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RE: 4C crank case drain
[quote]ORIGINAL: jeffie8696 The problem with plumbing it back into the intake is that the gasses that pass the piston ring are most oftem burnt and no longer capable of supporting combustion. If a pocket of these gasses surround the glow plug element it could cause a misfire. This is a common phenomenon with EGR equipped gasoline engines. Is is less prevalent at high speed where the occasional misfire would not be noticed but at idle it may cause problems. Regardless of that I see it being done on new production engines to promote a cleaner airframe. I would not choose to do it myself. [/quote] Not correct as a EGR function (Exhaust into the intake manifold to reduce combustion temperature hence nitrogen oxide (NOx) emissions reduction). The returned unburned fuel gas/oil fog who is entered into the intake manifold is socalled as PVC (Positive crankcase ventilation).
Posted on: 9/2/2011 5:20 AM by Author "Motorboy"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10698086
RE: What enigne is this?
See the pic of the Leo: http://www.ebay.com/itm/MEGATECH-61-LEO-R-C-AIRCRAFT-ENGINE-/250839177441
Posted on: 8/31/2011 1:21 PM by Author "Motorboy"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10695421
RE: What enigne is this?
I has Leo .21 marine engine. How i know this is a Leo engine: The front house of crankcase has the form who is unlike other engines of other brands.. and there will be a plate with blue letters "Leo" clued to a rectangle recessed place on crankcase, this is lost away..
Posted on: 8/31/2011 7:32 AM by Author "Motorboy"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10694940
RE: What enigne is this?
I can see it is a Leo .61 engine.
Posted on: 8/31/2011 12:28 AM by Author "Motorboy"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10694570
RE: O.S. 45F Ringed?
[quote]ORIGINAL: skip1320 Thing Frank can cut ring land,will I need a differt liner?,thanks [/quote] Not enough material in piston to make ring groove. Better to buy a liner/piston set for ringed FSR engine or a used engine ringed 45 FSR in good condition to example in EEEBBAAYYY.
Posted on: 8/27/2011 10:53 AM by Author "Motorboy"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10689445
RE: O.S. 45F Ringed?
This is no ring in the engine, it is a oil groove into the piston.
Posted on: 8/26/2011 11:20 PM by Author "Motorboy"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10688957
RE: Too much prop stopping ENYA 60X ?
Maybe unbalanced propeller or resonance by airboat who make the fuel foaming..
Posted on: 8/19/2011 10:40 PM by Author "Motorboy"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10678358
RE: Too much Clearance?
This is normal. When the engine is running, there is no sloppery bearing in whole time due pressure by compression/combustion in two stroke engine.
Posted on: 8/19/2011 10:38 PM by Author "Motorboy"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10678357
RE: Clan .24cc update now running.
[quote]ORIGINAL: Diesel Die-hard Some of them had a manufacturing flaw which prevented the bypass from opening. These are definite non -runners! But there weren't too many of them. Chances are that yours won't be one. To check, turn it over slowly and listen for the crack as the transfer port opens when the piston descends. If it cracks open, you're fine.  But even if it's no go, this is fixable if you have the equipment and skill.[/quote] Be carefully to make the transfer port higher with a dremel + small diameter grinding stone and a wood stick or aluminium rod inside the cylinder to make a right height of the transfer port. When the job is done, remove the grade away from edge of transfer port with a balsa knife and lap the edges smooth with copper lapping rod + chrome polishing paste in some few rotations, not more. Do not lap too far into the cylinder, until top of transfer port only! Wash all parts free for all dirty job and oil and assembly the engine ready to run. :) The transfer height is 7.1 mm or use the 15mm aluminium rod with 6,4 mm diameter and length 12,4 mm and put into the sleeve from top of the cylinder as a stopper against the grinding stone in right height. Use smaller than 3 mm grinding stone.
Posted on: 8/17/2011 4:22 PM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10675136
RE: Clan .24cc update now running.
Some Clan engines had production fault, the transfer port can not open due the port was closed by the piston in whole time without "pop" sound when flicking the propeller.
Posted on: 8/17/2011 3:46 PM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10675122
RE: Why is it so?
The diesel fuel is more "fatty" than glow plug engine fuel due the kerosene is not "dry" as methanol. Some time we can replace kerosene with autodiesel in case the kerosene is not available there we live.., alternative fuel: Lamp oil, white spirit, autodiesel. The castor oil can replace with motoroil, better high viscosity to example 15w-50. The oil will not burn away in the oil since the engine is running colder than glow plug engine. The diesel fuel has more energy than glow plug engine and the model diesel engine will run longer than glow plug engine in same size and tank volume.
Posted on: 8/14/2011 11:06 PM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10671194
RE: Webra T4-60 : Man, I hate a dirty engine!
[quote]ORIGINAL: Kmot Earl, did your 80 not have a drain nipple in that area? [/quote] I has Webra T-4 .87, there is not drain nipple in this area. It has been always oil out of rubber sealed bearing caused by crankcase pressure and the timing belt is oiled. (My engine has crankcase as compressor). The rubber sealed bearing is not pressure tight, sealed against dust only. Tried with new bearing with rubber sealing, same problem... Nice to see the engine woke up from a tired engine to a fresh engine [:)] Wich fuel are you using in the engine? I am using the fuel who has 9% castor oil in 9% syntetic oil + 10% nitromethan (Model Technics Spesial 4 stroke 10) to be sure the Aspin valve is well lubricated and gas tight by castor oil. [:)]
Posted on: 8/12/2011 11:08 PM by Author "Motorboy"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10668363
RE: Newbie Instructions please
Here is the instruction: http://www.eifflaender.com/instruct.htm [;)]
Posted on: 8/12/2011 10:58 PM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10668356
RE: Crashed enya 90 4C
[quote]ORIGINAL: kenh3497 [quote]ORIGINAL: Motorboy The crankshaft is not whole hardened, contact with moving parts is hardened only. Hence the treaded part is not hardened also not be a brittle part to hold the propeller or receive impact or to be screwed hard without the treaded part is broken off the crankshaft. :) Safe enough to straight out the bend treaded part of the crank shaft. [/quote
Posted on: 8/10/2011 7:12 AM by Author "Motorboy"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10664002
RE: the great ether debate
[quote]ORIGINAL: AMB we should be very thankful that here we have Davis and Clutton PAW fuel, and of course the Davis 1/2A fro .10 and under the ABC above .10 as a source, open the can fuel and go 100% of the time no issues martin [/quote] You are lucky to have access to the fuel .. But if they disappeared or closed down for the production of diesel fuel for diesel engines model, how would you solve the problem of getting ether when it is your country forbids you to buy ether? Would you die due of lack of fuel?[;)]
Posted on: 8/9/2011 2:15 PM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10663089
RE: the great ether debate
[quote]ORIGINAL: earlwb Our gasoline changes over twice a year in order to have a winter blend and a summer blend, and the differences can affect your engines.[/quote] We has summer/winter diesel for improved starting properties in winter. The diesel from pump is mixed with kerosene to reduce problem with wax in diesel filter in winter period. My father in law in Ukraine told me there in Ukraine/Russia use 10% gasoline in diesel to reduce wax in filter and easier starting in strong winter. No change with gasoline in out country (Norway) in summer/winter period. Depending on which crude oil was used to destillate the gasoline who need changed with other gasoline for winter in other country as you mentioned.. The crude oil from difference country such as in Mid-east, America, Russia, North-sea has not same stuff and properties..
Posted on: 8/9/2011 2:07 PM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10663074
RE: Crashed enya 90 4C
The crankshaft is not whole hardened, contact with moving parts is hardened only. Hence the treaded part is not hardened also not be a brittle part to hold the propeller or receive impact or to be screwed hard without the treaded part is broken off the crankshaft. :) Safe enough to straight out the bend treaded part of the crank shaft.
