Original Posted By: Glenn Robb
Let me preface this question with the following1. Yes, I have read the Pietenpol FAQ and the VW engine statement.Question:Does anyone know of an operating gear reduction drivefor a Type I VW engine? I'm planning on using a highly stroked and slightly larger bore engine, with FULL electrical system on the Piet. I was thinkingof a reduction of around 2:1==Eric Ulmer, ServiceNet612-317-7768, 7857________________________________________________________________________________
Pietenpol-List: Evil VW Engine question
Pietenpol-List: Re: Evil VW Engine question
Original Posted By: Brad Schultz
Eric Ulmer wrote:> > Let me preface this question with the following> 1. Yes, I have read the Pietenpol FAQ and the VW engine> statement.> > Question:> Does anyone know of an operating gear reduction drive> for a Type I VW engine? I'm planning on using a> highly stroked and slightly larger bore engine, with> FULL electrical system on the Piet. I was thinking> of a reduction of around 2:1> Eric,I saw a Wittman Tailwind (small two seater, high-wing cabin type) with aType 4 VW/Porsche engine with a reduction drive at the Lancaster AirRaces. The owner's name is Ivan Andersson and he had the cowling off soyou could see the engine. The drive consisted of a long shaft over thetop of the engine supported by bearings and driven by belts at thefirewall side of the engine. There is a picture of this airplane in theDecember 1997 issue of Sport Aviation, p. 78. He was using a 3-bladeprop as well.The airplane flew OK and sounded quite different in the air, but keep inmind that this is a very clean, small airplane compared to the Piet. Idon't think that this particular combination would work on an AirCamper, and even with the reduction unit it is too light to balance theAir Camper. The light weight, not the torque output with a reductiondrive, is probably the main reason for keeping the VW's out out of theAir Camper.Mike List________________________________________________________________________________
Eric Ulmer wrote:> > Let me preface this question with the following> 1. Yes, I have read the Pietenpol FAQ and the VW engine> statement.> > Question:> Does anyone know of an operating gear reduction drive> for a Type I VW engine? I'm planning on using a> highly stroked and slightly larger bore engine, with> FULL electrical system on the Piet. I was thinking> of a reduction of around 2:1> Eric,I saw a Wittman Tailwind (small two seater, high-wing cabin type) with aType 4 VW/Porsche engine with a reduction drive at the Lancaster AirRaces. The owner's name is Ivan Andersson and he had the cowling off soyou could see the engine. The drive consisted of a long shaft over thetop of the engine supported by bearings and driven by belts at thefirewall side of the engine. There is a picture of this airplane in theDecember 1997 issue of Sport Aviation, p. 78. He was using a 3-bladeprop as well.The airplane flew OK and sounded quite different in the air, but keep inmind that this is a very clean, small airplane compared to the Piet. Idon't think that this particular combination would work on an AirCamper, and even with the reduction unit it is too light to balance theAir Camper. The light weight, not the torque output with a reductiondrive, is probably the main reason for keeping the VW's out out of theAir Camper.Mike List________________________________________________________________________________
Pietenpol-List: RE: Evil VW Engine question
Original Posted By: Michael D Cuy
I too have been wondering about ... (Here I go...gulp!) VW engines for the Pietenpol. After reading Eric's question, I did a web search and came up with the following site:http://www.arc.net/Able/prod03.htmPrices are a bit steep for someone who has bought $500 VWs before (Over $5000), but what's interesting is their claim that the engine is maximized for 2500 rpm and can utilize a 70 inch prop. This would appear to bring the conventional wisdom into question. I have to believe that with the right non-stock parts, even one of us "Low and Slow" guys could put a VW engine with similar performance. Just think of it as a Corvair running on four cylinders!I'm a Model A fan myself, but as I am currently living in Belgium. The VW would appear to be the only Belgian-approved non-certified engine that is flying here in amateur built aircraft.Jim Wrightjgw(at)skynet.beEric Ulmer wrote:>> Let me preface this question with the following> 1. Yes, I have read the Pietenpol FAQ and the VW engine> statement.>> Question:> Does anyone know of an operating gear reduction drive> for a Type I VW engine? I'm planning on using a> highly stroked and slightly larger bore engine, with> FULL electrical system on the Piet. I was thinking> of a reduction of around 2:1>________________________________________________________________________________
I too have been wondering about ... (Here I go...gulp!) VW engines for the Pietenpol. After reading Eric's question, I did a web search and came up with the following site:http://www.arc.net/Able/prod03.htmPrices are a bit steep for someone who has bought $500 VWs before (Over $5000), but what's interesting is their claim that the engine is maximized for 2500 rpm and can utilize a 70 inch prop. This would appear to bring the conventional wisdom into question. I have to believe that with the right non-stock parts, even one of us "Low and Slow" guys could put a VW engine with similar performance. Just think of it as a Corvair running on four cylinders!I'm a Model A fan myself, but as I am currently living in Belgium. The VW would appear to be the only Belgian-approved non-certified engine that is flying here in amateur built aircraft.Jim Wrightjgw(at)skynet.beEric Ulmer wrote:>> Let me preface this question with the following> 1. Yes, I have read the Pietenpol FAQ and the VW engine> statement.>> Question:> Does anyone know of an operating gear reduction drive> for a Type I VW engine? I'm planning on using a> highly stroked and slightly larger bore engine, with> FULL electrical system on the Piet. I was thinking> of a reduction of around 2:1>________________________________________________________________________________