Original Posted By: Dan Yocum
My lovely wife, Karen, flew with me to Matt Paxton's Twin Rivers Airportfly-in this weekend, This involved crossing over the Blue Ridge Mountainsto get into the Shenandoah Valley of Virginia (the pass we flew throughrequired us to get to about 3500' to get over it). It's nice having someonealong to flim the trip - I'm usually too busy flying to take snapshots, muchless video.This was the last flight made with my old propeller, which gave us a rate ofclimb with two people on board of between 100 and 200 fpm. My new Cloudcarsprop gives a solid 500 fpm climb so such a trip would not be so arduous.Here's her video, showing the altitudes and airspeeds involved, The scenerywas beautiful. Too bad the weather wasn't as nice, but it wasn't bad. Forthose building Pietenpols, maybe this will show you what you can expect onceyou have your bird flying and can take it to local fly-ins. There's nothinglike it!http://www.youtube.com/watch?v=gAN3oZQvpVoJack PhillipsNX899JP "Icarus Plummet"Smith Mountain Lake, Virginia________________________________________________________________________________
Pietenpol-List: Pietenpol Flying Video
Pietenpol-List: Re: Pietenpol Flying Video
Original Posted By: "rvanengen"
I have always heard that lead protected the valves and the valve seats, which iswhy cars manufactured prior to the introduction of unleaded gas did not usehardened valve seats. I've seen cylinder heads from the 1960's and 70's wherethe valve seats have receded into the heads from excessive running on no-leadfuel. It is recommended to have hardened valve seats installed in vintage cylinderheads if you plan to drive the car (or fly the plane, Corvair guys) a loton today's formulation of automotive gasoline. I have also heard that the lead increased the 'knock-resistance" of the fuel, probablyfrom creating a higher octane rating as Gene mentioned... Anybody whowas driving in the 60's and early 70's will remember that the "low grade" gaswas 94 octane, and "Super" 103-108 octane was common in gas stations back then.The owner's manual for my 1967 Ford Fairlane 500 with the 200hp 289 specifiesthat the car be run on a MINIMUM of 94 octane gas, and if the car were tohave the 300 0r 325hp, 390 cubic inch engine, they recommended 97 or higher. At the pump today, 93 is about the BEST you'll find although I do occasionallysee 95 octane available at some Shell stations.--------Billy McCaskillUrbana, ILtail section almost done, starting on ribs soonRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Pietenpol Flying Video
I have always heard that lead protected the valves and the valve seats, which iswhy cars manufactured prior to the introduction of unleaded gas did not usehardened valve seats. I've seen cylinder heads from the 1960's and 70's wherethe valve seats have receded into the heads from excessive running on no-leadfuel. It is recommended to have hardened valve seats installed in vintage cylinderheads if you plan to drive the car (or fly the plane, Corvair guys) a loton today's formulation of automotive gasoline. I have also heard that the lead increased the 'knock-resistance" of the fuel, probablyfrom creating a higher octane rating as Gene mentioned... Anybody whowas driving in the 60's and early 70's will remember that the "low grade" gaswas 94 octane, and "Super" 103-108 octane was common in gas stations back then.The owner's manual for my 1967 Ford Fairlane 500 with the 200hp 289 specifiesthat the car be run on a MINIMUM of 94 octane gas, and if the car were tohave the 300 0r 325hp, 390 cubic inch engine, they recommended 97 or higher. At the pump today, 93 is about the BEST you'll find although I do occasionallysee 95 octane available at some Shell stations.--------Billy McCaskillUrbana, ILtail section almost done, starting on ribs soonRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Pietenpol Flying Video
Original Posted By: "Clif Dawson"
Makes me grin just watching...got the plans and starting to get the garage clearedout (and an A/C unit installed).
----------Randall02xB || !02xBRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Makes me grin just watching...got the plans and starting to get the garage clearedout (and an A/C unit installed).
----------Randall02xB || !02xBRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________Re: Pietenpol-List: Cloudcars Prop Performance
Original Posted By: "Donald Lane"
Don't forget that some makers use the flat side of theblade as reference for pitch and others use theairfoil chord line. Two different 40" pitch props maynot be the same pitch at all. That info is important for any meaningful comparison.Clif Cruise performance with the Sensenich 72 x 40: 2150 RPM yields 65 mph Cruise performance with the Cloudcars: 2150 RPM yields 69 mph Jack Phillips NX899JP "Icarus Plummet" Smith Mountin Lake, Virginia------------------------------------------------------------------------------________________________________________________________________________________
Don't forget that some makers use the flat side of theblade as reference for pitch and others use theairfoil chord line. Two different 40" pitch props maynot be the same pitch at all. That info is important for any meaningful comparison.Clif Cruise performance with the Sensenich 72 x 40: 2150 RPM yields 65 mph Cruise performance with the Cloudcars: 2150 RPM yields 69 mph Jack Phillips NX899JP "Icarus Plummet" Smith Mountin Lake, Virginia------------------------------------------------------------------------------________________________________________________________________________________