Cox Engines Forum
You are not logged in! Please login or register! Guests are limited to posting in the "General Questions (Guest Posting Allowed)" section only. Becoming a member is fast, easy and FREE!


Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» Medallion .049
by Levent Suberk Today at 8:58 am

» Brodak 1/2A Flite Streak getting busy
by Ken Cook Today at 4:27 am

» cox recoil cord
by 944_Jim Yesterday at 8:43 pm

» Diy tanks in MS
by Ken Cook Yesterday at 7:51 pm

» Cameron .19 Marine Engine
by Ken Cook Yesterday at 7:45 pm

» treaded rod 5-40
by 944_Jim Yesterday at 6:26 pm

» CEF Honors All Who Served
by GallopingGhostler Yesterday at 5:18 pm

» Off topic - Tire pressure monitoring system
by GallopingGhostler Yesterday at 4:57 pm

» Norvel .061 Big Mig stunt
by topbrent Yesterday at 2:34 am

» Tee Dee .049 w/stunt tank. New in box.
by topbrent Yesterday at 2:04 am

Cox Engine of The Month
October-2018
Mudhen's

"Prototype T.D. .010 c.1960"



PAST WINNERS
Speed Contest 2018
CEF Traveling Engine

Win This Engine!
The Traveling Prop
Gallery


World of Aviation

Cooking up an Enya .15

Go down

Cooking up an Enya .15

Post  rsv1cox on Wed Aug 26, 2015 6:56 pm

I found these two about a month ago and finally got around to starting them.  Both despite their appearance are in good shape mechanically.



I could get one to start and run, the worst appearing, but the better of the two despite compression, fuel, and spark would not even cough up a pop.  So I disassembled, boiled it in anti freeze for a couple of hours and put it back together.  I could see no reason why it wouldn't start except the air bleed screw was all the way in and the nozzle of the spray bar was not centered in the venturi.





I will try to start it tomorrow, then clean the other one.  I thinkI will try another glow plug too, although the one I used had a bright orange glow.  But I think it's rather old.  It has AC-4 printed on the lead.
avatar
rsv1cox
Top Poster
Top Poster

Posts : 3193
Join date : 2014-08-18
Location : West Virginia

View user profile

Back to top Go down

Re: Cooking up an Enya .15

Post  Surfer_kris on Thu Aug 27, 2015 3:46 am

Try with a fresh Enya#3 plug instead. How is the compression?

I would never clean the piston and cylinder on a used engine. There is, or there should be, a layer of castor build up on both the cylinder and the piston. This helps to seal and it is vital for the old-school engines. Since it looks like you have clean both, you will have to try and build up this layer again. So use 25-30% all castor for the first few runs and finish each run by pinching the fuel line. Good luck!
avatar
Surfer_kris
Diamond Member
Diamond Member

Posts : 1512
Join date : 2010-11-20
Location : Sweden

View user profile

Back to top Go down

Re: Cooking up an Enya .15

Post  rsv1cox on Thu Aug 27, 2015 6:24 am

Thanks, The one I cleaned had great compression but both were stuck solid, a little heat loosened up the first one, the second I haven't touched yet.

Yes, the only parts boiled in anti freeze were the case and the head. The rest were cleaned with Simple Green and alcohol, no way I could have left them as is. All parts get a spray with RemOil and a blow dry. I reassemble with after run oil on all moving parts.

I do have just one NIB Enya plug left, medium I think. I will try that but it's still a mystery to me why I couldn't even get a pop out of it. I had even tried a plug out of another running Enya to no happiness.

Bob
avatar
rsv1cox
Top Poster
Top Poster

Posts : 3193
Join date : 2014-08-18
Location : West Virginia

View user profile

Back to top Go down

Re: Cooking up an Enya .15

Post  Oldenginerod on Thu Aug 27, 2015 7:51 am

Is it possible that it's a clockwise running engine? If they came as a pair, maybe they were intended to be run in a twin with counter-rotating props. I know Enya sold them like this more recently.
avatar
Oldenginerod
Diamond Member
Diamond Member

Posts : 2252
Join date : 2012-06-15
Age : 56
Location : Victoria, Australia

View user profile

Back to top Go down

Re: Cooking up an Enya .15

Post  Surfer_kris on Thu Aug 27, 2015 12:45 pm

I'm glad to hear that you didn't cook the vital parts...

If you prime the side of the piston it should fire right up, there is no need to even attach a tank at first. Once you get a feel for the engine you can attach the tank too.

I don't think the .15 engines came with left hand cranks, you can simply rotate the front 90° to have them running in the other direction. Another thing to check for is the liner alignment, somehow people manage to screw this up. I guess now that you've had it apart it will be assembled correctly too. If there is sufficient compression and a glowing glowplug they will always fire off a prime on the piston. Smile
avatar
Surfer_kris
Diamond Member
Diamond Member

Posts : 1512
Join date : 2010-11-20
Location : Sweden

View user profile

Back to top Go down

Re: Cooking up an Enya .15

Post  rsv1cox on Thu Aug 27, 2015 2:59 pm

Don't speak to soon Kris.  The worst one was so stuck that I was afraid I would break something if I tried to free it so I dumped the whole thing intact into the cooker.  I let it boil for about two hours and it came right apart with little effort.



