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Favourite old engines

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brokenenglish29/11/2013 06:11:53
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63 forum posts
19 photos

Nice find Jeff.

I can't see anything seriously wrong with the HP, and it'll be a lot lighter without the dirt. Show us some more when you've cleaned it up a bit.

I've never owned an HP glow but, in their day (early seventies, I think), they were THE best.

It's also true that the silencer looks "interesting". I don't think it started life as a model engine silencer.

Anyway, it's potentially a very nice engine, and you have the "insurance" of knowing that, if you do find a "problem"... well, it didn't cost very much!

Brian

Dave Bran29/11/2013 07:12:02
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942 forum posts
5 photos
Posted by brokenenglish on 29/11/2013 06:11:53:

Nice find Jeff.

I can't see anything seriously wrong with the HP, and it'll be a lot lighter without the dirt. Show us some more when you've cleaned it up a bit.

I've never owned an HP glow but, in their day (early seventies, I think), they were THE best.

It's also true that the silencer looks "interesting". I don't think it started life as a model engine silencer.

Anyway, it's potentially a very nice engine, and you have the "insurance" of knowing that, if you do find a "problem"... well, it didn't cost very much!

Brian

Sorry, totally wrong on the silencer! OK, I'll give the story here.............................

Back in the very early 70's, I lived in Ashford, Kent. My next door but one neighbour revived his old RC gear and taught me to fly. After a couple of years a new member and novice joined our club who was a partnership owner of Piper Cams.

Piper did far more than make camshafts, and were involved with some major tuning exercises for major manufacturers like Ford (The Escort Mexico), Rover (V8 SD racing) and Moskevitch (who wanted to enter international rallying.......Yes, really!!).

Even back then noise was a big issue, and "silencers" of the time only worked by restricting the gas flow, losing lots of potential power (not a lot has changed really!!)

Our new member got his development team on the case. At the time they did a lot of work on racing motorcycles, pretty much 2 Stroke dominated, particularly by Kawazaki and Yamaha, and many "normal" racing bike engines at that time were port timed 2 strokes (like glow engines) with horrendously noisy but power enhancing reverse cone open end pipe exhausts. Racing tracks were getting the attention of the noise abatement lobby at the time, too.

I'm not going into WHY the pipe shown is the way it is, as it probably is still copyrighted and current in some applications, but it was, at the time developed, a BIG leap in retaining power while dropping the noise emitted VERY significantly..

I was involved doing development flying on it as part of the Piper Aerobatic Display Team. (I also helped development fly the team plane, the Piper Jetstream).

Like a lot of radical designs though, public perception of the pipe was that it was a "funny looking thing" and to hell with the fact it worked, and worked really well!! Silencing wasn't "sexy" despite the pressure on sites (sound familiar??) and so sales never went beyond the point where limited cruder production techniques could be applied to it cost effectively, and it passed into history.

Yes, I do have a couple to this day!!

Also, re: HP being "the best" at that time.................good, yes, but the best, well no, I'd say IMO and experience not quite. They were limited by a very adjustment sensitive carb design. Maybe with modern plugs and fuels that won't be evident now, but it was then.

At the time, there were a few top marques in general sport flying, but probably Enya were the best normal production affordable cast crankcase front carb 2 sroke engine to own. Well priced, VERY long lasting, and I have five even today, capable of good work and reliable operation, and in original condition. (No, I'm not selling!!!)

The "top" model engine for engineering buffs to own at the time was the "Profi", a production totally machined engine, which produced loads of torque and power AND also had a reliable idle you could count the bangs on!!

At the other extreme, anyone remember the rear crankcase induction disc valved Super Tigre 40?? Mine used to push the needle of my rev counter nearly off the scale and deafen people miles away on a pylon "toothpick" prop........till it gained a Piper silencer, that is...............when the only way you could tell it wasn't only on half throttle or off tune was with a rev counter, needle now bent round the stop............ laugh

Each to their own...................... wink 2

David Davis29/11/2013 07:20:02
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1567 forum posts
249 photos
Posted by brokenenglish on 29/11/2013 06:11:53:

I've never owned an HP glow.

So an HP VT isn't a glow engine Brian?

You're going to have to film that one now!

Dave Bran29/11/2013 07:26:45
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942 forum posts
5 photos

 

Profi Engines....................  (I had the 40)

 

**LINK**

Edited By Dave Bran on 29/11/2013 07:27:59

Dave Bran29/11/2013 07:30:25
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942 forum posts
5 photos

Super Tigre 40 Rear Induction

**LINK**

brokenenglish29/11/2013 08:13:38
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63 forum posts
19 photos
Posted by David Davis on 29/11/2013 07:20:02:
Posted by brokenenglish on 29/11/2013 06:11:53:

I've never owned an HP glow.

So an HP VT isn't a glow engine Brian?

You're going to have to film that one now!

Oh dear David!

I seem to have had (another) senior moment. My apologies!!!

