---------------------------------------------------------- Pietenpol-List Digest Archive --- Total Messages Posted Wed 02/09/05: 11 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:37 AM - Re: Steve Eldredge's Piet (Steve Eldredge) 2. 08:46 AM - CCW wood screws (Oscar Zuniga) 3. 10:09 AM - Re: CCW wood screws (Michael D Cuy) 4. 10:40 AM - Re: severely OT - CCW wood screws & drain water (DJ Vegh) 5. 10:53 AM - Re: severely OT - CCW wood screws & drain (John Ford) 6. 10:55 AM - Re: CCW wood screws (Steve Eldredge) 7. 11:12 AM - Re: severely OT - CCW wood screws & drain water (Phillips, Jack) 8. 11:35 AM - Re: CCW wood screws (gbowen@ptialaska.net) 9. 04:14 PM - Re: HVLP reccomendations (hjarrett) 10. 04:28 PM - Re: severely OT - CCW wood screws & drain water (hjarrett) 11. 04:46 PM - Re: fabric work (hjarrett) ________________________________ Message 1 _____________________________________ Time: 07:37:56 AM PST US Subject: RE: Pietenpol-List: Steve Eldredge's Piet From: "Steve Eldredge" --> Pietenpol-List message posted by: "Steve Eldredge" Thanks for the plug Oscar! I'm piping (popping, chiming) in more now that I've caught up on a back-log of piet emails. Ready for warm weather! Steve E -----Original Message----- From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Oscar Zuniga Subject: Pietenpol-List: Steve Eldredge's Piet --> Pietenpol-List message posted by: "Oscar Zuniga" Someone was asking about Piets in Utah the other day and Steve E. piped up since he's located in Utah. He also piped up (chimed in?) when the discussion turned to using latex house paint. In case anyone wants to know what Steve's plane looks like, it's the "poster child" that the host of our list (Matronics) uses, for example at: http://www.matronics.com/pietenpol-list/index.htm I've always liked the paint scheme that Steve used (British racing green fuselage, silver wings, nose, and fuselage top). And the "Aircamper" logo, and that big "E" on the tail... Oscar Zuniga San Antonio, TX mailto: taildrags@hotmail.com website at http://www.flysquirrel.net ________________________________ Message 2 _____________________________________ Time: 08:46:41 AM PST US From: "Oscar Zuniga" Subject: Pietenpol-List: CCW wood screws --> Pietenpol-List message posted by: "Oscar Zuniga" Here's a little puzzle for you antiquers, from a member of the KRNet: ==================== From: "Stephen Jacobs" Subject: KR> CCW wood screws Some time ago someone gave me a box of stuff that had belonged to someone that was no longer around. I understand that the old timer spent his time restoring old British airplanes - mainly wood (Tiger Moth and Chipmunk?). I was the only airplane guy they knew, so rather than toss it out, it came my way. There were some useful things in there, including a super tubing cutter for the smaller sizes (under 1/2") and turning tools for ferrels, flaring tools etc. Recently I needed some wood screws that were going to be covered with ply forever. I did not know if the moisture in the spruce (6%?) would ultimately corrode steel screws, so I decided to use brass just in case, but where to on a Sunday eve. I remembered seeing some brass wood screws in one of the little drawers in this box of treasures - they were the perfect size. Problem is, they would not do what screws are supposed to do. After a period of total perplexion, I finally realized that they had a left-hand "thread". I turned them backwards and in they went. I was reluctant to bury them under the ply, they may be unique and valuable. I cannot dredge up any logical reason why anyone would make a reverse thread wood screw - maybe to counter harmonic vibrations?? I doubt anyone else has any answers, but worth mentioning. Take care Steve J ====================== Oscar Zuniga San Antonio, TX mailto: taildrags@hotmail.com website at http://www.flysquirrel.net ________________________________ Message 3 _____________________________________ Time: 10:09:52 AM PST US From: Michael D Cuy Subject: Re: Pietenpol-List: CCW wood screws --> Pietenpol-List message posted by: Michael D Cuy Oscar--they use LH threaded wood screws in Australia. Just like how their water swirls the opposite direction when toilets are flushed, they have winter when we have summer, etc. Full of crap in Ohio, Mike C. PS-- a very curious thing you found--neat ! do not archive ________________________________ Message 4 _____________________________________ Time: 10:40:06 AM PST US From: "DJ Vegh" Subject: Re: Pietenpol-List: severely OT - CCW wood screws & drain water --> Pietenpol-List message posted by: "DJ Vegh" I once asked my Earth Science/Physics teacher in high school this question... he was unable to answer it. I felt pretty macho at the time being able to stump the teacher in front of the class. "if our drain water swirls clockwise in the northern hemisphere and it goes ccw in southern hemisphere...... what happens at the equator? does it just go straight down???" I still haven't got a real answer on that.... 13 yrs later. DJ ----- Original Message ----- From: "Michael D Cuy" > Oscar--they use LH threaded wood screws in Australia. Just like how their > water swirls > the opposite direction when toilets are flushed, they have winter when we > have summer, etc. > > Full of crap in Ohio, > > Mike