---------------------------------------------------------- Pietenpol-List Digest Archive --- Total Messages Posted Mon 04/02/07: 23 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:03 AM - Re: Just a few quick rib questions (Gene & Tammy) 2. 05:45 AM - donation for Piet builders (Oscar Zuniga) 3. 06:30 AM - Hurst Airheart brake master cylinder, HELP (Mitchgarner757@aol.com) 4. 06:45 AM - Re: BOM (Rick Holland) 5. 08:07 AM - donation for Piet builders... oops! (Oscar Zuniga) 6. 08:07 AM - Wing Rib Template Problem????? (Dave Abramson) 7. 08:15 AM - Re: Wing weight (Thomas Bernie) 8. 08:52 AM - bouncy, bouncy, bouncy (Roman Bukolt) 9. 09:05 AM - Ada Air Expo, Ada, OK (Terry Hall) 10. 09:12 AM - Re: Wing Rib Template Problem????? (Glenn Thomas) 11. 09:41 AM - bouncy, bouncy, bouncy (Oscar Zuniga) 12. 09:47 AM - Re: Re: Wing Rib Template Problem????? (Dave Abramson) 13. 09:55 AM - Re: Wing Rib Template Problem????? (Bill Church) 14. 02:28 PM - Re: Wing Rib Template Problem????? (Scott Knowlton) 15. 03:01 PM - Re: Wing Rib Template Problem????? (Bill Church) 16. 04:23 PM - Re: bouncy, bouncy, bouncy (Roman Bukolt) 17. 04:31 PM - Re: Re: Wing Rib Template Problem????? (Roman Bukolt) 18. 05:01 PM - EAA and Montana (Tim Verthein) 19. 05:14 PM - Mont. Piet (Dick Navratil) 20. 05:58 PM - Re: bouncy, bouncy, bouncy (walt evans) 21. 06:29 PM - Re: Re: Wing Rib Template Problem????? (johnwoods@westnet.com.au) 22. 08:57 PM - Re: Ada Air Expo, Ada, OK (Steve Ruse) 23. 09:08 PM - Re: Wing Rib Template Problem????? (Scott Knowlton) ________________________________ Message 1 _____________________________________ Time: 04:03:42 AM PST US From: "Gene & Tammy" Subject: Re: Pietenpol-List: Just a few quick rib questions Rob, I've talked with you many times in person. I was in charge of public relations at APD for a few years and worked there 1965 thru 1985. Small world. Will be in and out of Anchorage all summer. Would love to meet up and see your Piet. My motor should be back together with-in this month and mine will be flying again. Gene ----- Original Message ----- From: "Rob Stapleton" Sent: Sunday, April 01, 2007 9:48 PM Subject: RE: Pietenpol-List: Just a few quick rib questions > > Yes indeed Gene. Four years from 1975-79 at the A D N! > RS > Do not archive > > Rob Stapleton, Jr. > Photographer/writer > P.O.Box 242186 > Anchorage, AK 99524 > www.alaskasportpilotcenter.net > www.alaskafoto.com > (907) 230.9425 > > > -----Original Message----- > From: owner-pietenpol-list-server@matronics.com > [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Gene & > Tammy > Sent: Sunday, April 01, 2007 5:41 PM > To: pietenpol-list@matronics.com > Subject: Re: Pietenpol-List: Just a few quick rib questions > > > > Rob, were you a photographer/writer with the daily news? > Gene > ----- Original Message ----- > From: "Rob Stapleton" > To: > Sent: Sunday, April 01, 2007 5:45 PM > Subject: RE: Pietenpol-List: Just a few quick rib questions > > > What is this about a builder's manual? Where can I get one? I am just > going > by the plans....! > > Rob Stapleton, Jr. > Photographer/writer > P.O.Box 242186 > Anchorage, AK 99524 > www.alaskasportpilotcenter.net > (907) 230.9425 > > -----Original Message----- > From: owner-pietenpol-list-server@matronics.com > [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Ryan > Michalkiewicz > Sent: Sunday, April 01, 2007 2:01 PM > To: pietenpol-list@matronics.com > Subject: Pietenpol-List: Just a few quick rib questions > > Hello everyone; > > Just a few quick rib questions. First, let me say I > took the advice of the list and threw out my full size rib print and am > manually laying out my jig, thank you. I have not recived my full plans > yet > and I am working out of my builders manual, page 30. I have started with > the > "chord line" as illustrated, and plotted out the bottom side of the rib. I > am confused whether the top mesurements are from the top of the rib to the > chord line, or only to the bottom of the rib? > Second, what are the first and last mesurements on > the underside of the rib? There are arrows only, with no mesurements. > Third, what is the lower mesurement opposite "4 1/2", > 18" from the rear. it is between 7/32"and 1/16" > > Thank you, > > Ryan > > > Ryan Michalkiewicz > Skybolt Project > > > Never miss an email again! > Yahoo! Toolbar > tures/mail/> alerts you the instant new Mail arrives. Check it out. > tures/mail/> > > > Forums! > > > ________________________________ Message 2 _____________________________________ Time: 05:45:51 AM PST US From: "Oscar Zuniga" Subject: Pietenpol-List: donation for Piet builders For anyone interested EAA Chapt 57 Dick Navratil 1415 Skiles Ln. Arden Hills, Mn. 55112 _________________________________________________________________ 5.5%* 30 year fixed mortgage rate. Good credit refinance. Up to 5 free quotes - *Terms https://www2.nextag.com/goto.jsp?product=100000035&url=%2fst.jsp&tm=y&search=mortgage_text_links_88_h2a5d&s=4056&p=5117&disc=y&vers=910 ________________________________ Message 3 _____________________________________ Time: 06:30:12 AM PST US From: Mitchgarner757@aol.com Subject: Pietenpol-List: Hurst Airheart brake master cylinder, HELP Hi Max, Last year I purchased a Pazmany PL4 that was built in 1977 and never flown. It has the Hurst-Airheart brakes on it. The parts are a bit pricey. Be sure to order the correct material. They sell 2 kinds of seals, one for mineral oil and one for auto brake fluid. After a lot of searching I found the supplier in Minnesota. The company is: Tol-O-Matic, Inc. 3800 County Road 116 Hamel, MN 55340 Phone 763-478-8000, 800-328-2178 Fax 763-478-8080 Web Site: _www.tolomatic.com_ (http://www.tolomatic.com) email: _sales@tolomatic.com_ (mailto:sales@tolomatic.com) All the best, Mitch Garner RV-4, PL-4 ************************************** See what's free at http://www.aol.com. ________________________________ Message 4 _____________________________________ Time: 06:45:24 AM PST US From: "Rick Holland" Subject: Re: Pietenpol-List: BOM Thanks for remembering that Scott. Many people use stairway railing (usually douglas fir) for the leading edges as recommended on this list by Mike Cuy, and clear pine or douglas fir for the trailing edge. Save you some dough. Rick On 3/31/07, Scott Schreiber wrote: > > Just beware that the wing kit does not include leading or trailing edge > Spruce. If your going to order the spruce kit you will be paying truck > shipping, so you may as well get those pieces in one the same order and save > about $100. > > -Scott > > ----- Original Message ----- > *From:* Rick Holland > *To:* pietenpol-list@matronics.com > *Sent:* Saturday, March 31, 2007 11:33 AM > *Subject:* Re: Pietenpol-List: BOM > > Ryan > > This may help a bit, attached the Piet wood kit from ACS that I purchased > a couple years ago for $800. Don't know what the price is now. Included all > the wood I needed for a long fuselage minus 500 ft. of 1/4 x 1/2 capstrip as > mentioned on the list, and sheets of 1/16", 1/8", and 1/4" plywood. > Congratulations on your decision to start your project. > > Rick > > On 3/30/07, Ryan Michalkiewicz wrote: > > > > Does any one have an udated bill of materials? I would like to begin > > ordering wood. > > > > Thank you; > > > > Ryan Michalkiewicz > > > > ------------------------------ > > Don't be flakey. Get Yahoo! Mail for Mobileand > > always stay connectedto friends. > > > > * > > http://www.matronics.com/Navigator?Pietenpol-Listhttp://forums.matronics.com* > > > > * > > > * > > -- Rick Holland "Logic is a wreath of pretty flowers, that smell bad" ________________________________ Message 5 _____________________________________ Time: 08:07:15 AM PST US From: "Oscar Zuniga" Subject: Pietenpol-List: donation for Piet builders... oops! Doh-! Sorry for that last post. I intended to send myself the address so I would remember to send a check for the youngsters who are restoring the Piet, and I guess I sent it to the list instead. Maybe for something Piet related in this post I can just say that every landing I've made in 41CC so far has resulted in a slight little bounce (love those 6.00x6's) and chirp. I have yet to actually grease one on but I know my time is coming. I also have yet to operate it off the grass, but plan to do so as soon as we dry up from all the rain we've had (wettest March on record here). Darn... I guess I'll just have to get out there and try harder ;o) do not archive Oscar Zuniga San Antonio, TX mailto: taildrags@hotmail.com website at http://www.flysquirrel.net _________________________________________________________________ Exercise your brain! Try Flexicon. http://games.msn.com/en/flexicon/default.htm?icid=flexicon_hmemailtaglinemarch07 ________________________________ Message 6 _____________________________________ Time: 08:07:37 AM PST US From: "Dave Abramson" Subject: Pietenpol-List: Wing Rib Template Problem????? Hello everyone! I am a bit of a lurker but I saw something about NOT using the Full Size rib template? I have a full set of ribs made to the full size copy you can buy with the plans. Can someone let me know what the concern was / is? Best Regards, Dave Fuse about done, almost ready to start wings! _____ See what's free at AOL.com . ________________________________ Message 7 _____________________________________ Time: 08:15:52 AM PST US Subject: Re: Pietenpol-List: Wing weight From: Thomas Bernie Clif, I laminated 1"x1.5" strips (alternating grain) with West System and adhesive filler. Here is a photo of the rear spar. Tom On Sun, 2007-04-01 at 23:08 -0700, Clif Dawson wrote: > > Ah, Right. > What method of lamination did you use? > > Clif > > > > > > > > > Clif, > > > > The Grega modification cad drawings don't call for routing (they specify > > aircraft spruce). Now I wish I had routed or looked into a built up > > spar -- at least my spars are laminated and strong. > > > > Tom > > > > > > Did you rout the spars as per the plans? > > > > Clif > > > > > > > ________________________________ Message 8 _____________________________________ Time: 08:52:53 AM PST US From: "Roman Bukolt" Subject: Pietenpol-List: bouncy, bouncy, bouncy Oscar, do you chop the throttle when you're just a little above ground? I maintain about 1200 to 1500 rpm at touchdown, then close the throttle once the wheels are rolling. this is on tarmac. My engine is an A-65. Occasionally I hear the wheels rolling before I know I've landed. Roman Bukolt do not archive ----- Original Message ----- From: "Oscar Zuniga" Sent: Monday, April 02, 2007 10:06 AM Subject: Pietenpol-List: donation for Piet builders... oops! > > > Doh-! Sorry for that last post. I intended to send myself the address so > I would remember to send a check for the youngsters who are restoring the > Piet, and I guess I sent it to the list instead. > > Maybe for something Piet related in this post I can just say that every > landing I've made in 41CC so far has resulted in a slight little bounce > (love those 6.00x6's) and chirp. I have yet to actually grease one on but > I know my time is coming. I also have yet to operate it off the grass, > but plan to do so as soon as we dry up from all the rain we've had > (wettest March on record here). Darn... I guess I'll just have to get out > there and try harder ;o) > > do not archive > > Oscar Zuniga > San Antonio, TX > mailto: taildrags@hotmail.com > website at http://www.flysquirrel.net > > _________________________________________________________________ > Exercise your brain! Try Flexicon. > http://games.msn.com/en/flexicon/default.htm?icid=flexicon_hmemailtaglinemarch07 > > > ________________________________ Message 9 _____________________________________ Time: 09:05:11 AM PST US From: "Terry Hall" Subject: Pietenpol-List: Ada Air Expo, Ada, OK Hello Piet flyers in North Texas, and Arkansas (or anywhere) The planning for the 2007 Ada Air Expo is coming along nicely. We are looking forward to another great day with a variety of warbird aircraft, aerobatic performers, static displays, radio controlled model aircraft, AND a sanctioned BBQ cookoff event. I do hope so that some Pietenpols can make the trip. I'm the airshow annoucer, and I would enjoy the chance of talking about your airplane with a captive audience. Check out the updated website: www.adaairexpo.com Terry Hall Airport Manager, City of Ada Sky Scout builder ________________________________ Message 10 ____________________________________ Time: 09:12:13 AM PST US Subject: Pietenpol-List: Re: Wing Rib Template Problem????? From: "Glenn Thomas" Humidity can change the dimensions of the paper. The changes to the scaling of the document when it's printed can also have an affect on the accuracy of the dimensions. When I plotted out the points on the jig I built and then compared to the full-scale rib plan there was a difference of about 3/4" in the length. I