Miscelainous diesel ramblings
08-18-2013, 11:32 PM
#26
Mine was a gift I think, and having little regard for European diesels in about 1965 (the ST G15 glow had just arrived in Oz), I just gave it away to a chap I was working with.
Silly move.
I now understand that they're as powerful as a mk3 Olly but not quite as economical.
Jon's done a fine job and the anodizing looks perfect.
Those hex headed bolts are interesting. They're usually available at our local Model Engineering supplier, but I expect that Jon's made his own.
I guess that the Webra's predate Phillips head screws, but I don't remember ever seeing that style bolt heads before about the mid 90's, and then on a mate's live steam loco.
No doubt they are authentic.
Ray
Last edited by qazimoto; 08-18-2013 at 11:43 PM.
08-19-2013, 12:01 AM
#27
Hi Qaz, I used a G15RI diesel, setup for team race that had a Cox TD .09 venturi for a USA Combat event termed 80 mph Combat.. It was run using Fast Combat
rules(Kills allowed); engines up to .36 cu" and 60' lines. I was using a 360 sq" model with a hard tank and used chopped down Kvan and Taipan 8" X6" props.
on 60' X .015" lines, it pulled a streamer at 76-77mph and would go 79 mph without the streamer. I believe the flying weight was 14.5ozs, so it flew very well.
Because of the very strong 1" sq L.E. stock, it survived all collisions, except the ones that opponents flew through it's very light tail boom. That was easily
fixed during the match with CA. I don't fly Combat anymore, otherwise I would definitely buy a Parra for speed limit Combat; They now fly 75 mph instead of
80 mph Combat. Which means that I could use a bigger wing area(390-425sq"s) at the same weight and stay at 75mph sans streamer. Good Luck;
Tony
rules(Kills allowed); engines up to .36 cu" and 60' lines. I was using a 360 sq" model with a hard tank and used chopped down Kvan and Taipan 8" X6" props.
on 60' X .015" lines, it pulled a streamer at 76-77mph and would go 79 mph without the streamer. I believe the flying weight was 14.5ozs, so it flew very well.
Because of the very strong 1" sq L.E. stock, it survived all collisions, except the ones that opponents flew through it's very light tail boom. That was easily
fixed during the match with CA. I don't fly Combat anymore, otherwise I would definitely buy a Parra for speed limit Combat; They now fly 75 mph instead of
80 mph Combat. Which means that I could use a bigger wing area(390-425sq"s) at the same weight and stay at 75mph sans streamer. Good Luck;
Tony
It's certainly a performer but worth too much to use in either a racer or combat model.
We're rather spoiled with other cheaper practical choices right now.
Interesting that it flew well on 60' x .015" lines.
The Parra's and Fora diesels really go well in European style Vintage combat models such as the Anduril, which would be about 300 sq".
They're flown on 52' '3" x .015" lines. You'd probably enjoy it as an event. Airspeeds would be about 80 mph.
The Anduril plan is available on the Hippocket Plan web site.
Interestingly, some c/l members in our club are flying fullsize versions of Wiley Wooten's Voodoo with .15 sized CS Olly diesels mounted on heavy Alloy engine plates.
They perform beautifully!
I'll see if I can get a pic.
Ray
Last edited by qazimoto; 08-19-2013 at 12:04 AM.
08-21-2013, 02:22 PM
#28
Senior Member
Yes the ST G15 RI is a difficult engine to make earn it's keep.
It's certainly a performer but worth too much to use in either a racer or combat model.
We're rather spoiled with other cheaper practical choices right now.
Interesting that it flew well on 60' x .015" lines.
The Parra's and Fora diesels really go well in European style Vintage combat models such as the Anduril, which would be about 300 sq".
They're flown on 52' '3" x .015" lines. You'd probably enjoy it as an event. Airspeeds would be about 80 mph.
The Anduril plan is available on the Hippocket Plan web site.
Interestingly, some c/l members in our club are flying fullsize versions of Wiley Wooten's Voodoo with .15 sized CS Olly diesels mounted on heavy Alloy engine plates.
They perform beautifully!
I'll see if I can get a pic.
Ray
It's certainly a performer but worth too much to use in either a racer or combat model.
