Brodhead Pietenpol Association

Original Posted By: Earl Myers
Subject: Pietenpol-List: RE: Toe in, toe out ?? alignment>Howard is correct with regards to toe in/out. With the Super Ace however,>you need to be concerned with the camber angle. When built to the plans,the>outrigger gear has a tremendous amount of camber when unloaded and if you>touch down with a wing low, you can get into a situation where the thewheel>gets tucked under and drags the side of your wheel rather than rolling. I>speak from experience, I messed up my Super Ace pretty bad a couple ofweeks>ago because of this quirk.>>-----Original Message----->Sent: Sunday, June 13, 1999 7:54 AM>To: Pietenpol Discussion>Subject: Re: Toe in, toe out ?? alignment>>>Bob:> As nobody has yet responded to this post let me give my two cents>worth. In an article by Marvin Hoppelworth in an old edition of Sport>Aviation discussing this matter Marvin recommends 1-2 degrees toe out.>The theory (and it holds true in application) is that when you turn to>the right on the ground the ground pressure on the left wheel>increases. If this wheel is toed in it will be pointing slightly in>the direction of the turn (to the right). This wheel now has more>traction and thus more directional influence and will tend to point>you tighter into your turn. The result is what is called oversteer in>the automotive world, and makes something difficult to control. If on>the other hand the wheel is toed out it will tend to pull you back>toward straight which results in a positive stability.> This applies only to tail draggers. On nose draggers the>situation is reversed just as steering in a vehicle with rear steering>is reversed....> I hope this helps understand the matter. I personally would use>very little toe out... just enough to be sure that toe in did not>>-----Original Message----->From: oil can >To: Pietenpol Discussion >Date: Thursday, June 10, 1999 5:41 PM>Subject: Toe in, toe out ?? alignment>>>>I'm in the process of welding in the axles on my super ace, and am>wondering>>about the toe in/out alignment. I've think that I have decided on a>toe out,>>but how many degrees from datum should the axles be toed?>>>>OCB>>>>>>>>________________________________________________________________________________

Original Posted By: Mike Cunningham
Subject: Pietenpol-List: RE: Toe in, toe out ?? alignment>Howard is correct with regards to toe in/out. With the Super Ace however,>you need to be concerned with the camber angle. When built to the plans,the>outrigger gear has a tremendous amount of camber when unloaded and if you>touch down with a wing low, you can get into a situation where the thewheel>gets tucked under and drags the side of your wheel rather than rolling. I>speak from experience, I messed up my Super Ace pretty bad a couple ofweeks>ago because of this quirk.>>-----Original Message----->Sent: Sunday, June 13, 1999 7:54 AM>To: Pietenpol Discussion>Subject: Re: Toe in, toe out ?? alignment>>>Bob:> As nobody has yet responded to this post let me give my two cents>worth. In an article by Marvin Hoppelworth in an old edition of Sport>Aviation discussing this matter Marvin recommends 1-2 degrees toe out.>The theory (and it holds true in application) is that when you turn to>the right on the ground the ground pressure on the left wheel>increases. If this wheel is toed in it will be pointing slightly in>the direction of the turn (to the right). This wheel now has more>traction and thus more directional influence and will tend to point>you tighter into your turn. The result is what is called oversteer in>the automotive world, and makes something difficult to control. If on>the other hand the wheel is toed out it will tend to pull you back>toward straight which results in a positive stability.> This applies only to tail draggers. On nose draggers the>situation is reversed just as steering in a vehicle with rear steering>is reversed....> I hope this helps understand the matter. I personally would use>very little toe out... just enough to be sure that toe in did not>>-----Original Message----->From: oil can >To: Pietenpol Discussion >Date: Thursday, June 10, 1999 5:41 PM>Subject: Toe in, toe out ?? alignment>>>>I'm in the process of welding in the axles on my super ace, and am>wondering>>about the toe in/out alignment. I've think that I have decided on a>toe out,>>but how many degrees from datum should the axles be toed?>>>>OCB>>>>>>>>________________________________________________________________________________

Original Posted By: John Fay
List Members,I am new to the list only because I have an opportunity to purchase a completed Piet that was built in 92. It has a 65hp Cont (69 hours since overhaul), looks great, and the gent is askin 10.5K.Is this a good price? I don't have a tail dragger endorsement on my certificate and realize I will need type training. Is the Piet difficult to fly? What are the flight characteristics? What is the performance capabilities (stall speed, cruise speed, rate of climb, etc). I would like to hear from anyone with any information/advise on the Piet. Thanks in advance.RonYorktown, VA>From: "Lightsey, Mark - TP2MAL" >Reply-To: Pietenpol Discussion >To: Pietenpol Discussion >Subject: RE: Toe in, toe out ?? alignment>Date: Fri, 11 Jun 1999 08:30:50 -0700>>Howard is correct with regards to toe in/out. With the Super Ace however,>you need to be concerned with the camber angle. When built to the plans, >the>outrigger gear has a tremendous amount of camber when unloaded and if you>touch down with a wing low, you can get into a situation where the the >wheel>gets tucked under and drags the side of your wheel rather than rolling. I>speak from experience, I messed up my Super Ace pretty bad a couple of >weeks>ago because of this quirk.>>-----Original Message----->Sent: Sunday, June 13, 1999 7:54 AM>To: Pietenpol Discussion>Subject: Re: Toe in, toe out ?? alignment>>>Bob:> As nobody has yet responded to this post let me give my two cents>worth. In an article by Marvin Hoppelworth in an old edition of Sport>Aviation discussing this matter Marvin recommends 1-2 degrees toe out.>The theory (and it holds true in application) is that when you turn to>the right on the ground the ground pressure on the left wheel>increases. If this wheel is toed in it will be pointing slightly in>the direction of the turn (to the right). This wheel now has more>traction and thus more directional influence and will tend to point>you tighter into your turn. The result is what is called oversteer in>the automotive world, and makes something difficult to control. If on>the other hand the wheel is toed out it will tend to pull you back>toward straight which results in a positive stability.> This applies only to tail draggers. On nose draggers the>situation is reversed just as steering in a vehicle with rear steering>is reversed....> I hope this helps understand the matter. I personally would use>very little toe out... just enough to be sure that toe in did not>>-----Original Message----->From: oil can >To: Pietenpol Discussion >Date: Thursday, June 10, 1999 5:41 PM>Subject: Toe in, toe out ?? alignment>>> >I'm in the process of welding in the axles on my super ace, and am>wondering> >about the toe in/out alignment. I've think that I have decided on a>toe out,> >but how many degrees from datum should the axles be toed?> >> >OCB> >> >> >>________________________________________________________________________________