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Old Jan 30, 2010, 08:55 AM
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Gluehand (and others) - an article on Jan David-Andersen appeared in a MECA Engine Collectors Journal. Can send scans if you would like.
I would be grateful...!
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Old Jan 30, 2010, 03:11 PM
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new Oliver Cub

Looking at the right side view, then the left side view of the engine, what is in the exhaust port, as they do not appear to be the same.

From http://www.rcuniverse.com/forum/m_9423306/tm.htm

gmedson posted the following regarding the “new Oliver Cub”.

“I received my Oliver Mark II Tiger Cub from Tom Ridley/Clint Hill Engineering. See pics below. It is a real jewel! Excellent fits and finish.

Compression is excellent, with a bit of pinch at TDC.Connecting rod is unbushed at either end but closely fit on the wrist pin and crank pin so that the oiled engine has no detectable play.
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Old Jan 30, 2010, 03:14 PM
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No guesswork this time......these bits belong to the ED Miles Special (Viking) 5 cc.

Like the ETA previously shown, this piston has top/bottom sealing areas too.
This is a very good practise, as it prevents the piston from beeing worn to "barrel-shape". The same advantage if used on long bearing bushes.

I have only seen this feature on the ETA and ED, but of course I havent seen them all....

And yes, there is a bronze-bush at big end too (not visible on this photo).

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Old Jan 30, 2010, 03:29 PM
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Originally Posted by JohnAV8R View Post
Looking at the right side view, then the left side view of the engine, what is in the exhaust port, as they do not appear to be the same.
Mmm, do I see a slotted piston here......in order to provide some sub piston induction.....
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Old Jan 30, 2010, 11:01 PM
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Gluehand, it might be a slotted piston, but what I think I see is the slot opening with what appears to be a piston top showing. It looks more like a restriction in the exhaust area, but then that doesn’t make much sense with the radial exhaust porting? Anyone else with the OT Cub that can help us out?
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Old Jan 31, 2010, 05:04 PM
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Just found this thread today, one engine I thought notable by its absence was the enya 15d from the late fifties. I bought one with the earnings from my 2 paper rounds.
It took so long to run in it was incredible and the change from needing running in to being run in was almost an immediate process after about 3 hours of stuttering for 5 to 10 seconds it suddenly came alive.
My chum and I had skystreak 40s (remember them?), he had the only oliver in the club I the only enya anyone had ever seen ( god bless you bud morgan) the enya had the legs of the olly, remember these were motors being run by 14 and 15 year olds.
It still outperformed it when I turned to combat, my success was short lived as a line cut sent my plane into the trunk of a nearby scrub oak and it literally destroyed the front end, I was absolutely heartbroken. I could never get another one, then or now, the shop I bought it from (bud morgans in cardiff) apparently had the only one he ever got (or did he gull me?)
I never viewed the old engines with rose tinted specs and sold all mine, bar 2, at the 2004/5 nationals. I sold an ed bee mk1, ed hornet, ed super fury, 2 x ed racers, am 10, PAW 19 a couple of old unidentified diesels and bought 3 new saito 82as on the proceeds. The bee made best money, the racers made good money and I'm pretty certain none of the motors, apart from the PAW, went for under £40. BTW I also sold a couple of newer motors that bulked up my takings.
I have another hornet that's missing a few bits and an irvine 20 diesel, I only run the latter as a glow motor as the amount of crud that comes out of the exhaust (as a diesel)defies description I wonder why as a glow it's nowhere near as manky.
The worst diesel I ever had was by d-c which I traded for the ed bee mentioned above, the best was the either the irvine or the paw.
I
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Old Jan 31, 2010, 05:30 PM
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Originally Posted by Braddock, VC View Post
It took so long to run in it was incredible and the change from needing running in to being run in was almost an immediate process after about 3 hours of stuttering for 5 to 10 seconds it suddenly came alive.
About "first engine" running in:
Recalling: The engine was slowly beeing run in, and likewise slowly my engine skills were growing - and somewhere along the road, the two met.....and the exact point of this happening, I will never know...


