Next up - A sand cast Enya .29

rsv1cox Thu Jan 05, 2017 10:14 am

Just a note: For those that may get tired reading about my Enya adventures (and I can sympathize), I will always mention Enya in the topic title making it easy to bypass the madness. And pictures, yup I take a lot mostly memory prompts for me at later dates as my noggin slowly turns into Swiss cheese. I only post a fraction of them. Thankfully, many here display a lot of pictures and videos too. I eat them up. Smile

And so.......... Oh yes, an Enya .29. Not just a .29 but one of the earliest sand casts. This one has little collector value (see pictures) but it deserves a clean-up and some run time. It won't get an A/F boil as that just wrecks the anodizing but rather some warm Simple Green externally and some heat to free it up. Expect to see it chugging along in the next month or two. After that I may disassemble and sand blast the sand cast then retire it to the Timex-go-around.

These sand casts are notorious for not having perfectly level mounts.

Bob

OVERLORD Thu Jan 05, 2017 10:16 am

Thrust that I'm always happy to read about your finds

wha-tah-hey Thu Jan 05, 2017 10:37 am

My sincere sympathy for the exhaust stack, Bob - I know how that grates.

andrew Thu Jan 05, 2017 10:49 am

1. Is it an engine? Good!
2. Is it a model engine? Better!
3. Is it an older engine destined for a lot of TLC? Best!
4. Does it take me back to the days of my youth and the modeling that went with it? EXCELLENT!!!

Keep 'em coming and make no apologies for it.

andrew

fredvon4 Thu Jan 05, 2017 1:06 pm

What Andrew said

Keep em coming

KariFS Thu Jan 05, 2017 1:34 pm

I like reading these too. Wouldn't mind even more details Smile

I confess I know practically nothing about Enyas, but I do have three of them and find them fascinating.

Here are two of my three Enyas, just cleaned them up using my new hot ultrasonic washer. I just disassembled what I could, that is, removed the backplates, glow plugs and carb/venturi assemblies. They took a bath in hot ethanol, then they were thoroughly oiled inside and out. Didn't polish them, rather kept the "patina". Plus there were no way I'd want to be the schmuck to put the first wrench marks on these beauties. The OK Cub took a bath with the Enyas, pretty much the same procedure Smile

ian1954 Thu Jan 05, 2017 2:03 pm

Another treasure Bob. I am not an Enya collector - they just happen my way!

But - that would be one I would accept - The exhaust stack can be repaired and the the adonising restored. I would make a steel plug for the exhaust and then use Technoweld. It doesn't stick to steel.

http://www.techno-weld.co.uk/home.html

The repair would be visible due to the differing metals but after a bit of blasting - not so much. I use Technoweld to repair fins, mountiing lugs, venturis ..........

Takes a bit of practice and, in my case, a few blisters as I cannot resist touching metal to see of it is hot!

wha-tah-hey Thu Jan 05, 2017 3:04 pm

Great info, Ian, I haven't heard of Techno Weld before, looks super handy!

KariFS Thu Jan 05, 2017 3:30 pm

There is a similar system for zamak too, forgot the name... The melting point of Technoweld is higher than that of zamak's so it won't work on Cox backplates.

gcb Thu Jan 05, 2017 3:41 pm

For welding Aluminum you might want to also check-out Alumiweld.

George

rsv1cox Thu Jan 05, 2017 3:50 pm

Solved my missing prop shaft problem with a trip to Lowes. Thread is the same but I'm not sure of the grade. Cut to length and thread the other end. Won't know about balance and true-ness until I try.

Bob

**Cribbs74** Thu Jan 05, 2017 3:59 pm

If you could re-dye and anodize the red head and drive along with the techno-weld, it would be a brand new engine again.

rsv1cox Thu Jan 05, 2017 4:56 pm

Cribbs74 wrote:If you could re-dye and anodize the red head and drive along with the techno-weld, it would be a brand new engine again.

Great idea, I'll send them off to Mark Boesen the anodizing specialist! Smile

I do have high heat engine paint in several shades of red though. But I have thought of taking just one of these worst of the worsts as received coating it in clear and mounting it on a display stand. But I know in the end it would eat away at me. Sad

**Cribbs74** Thu Jan 05, 2017 5:59 pm

You've got the space now Bob, a small anodizing setup is cheap and easy to do. As much as you restore engines it would be a smart investment.

Oldenginerod Fri Jan 06, 2017 4:56 am

Well first of all Bob, D'oh.... At least use some soft jaws in your vise, please!!