We're rather spoiled with other cheaper practical choices right now.
Interesting that it flew well on 60' x .015" lines.
The Parra's and Fora diesels really go well in European style Vintage combat models such as the Anduril, which would be about 300 sq".
They're flown on 52' '3" x .015" lines. You'd probably enjoy it as an event. Airspeeds would be about 80 mph.
The Anduril plan is available on the Hippocket Plan web site.
Interestingly, some c/l members in our club are flying fullsize versions of Wiley Wooten's Voodoo with .15 sized CS Olly diesels mounted on heavy Alloy engine plates.
They perform beautifully!
I'll see if I can get a pic.
Ray
would actually fly too fast to make a 400 sq" model meet the 80 mph speed limit.
My friend Barry Baxter had two diesel powered 400 sq" combat models , one used
a Rossi 2.5cc and the other model used a Nelson 2.5cc T/R. The Nelson clocked
84 mph and the Rossi flew 82 mph, on 60' X .015" lines. Just remembered, Bare
also had an MVVS 2.5cc diesel powered combat model that clocked 83 mph in one
of the same models. Those engines needed larger wing areas to slow them down to
fly the speed limit. The advantage to using 2.5cc powered models was the
lighter wing loading(tighter turning); the main disadvantage was controlling the
model in the predictable line tangles. But it was fun to fly a model that was just
as fast and yet tighter turning than the slower turning .35 cu" models.
Tony
08-24-2013, 07:05 PM
#29
Her's a few more diesels from a big turnout yesterday at Mannering Park. Almost every engine used was a diesel.
This one is a later version of the Oliver Tiger mk4. It's certainly a working engine with the castor oil stains on the crankcase.
The mk4 was realeased during the late 1960's as a stronger more rugged version of the mk3. Not too many parts are interchangeable beyond the NVA and the compression screw.
Interestingly while production ceased in the mid eighties when John Oliver retired, I've been told that he continued to make a small number of these right up till the new production of the range by Ridley..
This one is one of Bob Fisher's Yeti vintage combat models. Like the Anduril it's popular because of it's relatively large wing area.
The plan is also available free on the Hippocket Plans site.
It's powered by a "fixed up" CS Oliver Tiger clone and it goes very well.
Ray
This one is a later version of the Oliver Tiger mk4. It's certainly a working engine with the castor oil stains on the crankcase.
The mk4 was realeased during the late 1960's as a stronger more rugged version of the mk3. Not too many parts are interchangeable beyond the NVA and the compression screw.
Interestingly while production ceased in the mid eighties when John Oliver retired, I've been told that he continued to make a small number of these right up till the new production of the range by Ridley..
This one is one of Bob Fisher's Yeti vintage combat models. Like the Anduril it's popular because of it's relatively large wing area.
The plan is also available free on the Hippocket Plans site.
It's powered by a "fixed up" CS Oliver Tiger clone and it goes very well.
Ray
Last edited by qazimoto; 08-24-2013 at 07:18 PM.
08-25-2013, 03:58 PM
#34
Another one from Saturday,
This is a popular diesel on this forum, a PAW TBR 40. It hauls the model around very well. The model is an r/c SIG Fazer converted to c/l stunt.
The gent is Ian Smith, the well known NSW Aeromodelling guru.
This is a popular diesel on this forum, a PAW TBR 40. It hauls the model around very well. The model is an r/c SIG Fazer converted to c/l stunt.
The gent is Ian Smith, the well known NSW Aeromodelling guru.
Last edited by qazimoto; 08-25-2013 at 04:02 PM.
10-06-2013, 10:03 PM
#35
Here's some more pics from last Saturday at MP.
Firstly an ME Snipe 1.5cc diesel. These were made on the Isle of Man (middle of Irish Sea) in the 1960's.
There's quite a bit on them in the engine finder on the MEN website.
This probably the only one ever to be hoped up!
It's Bob Fisher's and he's set the exhaust timing and fitted a new piston. Originally they had an unusual system where the conrod was held onto the piston by a circlip arrangement. Bob's changed it to a standard floating gudgeon pin.
Firstly an ME Snipe 1.5cc diesel. These were made on the Isle of Man (middle of Irish Sea) in the 1960's.
There's quite a bit on them in the engine finder on the MEN website.