The other one sparkled compared to this.  But it cleaned up well.







Notice the difference in the needle valves.  The length and taper of the needle itself is not the same.  They advertize these sometimes to fit the .09, .15 and .19.  But the shorter one most resembles the NV on my original .15 bought new many years ago.  



But yes,  You must align the exhaust port perfectly before you tighten down the head as it's a friction fit, also ensure that the pistons baffle is on the side opposite the exhaust port.  There is a sequence in putting these back together.

But the good news is, the one I did yesterday runs fantastic.  Go figure, everything is the same, same fuel, same glow plug, same needle, same setting.  The only things I changed were the positions of the spray nozzle and the bleed air.





It covers the whole range too, from full throttle to idle with no lag.  Perfect idle tick over with no idle bar on the glow plug.  From no run to perfect run.  I'm happy with this one.

I will run the worst condition one tomorrow. No reason why it shouldn't, it ran well yesterday before I disassembled it, but we shall see.

Bob
avatar
rsv1cox
Top Poster
Top Poster

Posts : 3193
Join date : 2014-08-18
Location : West Virginia

View user profile

Back to top Go down

Re: Cooking up an Enya .15

Post  rsv1cox on Thu Aug 27, 2015 3:15 pm

Oldenginerod wrote:Is it possible that it's a clockwise running engine?  If they came as a pair, maybe they were intended to be run in a twin with counter-rotating props.  I know Enya sold them like this more recently.

Hi Rod, They came together, but not as a pair. That would be great though for my proposed P-38. Smile



New Enya's came packed within that clear box in a yellow foam that just fell apart over the years and corroded and stuck to that side of the engine, that's what happened to these. It happened to several of mine years ago.

Bob
avatar
rsv1cox
Top Poster
Top Poster

Posts : 3193
Join date : 2014-08-18
Location : West Virginia

View user profile

Back to top Go down

Re: Cooking up an Enya .15

Post  Oldenginerod on Fri Aug 28, 2015 5:24 am

Got my "new" .09 with missing head screw in the mail today. It's all there except the screw and glow plug, and the needle and clicker spring look different to my other Enyas, but seems to be a correct fit. It still has the venturi restrictor.
I wasn't quite so lucky this time with my glycol cook-up. There are several black stains on the head and case which didn't shift. Also gave it a scrub with a brass wire brush but still black.
The good news is that the hole for the missing screw still has its thread. It was advertised as having poor compression, but with the head removed (until I find my spare screws) and my thumb over the cylinder I can't detect any leak past the piston. I like to lap the head to the liner on these, so once I find 4 good head screws I'll lap it in and see what the comp is like.
I'm looking forward to reviving another old Enya and hope to fire it up in the next few days.

Rod.
avatar
Oldenginerod
Diamond Member
Diamond Member

Posts : 2252
Join date : 2012-06-15
Age : 56
Location : Victoria, Australia

View user profile

Back to top Go down

Re: Cooking up an Enya .15

Post  gcb on Fri Aug 28, 2015 7:02 am

rsv1cox wrote:Notice the difference in the needle valves.  The length and taper of the needle itself is not the same.  They advertize these sometimes to fit the .09, .15 and .19.  But the shorter one most resembles the NV on my original .15 bought new many years ago.
 
All of my throttled Enyas have the short needle and the CL ones have long (spring) needles. Of course that may have changed over the years.

 You must align the exhaust port perfectly before you tighten down the head as it's a friction fit, also ensure that the pistons baffle is on the side opposite the exhaust port.  There is a sequence in putting these back together...

I once got a great deal on a CL Enya .15-III because the previous owner had installed the cylinder and head backwards.

BTW, I believe your Enya WILL run clockwise if you turn the front housing 90 degrees so the crankshaft port is open when the piston goes up while the engine turns clockwise. Have not tried it, read it years ago.  

George
avatar
gcb
Platinum Member
Platinum Member

Posts : 908
Join date : 2011-08-11
Location : Port Ewen, NY

View user profile

Back to top Go down

Re: Cooking up an Enya .15

Post  rsv1cox on Fri Aug 28, 2015 8:13 am

Thanks George. Throttled solid short, control line springed. Makes sense, but looking at the picture above, the springed NV came with the two throttled engines in the box. My known original throttled .15 hovever does have the short NV. I will have to be aware of that.

I will have to try that 90 degree experiment.

I just bought a gallon of SIG 5% nitro all castor to run in these Enya's, etc. Just found a cheap Enya 40 CX and have a 40SS coming. I may build some of my old R/C kits yet.

Bob
avatar
rsv1cox
Top Poster
Top Poster

Posts : 3193
Join date : 2014-08-18
Location : West Virginia

View user profile

Back to top Go down

Re: Cooking up an Enya .15

Post  getback on Fri Aug 28, 2015 10:59 am

The enyas are looking great there Bob , glad there running again love the performance and sound of them . I may run that .09 today if I have time want to run the BB on that Baby Ringmaster also to see if it runs ok to fly and a .049 medallion for the Clown . getback Wink
avatar
getback
Top Poster
Top Poster

Posts : 5065
Join date : 2013-01-18
Age : 61
Location : julian

View user profile

Back to top Go down

Re: Cooking up an Enya .15

Post  Sponsored content


Sponsored content


Back to top Go down

Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum