Long engine ground running.
03-23-2008 | 02:19 AM
#26
Senior Member
RE: Long engine ground running.
ORIGINAL: Flyboy Dave
Sorry, DarZeelon....I must disagree with you also. There is no situation where an increase in
nitro content from zero....to 15% (normal nitro in the U.S.) where the "sheer increase in fuel flow"
would excede the capability of the carburetor in the Super Tiger engine.
No way.....that won't happen either....sorry.
Sorry, DarZeelon....I must disagree with you also. There is no situation where an increase in
nitro content from zero....to 15% (normal nitro in the U.S.) where the "sheer increase in fuel flow"
would excede the capability of the carburetor in the Super Tiger engine.
No way.....that won't happen either....sorry.
You'd have to take it up with him...
ORIGINAL: MetallicaJunkie
...but I love 15% CP synthetic (green) for all my 2/4-stroke engines.
...but I love 15% CP synthetic (green) for all my 2/4-stroke engines.
Even Omega Fuels; the manufacturer of CruelPower, doesn't agree with you on this...
They specify [link=http://www.morganfuel.com/omega_main.htm]Omega™[/link] for all ABC/ABN engines; not CP!
03-23-2008 | 07:35 AM
#27
Senior Member
My Feedback: (3)
RE: Long engine ground running.
ORIGINAL: lechuza
Hello, I just broke-in my ST G2300 MKII, which uses a Slimline inverted pitts muffler; I used the plug that comes with the engine and Morgan fuel 5% nitro and after 3 times 420cc tank, and as recommended on the engine manual, a 18x8 prop. from Masterairscrew classic series, all was o.k. Then I changed the spakplug for a O.S. A3 Glow Plug Hot, and put a 16x8 prop. from Masterairscrew classic series and then a Morgan fuel 15% nitro, and the engine runs well at even idle and high power settings, but after a several minutes the engine stops, so I could notice some smoke coming out around the engine as well the muffler, that clear gray/white smoke like boiling water.
I want to ask if that could be as a result of overheating, because the was no ram air and the engine was in a satatic position, and without the cowl.Also, I installed a Great Planes Easy Fueller Valve Glow, so I do not know if that valve could give some problems, too.I read some post regarding that type of fueling valves that could give some problems.
Also, If an engine is in static running at high power setting, it should run as long as fuel last, or it could get overheated and then stops.
Thanks, Isaias G.
Hello, I just broke-in my ST G2300 MKII, which uses a Slimline inverted pitts muffler; I used the plug that comes with the engine and Morgan fuel 5% nitro and after 3 times 420cc tank, and as recommended on the engine manual, a 18x8 prop. from Masterairscrew classic series, all was o.k. Then I changed the spakplug for a O.S. A3 Glow Plug Hot, and put a 16x8 prop. from Masterairscrew classic series and then a Morgan fuel 15% nitro, and the engine runs well at even idle and high power settings, but after a several minutes the engine stops, so I could notice some smoke coming out around the engine as well the muffler, that clear gray/white smoke like boiling water.
I want to ask if that could be as a result of overheating, because the was no ram air and the engine was in a satatic position, and without the cowl.Also, I installed a Great Planes Easy Fueller Valve Glow, so I do not know if that valve could give some problems, too.I read some post regarding that type of fueling valves that could give some problems.
Also, If an engine is in static running at high power setting, it should run as long as fuel last, or it could get overheated and then stops.
Thanks, Isaias G.
Okay, how about this theory. He broke in the engine with an 18/8. Something I would never do on this size. Then he switched to a 16/8. When you did this, did you leave all the settings as is or did you readjust the high and low??????? I mean this is basic stuff here which if not taken care of, can screw up the whole thing and gets everyone talking and coming up with ideas which should not be on the list until October.
Hey, I love you guys but fuel flow rate, nitro and viscosity? Cmon, lets go hunt for eggs!
03-23-2008 | 09:26 AM
#28
RE: Long engine ground running.
I agree with Dar on this one. A large engine with 15% nitro is going to need a colder plugh than an A3 even an OS #8 maybe too hot. Maybe a K&B 1L or Fox #8 or Enya #4 or even Enya #5 would be more to its liking. Pick the one that gives the highest reves when peaked out, but be sure to richen it up till it drops 300 to 500 RPM before flying or further bench running.
03-23-2008 | 10:05 AM
#29
RE: Long engine ground running.
ORIGINAL: DarZeelon
You are probably right about this, Dave, but it is what I believe PĂ© was implying.
You'd have to take it up with him...
Edward,
Even Omega Fuels; the manufacturer of CruelPower, doesn't agree with you on this...
They specify [link=http://www.morganfuel.com/omega_main.htm]Omega™[/link] for all ABC/ABN engines; not CP!
ORIGINAL: Flyboy Dave
Sorry, DarZeelon....I must disagree with you also. There is no situation where an increase in
nitro content from zero....to 15% (normal nitro in the U.S.) where the "sheer increase in fuel flow"
would excede the capability of the carburetor in the Super Tiger engine.
No way.....that won't happen either....sorry.
