Enya .35

Anybody tell me about a Enya .35 model #5224 with the plastic venturi inserts? Anybody use these with any luck in cl? What is the prefered size of insert? My engine , still in great shape runs like a bat out 'o hades on the test stand. I understand it could be a different story mounted on the nose of a AC. BTW, I purchased this engine at a thrift store 15 years ago for $2.50.

A few years back, I had one in a Green-Box Nobler, replacing a very tired Fox .35. It was perfect after adding one head shim to the low compression head (the engine came with two heads). As I recall, I used the #2 venturi, the stock needle valve, a 10-6 Top Flite wood and Fox Superfuel. Since the engine does not come with head shims, you must make one from .010 aluminum.
I still have the engine, I've lost count of how many planes it's been on but it still runs like new.
The later #5224 used a round venturi but we never noticed any difference in performance.
I think you'll be pleased with the ENYA in a good .35 sized plane.
Bob Z

Bruce,

I just pulled one off of one of my scratch built profiles. It runs real well but had a little to much power for the airplane. It had the medium venturi, I don't have the diameters right off hand, and a uniflo tank was used. I just sold a dozen of the Enyas on ebay. They were a mixed bag of 5224s, some were .29, some were .35. Some had the round venturis, some had the square, some had carburators.

I always liked the Enyas. They were a little heavier than other engines and take a long time to break in. I used to use them in profile carrier and in bi-planes for sport flying. 30 years ago we didn't use mufflers but I have recently returned to the hobby and found the engine to run well on suction using the smallest of the three inserts. The medium size runs well with a uniflo set up. The largest does nicely with muffler pressure. I never managed to wear any of mine out. I used at least 25 % castor in mine and still would today. All my engines also came with a higher compression head but I never found a real good use for them.

The .35 does well on a 10-6 or 9-6 and I never found it dificult to find a good needle setting. I think they are a great engine for sport flying but too heavy for competition.

The venerable Enya 5224 (Enya's distributor sold a ton of them) is a "wet two" type of engine, meaning it is happiest running in a soft two stroke mode. You will not get a traditional 4-2-4 stunt run out of this motor (their run characteristic is somewhat like a K & B Greenhead 35). They also are slightly on the heavy side for a loop scavenged engine, but nothing serious. And they have very nice, quality NVAs.

That said, you do still see many sport flyers using, and enjoying, this motor, and also the companion 29. Enyas have excellent wear characteristics, maybe the best in the business. And, as you mention, they can (and still) be scored cheaply at swaps, and on ebay. There is not a great demand for them, as they are an acquired taste for many CLers (you will find a few of their defenders here, though).

Use the smallest venturi for stunt/sport work.

I run mine with a 10-4 APC and let it scream, in a wet 2 cycle. An extra head gasket wouldn't hurt. It's a good high quality engine and won't wear out given proper care, i.e. mostly castor with a little synthetic oil to keep the gum and carbon down.

I noticed several of you said you ran a head gasket with the enyas. I never found the need. I was running 25% oil and 5% nitro. Were you using the higher compression head? Not trying to be confrontational here just want to know the advantage of it, I still have one left.

Bruce I have one of those engines bought back in 1967 0r 1968. I think it is a great engine still runs strong to this day after being on many planes.

It seems to be a periodic event to bring the venerable Enya back from the dead so to speak.
I've always gone on record as saying it was really a superior offering to that great American icon, you know who. It's biggest problem was lack of use by top names of the day as nothing guarentees a motors success as a fair amount of wins in any event.
I will agree that it was a little bigger then the Fox but not that much. Probably it's biggest detriment was that 7mm crankshaft and everyone complaining about trying to get a prop on it. Remember that reamers were not a standard item in a tool box then.
I can't aruge this successfully as I was just a kid in the 50's and used both Fox and Enyas as well as anything else that was given to me by the older guys in the club.
But I will say that the Enyas were always consistant, powerful, and seemed to be bulletproof in all things that a young kid can do to abuse a motor. I still have 2 of my origional motors from that time and they still start and run perfectly.
Dennis

These engines came with two heads, I can't tell the difference between the head unless you put them side by side. Use low compression head about 7-1 ratio. I have never used head shims either and should own stock in MRC/Enya. Used Fox Superfuel and also Duke's Fuel with no problems. The plastic venturi has a number on it, #1 is the Stunt venturi, #2 is OK, #3 was for combat and racing. I used a piece of cork and restriced half of a #3 with real good results. Engine will run an 11x5 but a 10x6 Top Flite was my favorite, the plastic ones were favorites when we were kids because they held up on rough landings. I still think they are go sport props, pther may disagree. Here is an early .29, th e 35s were the same. The red and yellow box was last used in 1965 and Enya changed their name to MRC.

