Original Posted By: "Cuy, Michael D. (GRC-RXD0)[ASRC Aerospace Corporation]"
I was just putting in the pulleys for my aileron cable run and discovered I wasone short. When I looked up the pulley in the AS&S catalog I realized that the2" MS24566-3B Ralmark pulleys I was using are only for cable sizes 1/8 to 3/16".Since my aileron cables are 3/32 is this going to be a problem with pulleywear? I have seen 2 inch phenolic pulleys with 3/32 cables at Brodhead, buthave no idea if this is really a bad idea or not. In the 2 inch size there areonly 2 choices, the MS24566-3B Ralmark pulleys or the white UHMW plastic specialpulleys that AS&S and Wicks sell.Right now my 3 alternatives are to keep it as it is now, keep the 2" MS24566-3Bpulleys and go with 1/8" aileron cables or buy the 2" white UHMW plastic specialpulleys that AS&S and Wicks sell. The UHMW pulleys are good for cable sizesof 3/32 to 3/16".Any and all ideas and suggestions are welcome.Thanks,Rick Schreiber________________________________________________________________________________
Pietenpol-List: pulley size
RE: Pietenpol-List: pulley size
Original Posted By: owner-pietenpol-list-server(at)matronics.com
Rick,I think I used the MS24566-3B pulleys in mine. I also have 3/32" controlcables. No problem so far, with 150 hours on them. Just make sure thepulleys are "caged" so there is no way a cable can slip off and jam. Seethe attached photo, which shows a view looking from the cockpit up and tothe right. You can see the aileron pulley (right behind the radio), withpink mason's twine representing the control cable. Note the "cage" strapcovering the pulley, which is tight enogh to prevent 3/32" cable fromslipping out of the pulley groove and getting jammed between the pulley andthe spar.Hope this helps,Jack PhillipsNX899JP _____
Rick,I think I used the MS24566-3B pulleys in mine. I also have 3/32" controlcables. No problem so far, with 150 hours on them. Just make sure thepulleys are "caged" so there is no way a cable can slip off and jam. Seethe attached photo, which shows a view looking from the cockpit up and tothe right. You can see the aileron pulley (right behind the radio), withpink mason's twine representing the control cable. Note the "cage" strapcovering the pulley, which is tight enogh to prevent 3/32" cable fromslipping out of the pulley groove and getting jammed between the pulley andthe spar.Hope this helps,Jack PhillipsNX899JP _____
RE: Pietenpol-List: pulley size
Original Posted By: owner-pietenpol-list-server(at)matronics.com
Jack,Have you had any problems viewing your radio display at that angle? I'm atthat point with my center section.Thanks!Jackwww.textors.comRick,I think I used the MS24566-3B pulleys in mine. I also have 3/32" controlcables. No problem so far, with 150 hours on them. Just make sure thepulleys are "caged" so there is no way a cable can slip off and jam. Seethe attached photo, which shows a view looking from the cockpit up and tothe right. You can see the aileron pulley (right behind the radio), withpink mason's twine representing the control cable. Note the "cage" strapcovering the pulley, which is tight enogh to prevent 3/32" cable fromslipping out of the pulley groove and getting jammed between the pulley andthe spar.Hope this helps,Jack PhillipsNX899JP _____
Jack,Have you had any problems viewing your radio display at that angle? I'm atthat point with my center section.Thanks!Jackwww.textors.comRick,I think I used the MS24566-3B pulleys in mine. I also have 3/32" controlcables. No problem so far, with 150 hours on them. Just make sure thepulleys are "caged" so there is no way a cable can slip off and jam. Seethe attached photo, which shows a view looking from the cockpit up and tothe right. You can see the aileron pulley (right behind the radio), withpink mason's twine representing the control cable. Note the "cage" strapcovering the pulley, which is tight enogh to prevent 3/32" cable fromslipping out of the pulley groove and getting jammed between the pulley andthe spar.Hope this helps,Jack PhillipsNX899JP _____
RE: Pietenpol-List: pulley size
Original Posted By: owner-pietenpol-list-server(at)matronics.com
No - it is easy enough to see. The transponder is a little more difficult,but it doable (and I don't use it very often).Jack Phillips _____