used MDF for the jig and haven't seen a noticable change due to humidity. -------- Glenn Thomas N????? http://www.flyingwood.com Read this topic online here: http://forums.matronics.com/viewtopic.php?p=104505#104505 ________________________________ Message 11 ____________________________________ Time: 09:41:11 AM PST US From: "Oscar Zuniga" Subject: Pietenpol-List: bouncy, bouncy, bouncy Roman wrote- >do you chop the throttle when you're just a little above ground? >I maintain about 1200 to 1500 rpm at touchdown, then close the >throttle once the wheels are rolling. this is on tarmac. My engine >is an A-65. Occasionally I hear the wheels rolling before I know I've >landed. Yes... typically, I back the throttle to idle when I'm in the flare. I do hold power down final, especially with a crosswind, but try to go to idle before the mains touch. I'll try reducing power rather than chopping it. I know it sounds like I abruptly chop power and that's what's causing me to bounce, but it isn't that drastic. The airplane is already settling to the runway when I come off the throttle. Another thing to experiment with! First it was the "push the nose over and Stuka dive to final", now it's holding power through the flare and touchdown. I'm sure I'll develop my own technique in time. For now, the biggest change from spam can days has been the "carrier landing" type of approach, like you do in Pitts and other fast planes. Once the power comes off on downwind, it's coming down and you sure don't fly a "square corners" approach. I like it. Oscar Zuniga San Antonio, TX mailto: taildrags@hotmail.com website at http://www.flysquirrel.net _________________________________________________________________ Exercise your brain! Try Flexicon. http://games.msn.com/en/flexicon/default.htm?icid=flexicon_hmemailtaglinemarch07 ________________________________ Message 12 ____________________________________ Time: 09:47:23 AM PST US From: "Dave Abramson" Subject: RE: Pietenpol-List: Re: Wing Rib Template Problem????? Hi Glenn, I built my ribs in the house and in the span of a month. My template was glued down and wood stops screwed thru it. My ribs are all the same size. I guess the only question I have is if the template was correct to begin with. Does "close enough" work in the case? Thanks, Dave -----Original Message----- From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com]On Behalf Of Glenn Thomas Sent: Monday, April 02, 2007 9:12 AM Subject: Pietenpol-List: Re: Wing Rib Template Problem????? Humidity can change the dimensions of the paper. The changes to the scaling of the document when it's printed can also have an affect on the accuracy of the dimensions. When I plotted out the points on the jig I built and then compared to the full-scale rib plan there was a difference of about 3/4" in the length. I used MDF for the jig and haven't seen a noticable change due to humidity. -------- Glenn Thomas N????? http://www.flyingwood.com Read this topic online here: http://forums.matronics.com/viewtopic.php?p=104505#104505 ________________________________ Message 13 ____________________________________ Time: 09:55:54 AM PST US Subject: RE: Pietenpol-List: Wing Rib Template Problem????? From: "Bill Church" Dave, This subject keeps resurfacing. Do a search of the archives and you'll find several discussions about it. In any case, the short answer is that the full size rib plan is a large photocopy, which may or may not be accurate to the plans. The copies are affected by humidity and paper shrinkage. The copy may have been accurate at the time (and location) it was printed, but in your shop, the size may be slightly smaller (or bigger). Just 1% shrinkage can result in a chord reduction of more than 1/2". Overall, the shrinkage shouldn't be a problem - the only real concern is the spar spacing, which should be 28 3/4" center-to-center. The main goal is a full set of ribs with a consistant profile. If your ribs are 1% bigger or smaller, it will not be a concern as long as they are all the same. Lots of builders report that they have built their ribs directly from the full size rib plan. The full size rib plan is handy for a few things: 1.) Shows where BHP introduced the vertical uprights adjacent to the spars (not shown in the 1934 plans) 2.) Can be