Pietenpol-List: New Model A/Pietenpol pix

[matronics]

Original Posted By: Ben Charvet
Subject: Re: Pietenpol-List: Model-A starting problem> > I would try adjusting your timing first. 28 BTDC may be too soon to > get it started. That is why aircraft mags have impulse couplers, if > they didn't they would be almost impossible to start and could have > significant kickback.> Rodney> ---- Amsafetyc >> > Not to beat it to death however to make a plug fire you need a minimum of 65psi compression so you'll have to get an accurate compression test. Not unlessyou have a calibrated thumb. Next verify that number 1 is at TDC on the compressionstroke, both valves closed. Then verify plug wire to number 1 and rotationthen verify firing order at mag, wire and plug once you have all that verifiedthen prime carb. You should get something.> >> > General rule if you got fuel, air and spark and compression she should runnot unless the spark arrives at the wrong time assuming your timing chain andmarks are properly aligned and your mag drive is turning> >> > Just some suggestions time to go back to basics and verify the essentials> >> > John> >> > Sent from my iPhone> >> > On Feb 7, 2012, at 10:32 PM, "BYD" >> > >> > > Excuse me folks, a fellow lover of the blue has got a problem..> > >> > > Ive been trying to start my Model-A Pietenpol, which is stiff from freshoverhaul. Try as I might, I cant get even a puff or pop out of it. Fuel, compression,timing and spark right? I can guarantee fuel by pouring a small amountin the spark-plug hole before propping (have also utilized starting fluid). Certainlyhas compression (verified with a thumb over the spark-plug hole whilesearching for top dead center). Timing is set at 28-degrees BTC and if you laya spark-plug on the head and give it a flip youll see spark also when turningthe rotor to line it up while holding the mag in my hand I got one hell ofa shock. I fear that it may just be my weakling status keeping me from my rewardbut Ive had others give a shot with no joy. Suspect that enough speed can notbe generated to obtain sufficient spark.> > >> > > The magneto Im utilizing is a Vertex mag that slips into the distributorhole and it does not have an impulse coupler. There isnt enough room between thefirewall and engine to mount an aircraft mag so the plans solution is out.I wonder if a stock automobile (Model-A) ignition system (battery, coil, condenserand such) might give a better slow speed spark at least to get it runninglong enough to loosen the tight engine so I could go back to the magneto.> > >> > > Any ideas, schemes or shots in the dark will be entertained. The only rewardwill be a yet another YouTube video of a Model-A Pietenpol running.> > >> > > Bill> > >> > >> > >> > >> > > Read this topic online here:> > >> > > http://forums.matronics.com/viewtopic.p ... 846#365846> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> >> >> ===========> ===========> ===========> ===========> >> >> >________________________________________________________________________________Subject: Pietenpol-List: New Model A/Pietenpol pix

[matronics]

Original Posted By: Ben Charvet
At this point I can have an intelligent conversation about Model A stuff even if I do fly behind a Continental. What a perfect Pietenpol accessoryBen CharvetTitusville FlSent from my iPhone________________________________________________________________________________Date: Wed, 08 Feb 2012 14:16:26 -0500