Secondly, since we are talking about anodizing, I'd like to just put it out there that I have several red engine parts which I would love to have anodized. I've read up and not sure I want to tackle it myself. If someone (Mark?) gets inspired to do a batch of red bits, I'm in.

Rod.

rsv1cox Fri Jan 06, 2017 7:30 am

Oldenginerod wrote:Well first of all Bob, D'oh.... At least use some soft jaws in your vise, please!!

Secondly, since we are talking about anodizing, I'd like to just put it out there that I have several red engine parts which I would love to have anodized. I've read up and not sure I want to tackle it myself. If someone (Mark?) gets inspired to do a batch of red bits, I'm in.

Rod.

It looks like it would cost about $250 shipped to get into it. Mark would probably do it for a few copies of your old Model Aviation magazines..... Smile

http://www.ebay.com/itm/AC-DC-Adjustable-Power-Supply-Kit-25A-0-130V-Electro-Etch-Anodize-Plating-Variac-/291985792984?hash=item43fbb59fd8:g:uQYAAOSwOVpXUFwp

http://www.ebay.com/itm/Anodizing-Supply-Replacement-Kit-/272274249490?hash=item3f64cf5712:g:7iQAAOSwNuxXYFDi

Amazon may have systems cheaper.

Bob

PS - I hope that your enjoying sunshine and warm tempertures down under. 17 degrees F and snow here in WV. Rusty and Eric to get hit this weekend.

And, not to worry Rod, narry a scratch. Begging for a dip in the pool though. Smile

rsv1cox Sat Jan 07, 2017 3:04 pm

For me early sand cast Enya's are full of surprises. They have very thin walled wrist pins with caps (think rim fire cases) on both ends sometimes steel, sometimes brass. These two .29's also have different head gaskets, one a fiber composition, the other a more traditional alloy. Also they have flat head chambers with no relief for the baffle. Baffling. One has a venturi insert, the other doesn't, but the latter's may just have gone missing.

After a bit of a clean-up.

Alloy

I was going to try to run it before cleaning it up, but without heat it would just jam up again although a little fuel through the venturi might have loosened it up. But it was nasty. Cleaned up enough to run now.

I thought removing the prop drive washer would be a problem, Wasn't.

The good, the bad, and the ugly.

Bob

getback Sat Jan 07, 2017 4:57 pm

Bob That was one nasty sob and never seen that configuration bee so thin in the piston wrist pin , do they go back together easy after removal? I also been watching some videos on the andozidizing but dont know if i want to go that far ...and the snow THANK YOU SIR MAY I HAVE ANOTHER !! 7" here at home and Cold

5 or so tonight looking for the water to freeze Shh

Ken Cook Sat Jan 07, 2017 6:28 pm

Scott Dinger is a professional welder in Simi Valley, CA. He could more than likely weld that case if you were interested. This isn't low temp rod welding. He has welded some of my cast aluminum speed pans. If the aluminum casting is one that doesn't have a lot of porosities, he can weld it. He's a bit difficult to get a hold of but his work is top notch. I have also had engines powdercoated which is not quite as resilient as anodizing but it's certainly durable.

rsv1cox Sun Jan 08, 2017 7:32 am

There are so many different types of wrist/piston pins in these Enya's that I lose count. Solid, thin wall, thick wall, pins with brass inserts, pins without. Pins with tube brass ends, pins with nicely finished ends and pins with ends just left raw and unfinished.

These .29 pins are the nicest. The rimed plugs are tight fitting and fit flush. I just insert the pin and then each plug and squeeze them in between thumb and finger until they are seated.

Nasty weather down there this morning. 9 above here. Hope your pipes are ok. Been there, done that.

I have to make up my mind on this .29 Ken. I have several so it's not alone. Let's see how it runs.

Bob

rsv1cox Sun Jan 08, 2017 7:50 am

I have mentioned before that my powers of observation have diminished over the years. Soooo

Looking again at the "Good/Bad/Ugly" picture above it dawned on me that the case of the subject .29 was different from my other sand cast .29's. It's shiny not matte! Duh. Rereading Allan's "Compendium" he relates that the early .19's and .29's had shiny cases. So, it is different and a little more valuable from a collectors (my) viewpoint. Glad I didn't sand blast it.

Yeah, makes sense, fiber/composition head gasket vs. later alloy. Brass wrist pin plug instead of steel...........

Still don't know what to do with it. Sad

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