Thanks to DD, I do own a superb HP glow!

jeff2wings30/11/2013 18:27:58
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544 forum posts
1150 photos

Your right about that carb DB ,never got it 100% but I was a inexperienced needle fiddler ( I was only sixteen !) never had a problem setting up my Enya's ,still have a few of them 2&4 stroke

imga0887.jpg

£18 well spent I think,very smooth bearings & loads of compression yes

imga0888.jpg

only down side is the split prop driver sad

imga0890.jpg

imga0892.jpg

Dave Bran30/11/2013 19:06:04
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942 forum posts
5 photos

Cleaned up nicely..................................and the engine isn't bad either............... angel

roger graves30/11/2013 21:21:20
107 forum posts

In the 50 odd years of playing with engines I have had ED's AM's Rivers mercos OS HP etc etc. Only one stands head and shoulders above all comers the wonderful Oliver Tiger (wish I still had it)

brokenenglish01/12/2013 07:44:32
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63 forum posts
19 photos

Perhaps some may be interested in this... I've just been running a 1938 French REA 10cc spark ignition engine.

Surprisingly powerful. It's a contemporary of the Brown Junior and Ohlsson Gold Seal, and it's a lot more powerful than either of those.

I'm not a spark ignition expert, and it shows a bit in the video, but I shall do some more soon... at least the English "Astral Mechanair" and the Ohlsson Custom, two super engines.

Here's the link:

**LINK**

David Davis01/12/2013 07:52:57
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1567 forum posts
249 photos

Well done Brian! Very impressive!

Now all you've got to do is renovate that Mercury IV, shove the REA and a radio in it, and FTF.

brokenenglish02/02/2014 14:43:58
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63 forum posts
19 photos

I've just posted a video of running a rare old engine. It's a French Stab 1.25cc diesel. These were marketed from Autumn 1945, so they are older than any British or American diesel.

Notice the excellent throttling, obtained simply by rotating a choke cap, which could easily be operated by an RC servo. You get a superb idle and progressive throttling without touching the compression...

You can see it running here:

http://www.youtube.com/watch?v=l3ni2JLeaIA

This site doesn't seem to have created the link, so you may have to paste it in your browser... Strange...

Edited By brokenenglish on 02/02/2014 14:48:14

Edited By brokenenglish on 02/02/2014 14:49:26

PatMc02/02/2014 15:26:46
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2255 forum posts
281 photos

Here you go -

brokenenglish02/02/2014 17:24:45
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63 forum posts
19 photos

Thanks a lot. I managed to post a link a month or two ago.

Please, where did I go wrong?

PatMc02/02/2014 17:45:01
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2255 forum posts
281 photos

Glad to be of help.

There are instructions here but if you press the YouTube button you'll see the following instructions -

jeff2wings19/02/2014 20:37:57
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544 forum posts
1150 photos

Found this article in a old Radio Modeller the other day , think it may be of interest to Dave Bran if no one else ! rc mag 001 (3).jpg

rc mag 002.jpg

rc mag 001.jpg

rc mag 001 (2).jpg

brokenenglish24/02/2014 11:53:02
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63 forum posts
19 photos

For lovers of old diesels, I've just posted a video of one of the first diesels running.

The engine is a low serial number in the first series of Dynos (1939/40 vintage).

Only a simple running session, but it's a super engine. Here's the url:

http://youtu.be/2dSg18Uk-bU

 

 

Edited By brokenenglish on 24/02/2014 11:58:57

Martin Harris24/02/2014 21:11:22
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4777 forum posts
123 photos
Posted by Martin Harris on 01/03/2013 09:32:22:

Nostalgia-wise has to be a DC Merlin, an example of which which I did run up a few years ago just to smell the wonderful exhaust fumes - which instantly took me back to happy days of KK Snipes, Phantom Mites and suchlike..

I'd forgotten about this post but it may have had something to do with me downloading some KK Phantom Mite plans from the 'net and building one for my Merlin last summer.

Flew it a couple of times - oh the olfactive memories from the wonderful aroma of burnt ether/paraffin/castor - but I don't remember getting as dizzy forty something years ago!

jolliffee25/02/2014 17:17:32
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112 forum posts
14 photos

I loved my Diesel Rivers Silver Arrow - I really enjoyed flying C/L combat at least 50 years back - I think I still have it somewhere, though it doesn't work anymore!sad

Paul Jefferies03/03/2014 08:59:38
108 forum posts
28 photos

Another thread, "Rejuvenating an old engine" went a bit off the subject so, as suggested by one of the respondents, here is a different thread in which you can show off your treasures! I will kick off with this Grayson Gnome ....... In OFW Fisher's "Collectors guide to Model Aero Engines" he dates the Gnome at 1933 though the exact age of this example is not known.

img_0310.jpg

img_0313.jpg

It was once owned by Harold Towner and I acquired it, along with several other engines, when his daughter sold them after he died. It had (has) two labels attached to it, one of which says "3.5cc Grayson Gnome 2 stroke petrol engine built by L.H.Sparey from commercial castings".

Goodness knows how you are supposed to mount it in a model and as you can see, the needle valve is missing so I have not run it but with a history like that, this engine has pride of place in my collection smiley.

Edited By Biggles' Elder Brother - Moderator on 04/03/2014 10:02:03

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