Original Posted By: "bender"
John, I just built an O-235 C2C which is very close to being exactly the same. Thereare some AD's that need to be tended to oil pump gears,push rod material, carbventuri and float material, maybe some more. I remember the pushrods and floatbeing reading the AD's closely to determine if it applied. The oil pump isvery clear in that it requires 2 hardened steel gears. My log book lied. It waswritten that the oil pump AD had been done and it had not. Make sure you knockthe sludge tubes out of the crank and clean the krud out. If you are very carefulyou can reuse them as it is experimental. I bought an oak dowel the sameOD as the sludge tube and sanded it to fit. Measure them to make sure they arestill a press fit before you reuse them. If they are not removed and cleanedodds are very great you will have bearing problems as the oil distribution goesaround the OD of those tubes. They make like a centrifuge when the engineis running. Some of the krud the filters miss is captured within that cavity.That was not Lycoming's intent. They figured out how to make the crank withoutthose things in later years. I can really find fault though as my crank was ingreat condition after 2050 hours. I found Dart Aircraft Parts in Waco, Tx the most reasonable. A guy named Stevewas nice to deal with. Note I didn't say cheap. Piston rings were $110 per cylinder!The big picture was intentional as I wanted you to see what collects in there.--------Jerry Dotson59 Daniel Johnson RdBaker, FL 32531Started building NX510JD July, 2009wing, tailfeathers done, fuselage rollingusing Lycoming O-235Read this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/dsc0 ... ___Subject: Pietenpol-List: model a prop
Pietenpol-List: model a prop
Re: Pietenpol-List: model a prop
Original Posted By: "bender"
Jeff, as a point of reference, I just ran the Model A engine in my Piet last week up in Columbus, IN. It has a 76 X44 Hegy prop. I got 1845 static RPM with a Tillotson carb (which I think you said you are planning to use) and 1860 static RPM with a Model B carb. Your plan of using 76 x 42 sounds pretty good. I could use more revs. Larry----- Original Message -----
Jeff, as a point of reference, I just ran the Model A engine in my Piet last week up in Columbus, IN. It has a 76 X44 Hegy prop. I got 1845 static RPM with a Tillotson carb (which I think you said you are planning to use) and 1860 static RPM with a Model B carb. Your plan of using 76 x 42 sounds pretty good. I could use more revs. Larry----- Original Message -----
Re: Pietenpol-List: model a prop
Original Posted By: bender
Hi Jeff,Now that I have my engine running better, the next agenda item is to test the climb performance and record. Won't fly her again till about 7/19. I'll let y'all know.Dan HelsperPuryear, TN-----Original Message-----
Hi Jeff,Now that I have my engine running better, the next agenda item is to test the climb performance and record. Won't fly her again till about 7/19. I'll let y'all know.Dan HelsperPuryear, TN-----Original Message-----