ORIGINAL: cmoulder
Thanks, Matt, and yes I fully expected the need for the pipe.
Someone asked before, but which soft mount is that in the photos of your Enigma, and which prop and header are you using?
No rush, so I will wait and read about it in K-Factor if you don't want to divulge more at this time. I was disappointed when reading about the less-than-ideal results with the ZDZ 40 and am very excited that I might have a reasonably-priced 2M that doesn't gulp $30/gal fuel![8D]
Bob,
The header is a Mcas (for a Webra 145/160) with mounting holes enlarged to 5 mm and brought in to center approx 1mm on each side. Ed Alt brought his Macs (for an OS) to Todd Syssa's place during the first bench runs about a month ago, and after enlarging the holes, centering was dead on. So which ever header you have, it can be worked with
The soft mount is my own design.... Similar to a Hyde, it isolates using the rubber bands. These are extremely simple to make and I highly recommend learning the skill. I have a tutorial on a similar build for the ZDZ40 RE here on RCU. If you did a search, you would find it. It's plywood and balsa with rubber band isolators. Been using this design for many years after reading about something similar on Pastorello's site. Isolation is at least as good as any Hyde. I have original servos in my Temptress for at least 1500 flights and they have never been serviced. Neither has the mount. I've used the same design on engines as large as 2.1 Moki.
The interesting thing is the weight of the mount for the rear mounting of this type engine. No bearers are necessary therefore weight usually comes in at around 2-2.5 ozs complete ready to install.
The prop I had handy in the flight trials was the 18.1x10 apc std blade. I have 19x8E and 19x10E Xoar wood props coming. I like the shape of the E props better. I re-carve the blades to reduce thickness even further and then carbon laminate them. Extermely strong and stiffer than about anything else I've seen, including pure carbon. Plus the biggest benefit is the very thin blades and the extremely light weight. The props come in at around 65-70 grams ready to install. Compare with apc
As far as the reasonable price...yes absolutely. As I mentioned before, we were privy to Todd's design philosophy and materials, which we can't divulge. Suffice it to say that the proof of the pudding is .....
Go for it. You will not be disappointed even if your plane came in at 11 lbs. Forget about waiting for some imaginary re-stroked offering. The engine is damn good as is.
MattK