scaled to locate the diagonals, since no dimensions are given in the plans 3.) Can also be scaled to determine sizes of 1/16" ply gussets. Bill C. ________________________________ Message 14 ____________________________________ Time: 02:28:53 PM PST US From: "Scott Knowlton" Subject: RE: Pietenpol-List: Wing Rib Template Problem????? Hey Bill. Please tell me that the proper measurement is 28 3/4 from the back of the front spar to the front of the back spar and not centre to centre - otherwise I have 16 beautiful albeit incorrect ribs in my shop!!! Scott K >From: "Bill Church" >To: >Subject: RE: Pietenpol-List: Wing Rib Template Problem????? >Date: Mon, 2 Apr 2007 12:54:16 -0400 > >Dave, > >This subject keeps resurfacing. Do a search of the archives and you'll >find several discussions about it. > >In any case, the short answer is that the full size rib plan is a large >photocopy, which may or may not be accurate to the plans. The copies are >affected by humidity and paper shrinkage. The copy may have been >accurate at the time (and location) it was printed, but in your shop, >the size may be slightly smaller (or bigger). Just 1% shrinkage can >result in a chord reduction of more than 1/2". Overall, the shrinkage >shouldn't be a problem - the only real concern is the spar spacing, >which should be 28 3/4" center-to-center. The main goal is a full set of >ribs with a consistant profile. If your ribs are 1% bigger or smaller, >it will not be a concern as long as they are all the same. Lots of >builders report that they have built their ribs directly from the full >size rib plan. > >The full size rib plan is handy for a few things: >1.) Shows where BHP introduced the vertical uprights adjacent to the >spars (not shown in the 1934 plans) >2.) Can be scaled to locate the diagonals, since no dimensions are >given in the plans >3.) Can also be scaled to determine sizes of 1/16" ply gussets. > > >Bill C. > > _________________________________________________________________ Win a trip for four to a concert anywhere in the world! http://www.mobilelivetour.ca/ ________________________________ Message 15 ____________________________________ Time: 03:01:41 PM PST US Subject: RE: Pietenpol-List: Wing Rib Template Problem????? From: "Bill Church" Hey Scott, I was just shutting the computer down to go home, and your e-mail popped up. I'm going by the plans, which show 1" spars, and the spacing is 27 3/4" from back side of front spar to front side of back spar (see attached JPG clip). That would translate into 28 3/4" center to center. Maybe you need to re-measure. Didn't you use one of the late Charlie Rubeck's ribs to build your jig? I can't imagine his ribs were all incorrect. Bill ________________________________ Message 16 ____________________________________ Time: 04:23:55 PM PST US From: "Roman Bukolt" Subject: Re: Pietenpol-List: bouncy, bouncy, bouncy Hey Oscar, I'll let you in on a little secret. My friend and mentor, former Corvair and TBM carrier pilot, Bill Rewey, who's logged over 500 hrs. in his Piet including four 1200 mi. trips to SNF, still bounces his landings. Not big bounces but still bouncy. So any day you make a "smooth" no-bounce landing, reach back and pat yourself on the back, and say "well done you old F--t". By the way, I don't know how much it would influence the landing, but Bill told me to keep only 15 lbs. pressure in my 6 x 6.00 tires. Sorta like a "dead" tennis ball or basket ball I suppose. Do not archive ----- Original Message ----- From: "Oscar Zuniga" Sent: Monday, April 02, 2007 11:40 AM Subject: Pietenpol-List: bouncy, bouncy, bouncy > > > Roman wrote- > >>do you chop the throttle when you're just a little above ground? >>I maintain about 1200 to 1500 rpm at touchdown, then close the >>throttle once the wheels are rolling. this is on tarmac. My engine >>is an A-65. Occasionally I hear the wheels rolling before I know I've >>landed. > > Yes... typically, I back the throttle to idle when I'm in the flare. I do > hold power down final, especially with a crosswind, but try to go to idle > before the mains touch. I'll try reducing power rather than chopping it. > I know it sounds like I abruptly chop power and that's what's causing me > to bounce, but it isn't that drastic. The airplane is already settling to > the runway when I come off the throttle. > > Another thing to experiment with! First it was the "push the nose over > and Stuka dive to final", now it's holding power through the flare and > touchdown. I'm sure I'll develop my own technique in time. For now, the > biggest change from spam can days has been the "carrier landing" type of > approach, like you do in Pitts and other fast planes. Once the power > comes off on downwind, it's coming down and you sure don't fly a "square > corners" approach. I like it. > > Oscar Zuniga > San Antonio, TX > mailto: taildrags@hotmail.com > website at http://www.flysquirrel.net > > _________________________________________________________________ > Exercise your brain! Try Flexicon. > http://games.msn.com/en/flexicon/default.htm?icid=flexicon_hmemailtaglinemarch07 > > > ________________________________ Message 17 ____________________________________ Time: 04:31:00 PM PST US From: "Roman Bukolt" Subject: Re: Pietenpol-List: Re: Wing Rib Template Problem????? FYI I've been having copies made by a Graphics business who have dealt with Archirects for at least the last 50 yrs. These copies are the Riblett 612 airfoil which are being requested by a number of Pietenpol builders. I had to reject the first dozen copies because they were a full inch shorter than the original pencil drawing. Since then each time I order copies, I insist that the overall length of the rib is 60 inches plus or minus 1/16". Roman Bukolt NX20795 do not archive ----- Original Message ----- From: "Glenn Thomas" Sent: Monday, April 02, 2007 11:12 AM Subject: Pietenpol-List: Re: Wing Rib Template Problem????? > > > Humidity can change the dimensions of the paper. The changes to the > scaling of the document when it's printed can also have an affect on the > accuracy of the dimensions. When I plotted out the points on the jig I > built and then compared to the full-scale rib plan there was a difference > of about 3/4" in the length. I used MDF for the jig and haven't seen a > noticable change due to humidity. > > -------- > Glenn Thomas > N????? > http://www.flyingwood.com > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=104505#104505 > > > ________________________________ Message 18 ____________________________________ Time: 05:01:21 PM PST US From: Tim Verthein Subject: Pietenpol-List: EAA and Montana I consider myself to be basically cheap, and as much as I like to spend money, I have to make sure I'm getting maximum value for my money. I feel I get this with my EAA membership. Besides supporting a big organization that is very influential in keeping people like us in the air, there are other immediate tangible benefits. As Oshkosh attendees, the substantial discount you receive on admission just about makes up for about half our membership cost. You also get which ever magazine you choose, be it Sport Pilot or Sport Aviation, etc, and we all know a magazine subscription is worth about $25 bucks itself. So on a dollar for dollar basis you come out good, AND you support aviation in all it's different colors, that plus all the good stuff lurking in the members section of the EAA web site. To me, it's money well spent. The Piet in Roundup Montana intrigues me. My wife is from Roundup, Montana, and her step-father was longtime FBO of the Roundup Airport. I don't know what he may know about the Piet, but he's long since retired, and for whatever reason dosen't much like to talk about his flying days (although, when you get him in the right mood he does have great tales to tell). He also did lots of missionary flying in 3rd world countries. There was a writeup on the Roundup Piet in the BPA newsletter at the beginning of the year. I'd like to track them down and see if I could get a copy of an historic photo or two to add to my office wall. Next time we visit Roundup (probably this summer) you can bet I'll be checking things out! And I'll be sending off a check to donate to the restoration effort. As far as building our plane I'm accumulating knowledge, plans, and tools. Won't be long and I'll be creating a rib jig. It will be NX3746 (already reserved a number). If we ever get rid of this cold and rain up here, I can get to work in the garage shop! tim in Bovey == You *can* repair a flip-flop with a capacitor! == Get your own web address. http://smallbusiness.yahoo.com/domains/?p=BESTDEAL ________________________________ Message 19 ____________________________________ Time: 05:14:43 PM PST US From: "Dick Navratil" Subject: Pietenpol-List: Mont. Piet First of the checks came in today, thanks guys. I don't want to make too much out of this, but I would like to send off whatever we can gather by next Wed the 11th as I am leaving the 12th to set up for Sun n Fun. Dick N. ________________________________ Message 20 ____________________________________ Time: 05:58:45 PM PST US From: "walt evans" Subject: Re: Pietenpol-List: bouncy, bouncy, bouncy I asked a fellow, Damian, who's a flight instructor the next airport over. He's an instructor who has a school that teaches Alaskan Bush pilot techniques. Very good instructor who talks down to earth. His claim to fame was to teach Harrison Ford tailwheel for that old movie. Anyway.....his advice to me was to , if comming down at idle, to use a little power to lengthen the flare. This way you decide when you'll touch down. Also on a light plane like a Piet,,,be ready on the flare, if a crosswind catches you, to give a burp of power. The blast across the tail improves the rudder control ten fold. Works like a charm. PS,,, 59 and I still LOVE to learn Walt Evans NX140DL "No one ever learned anything by talking" ----- Original Message ----- From: "Oscar Zuniga" Sent: Monday, April 02, 2007 12:40 PM Subject: Pietenpol-List: bouncy, bouncy, bouncy > > > Roman wrote- > >>do you chop the throttle when you're just a little above ground? >>I maintain about 1200 to 1500 rpm at touchdown, then close the >>throttle once the wheels are rolling. this is on tarmac. My engine >>is an A-65. Occasionally I hear the wheels rolling before I know I've >>landed. > > Yes... typically, I back the throttle to idle when I'm in the flare. I do > hold power down final, especially with a crosswind, but try to go to idle > before the mains touch. I'll try reducing power rather than chopping it. > I know it sounds like I abruptly chop power and that's what's causing me > to bounce, but it isn't that drastic. The airplane is already settling to > the runway when I come off the throttle. > > Another thing to experiment with! First it was the "push the nose over > and Stuka dive to final", now it's holding power through the flare and > touchdown. I'm sure I'll develop my own technique in time. For now, the > biggest change from spam can days has been the "carrier landing" type of > approach, like you do in Pitts and other fast planes. Once the power > comes off on downwind, it's coming down and you sure don't fly a "square > corners" approach. I like it. > > Oscar Zuniga > San Antonio, TX > mailto: taildrags@hotmail.com > website at http://www.flysquirrel.net > > _________________________________________________________________ > Exercise your brain! Try Flexicon. > http://games.msn.com/en/flexicon/default.htm?icid=flexicon_hmemailtaglinemarch07 > > > ________________________________ Message 21 ____________________________________ Time: 06:29:09 PM PST US From: johnwoods@westnet.com.au Subject: Re: Pietenpol-List: Re: Wing Rib Template Problem????? Roman, I plotted the Riblett 612 airfoil from the co-ordinates you sent me (thank you very much for that)on mylar and had the printers copy onto mylar. They all came out within 1/16" of the 60" chord. Mylar is the plastic drafting we used to use in the days when drawings were hand drafted. It is stable and doesn't stretch or shrink significantly with temperature variations and humidity. Also it is more durable than paper. I was going to experiment with it to see if epoxy sticks to it or not. If not then will build the ribs directly on top of the pattern. There are at least three of us here in Western Australia who are going to use the 612 airfoil. Apologies to the purists, but we like the idea of improved performance promised by the 612. JohnW Perth Western Australia ---- Original Message ---- From: conceptmodels@tds.net Subject: Re: Pietenpol-List: Re: Wing Rib Template Problem????? > > >FYI >I've been having copies made by a Graphics business who have dealt >with >Archirects for at least the last 50 yrs. >These copies are the Riblett 612 airfoil which are being requested by >a >number of