---------------------------------------------------------- Pietenpol-List Digest Archive --- Total Messages Posted Sun 11/16/08: 12 ---------------------------------------------------------- Today's Message Index: ---------------------- 0. 12:47 AM - What's My Contribution Used For? (Matt Dralle) 1. 05:26 AM - Machine gun plans (Richard Carden) 2. 01:51 PM - Re: Lockable Tailwheels (Jack Phillips) 3. 03:12 PM - No nails in spars (Michael Perez) 4. 04:07 PM - lockable tailwheels (Richard Schreiber) 5. 05:57 PM - stall speeds (Oscar Zuniga) 6. 06:21 PM - Re: stall speeds (Skip Gadd) 7. 06:23 PM - Re: Machine gun plans (Darrel Jones) 8. 07:17 PM - Re: No nails in spars (gcardinal) 9. 08:07 PM - elevator trim (Oscar Zuniga) 10. 08:12 PM - Re: stall speeds (Jeff Boatright) 11. 10:46 PM - Re: Machine gun plans (Clif Dawson) ________________________________ Message 0 _____________________________________ Time: 12:47:17 AM PST US From: Matt Dralle Subject: Pietenpol-List: What's My Contribution Used For? Dear Listers, Some have asked, "What's my Contribution used for?" and that's a good question. Here are just a few examples of what your direct List support enables. It provides for the very expensive, commercial-grade T1 Internet connection used on the List insuring maximum performance and minimal contention when accessing List services. It pays for the regular system hardware and software upgrades enabling the highest performance possible for services such as the Archive Search Engine, List Browser, and Forums. It pays for 19+ years worth of online archive data available for instant random search and access. And, it offsets the many hours spent writing, developing, and maintaining the custom applications that power this List Service such as the List Browse, Search Engine, Forums, Wiki and PhotoShare. But most importantly, your List Contribution enables a forum where you and your peers can communicate freely in an environment that is free from moderation, censorship, advertising, commercialism, SPAM, and computer viruses. How many places on the Internet can you make all those statements these days? It is YOUR CONTRIBUTION that directly enables these many aspects of these valuable List services. Please support it today with your List Contribution. Its one of the best investments you can make in your Sport... List Contribution Web Site: http://www.matronics.com/contribution Thank you for your support! Matt Dralle Email List Administrator ________________________________ Message 1 _____________________________________ Time: 05:26:45 AM PST US From: Richard Carden Subject: Pietenpol-List: Machine gun plans I've had no success in reaching the gentleman in Kansas City who reportedly has a booklet or set of instructions for making the propane machine gun as per the kcdawnpatrol website. If anyone has these instructions and is finished with them, I'd be happy to buy them. Thanks, Dick Carden ________________________________ Message 2 _____________________________________ Time: 01:51:39 PM PST US From: "Jack Phillips" Subject: RE: Pietenpol-List: Lockable Tailwheels You are correct, Lloyd. SNJ's and AT-6's had true locking tailwheels that, once locked, were unlocked by pushing the stick full forward. I believe the P-51 had the same arrangement. I believe DC-3's also had a tailwheel that could be locked straight ahead for takeoff and landing, then unlocked to facilitate low speed ground handling. Jack Phillips NX899JP _____ From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Lloyd Smith Sent: Saturday, November 15, 2008 7:40 PM Subject: Re: Pietenpol-List: Lockable Tailwheels I think this clarifies some confusion, because there were aircraft that had true "locking tailwheels" that locked in the straight forward position when the stick was held in a certain position (something makes me think full forward). Anyone with high horse power tailwheel time can probably clarify this. Your style of "locking tailwheel" can be forced out of it's detent by a particularly strong gust, just the same as pushing sideways on the tail in order to get it to swivel into position to push into the hangar. On Sat, Nov 15, 2008 at 7:23 PM, Jim Ash wrote: For clarification's sake, my Scott tailwheel is called a locking tailwheel. By that definition, there is an additional moving mechanism between the wheel and the bellcrank. The 'locked' state means that this mechanism is engaged and locks the bellcrank to the wheel, becoming a steerable tailwheel. The 'unlocked' position disengages the bellcrank from the wheel and allows it to caster a full 360 degrees. 