Welcome to the thread, Braddock !
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Old Jan 31, 2010, 07:39 PM
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Braddock, I remember the late 1950's Enya .15 diesel well. Some members of the Joliet, Illinois R/C club flew models with this Enya .15 diesel. I had a Super Tigre G.30 diesel at that time. Later when station at Misawa, Japan USAF base the locals flew U/C combat with Enya .15 diesels. Probably a later version the the late 1950's Enya diesel. Good engines. Jack
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Old Jan 31, 2010, 08:13 PM
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Hi Jack, I was in Kobe during the mid 60s and spent a helluva lot of time looking for a hobby shop to try to get another 15d, never even saw one of our hobby shops but saw plenty of other sorts.....
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Old Feb 01, 2010, 03:55 AM
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I had an Enya .06 D in the early 60's. A good engine in most ways, but the reed valve didn't last too long....
Couldn't afford a .15 D at the time, but eventually I started building one from spares, and I kept it for many years 80% complete. Unfortunately those last bits were extremely hard to trace, so I traded it away before it was completed.
I still have a .06 D (with non functional reed valve) though...

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Old Feb 01, 2010, 04:40 AM
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Gluehand, the one I had, after hitting the tree trunk, had the crankshaft and bearing housing pushed bodily back shoving the rear of the crankcase out too, IIRC.
Somebody whose name and face I can't remember offered a swap of a diesel with a downdraft carb on which I grabbed despite my distraught state. He's probably still got those parts tucked away somewhere. I can't remember any more of the damage as the remains of the plane went in the trade but I think the needle valve was ok as was the cyl head..
BTW the elfin, as I think it was, was shot and I didn't bother getting spares to repair it. It sank without a trace in several housemoves, marriages etc which was unusual as I still had most of my diesels up until I sold them.
I think enya have started selling them again but I'm sworn off of diesels now, far too messy even for an old oily rag like me.
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Old Feb 01, 2010, 05:37 AM
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Quote:
Originally Posted by Gluehand View Post
I had an Enya .06 D in the early 60's. A good engine in most ways, but the reed valve didn't last too long....
Couldn't afford a .15 D at the time, but eventually I started building one from spares, and I kept it for many years 80% complete. Unfortunately those last bits were extremely hard to trace, so I traded it away before it was completed.
I still have a .06 D (with non functional reed valve) though...

I had an O9D wich was a sweetie in a well presented case,i used it on single chanel stuff.
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Old Feb 01, 2010, 06:05 AM
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In the lucky event of finding a new reed valve for my .06, I'm sadly aware that it wouldn't last long, so I'm thinking of making my own valve setup, hopefully more long lived....but it isn't topping my list....one of my "retirement projects"...
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Old Feb 01, 2010, 09:22 AM
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DC Bambi - How Much!!!!

I was searching for a picture of the DC Bambi 0.15cc diesel engine on the net. Somebody sold one on 'the well known auction site' for £421 GBP late last year . In the mid-late fifites they cost less than £6 GBP. That's what I call an investment (thought I'd share my amazement!).
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Old Feb 01, 2010, 10:09 AM
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>enya 15d from the late fifties.

I had a 15D in use in F/F back then and it was a fine engine that I still yearn for. I sold it to a clubmate when switching over to glows a little later .. he still owns but won't part with it even though having been inactive in modelling for about 45 years since. His Olivers, either.... sigh

I have no recollection of it being slow to break in, revved very well on an 8x4 and gave as good a performance as a similar model powered with a Oliver. However the one drawback was that a quick start and launch into good air wasn't as easy as with the Oliver, which would burst into life instantly. The Enya would spit and splutter for an appreciable time, slowly gaining rpm's as it warmed and then finally come into full song in its own time - no way could any adjustment hasten this process.

I hear since that the Mk1 is prone to shaft failure but of course I never experienced that problem. Its new owner substituted it for an Oliver and pulled the wings off his airplane .... for old time's sake I sure wish I had it back!
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