Pietenpol builders. >I had to reject the first dozen copies because they were a full inch >shorter >than the original pencil drawing. >Since then each time I order copies, I insist that the overall length >of the >rib is 60 inches plus or minus 1/16". > >Roman Bukolt NX20795 > >do not archive >----- Original Message ----- >From: "Glenn Thomas" >To: >Sent: Monday, April 02, 2007 11:12 AM >Subject: Pietenpol-List: Re: Wing Rib Template Problem????? > > >> >> >> Humidity can change the dimensions of the paper. The changes to >the >> scaling of the document when it's printed can also have an affect >on the >> accuracy of the dimensions. When I plotted out the points on the >jig I >> built and then compared to the full-scale rib plan there was a >difference >> of about 3/4" in the length. I used MDF for the jig and haven't >seen a >> noticable change due to humidity. >> >> -------- >> Glenn Thomas >> N????? >> http://www.flyingwood.com >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=104505#104505 >> >> >> >> >> >> >> >> >> >> >> > > ________________________________ Message 22 ____________________________________ Time: 08:57:44 PM PST US From: "Steve Ruse" Subject: RE: Pietenpol-List: Ada Air Expo, Ada, OK I flew my plane (GN-1) into Ada last weekend, I met some friends there who also flew in for BBQ down the street at Bob's BBQ. Ada's terminal is a nice facility, well kept, with an internet enabled computer for weather & other information. They also have a nice comfortable crew lounge, and a nice, clean/well kept crew car (a Chevy Suburban, great for getting a group of pilots to & from Bobs or anywhere else in town. The guys at the desk were very helpful and friendly, they gave us all bottled water when we were departing. I'll be back again. I was planning on making the airshow, but a friend's wedding happens to fall on the same day. He is a pilot, he'd understand if I missed the wedding. Terry, I'm sure we'll be back out there before too long, I'd love to see your project sometime! Steve Ruse Norman, OK _____ From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Terry Hall Sent: Monday, April 02, 2007 11:05 AM Subject: Pietenpol-List: Ada Air Expo, Ada, OK Hello Piet flyers in North Texas, and Arkansas (or anywhere) The planning for the 2007 Ada Air Expo is coming along nicely. We are looking forward to another great day with a variety of warbird aircraft, aerobatic performers, static displays, radio controlled model aircraft, AND a sanctioned BBQ cookoff event. I do hope so that some Pietenpols can make the trip. I'm the airshow annoucer, and I would enjoy the chance of talking about your airplane with a captive audience. Check out the updated website: www.adaairexpo.com Terry Hall Airport Manager, City of Ada Sky Scout builder ________________________________ Message 23 ____________________________________ Time: 09:08:14 PM PST US From: "Scott Knowlton" Subject: RE: Pietenpol-List: Wing Rib Template Problem????? Just came back from the shop. Both Charlie's rib and the 16 I copied from it are 27 3/4 inches from the back of the front spar to the front of the back spar. I guess we're talking the same language. The heartrate is starting to slow down now... Scott >From: "Bill Church" >To: >Subject: RE: Pietenpol-List: Wing Rib Template Problem????? >Date: Mon, 2 Apr 2007 18:01:08 -0400 > >Hey Scott, > >I was just shutting the computer down to go home, and your e-mail popped >up. >I'm going by the plans, which show 1" spars, and the spacing is 27 3/4" >from back side of front spar to front side of back spar (see attached >JPG clip). >That would translate into 28 3/4" center to center. >Maybe you need to re-measure. >Didn't you use one of the late Charlie Rubeck's ribs to build your jig? >I can't imagine his ribs were all incorrect. > >Bill > > ><< sparspacing.JPG >> _________________________________________________________________ Win a trip for four to a concert anywhere in the world! http://www.mobilelivetour.ca/ ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message pietenpol-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Pietenpol-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/pietenpol-list Browse Digests http://www.matronics.com/digest/pietenpol-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.