Does that mean the pushrods had a lot of sideways play due to the bearings being set too wide apart at manufacture?
PO Box 129, Lawson, NSW, 2783. mobile 0429 493828 ............................................. ________________________________ From: Ian Williams <[email protected]> To: [email protected] Sent: Saturday, 15 August, 2009 4:54:56 AM Subject: RE: [DOG mailing list] Re: Aileron pushrod bearings Hi Rob, See below From:Rob Thompson [mailto:[email protected]] Sent: Friday, 14 August 2009 11:02 a.m. To: [email protected] Subject: [DOG mailing list] Re: Aileron pushrod bearings Hi Ian, A couple of questions... Was the play in the pushrods caused by the outer nylon wearing down by the rubbing of the pushrods? No, though there was a little evidence of rubbing. The A/C has only 1500hrs TT. The pushrods were just plain loose in the bearings What state were the pushrods in as a result of the seized bearings? No damage. All the bearings were affected. Some showed moisture damage as well cheers Rob Thompson PO Box 129, Lawson, NSW, 2783. mobile 0429 493828 ............................................. ________________________________ From:Ian Williams <[email protected]> To: [email protected] Sent: Friday, 14 August, 2009 7:23:03 AM Subject: RE: [DOG mailing list] More Re: [DOG mailing list] Morning Glory. Hi all you dimona devotees Im not sure that this message will get to you all but here goes .... I am currently getting an Ex Thai Dimona into the air for Dave McMillan who is in Greymouth New Zealand. It has been subjected to a reasonably corrosive environment while in storage over here, and it was the machine which Nigel was referring to regarding the pop rivet heads popping off the aileron hinges (maybe a dodgy Thai repair) because of corrosion. However I have found another issue which is really interesting. Inside the wings, the aileron push rods have 5 bearing sets (the manual says 3) Each set consists of 3 bearings pointing to the centre of the rod, and are all mounted in on a bracket which is rivet’d to a plywood bracket (with a hole in the centre for the tube of course) That ply bracket is then glassed on to the inside skin with 2 fiberglass “flanges” (hope I have explained that OK) The plot then thickens ..... I was concerned that there seemed to be quite a lot of “play” in the push rods, so cut a 110mm hole above the last “bearing bracket” close to the aileron bell crank to check the bearing. I found that all 3 bearings were almost impossible to move. Close inspection revealed that the bearing “outer” was actually the nylon roller and the balls of the bearing had pushed dents into the nylon ..... preventing free rotation. So ... after all 10 holes were cut, I found all 30 bearings in the same state. 10 new bearing sets were ordered from Hawkers (Now the Diamond agents over here) (at great cost) The new bearing sets have stainless brackets and the bearings are modified .....now have steel outers and a thinner nylon outer outer. They are REAL smooth. I have cut a 10mm hole above the bearing and will have to remove the wooden holder and reglass back in, Nigel thinks a better way would be to drill the hole (or holes alongside the brackets) ... it u do that bear in mind the fibreglass flange in the wooden bracket is about 1.5 inches wide (3 inches for both) but some brackets seemed only to have one flange. Best regards Ian Williams From:Nigel Baker [mailto:[email protected]] Sent: Thursday, 13 August 2009 11:11 p.m. To: [email protected] Subject: [DOG mailing list] More Re: [DOG mailing list] Morning Glory. Come to think of it Patch. There is a List called SOG (Stemme Operators Group) And us in DOG. What would a G109 group be. Of Course GOG. Oh my GOG I've probably given Russell idea's now. Nige. ----- >Original Message ----- >From:Nigel Baker >To:[email protected] >Sent:Thursday, August 13, >2009 8:17 PM >Subject:Re: [DOG mailing >list] Morning Glory. > >Exactly >Patch. Otherwise we will have to start sacrificing Gilder Pilots. Starting with >Macca and then Russell White who replied likewise to my mail but on >another list. >Nige. > >P.S. >Patch >you better keep it quiet you are turning up in a G109 GUM or else you'll >be seen as a turncoat. >This >is the "Dimona" Operators Group after all. > >----- >>Original Message ----- >>From:Patching >>To:[email protected] >>Sent:Thursday, August 13, >>2009 7:34 PM >>Subject:Re: [DOG mailing >>list] Morning Glory. >> >>Better >>not be! >>Patch >>VH- >>GUM >>----- >>>Original Message ----- >>>From:Ian Mc Phee >>>To:[email protected] >>>Sent:Thursday, August 13, >>>2009 6:54 PM >>>Subject:Re: [DOG mailing >>>list] Morning Glory. >>> >>>Yep season is over - just beer >>>drinking left for this season IM >>>2009/8/13 Nigel Baker <[email protected]> >>>I >>>hope this doesn't mean ones gone already and it's one less we get this >>>season. >>> >>>http://www.abc.net.au/news/stories/2009/08/13/2654370.htm >>> >>>Nige. >>> No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.392 / Virus Database: 270.13.53/2299 - Release Date: 08/13/09 06:11:00 ________________________________ Find local businesses and services in your area with Yahoo!7 Local. Get started. No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.392 / Virus Database: 270.13.49/2293 - Release Date: 08/09/09 18:10:00 __________________________________________________________________________________ Find local businesses and services in your area with Yahoo!7 Local. Get started: http://local.yahoo.com.au