C. > ________________________________ Message 5 _____________________________________ Time: 10:53:48 AM PST US From: "John Ford" water Subject: Re: Pietenpol-List: severely OT - CCW wood screws & drain water --> Pietenpol-List message posted by: "John Ford" http://www.loc.gov/rr/scitech/mysteries/coriolis.html The Coriolis force is too weak to affect a sink or bathtub full of water... John John Ford john@indstate.edu 812-237-8542 >>> djv@imagedv.com Wednesday, February 09, 2005 1:38:00 PM >>> --> Pietenpol-List message posted by: "DJ Vegh" I once asked my Earth Science/Physics teacher in high school this question... he was unable to answer it. I felt pretty macho at the time being able to stump the teacher in front of the class. "if our drain water swirls clockwise in the northern hemisphere and it goes ccw in southern hemisphere...... what happens at the equator? does it just go straight down???" I still haven't got a real answer on that.... 13 yrs later. DJ ----- Original Message ----- From: "Michael D Cuy" > Oscar--they use LH threaded wood screws in Australia. Just like how their > water swirls > the opposite direction when toilets are flushed, they have winter when we > have summer, etc. > > Full of crap in Ohio, > > Mike C. > ________________________________ Message 6 _____________________________________ Time: 10:55:58 AM PST US Subject: RE: Pietenpol-List: CCW wood screws From: "Steve Eldredge" --> Pietenpol-List message posted by: "Steve Eldredge" So which way does water swirl at the equator? Maybe it depends on the weather... On the fore of a cold front it would swirl clockwise, and on the lee it would switch direction... That must be it. Steve E -----Original Message----- From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Michael D Cuy Subject: Re: Pietenpol-List: CCW wood screws --> Pietenpol-List message posted by: Michael D Cuy Oscar--they use LH threaded wood screws in Australia. Just like how their water swirls the opposite direction when toilets are flushed, they have winter when we have summer, etc. Full of crap in Ohio, Mike C. PS-- a very curious thing you found--neat ! do not archive ________________________________ Message 7 _____________________________________ Time: 11:12:40 AM PST US Subject: RE: Pietenpol-List: severely OT - CCW wood screws & drain water From: "Phillips, Jack" --> Pietenpol-List message posted by: "Phillips, Jack" My uncle was a captain in the Navy and crossed the equator many times. I asked him once just before he was going to cross the equator to do the experiment - run water in a sink and see what it does when the equator is crossed. He said he started it running in the northern hemisphere and it swirled counterclockwis, as normal. As he appraoched the equator he observed it carefully and found it continued to swirl counterclockwise, long after he had passed the equator. He turned the water off, then turned it on again and it went clockwise! He supposed that the coriolis force is strong enough to set a direction, but not strong enough to overcome the flow once a direction had been set. I dunno - I guess it makes sense. Otherwise there would be warnings on overseas aircraft lavatories that the water might jump out of the sink trying to change directions when flying over the equator. For Piet's sake, Do Not Archive Jack Phillips -----Original Message----- --> Pietenpol-List message posted by: "DJ Vegh" I once asked my Earth Science/Physics teacher in high school this question... he was unable to answer it. I felt pretty macho at the time being able to stump the teacher in front of the class. "if our drain water swirls clockwise in the northern hemisphere and it goes ccw in southern hemisphere...... what happens at the equator? does it just go straight down???" I still haven't got a real answer on that.... 13 yrs later. DJ ________________________________ Message 8 _____________________________________ Time: 11:35:51 AM PST US From: "gbowen@ptialaska.net" Subject: RE: Pietenpol-List: CCW wood screws --> Pietenpol-List message posted by: "gbowen@ptialaska.net" How about the harmonics that could be generated by props/engines that turned clockwise? Some of the early British engines did have props that turned clockwise, perhaps those wise early adventurers of aviation discovered CCW screws were less likely to work their way out of the wood vs traditional screws? If so, those of you flying auto engines with CW turning props may have a screw lose and not know it. Gordon Bowen Original Message: ----------------- From: Oscar Zuniga taildrags@hotmail.com Subject: Pietenpol-List: CCW wood screws --> Pietenpol-List message posted by: "Oscar Zuniga" ________________________________ Message 9 _____________________________________ Time: 04:14:52 PM PST US From: "hjarrett" Subject: Re: Pietenpol-List: HVLP reccomendations I bough one of the Harbor Freight HVLP spray units for under $100 and painted my whole Taylorcraft with it using the old time method of nitrate dope, aluminum filled clear and color byuterate. It never missed a beat, uses half the dope I expected and produced a show finish (where I did the prep properly). The whole thing looks GREAT and I will NEVER go back. It was fantastic using a piece of 2" tape on the open window openings with no paper in the holes and NO overspray in