This probably the only one ever to be hoped up!
It's Bob Fisher's and he's set the exhaust timing and fitted a new piston. Originally they had an unusual system where the conrod was held onto the piston by a circlip arrangement. Bob's changed it to a standard floating gudgeon pin.
Last edited by qazimoto; 10-06-2013 at 10:09 PM.
10-06-2013, 10:14 PM
#36
It starts, tunes and runs very well. See: http://www.modelenginenews.org/cardfile/ME_heron.html for the M.E. story.
This one is rather unusual to westerners.
It's a rear induction Jena diesel made in the former East Germany in the 1950's I believe.
It's a real powerhouse and out of the box it turned the nylon 8x4 prop at over 15300 rpm.
We didn't get a chance to run it with an APC 7x6 to allow a direct comparison with an Oliver Tiger because of the large diameter prop driver hub. Perhaps next week. It's probably well into the OT class.
Bob adjusts the Jena.
More later.
Ray
Last edited by qazimoto; 10-07-2013 at 03:09 AM.
10-07-2013, 01:10 AM
#37
Senior Member
Running another rare old engine
I've always run as many of my engines as I can. All the ultra-rare and valuable ones have been played with on the bench. Recently, I've started trying to show a few interesting engines running, on Youtube.
Here's the 1947 English Airstar.
http://www.youtube.com/watch?v=3p__kUa1SKE
Here's the 1947 English Airstar.
http://www.youtube.com/watch?v=3p__kUa1SKE
10-12-2013, 01:45 AM
#38
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I gave the DGY an airing today.
The CS Olly fired right up (backwards), then after a short warm up, into the air. At about 30/10 it seemed fast after such a long break, but by the end of the flight I was looking for more.
That CS is one sweet motor. I must say the only CS parts are the case, backplate & prop driver. hahaha!!
Greg
The CS Olly fired right up (backwards), then after a short warm up, into the air. At about 30/10 it seemed fast after such a long break, but by the end of the flight I was looking for more.
That CS is one sweet motor. I must say the only CS parts are the case, backplate & prop driver. hahaha!!
Greg
10-12-2013, 02:35 AM
#39
I gave the DGY an airing today.
The CS Olly fired right up (backwards), then after a short warm up, into the air. At about 30/10 it seemed fast after such a long break, but by the end of the flight I was looking for more.
That CS is one sweet motor. I must say the only CS parts are the case, backplate & prop driver. hahaha!!
Greg
The CS Olly fired right up (backwards), then after a short warm up, into the air. At about 30/10 it seemed fast after such a long break, but by the end of the flight I was looking for more.
That CS is one sweet motor. I must say the only CS parts are the case, backplate & prop driver. hahaha!!
Greg
since we timed it in the DGY at StIves it has occurred to me that we didn't try it with a 4.5mm diameter venturi hole.
It may have had much more potential than it seemed.
Ray
10-12-2013, 02:03 PM
#40
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You know, I've been thinking I need some lathe time.
This is my next little job.
4.5mm you say? Could be I'll have to make a couple of different sizes.
Greg
10-12-2013, 02:14 PM
#41
BTW did you watch the used R250 go for USD723.99 on ebay this morning?
http://cgi.ebay.com/ws/eBayISAPI.dll...torefresh=true
Damn collectors hey?
Ray
10-12-2013, 04:02 PM
#42
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No mate, didn't see that.
Wow! I wonder how much they'd pay for a NIB example - if only I knew where to find one.
The good side of collectors is they'll all move on some time & release a bunch of decent motors that can be used!
We just got to outlast them!
Greg
Wow! I wonder how much they'd pay for a NIB example - if only I knew where to find one.
The good side of collectors is they'll all move on some time & release a bunch of decent motors that can be used!
We just got to outlast them!
Greg
10-12-2013, 05:21 PM
#43
What a pity we didn't stock up on them while they were still being made, eh!
I heard a story about one of these collector chaps requesting that his R250 not be test run, because it wouldn't be "new" then.
Yet another wouldn't take his 30 y/o Oliver Tiger mk4 out of it's plastic bag because the last person who handled it was John Oliver himself, and he didn't want to soil it.
Collectors, bless 'em all!
