Original Posted By: "Steve Eldredge"
Pietenpol-List: Prop Hub Key
RE: Pietenpol-List: Prop Hub Key
Original Posted By: owner-pietenpol-list-server(at)matronics.com
Hi Steve,I just bought one from Fresno AirParts. Give them a call. They are usuallythe inside front page of Trade-a-Plane.Jack -----Original Message-----
Hi Steve,I just bought one from Fresno AirParts. Give them a call. They are usuallythe inside front page of Trade-a-Plane.Jack -----Original Message-----
Re: Pietenpol-List: Prop Hub Key
Original Posted By: "D.Dale Johnson"
Subject: Re: Pietenpol-List: Prop Hub Key
Subject: Re: Pietenpol-List: Prop Hub Key
RE: Pietenpol-List: Prop Hub Key
Original Posted By: "Steve Eldredge"
Re: Pietenpol-List: Prop Hub Key
Original Posted By: "Steve Eldredge"
Steve,The two major functions of keys are: 1. To provide alignment between twoparts and 2. to provide for the ability to "shear" when loads exceed valueswhich will damage parts "downstream". They can also be useful intransferring loads but this is not a primary function. This being true donot use hardened keys.Jon Botsford----- Original Message -----
Steve,The two major functions of keys are: 1. To provide alignment between twoparts and 2. to provide for the ability to "shear" when loads exceed valueswhich will damage parts "downstream". They can also be useful intransferring loads but this is not a primary function. This being true donot use hardened keys.Jon Botsford----- Original Message -----
Re: Pietenpol-List: Prop Hub Key
Original Posted By: "Steve Eldredge"
Steve,Been in the "hands on" part of power transmission for 24 years. Even onmotors up to 8,000 hp. None of the keys are hardened. Even on the StatenIsland Ferry. I would assume that the key is mild steel.Someone could take their key and drag a file across it, bet it digs in justfine.waltNX140DL----- Original Message -----
Steve,Been in the "hands on" part of power transmission for 24 years. Even onmotors up to 8,000 hp. None of the keys are hardened. Even on the StatenIsland Ferry. I would assume that the key is mild steel.Someone could take their key and drag a file across it, bet it digs in justfine.waltNX140DL----- Original Message -----
RE: Pietenpol-List: Prop Hub Key
Original Posted By: owner-pietenpol-list-server(at)matronics.com
Steve,The key needs to be pretty hard. It is the main thing transmitting thepower pulses from the crankshaft to the propeller (although friction on theshaft taper will transmit a lot). If it is soft and begins to smear, youwill have hard time ever removing your prop.Jack -----Original Message-----
Steve,The key needs to be pretty hard. It is the main thing transmitting thepower pulses from the crankshaft to the propeller (although friction on theshaft taper will transmit a lot). If it is soft and begins to smear, youwill have hard time ever removing your prop.Jack -----Original Message-----
RE: Pietenpol-List: Prop Hub Key
Original Posted By: "Steve Eldredge"
Does anyone on the list know what happened to the Volmer Sportsmanamphibian? The last I heard was that someone around Titusville, FL hadgotten the rights from the Volmer estate.DickG in Ft. Myers, FL (painting the GN-1)________________________________________________________________________________Subject: RE: Pietenpol-List: Prop Hub KeyDate: Wed, 28 Aug 2002 13:38:24 -0600
Does anyone on the list know what happened to the Volmer Sportsmanamphibian? The last I heard was that someone around Titusville, FL hadgotten the rights from the Volmer estate.DickG in Ft. Myers, FL (painting the GN-1)________________________________________________________________________________Subject: RE: Pietenpol-List: Prop Hub KeyDate: Wed, 28 Aug 2002 13:38:24 -0600
Re: Pietenpol-List: Prop Hub Key
Original Posted By: "Steve Eldredge"
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RE: Pietenpol-List: Prop Hub Key
Original Posted By: "Steve Eldredge"
Re: Pietenpol-List: Prop Hub Key
Original Posted By: "Steve Eldredge"
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> > Re: Pietenpol-List: Prop Hub Key
Original Posted By: del magsam
RE: Pietenpol-List: Prop Hub Key
Original Posted By: "Steve Eldredge"
Doug,Yes, I have carved a new prop for the Piet and even got a racing prop carvedfor his Formula 1 racer that he is taking to Reno next month.The Piet is flying fine and I am now debugging a few of the engine problems.This morning I will start the formal flight tests to develop some numbersthat I can rely on, rates of climb at altitude, stall speed, speeds atvarious power settings and hopefully if there is time and the air doesn'tget too rough, some fuel consumption figures. All of these numbers willhave to be developed between 9 and 11 thousand feet because of our fieldelevation (7946 ft). Gets too cold to find out service ceiling right now.Will let the list know the results in the fall. We are leaving for vacationduring September.Cordially,John Dilatush NX114DSalida, Colorado________________________________________________________________________________Subject: RE: Pietenpol-List: Prop Hub KeyDate: Thu, 29 Aug 2002 08:42:38 -0600
