Hennie van Rooyen wrote: > VW TYPE 4 2459cc SPECIFICATIONS > 105 HP @ 3600 RPMs with 151 FT LBs. of torque at take-off/WOT
I can tell you this...I had a Type 4 (never shoulda sold it, cause I want it in my Karmann Ghia now) that weighed 170 pounds as you see it in the photo at the bottom of http://home.hiwaay.net/~langford/kvw.html , which means a "long block" with a lightened flywheel, but no intake, exhaust, alternator, etc. The folks at Mark Stephens advertised 115 hp at 3500 rpm, for whatever that's worth (and I'll confess to having believed it). The 54x52 Sensenich prop turning 3600 rpm "on takeoff" makes me think this engine is truly a miracle engine. Mine is a 2700cc Corvair 6-cylinder and can only muster 2900 rpm on takeoff with a Sensenich 54 x 54 (I wonder if it means you're at 500' AGL on takeoff or running down the runway in my case). Climbout for me is something like 3050 rpm. I guess the only thing I believe these days is what I've seen with my own eyes, and have recorded with the EIS to prove it. Of course this may all mean that the Corvair is a 75 hp engine, but I'd find that equally hard to believe. I think if I put a 54 x 48 on it I too could turn 3600 rpm on takeoff, and then I'd be turning out 120 hp. I suppose it's possible that there's some magic in that Type 4 somewhere, but I'll have to see it first hand. As for the Hirth, I've heard nothing but good things about them. I've visited their facility near Stuttgart (on business) and was very impressed. They've been in the aircraft engine business since something like 1927, and that's hard to do if you're building unreliable engines that carry people aloft... Mark Langford, Huntsville, Alabama see KR2S project N56ML at http://home.hiwaay.net/~langford email to N56ML "at" hiwaay.net --------------------------------------------------------------