the plane (practice first, there IS a technique to getting no overspray). I shot the whole plane with my car sitting 10' away from the open hangar door and there isn't a fleck of paint on my car the factory didn't put there. Hank J. ----- Original Message ----- From: DJ Vegh To: pietenpol-list@matronics.com Sent: Tuesday, February 08, 2005 12:31 AM Subject: Pietenpol-List: HVLP reccomendations Since Poly-Spray and color coats are in my future I am trying to figure out what type of equipment to buy for spraying. My dad want's me to buy an $800 Accuspray HVLP unit but I've heard some of the locals out here at the field say that a cheap Home Depot unit does just fine. I'd REALLY love to save the money I'd spend on an Accuspray and use that towards a transponder. Would a cheap HVLP unit get the job done? I'm not looking for glass smooth paint but I do want it to look somewhat good. DJ ________________________________ Message 10 ____________________________________ Time: 04:28:53 PM PST US From: "hjarrett" Subject: Re: Pietenpol-List: severely OT - CCW wood screws & drain water --> Pietenpol-List message posted by: "hjarrett" Ask any sailor who has "Crossed the Line". It swirls the same way it did in the northern hemisphere. In fact we went all the way to Rio and none of the drains I looked at EVER changed directions. From what a physics major on board said there are so many forces acting on the water that are so much more powerful than choriolis (SP?) he would have been shocked to see one change direction. Didn't explain why the majority started out one direction (not all, but most) but I would imagine in a brand new clean drain choriolis is a bigger % of the total force in effect. Once crud starts accumulating in the pipe with a swirl pattern established there isn't enough "push" from the Earth rotation to overcome it. Hank J ----- Original Message ----- From: "DJ Vegh" Subject: Re: Pietenpol-List: severely OT - CCW wood screws & drain water > --> Pietenpol-List message posted by: "DJ Vegh" > > I once asked my Earth Science/Physics teacher in high school this > question... he was unable to answer it. I felt pretty macho at the time > being able to stump the teacher in front of the class. > > "if our drain water swirls clockwise in the northern hemisphere and it goes > ccw in southern hemisphere...... what happens at the equator? does it just > go straight down???" > > I still haven't got a real answer on that.... 13 yrs later. > > DJ > > ----- Original Message ----- > From: "Michael D Cuy" > > Oscar--they use LH threaded wood screws in Australia. Just like how > their > > water swirls > > the opposite direction when toilets are flushed, they have winter when we > > have summer, etc. > > > > Full of crap in Ohio, > > > > Mike C. > > > > ________________________________ Message 11 ____________________________________ Time: 04:46:13 PM PST US From: "hjarrett" Subject: Re: Pietenpol-List: fabric work --> Pietenpol-List message posted by: "hjarrett" I bought some of the oil based Rust-oleum to try on the steel parts of my plane and it seemed to work really well. It thins easily and covers well with a small sprayer. I got some on the edges of some fabric areas and it seemed to stick pretty well to the dope (I was using an air-brush trying to get some small steel parts coming through the fabric that the dope didn't want to stick to at all). Question is, how well does the Rust-oleum stick to fabric with dope already on it? I haven't done the trim colors yet and the custom mixed Rust-oleum is MUCH cheaper than dope and has a good finish. Will it last? Anybody tried markings in an oil based paint on a dope finish? Hank J ----- Original Message ----- From: Subject: Re: Pietenpol-List: fabric work > --> Pietenpol-List message posted by: Rcaprd@aol.com > > Oscar, > I have oil based enamel Aluminum Rust-oleum on my plane, for the UV > protection, and oil based Red Devil Red, for the trim. The paint is holding up very > well. For the repairs I have done, I have been fairly successful by using duct > tape to remove most of the paint, down to the fabric. Carefully test small > areas. Experiment using the duct tape right on unsanded paint, or use fine sand > paper to remove the gloss, clean the dust off and press the duct tape on, and > RIP off the paint, leaving reletively clean fabric. This probably wouldn't > work with Dope. I finished up cleaning the fabric with plenty of clean rags, > and MEK wearing rubber gloves. Remove the paint, and clean the fabric before > you cut the fabric, or the loose edges are much more difficult to clean. Like > Terry said, be very carefull not to sand into any fibers. 1" to 2" overlap > for the patch, using poly tac, and even blend the edges away with you fingers > and the glue. Finish blending the edges with an iron at temperatures toward the > lower end of the range. You should be able to blend in paint right up to the > patch, and make the patch almost disappear. To save weight on the empenage, I > used 1.8 oz fabric. It's also easier to use the lighter fabric, however, > your patch should be the same weight as what it is covered with. Fabric repair > is not very difficult. Matching the paint will probably be your biggest > challenge, however, repairs give 'er some character !! > > Chuck G. > >