Sorry, DarZeelon....I must disagree with you also. There is no situation where an increase in
nitro content from zero....to 15% (normal nitro in the U.S.) where the "sheer increase in fuel flow"
would excede the capability of the carburetor in the Super Tiger engine.
No way.....that won't happen either....sorry.
You'd have to take it up with him...
ORIGINAL: MetallicaJunkie
...but I love 15% CP synthetic (green) for all my 2/4-stroke engines.
...but I love 15% CP synthetic (green) for all my 2/4-stroke engines.
Even Omega Fuels; the manufacturer of CruelPower, doesn't agree with you on this...
They specify [link=http://www.morganfuel.com/omega_main.htm]Omega™[/link] for all ABC/ABN engines; not CP!
03-23-2008 | 10:32 AM
#30
Senior Member
RE: Long engine ground running.
ORIGINAL: MetallicaJunkie
...lol why CRUEL power?.... All my old engines seen to love it..... I'm happy with the results of running CP 15% synth of all my strokes, even BJ's who fixes my 4strokes says its good for over all use..., Less varnish too..even though I love the smell of exhausted castor...
...lol why CRUEL power?.... All my old engines seen to love it..... I'm happy with the results of running CP 15% synth of all my strokes, even BJ's who fixes my 4strokes says its good for over all use..., Less varnish too..even though I love the smell of exhausted castor...
Edward,
Because this fuel, despite what its manufacturer says, is more likely to allow bearings to rust than fuel that contains castor oil; as well as not helping much, in case of a lean-run, many of the more experienced people here humoristically refer to it by that name.
The only real replacement for castor oil, is more castor oil...
Like Kevlar™ and Nomex™ riding suits, despite their engineered, high-tech attributes, cannot protect a motorcycle rider in an accident as well as does natural cowhide leather; all engineered synthetic oils cannot protect a glow engine, as well as does castor oil.
03-23-2008 | 03:46 PM
#31
RE: Long engine ground running.
ORIGINAL: DarZeelon
Edward,
Because this fuel, despite what its manufacturer says, is more likely to allow bearings to rust than fuel that contains castor oil; as well as not helping much, in case of a lean-run, many of the more experienced people here humoristically refer to it by that name.
The only real replacement for castor oil, is more castor oil...
Like Kevlar™ and Nomex™ riding suits, despite their engineered, high-tech attributes, cannot protect a motorcycle rider in an accident as well as does natural cowhide leather; all engineered synthetic oils cannot protect a glow engine, as well as does castor oil.
ORIGINAL: MetallicaJunkie
...lol why CRUEL power?.... All my old engines seen to love it..... I'm happy with the results of running CP 15% synth of all my strokes, even BJ's who fixes my 4strokes says its good for over all use..., Less varnish too..even though I love the smell of exhausted castor...
...lol why CRUEL power?.... All my old engines seen to love it..... I'm happy with the results of running CP 15% synth of all my strokes, even BJ's who fixes my 4strokes says its good for over all use..., Less varnish too..even though I love the smell of exhausted castor...
Edward,
Because this fuel, despite what its manufacturer says, is more likely to allow bearings to rust than fuel that contains castor oil; as well as not helping much, in case of a lean-run, many of the more experienced people here humoristically refer to it by that name.
The only real replacement for castor oil, is more castor oil...
Like Kevlar™ and Nomex™ riding suits, despite their engineered, high-tech attributes, cannot protect a motorcycle rider in an accident as well as does natural cowhide leather; all engineered synthetic oils cannot protect a glow engine, as well as does castor oil.
ok, honestly i hate having to send my engines off to replace bearings every few years, ive been using Cool Power Synthetic(green stuff) religiously, what brand of fuel/%nitro, and % lubricants do you recommend for overall use?
03-23-2008 | 04:23 PM
#32
Senior Member
RE: Long engine ground running.
ORIGINAL: MetallicaJunkie
What brand of fuel/% nitro, and % lubricants do you recommend for overall use?
What brand of fuel/% nitro, and % lubricants do you recommend for overall use?
I did mention Sig Champion, but any other fuel that is not too shy about using castor oil is good.
I have had good experience with Brian Cooper's synthetic lube, which is needed in smaller percentages, without a reduction in any good trait, but I still recommend some castor oil.
Even in four-stroke engines, it has its advantages and I believe even YS would not be hurt, if 2-3% castor oil is used in them.
In all non-YS tapered-bore engines, I recommend half the lubricant should be castor oil, or 5% for Cooper's.
Smaller engines need 20% total oil.
I use 5% nitro in two-stroke engines and 15% in four-strokes.
03-23-2008 | 04:44 PM
#33
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From: Martinsville,
IN
RE: Long engine ground running.
Sorry, it ain't gonna happen. I have never seen a Super Tiger engine that was the
European variety that was designed to run on zero or 5% nitro only. The manual for the
Tigers states that up to 15% nitro is recommended. This is standard fare for (most) engines
sold in the U.S.....15% nitro.
Will they run on no, or low nitro. Probably so, but this does not mean they will not run
perfectly on the recommended 15%% nitro mix.
