Original Posted By: "C N Campbell"
Welcome "new guy"My plane started off with a Ford, so I did quite a bit of research, But it'sbeen a while, so triple ck these numbers. Dan, Larry and some of thosecurrent Ford drivers would be the ones to listen to.I THINK Larry Williams tried Lion Head, but not dual holes (I THINK) helpeda "tad" if I remember correctly, but didn't turn it into a fire breathingdragon. 76X42 or 44 seems to be the prop rangeI seem to remember that a strong Ford should turn one of those props around1800 static. If you can get between 2000 and 2100 dynamic, you're doingwell I think. Again, these numbers are old memories now, so anyone elsepipe in. This doesn't count Lowell's Funk/ford which is putting out a wholelot more hp.My response to the double mag question is that it is up to you. Some arguethat one mag is a simpler installation with less to go wrong, and donecorrectly is fine. Some argue that two mags, though more complex gives theredundancy. Probably depends on how many guys you know who have lost magsin flight. By far most Fords have historically flown with one and thenumber one cause of mag issues in my reading of twenty five years ofnewsletter back issues has been the mag adaptor loosening up, or the magcoming loose and getting out of time. Good luck!Douwe________________________________________________________________________________
Pietenpol-List: Ford question
Pietenpol-List: Re: Ford question
Original Posted By: "l.morlock"
Douwe,My lightly modified Ford is tuning a Sensenich 76-42 prop at 1960 rpm's static.I mounted this same prop on my A-65 Taylorcraft and got just shy of 1900 static.Engine includes an aluminum Winfield head that started life at 7:1 (now 6.7:1),a modified "B" carb, a log style manifold, SS modern style vales and seats,inserted rods and mains, full pressure to the mains only, and .080 over "A" pistons.--------PAPA MIKERead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Douwe,My lightly modified Ford is tuning a Sensenich 76-42 prop at 1960 rpm's static.I mounted this same prop on my A-65 Taylorcraft and got just shy of 1900 static.Engine includes an aluminum Winfield head that started life at 7:1 (now 6.7:1),a modified "B" carb, a log style manifold, SS modern style vales and seats,inserted rods and mains, full pressure to the mains only, and .080 over "A" pistons.--------PAPA MIKERead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Re: Pietenpol-List: Ford question
Original Posted By: "Cuy, Michael D. (GRC-RXD0)[ASRC AEROSPACE CORP]"
Welcome to the "new guy" with the Ford question.I acquired Douwe's Model A engine and put in in my Pietenpol. It turns 1860 static rpm with a 76 x 44 Hegy prop and a Ken Perkins B carb. Haven't flown it yet. One of the reasons I bought it was to get an A engine with modern bearing shells vs babbit bearings. I did have an A engine on it with babbit bearings and a high compression head, and I was not comfortable with that combination. Does your engine have babbit or modern bearings? Larry Morlock ________________________________________________________________________________
Welcome to the "new guy" with the Ford question.I acquired Douwe's Model A engine and put in in my Pietenpol. It turns 1860 static rpm with a 76 x 44 Hegy prop and a Ken Perkins B carb. Haven't flown it yet. One of the reasons I bought it was to get an A engine with modern bearing shells vs babbit bearings. I did have an A engine on it with babbit bearings and a high compression head, and I was not comfortable with that combination. Does your engine have babbit or modern bearings? Larry Morlock ________________________________________________________________________________