Doug,Yes, I have carved a new prop for the Piet and even got a racing prop carvedfor his Formula 1 racer that he is taking to Reno next month.The Piet is flying fine and I am now debugging a few of the engine problems.This morning I will start the formal flight tests to develop some numbersthat I can rely on, rates of climb at altitude, stall speed, speeds atvarious power settings and hopefully if there is time and the air doesn'tget too rough, some fuel consumption figures. All of these numbers willhave to be developed between 9 and 11 thousand feet because of our fieldelevation (7946 ft). Gets too cold to find out service ceiling right now.Will let the list know the results in the fall. We are leaving for vacationduring September.Cordially,John Dilatush NX114DSalida, Colorado________________________________________________________________________________Subject: RE: Pietenpol-List: Prop Hub KeyDate: Thu, 29 Aug 2002 08:42:38 -0600
Re: Pietenpol-List: Prop Hub Key
Original Posted By: "Steve Eldredge"
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RE: Pietenpol-List: Prop Hub Key
Original Posted By: "Steve Eldredge"
Re: Pietenpol-List: Prop Hub Key
Original Posted By: "Steve Eldredge"
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> > > Re: Pietenpol-List: Prop Hub Key
Original Posted By: Dennis Engelkenjohn
RE: Pietenpol-List: Prop Hub Key
Original Posted By: "Steve Eldredge"
Dennis...the spruce wedges only go at the locations pointed to in the plans, not at every intersection of the fuselage,BUT wedges should also be put in the fore and aft corners of the indicated areas so that the entire gusset area is filled in. I learned this the hard way and had to put the wedges in after the gussets were on ( not as much fun ).These are the areas where the lift strut fittings bolt on to later on.the bolts go through the fore and aft sides of those gussets and if there is no filler blocks in there, there is nothing to support the bolt compression. Just another one of those " Oh I forgot to tell you "places in the Piet plans. I don't have the long fuse plans so can't help you there. Ed Grentzer Florida>From: Dennis Engelkenjohn >Reply-To: pietenpol-list(at)matronics.com>To: pietenpol-list(at)matronics.com>Subject: Pietenpol-List: 2 questions>Date: Thu, 29 Aug 2002 22:01:45 -0700>>>>Hi all:>> I'm back with more questions:>> 1. On the drawing, there are spruce wedges shown between the>struts in 3 places. Is the drawing saying to put them in only these 3>places or is it saying to put them at every intersection, both 2 strut>junctures and 3 strut intersections?>> 2. On the fuselage drawing for the extended fuselage, it looks>like the firewall extends up into the cowling area and is curved like>the instrument panel. It looks like the fuselage would be 24" wide and>32 3/4" tall.? (24" fuselage height + 8 3/4" height of instrument panel)>>Dennis Engelkenjohn>>________________________________________________________________________________Subject: RE: Pietenpol-List: Prop Hub KeyDate: Fri, 30 Aug 2002 09:13:47 -0600
Dennis...the spruce wedges only go at the locations pointed to in the plans, not at every intersection of the fuselage,BUT wedges should also be put in the fore and aft corners of the indicated areas so that the entire gusset area is filled in. I learned this the hard way and had to put the wedges in after the gussets were on ( not as much fun ).These are the areas where the lift strut fittings bolt on to later on.the bolts go through the fore and aft sides of those gussets and if there is no filler blocks in there, there is nothing to support the bolt compression. Just another one of those " Oh I forgot to tell you "places in the Piet plans. I don't have the long fuse plans so can't help you there. Ed Grentzer Florida>From: Dennis Engelkenjohn >Reply-To: pietenpol-list(at)matronics.com>To: pietenpol-list(at)matronics.com>Subject: Pietenpol-List: 2 questions>Date: Thu, 29 Aug 2002 22:01:45 -0700>>>>Hi all:>> I'm back with more questions:>> 1. On the drawing, there are spruce wedges shown between the>struts in 3 places. Is the drawing saying to put them in only these 3>places or is it saying to put them at every intersection, both 2 strut>junctures and 3 strut intersections?>> 2. On the fuselage drawing for the extended fuselage, it looks>like the firewall extends up into the cowling area and is curved like>the instrument panel. It looks like the fuselage would be 24" wide and>32 3/4" tall.? (24" fuselage height + 8 3/4" height of instrument panel)>>Dennis Engelkenjohn>>________________________________________________________________________________Subject: RE: Pietenpol-List: Prop Hub KeyDate: Fri, 30 Aug 2002 09:13:47 -0600