'Full 360 degrees' is actually kind of a lie. If the tailwheel is castered around to the straight rear positon, it will automatically lock again. This is how to get it to lock. To unlock it requires side pressure to 'break it loose'. Sometimes snapping the pedals quickly (with the wheel on the ground) will unlock it also. I suspect there's a littel ball-and-sprint detent mechanism inside it. Locked, by this definition does not imply 'locked straight forward' so much as 'locked to the bellcrank'. Is this everybody else's understanding? Jim Ash -----Original Message----- >From: Richard Schreiber >Sent: Nov 15, 2008 6:30 PM >To: pietenpol-list@matronics.com >Subject: Re: Pietenpol-List: Lockable Tailwheels > >I have only had 1 landing in a tailwheel aircraft, a Luscomb about a month ago. Due to my inexperience in tailwheel landings what I was wondering (or maybe not understanding) is this. I plan on installing a steerable tailwheel. Do I need to have or is it desirable to have the tailwheel lockable. Will I gain that much stability in crosswind takeoffs and landings if the tailwheel will lock? I am not that concerned about having the wheel be full castering for ground maneuvering when I need to put the Piet in a hangar. > >Rick Schreiber >----- Original Message ----- >From: shad bell >To: pietenpol-list@matronics.com >Sent: 11/15/2008 5:13:05 PM >Subject: Re: Pietenpol-List: Lockable Tailwheels > > >We flew NX92GB for the 1st 2 years with a fixed non steerable t/w. Taxi was a "think 5 min ahead" type of ordeal. It was fine on grass, but could get dicy on a paved runway with a crosswind. All was well untill that transition time where the rudder became inefective, but you still had forward speed, and it would weather vane. The brakes are not really strong so a blast of power and rudder was required to keep it on the runway. The 1st time I experianced it I had to think quickly, after flying champs I was used to the tailwheel traction to steer in that situation. I would recomend at least a steerable T/W for your piet, unless you plan on never landing on hard surfaced runways. > >Shad > > ________________________________ Message 3 _____________________________________ Time: 03:12:57 PM PST US From: Michael Perez Subject: Pietenpol-List: No nails in spars Anyone flying a Piet. that has no nails on the vertical rib supports to the spars?- The plan calls for them, but I know we have omitted other shown nails, (gussets) so why not these? ________________________________ Message 4 _____________________________________ Time: 04:07:53 PM PST US From: "Richard Schreiber" Subject: Pietenpol-List: lockable tailwheels thanks to everyone who responded about lockable tailwheels. I finally understand the differences. I plan on building my own (with steering) similar to what Don Emch and Greg Cardinal/Dale Johnson have done. Rick Schreiber Valaparaiso IN Richard Schreiber lmforge@earthlink.net ________________________________ Message 5 _____________________________________ Time: 05:57:43 PM PST US From: Oscar Zuniga Subject: Pietenpol-List: stall speeds Howdy=2C Pietenpolers- In preparation for experimenting with vortex generators on the wings and ho rizontal stabilizer of 41CC (close your ears=2C purists!)=2C I went up this afternoon to run a stall se ries to get a rough idea of what the stall speeds are for my airplane. It was a cool afternoon with a light breeze=2C just me aboard and half a tank of fuel. That's as scientific as I'm going to get up to this p oint. I took the airplane up to about 2500 ft. (climbed like a rocket in the cool air) and did stalls power -off and power-on. The pitot gets a little crazy during power-on stalls due to the extreme angle and the propwash=2C so the airspeed needle jumps around quite a bit and I'm sure the readings aren't very accur ate=2C but I'll get relative numbers "before and after" anyway. Power-off stalls happen at 37-38 MPH and power-on happen at about 32-34 ind icated. The airplane has to be stalled briskly or it will just go nose-high and mush without muc h of a break at the stall. The nose will then bob up and down in and out of stall. Bringing the nose up crisply and quickly will bring it to a more noticeable stall. Rudders are required to keep the nose straight. Oscar Zuniga Air Camper NX41CC San Antonio=2C TX mailto: taildrags@hotmail.com website at http://www.flysquirrel.net ________________________________ Message 6 _____________________________________ Time: 06:21:46 PM PST US From: "Skip Gadd" Subject: RE: Pietenpol-List: stall speeds Oscar, P. F. Beck has vortex generators on his Corvair Piet. He told me they reduced the stall enough that he thought they were worthwhile, I don't remember the numbers. Skip ----- Original Message ----- From: Oscar Zuniga Sent: 11/16/2008 9:01:09 PM Subject: Pietenpol-List: stall speeds Howdy, Pietenpolers- In preparation for experimenting with vortex generators on the wings and horizontal stabilizer of 41CC (close your ears, purists!), I went up this afternoon to run a stall series to get a rough idea of