No - it is easy enough to see. The transponder is a little more difficult,but it doable (and I don't use it very often).Jack Phillips _____
Pietenpol-List: Re: pulley size
Original Posted By: "Kringle"
Hoping to save a lot of research by throwing this question out there.What are the approximate degrees of deflection (up and down, left and right) onall control surfaces?Thanks in advance.--------Adrian MWinnipeg, MBCanadaRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: pulley size
Hoping to save a lot of research by throwing this question out there.What are the approximate degrees of deflection (up and down, left and right) onall control surfaces?Thanks in advance.--------Adrian MWinnipeg, MBCanadaRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: pulley size
Pietenpol-List: Re: pulley size
Original Posted By: "kevinpurtee"
I was about to order the two 2" pulleys in the wing center section for the aileroncontrol cable. I found this post in the archives and it appears that peopleare using the MS24566 Phenolic Pulleys. In the aircraft spruce catalog itstates "shall not be installed on frequently used aircraft controls to bend thecable more than 15 degrees from a straight line". It appears to me on the printsthat the pulley would bend the cable somewhat just short of 90 degrees.Should they be used?--------JohnRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: pulley size
I was about to order the two 2" pulleys in the wing center section for the aileroncontrol cable. I found this post in the archives and it appears that peopleare using the MS24566 Phenolic Pulleys. In the aircraft spruce catalog itstates "shall not be installed on frequently used aircraft controls to bend thecable more than 15 degrees from a straight line". It appears to me on the printsthat the pulley would bend the cable somewhat just short of 90 degrees.Should they be used?--------JohnRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: pulley size
Pietenpol-List: Re: pulley size
Original Posted By: "Kringle"
Not to be flip, but it's not a certified aircraft so you can use those pulleysif you wish. I don't think I've ever heard of anyone having cable failure byusing the pulleys specified in the plans. I hesitate to make a personal recommendation because I'm frightened the airplanemay hear me and decide it's un-airworthy all of a sudden.(sorry)Let your conscious be your guide. This is another topic where we'll get responsesranging from "the plans are ok" to "you're going to die."Kevin--------Kevin "Axel" PurteeNX899KPAustin/Georgetown, TXRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: pulley size
Not to be flip, but it's not a certified aircraft so you can use those pulleysif you wish. I don't think I've ever heard of anyone having cable failure byusing the pulleys specified in the plans. I hesitate to make a personal recommendation because I'm frightened the airplanemay hear me and decide it's un-airworthy all of a sudden.(sorry)Let your conscious be your guide. This is another topic where we'll get responsesranging from "the plans are ok" to "you're going to die."Kevin--------Kevin "Axel" PurteeNX899KPAustin/Georgetown, TXRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: pulley size
Original Posted By: "Chris"
So what is the alternative?--------JohnRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
So what is the alternative?--------JohnRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Pietenpol-List: Re: pulley size
Original Posted By: "Chris"
... or choosing a different aircraft to build, or not building an airplane at alland taking up needle point or flower arranging instead.--------Billy McCaskillUrbana, ILtail section almost done, starting on ribs soonRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
... or choosing a different aircraft to build, or not building an airplane at alland taking up needle point or flower arranging instead.--------Billy McCaskillUrbana, ILtail section almost done, starting on ribs soonRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
RE: Pietenpol-List: Re: pulley size
Original Posted By: owner-pietenpol-list-server(at)matronics.com
I have never heard anyone complain about cable wear in the wings so I amusing 2" pulleys and have no worries about it. I figure I will inspect thecables where they bend and replaces if necessary.ChrisSacramento, CaWestcoastpiet.com-----Original Message-----
