Original Posted By: jimvan1(at)juno.com (James T. VanDervort)
Working away at my terminal here, the mind wanders from work and...A question pops up...Does anybody on the list know if the Model A's vertical location is dictated by the thrust line or propeller length requirements, or is it that high simply to get the mag mount above the top longeron level.If you used a side mount mag a'la Funk, could you move the engine downa couple inches and still have propeller clearance and reasonableflight characteristics? The idea being to get the top of the engineout of the way as much as possible, and in conjunction with a chin mount rad, get the same forward visibility as with an aircraft engine.Comments?? ________________________________________________________________________________
Pietenpol-List: Re: propeller thrust line
Pietenpol-List: Re: propeller thrust line
Original Posted By: baileys(at)ktis.net (Robert M. Bailey)
My only comment would be is if you start changing things like that, youwill no longer have a Pietenpol. You can make a good airplane if you change the plans,but you will make a better one if you don't change the plans. I guess thepoint I am trying to make is "don't change the plans".________________________________________________________________________________
My only comment would be is if you start changing things like that, youwill no longer have a Pietenpol. You can make a good airplane if you change the plans,but you will make a better one if you don't change the plans. I guess thepoint I am trying to make is "don't change the plans".________________________________________________________________________________
Pietenpol-List: Re: propeller thrust line
Original Posted By: SRXJimL(at)aol.com
John Kahn wrote:> > Working away at my terminal here, the mind wanders from work and...> > A question pops up...> > Does anybody on the list know if the Model A's vertical location is> dictated by the thrust line or propeller length requirements, or is> it that high simply to get the mag mount above the top longeron level.> > If you used a side mount mag a'la Funk, could you move the engine down> a couple inches and still have propeller clearance and reasonable> flight characteristics? The idea being to get the top of the engine> out of the way as much as possible, and in conjunction with a chin> mount rad, get the same forward visibility as with an aircraft engine.> > Comments??A the seminar on the Model A held at Brodhead this year Lowell Franksaid the the Piet didn't seem to be sensitive to changes in the line ofthrust. If you convert to a full pressure lube system it is possible toinvert the Model A a'la Funk.
Also in a recent issue of the BPANewsletter there was a V-8 powered Piet, I believe it had a lower thrustline.Bob B.________________________________________________________________________________
John Kahn wrote:> > Working away at my terminal here, the mind wanders from work and...> > A question pops up...> > Does anybody on the list know if the Model A's vertical location is> dictated by the thrust line or propeller length requirements, or is> it that high simply to get the mag mount above the top longeron level.> > If you used a side mount mag a'la Funk, could you move the engine down> a couple inches and still have propeller clearance and reasonable> flight characteristics? The idea being to get the top of the engine> out of the way as much as possible, and in conjunction with a chin> mount rad, get the same forward visibility as with an aircraft engine.> > Comments??A the seminar on the Model A held at Brodhead this year Lowell Franksaid the the Piet didn't seem to be sensitive to changes in the line ofthrust. If you convert to a full pressure lube system it is possible toinvert the Model A a'la Funk.
Also in a recent issue of the BPANewsletter there was a V-8 powered Piet, I believe it had a lower thrustline.Bob B.________________________________________________________________________________