Posted on: 8/9/2011 6:25 AM by Author "Motorboy"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10662398
RE: the great ether debate
It has been sold the etherless fuel and the engine was easy to start up without ether. Those who knew etherless fuel recipe and sold into the market went into the grave without leaving a recipe on paper or to the heirs. [:o] See the pic.. There is no wrong to run the model diesel fuel etherless. It is up to each user to choose either the fuel containing ether or without ether. Not all countries in the world have users access to the ether because of strict laws about the abuse of the ether or not available to buyers. We give them a hope that there is the etherless fuel they can use in their model diesel engines. Davis Diesel Fuel is not sold to other countries outside the U.S., same with the Model Technics diesel fuel is not always available in all countries in Europe. So we have to make own fuel and have access to the ether, in some countries in Europe are not all lucky to get ether because of the law. I have spent time chasing after etherless fuel in old books in the internet and in book markets. And I found only three books containing the recipe for etherless fuel. The books were put away in the library's stock or filed as old books in the archive that scanned books that not everyone has access to the public library's shelves or sold on the used market. That's because ether can disappear from the market due to those who produce drugs destroyed so much for us, both you and me who want to fly model airplanes with model diesel engine.
Posted on: 8/9/2011 12:28 AM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10662147
RE: the great ether debate
[quote]ORIGINAL: locktite401 [quote]ORIGINAL: nitroairplane with some engines there is no chance ever of running fuel with no ether like the AE .1cc and Clan .24cc [/quote] You're pretty lucky if you can get either of those diesels to run even with plenty of ether in the fuel. [:D] [/quote] This is due too small capacity in the tiny model engine to produce enough heat of compression..
Posted on: 8/8/2011 6:10 AM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10660730
RE: the great ether debate
Ether is to improve starting properties in the model diesel engine and can have lowest ether percentage at 20% and up to 35% depending on engine who has good start willingness by hand starting. Too much ether can give "knocking" and is a bad fuel due low caloric value. The IPN (dope) is to make smooth running and remove "knocking". See the pic...
Posted on: 8/7/2011 6:30 PM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10660256
RE: Priming with ether is not strictly neccesary..
[quote]ORIGINAL: locktite401 She's a gonna blow soon [:D] Sad to ruin the engine [:D] [/quote] I dismantled the engine and examined parts of abnormal wear and run for high load caused by excessive compression or knocking. Could not find parts damaged or show signs of abnormal wear after many hours of driving with motor oil and castor oil since the engine was made in 2005. Nor are the holes in the moving parts become oval of knocking or used by only motor oil in the periods I had not obtained castor oil. Both the piston pin and Crankpins is in order. I post pictures of engine parts that you can study on engine parts.
Posted on: 8/7/2011 5:55 PM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10660208
RE: No Ether Kerosene and Oil Only
[quote]ORIGINAL: DarZeelon [quote]ORIGINAL: KeroPower David Gierke said this: ''Continual heating is provided to the plug element (wire) in three ways: 1. It's carried over from the previous combustion operation. 2. It's added by compression of the air-fuel mixture. 3. It's added by exothermic (heat releasing) catalytic action betwee the platinum alloy of the glow plug element and the methyl alcohol in the fuel.'' I guess I should have said that methyl alcohol is not the only way to keep a glow plug glowing. This was known before Enya's gasoline glow plug engine and my little kerosene experiment because OS came out with that Bio Ethanol line of engines which used a glow plug. I wonder if they are still selling those. [/quote] KP, I appreciate Dave Gierke, but believe that if he ordered these three items by their percentage of contribution; No. 3 would have needed to a very high No. 1. The other two are in order after the catalytic effect. They both increase the catalytic effect, which is dependent on temperature. After all, it you drop an unlit glow-plug into a cup of methanol, it will not start to burn spontaneously... But the element will glow orange-hot (about 940°C/1,725°F) in the presence of hot (but much, much colder) methanol vapors, causing them to ignite in the presence of oxygen. [b][color=#FF0000]This is by no means just 'residual heat' and compression heat doesn't even come close[/color].[/b] [/quote] I wrote about this tema in post #13 http://www.rcuniverse.com/forum/fb.asp?m=10626318 Methanol is a very poor fuel for autoignition up to 385 °C