European variety that was designed to run on zero or 5% nitro only. The manual for the
Tigers states that up to 15% nitro is recommended. This is standard fare for (most) engines
sold in the U.S.....15% nitro.
Will they run on no, or low nitro. Probably so, but this does not mean they will not run
perfectly on the recommended 15%% nitro mix.
03-23-2008 | 07:30 PM
#34
My Feedback: (21)
RE: Long engine ground running.
.....if ya' look here: http://manuals.hobbico.com/sup/sup-manual-v1_1.pdf
on page 11 of 32 you will see where the factory recommends 0-15% nitro for all
their engines from the G-34 to the G-2300.
I personally run my 40, 46, 61, and 3000 on 15% nitro. I have never run them on less
nitro. I do have two engines that will run on 5% only, an 91 ASP, and a Rossi 45. These
are both European style high compression engines. Yes, I could run those two on 15% if I
modified the engines, but why bother ?
FBD. (Edit for spulling)
on page 11 of 32 you will see where the factory recommends 0-15% nitro for all
their engines from the G-34 to the G-2300.
I personally run my 40, 46, 61, and 3000 on 15% nitro. I have never run them on less
nitro. I do have two engines that will run on 5% only, an 91 ASP, and a Rossi 45. These
are both European style high compression engines. Yes, I could run those two on 15% if I
modified the engines, but why bother ?
FBD.
(Edit for spulling)
03-23-2008 | 07:47 PM
#35
My Feedback: (21)
RE: Long engine ground running.
....look at what the Pro's recommend for big power out of the big Tigers....25% nitro:
http://www.rcfaq.com/ANSWERS/ENGINES/ST2300.HTM
http://www.rcfaq.com/ANSWERS/ENGINES/ST2300.HTM
Shoot , we have about 50,000 combined posts of expericnece here!
03-24-2008 | 01:39 AM
#37
Senior Member
My Feedback: (14)
RE: Long engine ground running.
No one has mentioned the fact that all of these recommendations depend heavily upon the style of flying one pursues and the altitude at which one is operating. Running 25% nitro at sea level in a humid and warm environment with an 18x8 prop at high throttle most of the time will overheat the engine in the average person's model.
Running the engine at partial throttle, as in 3D flying, will let one get by with higher nitro fuels and larger props, even at seal level with warm air and a large 3D prop. But it is walking a fine edge with a ring change made mandatory should one get off a bit too lean.
Ed Cregger
Running the engine at partial throttle, as in 3D flying, will let one get by with higher nitro fuels and larger props, even at seal level with warm air and a large 3D prop. But it is walking a fine edge with a ring change made mandatory should one get off a bit too lean.
Ed Cregger
03-24-2008 | 07:08 AM
#38
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From: Martinsville,
IN
RE: Long engine ground running.
I sold all my ST stuff and went to the ZDZ40 for the power
03-24-2008 | 07:24 AM
#39
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From: Martinsville,
IN
RE: Long engine ground running.
Keep Nitro 10% or lower for best operation. We use an O.S. #8 or the O.S. Type F glowplug. We recommend you try both to see what works best for you.
03-24-2008 | 04:21 PM
#40
RE: Long engine ground running.
If they are running 10% nitro with an OS #8. I am pretty sure that you would be able to run 15% with a colder plug. If the ignition timing is correct the engine will run cooler on the higher nitro not hotter. The exception would be a lean run. Lean run's are hotter on high nitro.
03-24-2008 | 04:52 PM
#41
Senior Member
My Feedback: (14)
RE: Long engine ground running.
The G2300 develops LOTS of power on 5% nitro. The only thing I can say positive about using more nitro with this engine is that it does improve idle and transition quite a bit, which is important when flying 3D.
Who was it, Dick Hanson, who said that he gave up on glow because of the high fuel consumption? I can understand that, especially when burning 25% nitro in one of the higher price brands of fuel. One gallon a day at $30 a gallon is a lot of money, if you are an active flyer.
I'll burn my 5% nitro fuel and run my G2300 (muffled only) with an OS Type-F (or equivalent) glow plug. The Type F plug will last a long time in a low compression two-stroke engine.
However, I don't claim to be an expert. Yeah, I know an uncouth saying about experts, but I won't say it. I had my one explosion of vulgarity on rec.models.xx.xxx a short while back. I'm good for another ten years of no vulgarity now. <G>
Ed Cregger
Who was it, Dick Hanson, who said that he gave up on glow because of the high fuel consumption? I can understand that, especially when burning 25% nitro in one of the higher price brands of fuel. One gallon a day at $30 a gallon is a lot of money, if you are an active flyer.
I'll burn my 5% nitro fuel and run my G2300 (muffled only) with an OS Type-F (or equivalent) glow plug. The Type F plug will last a long time in a low compression two-stroke engine.
However, I don't claim to be an expert. Yeah, I know an uncouth saying about experts, but I won't say it. I had my one explosion of vulgarity on rec.models.xx.xxx a short while back. I'm good for another ten years of no vulgarity now. <G>
Ed Cregger