Ray
10-12-2013, 05:45 PM
#45
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Indeed Gregory!
What a pity we didn't stock up on them while they were still being made, eh!
I heard a story about one of these collector chaps requesting that his R250 not be test run, because it wouldn't be "new" then.
Yet another wouldn't take his 30 y/o Oliver Tiger mk4 out of it's plastic bag because the last person who handled it was John Oliver himself, and he didn't want to soil it.
Collectors, bless 'em all!
Ray
What a pity we didn't stock up on them while they were still being made, eh!
I heard a story about one of these collector chaps requesting that his R250 not be test run, because it wouldn't be "new" then.
Yet another wouldn't take his 30 y/o Oliver Tiger mk4 out of it's plastic bag because the last person who handled it was John Oliver himself, and he didn't want to soil it.
Collectors, bless 'em all!
Ray
Apart from the R250, if I could go back, I'd probably get a bucket full of ST G15's & G20's oh and a couple more X15's.
And maybe a Lotus Elan S2
Greg
10-14-2013, 05:31 PM
#46
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Ah yes, easy to think about what might have been buying plenty of the right thing way back when.
Quality at the time model aircraft engines, particular cars and motorcycles come to mind of course. One thing I kick myself for is letting go for $1000.00 was my beautiful Bultaco Metralla in 1988.........They bring 4 or 5k these days.
Quality at the time model aircraft engines, particular cars and motorcycles come to mind of course. One thing I kick myself for is letting go for $1000.00 was my beautiful Bultaco Metralla in 1988.........They bring 4 or 5k these days.
10-15-2013, 05:30 AM
#47
Senior Member
I used to possess a Lotus Elan S2 FHC SE (the top of the range) in 1967. Very beautiful car, but honestly a bit fragile. It was very difficult, even for professionals, to tighten the exhaust manifold nuts on the head, so they continually came loose, with the resulting awful noise. Not too serious if you're at home, but a real pain if you're on holiday 1000 miles away.
Fortunately, I still have a new ST G15 and several G20s, including one tuned by a French speed ace for the French WC combat team, in the sixties. A fantastic engine, even today. I haven't actually checked it against my Rossis, etc. but there can't be much difference.
Fortunately, I still have a new ST G15 and several G20s, including one tuned by a French speed ace for the French WC combat team, in the sixties. A fantastic engine, even today. I haven't actually checked it against my Rossis, etc. but there can't be much difference.
10-20-2013, 09:51 PM
#49
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Without adjusting the comp, and a bit of a fiddle on the needle, it ran an impressive 7-800 extra revs. I'll air test it on Saturday, if the fires haven't engulfed the entire western suburbs.
I'll probably make up a couple of extra venturis up to about 4.8mm to see where it starts to lose performance.
Regards
G
10-20-2013, 11:40 PM
#50
Well Ray, today I managed some machine time & made a new venturi, about 4.3mm.
Without adjusting the comp, and a bit of a fiddle on the needle, it ran an impressive 7-800 extra revs. I'll air test it on Saturday, if the fires haven't engulfed the entire western suburbs.
I'll probably make up a couple of extra venturis up to about 4.8mm to see where it starts to lose performance.
Regards
G
Without adjusting the comp, and a bit of a fiddle on the needle, it ran an impressive 7-800 extra revs. I'll air test it on Saturday, if the fires haven't engulfed the entire western suburbs.
I'll probably make up a couple of extra venturis up to about 4.8mm to see where it starts to lose performance.
Regards
G
that's good news! It should be right on the money in the air and it starts really well.
Bob and I have found that the upper limit for a .15 diesel or glow (on suction) is about 4.7mm,
but it gets really hard to tune as the air density drops.
They'd be really hopeless during today's weather.
Surely the fires couldn't get up the mountain?
We turned up at Mannering Park on Saturday (off Rutley's Road) to find every thing burnt black except the buildings.
Zero damage to club property!
There was a constant stream of fire trucks checking out the smouldering tree trunks and we got a visit from the Arson Squad.
The Detective started off his questions with "are you a bunch of blokes who never really grew up?".
The only honest answer to that has to be "yes, that's right".
Great police public relations.
Ray
Last edited by qazimoto; 10-21-2013 at 01:42 AM.