bolt... That's the good news, the bad news is that some thread came with it. I'd say that I still have half of the threads (deeper in) are entirely untouched, and that the "front" threads are damaged but still grab onto a bolt within a half a turn (so there is still a good bit of engagement). The direction given thus far from Jabiru has been to retap, clean up the threads and attempt to torque to full 30 ft #'s. If I don't get the full torque value, we'll reinvestigate and look for some other solutions. I've also purchased some longer UNBRAKO series 1960 Socket Cap screws as specified with material certficate data and will probably use a one inch bolt in lieu of the 3/4" standard for 1 of the six bolts. I'll be sure to double check that it isn't bottoming out and giving me a false torque value, but my initial measurements show that it should not bottom out as the hole is nearly about .95" deep and the prop hub is about 5/16" plus a bellville washer. I'll catch a few more threads than I would have if I used the 3/4". I'll also be making every attempt possible to safety wire even though it may be damn near impossible deep in that hub.. If I was reading this post, I'd have been thinking that this is impossible and that this bone head MHERDER had to have cross threaded this thing. While I'll admit that I have cross threaded many things in my life doing bone headed things, this was not one of those instances. My only two theories as to how this could have happened are now revised. 1) I got a little to agressive cleaning the bolts with the wire wheel and rounded off th threads. However, please note that I used the same bolt to teast two other holes with no issues prior to the unlucky one... 2) A piece of steel wire from my brush came loose in the hole that I was cleaning and caused it to jump a thread. -------- One Rivet at a Time! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=289292#289292 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message jabiruengine-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/JabiruEngine-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/jabiruengine-list Browse Digests http://www.matronics.com/digest/jabiruengine-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.