I have never heard anyone complain about cable wear in the wings so I amusing 2" pulleys and have no worries about it. I figure I will inspect thecables where they bend and replaces if necessary.ChrisSacramento, CaWestcoastpiet.com-----Original Message-----
Pietenpol-List: Re: pulley size
Original Posted By: "Kringle"
I built it per the plans and I have no idea what the angles are. When I rack itover in an 80 degree bank the ailerons really don't deflect very much. It needssome rudder when I do that, though. Not sure what the angle on the rudderis, either.No idea on the elevator. I've never run out.I didn't answer your question specifically but I can say that I don't get anywhereclose to full deflection and yet get pretty sprightly performance from anairplane I named "Fat Bottomed Girl."I'm out of town or I'd got measure it for you.--------Kevin "Axel" PurteeNX899KPAustin/Georgetown, TXRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: pulley size
I built it per the plans and I have no idea what the angles are. When I rack itover in an 80 degree bank the ailerons really don't deflect very much. It needssome rudder when I do that, though. Not sure what the angle on the rudderis, either.No idea on the elevator. I've never run out.I didn't answer your question specifically but I can say that I don't get anywhereclose to full deflection and yet get pretty sprightly performance from anairplane I named "Fat Bottomed Girl."I'm out of town or I'd got measure it for you.--------Kevin "Axel" PurteeNX899KPAustin/Georgetown, TXRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: pulley size
Re: Pietenpol-List: Re: pulley size
Original Posted By: Ryan Mueller
I have no problems keeping with the plans. So the caution about using this pulleyis because of cable issues and not the strength of the pulley?--------JohnRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Sun, 16 Jan 2011 18:50:04 -0600Subject: Re: Pietenpol-List: Re: pulley size
I have no problems keeping with the plans. So the caution about using this pulleyis because of cable issues and not the strength of the pulley?--------JohnRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Sun, 16 Jan 2011 18:50:04 -0600Subject: Re: Pietenpol-List: Re: pulley size
Pietenpol-List: Re: pulley size
Original Posted By: "Douwe Blumberg"
Right. We can check with the A&Ps but I'm willing to bet it has nothing to dowith the pulleys.--------Kevin "Axel" PurteeNX899KPAustin/Georgetown, TXRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Right. We can check with the A&Ps but I'm willing to bet it has nothing to dowith the pulleys.--------Kevin "Axel" PurteeNX899KPAustin/Georgetown, TXRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Re: Pietenpol-List: Re: pulley size
Original Posted By: TOM MICHELLE BRANT
Don't they all have that caveat? There I am, all that timeago, becoming consternated myself thinking, "OK, justwhat pulleys can I use then?" Including phenolic onesthat looked just like the ones in the plans! So I said"The hell with it!" And was going to order the thingsanyway after returning from Arlington that year. Asluck would have it I came back with all the pulleys inthe plane and a couple extra for good measure! Butthey are all 3".If you're concerned though, take a look at that frontpulley on the stick. That ain't no 15!!Something tells me you're right. It's probably thathairpin thing.Clif> Right. We can check with the A&Ps but I'm willing to bet it has nothing > to do with the pulleys.> Kevin "Axel" Purtee________________________________________________________________________________
Don't they all have that caveat? There I am, all that timeago, becoming consternated myself thinking, "OK, justwhat pulleys can I use then?" Including phenolic onesthat looked just like the ones in the plans! So I said"The hell with it!" And was going to order the thingsanyway after returning from Arlington that year. Asluck would have it I came back with all the pulleys inthe plane and a couple extra for good measure! Butthey are all 3".If you're concerned though, take a look at that frontpulley on the stick. That ain't no 15!!Something tells me you're right. It's probably thathairpin thing.Clif> Right. We can check with the A&Ps but I'm willing to bet it has nothing > to do with the pulleys.> Kevin "Axel" Purtee________________________________________________________________________________