Note that the Enya 29 you show is a Mark III, weighs only 6 oz. I have several. On one, I have stuffed the crankshaft and the crancase with JB weld. And balanced the crankshaft. It now runs a 2-4 break, Taipan 9-4 @ 12,000!

LAST EDITED ON Aug-12-04 AT 11:17 AM (CDT)
 
I grew flying one of those 5224 motors. I still have it!! Not to mention my Enya 15 (my first "grown up" engine after my .049s)and Enya 19. I replaced my 5224 with my first Fox 35 because the "stars" would not talk to you if you weren't using a Fox. I tried to buy another 5224 on Ebay some time back in mint condition, but somebody must have "spilled the beans" about the high quality and that was that.

5224's are among some of my favorite Enya engines and I have a bunch of them. Not sure why I need so many but I continue to add to their population when possible. They have always run fine for me as a sport engine and since that is all I do I have no complaints.

Bill

You guys are preaching to the choir. I love Enyas. Found them reliable and long lived in the olden days. But now I'm having some trouble with the old stuff, getting the classic Enya 29s and 35s to run consistently.

One 29 that was a great smooth runner back when has become quite inconsistent. I have disassembled the front end, changed the gasket and sealed it with gasket compound. But it doesn't run with full power. The compression is weird. It feels low, but holds compression for a decent amount of time when moved up to the compression point in the cylinder. (In other words I can hold it on compression without the compressed stuff leaking down quickly.) But when flipped over it gets stuck and often won't flip all the way over, but gets hung up. Is it coked up, in need of a cleaning? How do I do a cleaning? Or is the liner/piston worn out? What screw driver do I use to remove the bolts. Somewhere once upon a time I believe a knowledgeable soul said the bolts aren't phillips, but something else with a metric kind of name. It that is so what's it called and where do I get the right driver?

I had a few of these engines be troublesome in feeding when doing tight maneuvers. I have been using a chicken hopper and muffler pressure. So, What setups do you guys use successfully.
Fuel. Tank. Prop. Pressure or no pressure. And what kind of muffler. I have been using a stock warp around muffler and various tongues with lotsa holes.

It's getting bad guys. The stinkers in my club razz me mercilessly when I show up with an Enya. At times they refuse to launch and wait around while I get the darlings to start. Yes they have been hard starting to. I don't remember that. Never had starting problems back when I was a kid. Didn't use mufflers though. So.
What's the drill? They called my Enyas, enemas. Now, I ask you. We have to stick together on this.

D,

Might your problem be the fuel? Over the years most fuels have become formulated for BB, ABC engines with the amount and type of lubrication used. Most good RC fuels won't hack it for the old iron.
If you haven't done so already, try some fuel with all or most castor lube in the 25% range and nitro in the 5%-15% range. If the engines have a lot of hours on them, perhaps all castor lube would be better. For new or low-time engines, some synthetic will help keep them clean running.
Just my opinion.

Hi Bruce,
I returned to competition in '92 using a scratch built (own design/plans, Ron ) profile using a 5224 35. Mine was old when I got it from a friend, and is still a great engine. I made the mistake of putting a '70s Fox big case 40 on the profile when I went to the NATS in '93 and could never get it to run right. Should have stayed with the Enya! hahahaha
Also, mine had the low compression head, #2 venturi, stock NVA, 5% nitro 25% oil, 10-5 top flite paddle blade prop, and it did a fantastic 4-2 break run. Must have been an "odd ball" after seeing what the other guys have written.
Bill <><

>it did a fantastic 4-2 break run. Must have been an "odd
>ball" after seeing what the other guys have written.
>Bill <><

Not at all Bill, I went into the local Mom and Pops RC shop here in town A few years ago and asked if they ever did UC. Said maybe 20 years ago or so but RC ARFs are the thing now. Then he said hold on let me check my old engine stash. Yep, here it is a Enya 35. I'll let ya have it for.......$20.00 SOLD. Broke it in and added an extra head gasket and put it on a Twister. Used the small venturi with the low compression head. It ran the sweetest 2-4 break ever. Better than any of my Foxes. Eventually sold all my Enya's but kept that one. Yep, still got it. Grins

Here are a couple more epic of the Enya's. I do agree on the fuel problem. I stopped in Auburn, WA and bought new fuel. It seems that when I was a kid I never had fuel problems. I ran my Enya in a steady two stroke. I still have that engine from 1969-72. Even when compression seems lower they run great. Jim J