Hey gang.  I picked up a couple of Enya .15s on E-Bay, for use in Akromasters and similar smaller planes.  One is a -II, and the other is a -III.  I gave them both a run on the test stand the other day, just for testing purposes. I used a Master Airscrew 8x4, which is an older wide-blade style.  I was using some K&B 100 fuel that is 5% nitro and 20% castor oil.  The -II ran great, right up to 12,800 when leaned out.  The -III was a little bit harder starting, but ran up to 14,300 when leaned out.

I've already bolted the -III into a Stuntin' Junior Ringmaster that will get it's maiden flight this weekend.  This plane is now 16.9 oz., ready to fly.  How does this sound for a setup?  Do the Enyas like to be run in a wet two-cycle run, or do they have a 4-2 break.  They seemed to like running two-stroke style on the stand.

You're thinking the 8x4 might be too much prop for it, and get it too hot?  I don't want it to run away on me!  Neither of these engines has a muffler, and none of my flying sites requires one anyway, so I can dispense with that. 

Thanks, and I'll keep you posted on what I find.

              Yes, the 8x4 is a suggested prop for the plane and yes the 8x4 will fly it. I do agree with Steve about the wide Master Airscrew as well. My reasoning for using the 7x6 was just as you said, I felt that the 8x4 was making the engine heat up.  I just liked the 7x6.The 7x6 Master Airscrew nowadays will have to be reamed to fit the shaft and having the correct reamer is in order. I just reamed with my Fox reamer from the back without coming through the front and then screwing it on.  First off an engine with less load on it will allow for easier adjustment. The JR Ring just like it's bigger brother likes to fly fast. The APC 7x6 will accomplish that. But the only true way is for you to try both props and decide. While these items may work for us, were miles apart and everything changes as does elevation. I discovered that initially I was using the OS needle spray bar for the .20-.40 size this was shrinking my choke area considerably. I went to the FP.15 spraybar and found that it was a huge difference because its narrow. This allowed the engine to run more like I wanted it to. Something else to keep in mind. These engines take foooooorever to break in. They just do and constant running them is what needs to be done. Ken

               I'm not trying to dispute anyone else when it comes to what to use and how to use it. Others may feel that this engine runs perfectly for them.  My experience is based on using this engine extensively for two years practically every flyable weekend. I also not only used the Enya 3303 in the Jr Ring, but I also used it in the Akromaster. The 8x4 didn't give the Ring the speed it required like the thin bladed Master Airscrew did. The Taipan has been out of production for nearly 20 years . This was the last time I heard of them available http://www.modelflight.com.au/powered_propellers.htm For someone like Jeff living in Alaska, this may not be an easy find.  My son used  both of these planes and the same Enya engine while flying beginner. I used not just one of these Enya's but 3 of them. If I was to do it all over again, I would certainly opt for a LA .15. The LA isn't going to run away like the Enya does. The break in is minutes compared to months.  Parts are readily available as well. I truly believe my findings are on track with the Enya III that it's certainly an engine for the r/c crowd. I haven't used my Enya IV's but I do believe the larger head supplies better cooling and the unobstructed exhaust stack does the same. The problem with the Akromaster is that the Enya is too heavy for the Akro. I've read about builders extending the wings a rib bay to each tip. I totally agree with this as more lift would certainly help. If the stock plane isn't flying fast its stalling in the maneuvers.  I had to put 1 oz of lead on the tail. Keep in mind I had to use mufflers  on the Akro as our club rules require them. I took 1/4 oz out when I switched to the tongue. The Enya is much heavier than the Fox .15 which is what the Akro was designed for. The Jr Ringmaster needed about the same weight and I rebuilt the fuse extending it to the rear another 1 1/2". This didn't seem to improve the flying characteristics as much as I hoped but it reduced the amount of tail weight I needed. Ken