---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Thu 08/17/06: 8 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:22 PM - Prop piston cup (flir47) 2. 04:22 PM - SFM Fly-in, Great and Unbelievable news (Stephen Fox) 3. 05:10 PM - Re: Prop piston cup[LashBack] (A. Dennis Savarese) 4. 05:55 PM - Re: Prop piston cup[LashBack] (flir47) 5. 06:41 PM - Re: Re: Prop piston cup[LashBack] (A. Dennis Savarese) 6. 08:29 PM - Personal Cooling Device (Dave Laird) 7. 08:29 PM - Spartanburg airshow (Bill Walker) 8. 10:54 PM - fastener removal, (Tryon) ________________________________ Message 1 _____________________________________ Time: 01:22:07 PM PST US Subject: Yak-List: Prop piston cup From: "flir47" --> Yak-List message posted by: "flir47" Anyone machine a piston cup on a lathe??? If so. where did you locate at on the cup??? -------- It's not a real world war untill France surenders! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=55352#55352 ________________________________ Message 2 _____________________________________ Time: 04:22:58 PM PST US From: Stephen Fox Subject: Yak-List: SFM Fly-in, Great and Unbelievable news Bill Gianetta, Supervisor of Operations, Portland Maine Flight Standards District Office has granted our waiver to do a bomb ((pumpkin) drop in the #1 pond in downtown Sanford, ME during the RedStar Fall Fly-in at SFM So if you've been waiting to register for the event to see if we could pull this off - wait no longer! Maps and routing for the bomb drop are up on the web site, but you can only get to them after you register for the event. Register at: http://www.flyredstar.org/T_EventDetail.aspx?ID=11 you can also go to the web site to learn more and register. Web site: Fall Fly-in Steve Fox ________________________________ Message 3 _____________________________________ Time: 05:10:51 PM PST US From: "A. Dennis Savarese" Subject: Re: Yak-List: Prop piston cup[LashBack] --> Yak-List message posted by: "A. Dennis Savarese" Be very careful because if you take too much material off the dome/cup interior, the large seal on the piston will not seal properly and you will have a constant oil leak from around the dome. Replacing the seal with a new seal will not fix the problem. You may be better off buying a new/reconditioned piston and dome. Dennis ----- Original Message ----- From: "flir47" Sent: Thursday, August 17, 2006 3:21 PM Subject: Yak-List: Prop piston cup[LashBack] > --> Yak-List message posted by: "flir47" > > Anyone machine a piston cup on a lathe??? If so?. where did you locate > at on the cup??? > > -------- > It's not a real world war untill France surenders! > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=55352#55352 > > > ________________________________ Message 4 _____________________________________ Time: 05:55:07 PM PST US Subject: Yak-List: Re: Prop piston cup[LashBack] From: "flir47" --> Yak-List message posted by: "flir47" Dennis That is interesting. How is a cup reconditioned? Welded and turned? Or just cleaned up? I have the prop manual so . Im going to look up the tolerances if they are there. I put the seals in and the gasket is not leaking. So with that said it has to be the dome or shaft is worn. Its not rusted or pitted. How much is a dome?? By the way these things are like a BOAT "break out another thousand" :( -------- It's not a real world war untill France surenders! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=55383#55383 ________________________________ Message 5 _____________________________________ Time: 06:41:14 PM PST US From: "A. Dennis Savarese" Subject: Re: Yak-List: Re: Prop piston cup[LashBack] --> Yak-List message posted by: "A. Dennis Savarese" I'm assuming a cup/dome can be turned only "x" number of thousands. But I do not have those specifications available. I also do not know the procedure for reconditioning. Most likely though, it's a resurface only to the maximum inside diameter. If the dome is scored, it usually means the inner seal on the piston was probably badly worn. A worn inner seal usually permits oil to leak into the hub where it then shows up at the sawtooth mating surface of the prop flange/hub. Call Doug Sapp or Carl or Jill Hays for a price on the hub dome. Dennis ----- Original Message ----- From: "flir47" Sent: Thursday, August 17, 2006 7:54 PM Subject: Yak-List: Re: Prop piston cup[LashBack] > --> Yak-List message posted by: "flir47" > > Dennis > > That is interesting?. How is a cup reconditioned? Welded and turned? Or > just cleaned up? I have the prop manual so ?. I?Tm going to look up the > tolerances if they are there. I put the seals in and the gasket is not > leaking. So with that said it has to be the dome or shaft is worn. It?Ts > not rusted or pitted. > > How much is a dome?? By the way these things are like a BOAT "break out > another thousand" > :( > > -------- > It's not a real world war untill France surenders! > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=55383#55383 > > > ________________________________ Message 6 _____________________________________ Time: 08:29:52 PM PST US From: Dave Laird Subject: Yak-List: Personal Cooling Device --> Yak-List message posted by: Dave Laird Has anyone used any type of personal cooling device while they fly? I did a google search and found a variety of items, but I'm curious as to which work best in our airplanes. Dave "Simmering in Texas" Laird N63536 1983 CJ6A "Betty" Dallas (ADS) ________________________________ Message 7 _____________________________________ Time: 08:29:53 PM PST US From: "Bill Walker" Subject: Yak-List: Spartanburg airshow Does anyone have any info in regards to RedStars at his show? BW ________________________________ Message 8 _____________________________________ Time: 10:54:23 PM PST US From: "Tryon" Subject: Yak-List: fastener removal, I'll second what doug say's about the side cutters that works ok, but it's a little time conusming.. For the panel's that are easily removed and can be worked on the bench, I found the Dzus removal tool to work the best , cleanest and fastest. They make a cutting tool that is basically a round bushing with a sharp point that fits a certain way over the Dzus.. Can be bought for the various sized from "Mil-Spec Products" .. They are in Fla. I think.. They have the fasteners in Stainless also, in the various sizes, types, and lengths. but for the big one's like on the side panels, that are hard to remove, Dougs way is the best. but you still need the mandrels to reinstall the new fasteners.. Goodluck,, R. Wilson ---- Forwarded Message From: doug sapp Craig, The only way I have been able to do the job is to buy a pair of side cutters that has enough meat in the jaws to grind one side perfectly flat so that you end up with a very fine flat (and very sharp) edge. Place the cutters flat edge down and allow the sharp edges to go under the soft alu collar. Next work around the Duz, pinching off the alu collar as you go around. I do have the proper Chinese Duz fasteners if you need them. When restoring the Miniyak I noticed the all the slots on the stock aircraft were in line with the slip stream. When I attempted to replace the rusted Duz fasteners with US fasteners I found that now all the slots were 90 degrees to the slip stream. A very small point that I am sure no one would notice, but I wanted it to be "as per". Always Yakin, Doug Sapp -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com]On Behalf Of Craig Payne Sent: Friday, August 11, 2006 4:17 AM To: yak-list Subject: Yak-List: Dzus Removal I hate to interrupt all the fun on the 'list lately but does anyone have a slick way of removing Dzus grommets that crimp the studs? Looks like a hacksaw job otherwise. Craig Payne cpayne@joimail.com