what the stall speeds are for my airplane. It was a cool afternoon with a light breeze, just me aboard and half a tank of fuel. That's as scientific as I'm going to get up to this point. I took the airplane up to about 2500 ft. (climbed like a rocket in the cool air) and did stalls power-off and power-on. The pitot gets a little crazy during power-on stalls due to the extreme angle and the propwash, so the airspeed needle jumps around quite a bit and I'm sure the readings aren't very accurate, but I'll get relative numbers "before and after" anyway. Power-off stalls happen at 37-38 MPH and power-on happen at about 32-34 indicated. The airplane has to be stalled briskly or it will just go nose-high and mush without much of a break at the stall. The nose will then bob up and down in and out of stall. Bringing the nose up crisply and quickly will bring it to a more noticeable stall. Rudders are required to keep the nose straight. Oscar Zuniga Air Camper NX41CC San Antonio, TX mailto: taildrags@hotmail.com website at http://www.flysquirrel.net ________________________________ Message 7 _____________________________________ Time: 06:23:34 PM PST US From: Darrel Jones Subject: Re: Pietenpol-List: Machine gun plans Richard Carden wrote: > > > I've had no success in reaching the gentleman in Kansas City who > reportedly has a booklet or set of instructions for making the propane > machine gun as per the kcdawnpatrol website. If anyone has these > instructions and is finished with them, I'd be happy to buy them. > Thanks, Dick Carden Richard and the group, I am also looking for the propane machine gun plans. I didn't want to re-invent the wheel trying to come up with one for my airplane. Please let me know what you find. Thanks, Darrel Jones, Pfeifer Sport NX154JP Sonoma, CA ________________________________ Message 8 _____________________________________ Time: 07:17:29 PM PST US From: "gcardinal" Subject: Re: Pietenpol-List: No nails in spars Michael, The ribs on NX18235 are attached to the spar with T-88, not nails. I think this far more common than nailing the ribs to the spars. Greg Cardinal ----- Original Message ----- From: Michael Perez To: pietenpol-list@matronics.com Sent: Sunday, November 16, 2008 5:12 PM Subject: Pietenpol-List: No nails in spars Anyone flying a Piet. that has no nails on the vertical rib supports to the spars? The plan calls for them, but I know we have omitted other shown nails, (gussets) so why not these? 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D ________________________________ Message 9 _____________________________________ Time: 08:07:35 PM PST US From: Oscar Zuniga Subject: Pietenpol-List: elevator trim I took a few pictures of my elevator trim system and put them up on a webpa ge today=2C at http://www.flysquirrel.net/piets/trim.htmlOscar Zuniga Air Camper NX41CC San Antonio=2C TX mailto: taildrags@hotmail.com website at http://www.flysquirrel.net ________________________________ Message 10 ____________________________________ Time: 08:12:58 PM PST US From: Jeff Boatright Subject: Re: Pietenpol-List: stall speeds Oscar, We, too, plan to install VGs. Did you make yours, or buy 'em? Our power-off stall with two on board and 12 gal in the fuselage tank is 38-40 mph. Don't know what the power-on stall is - I keep my eyes closed for those! =-O There is a definite break with either type of stall, no need to bring the nose up crisply. Heavy right wing drop, very consistent. I put both those down to the aluminum wrap used for the leading edge (rather than the plywood skin called for in the plans). Really a bad modifications - gives a very lumpy leading edge. One of the few mistakes the original builder made, IMO. Jeff >Howdy, Pietenpolers- >... > >Power-off stalls happen at 37-38 MPH and power-on happen at about >32-34 indicated. The airplane >has to be stalled briskly or it will just go nose-high and mush >without much of a break at the stall. >The nose will then bob up and down in and out of stall. Bringing >the nose up crisply and quickly will >bring it to a more noticeable stall. Rudders are required to keep >the nose straight. > >Oscar Zuniga >Air Camper NX41CC >San Antonio, TX >mailto: taildrags@hotmail.com >website at http://www.flysquirrel.net ________________________________ Message 11 ____________________________________ Time: 10:46:18 PM PST US From: "Clif Dawson" Subject: Re: Pietenpol-List: Machine gun plans Try this; http://www.kcdawnpatrol.org/machine-gun.htm Clif > I am also looking for the propane machine gun plans. I didn't want to > re-invent the wheel trying to come up with one for my airplane. Please > let me know what you find. > > Thanks, > Darrel Jones, ------------------------------------------------------------------------------------- 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.