Posted on: 8/7/2011 12:26 PM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10659778
RE: No Ether Kerosene and Oil Only
[quote]ORIGINAL: KeroPower David Gierke said this: ''Continual heating is provided to the plug element (wire) in three ways: 1. It's carried over from the previous combustion operation. 2. It's added by compression of the air-fuel mixture. [color=#FF0000]3. It's added by exothermic (heat releasing) catalytic action betwee the platinum alloy of the glow plug element and the methyl alcohol in the fuel.[/color]'' I guess I should have said that methyl alcohol is not the only way to keep a glow plug glowing. This was known before Enya's gasoline glow plug engine and my little kerosene experiment because OS came out with that Bio Ethanol line of engines which used a glow plug. I wonder if they are still selling those. [/quote] Here is answer: [youtube]http://www.youtube.com/watch?v=UtkEfzpZ4Sg[/youtube]
Posted on: 8/7/2011 11:46 AM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10659712
RE: No Ether Kerosene and Oil Only
[quote]ORIGINAL: DarZeelon [color=#000066]Guys, The hot-bulb is not usable in model Diesels, so people here are just talking themselves silly...[8|] This is a model engine forum, so let's talk about model usable Diesel solutions, not just 'things that work'... Unless, that is, someone can show me how to fit a functional, Bunsen burner heated bulb in a model plane's Diesel... [/color] [/quote] Well said!!! :)
Posted on: 8/7/2011 1:52 AM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10659125
RE: No Ether Kerosene and Oil Only
[quote]ORIGINAL: iskandar taib The big marine engines are mostly straight diesels, I believe - injector goes into the cylinder head, not into a bulb. And most of the stationary engines I've seen ran on gasoline with a spark plug. Iskandar [/quote] Correct, the modern marine diesel engine is straight diesel.. and they is preheated with hot water in the cooling jacket up to 80 degree celsius to make less stresses before start up. Compression ratio is not hich as small brother of diesel engines such as in automotive cars to example due stress in the engine frame and parts of engine.. I was in the engine room in coastal ship " M/S Harald Jarl" at visit.. Today the ship has renamed to "Andrea" There is 2 difference hot bulb engine: 1. Low compression glowing hot bulb 5-7 compression ratio, injector into the hot bulb both in idling and under full power. 2. High compression warm hot bulb 7-10 compression ratio, injector into the hot bulb under idling and injector into the cylinder under full power. The injector is adjustable to make direction both ways to hot bulb and cylinder. If fixed injector into the hot bulb, the engine need water injection into the hot bulb in full power to example used in Bolinder, Avance hot bulb engines.
Posted on: 8/6/2011 10:49 PM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10659072
RE: No Ether Kerosene and Oil Only
[quote]ORIGINAL: AMB MOTORBOY yOU HIT THE MAIL ON THE HEAD IT IS INJECTED, also,,huge commercial boat engines used very heavy fractions almost tar like it was heated to liquify then injected it would not even flow unless this was done martin [/quote] The hot bulb engine is running at light oil such as Diesel oil or Solar oil and some time kerosene.. This model hot bulb engine who is showed
Posted on: 8/6/2011 12:36 PM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10658430
RE: No Ether Kerosene and Oil Only
The hot bulb engine is difference from glow plug engine: The hot bulb is heated by combustion and igniting atomized fuel from injector.
Posted on: 8/6/2011 12:02 PM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10658386
RE: Help with PAW Varijet
pointing downwards...
Posted on: 8/5/2011 4:00 AM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10656329
RE: Help with PAW Varijet
There is a small hole in the steel barrel in the carb body who must be aligned with the recess in the carb body. It is a fixed air canal for idling without the engine is dropped down by too much fuel. Is the hole blocked? See the post #5 here: http://www.rcuniverse.com/forum/fb.asp?m=5991650 [:)]
Posted on: 8/5/2011 2:13 AM by Author "Motorboy"
in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=10656287
RE: Webra T4-40
[quote]ORIGINAL: Hobbsy The engine in post 22 has one valves in the crankcase and it supercharges itself ala YS, my T4 .87 had plates in place of those valves. MotorBoy has a T4 .87 with the supercharger valves. [/quote] My engine T-4 .87 has 2 reed valve, 1 before crankcase and 1 after crankcase. Easy to start the engine. One disadvantage: The weight is about same as a OS FT 160 engine
Posted on: 8/3/2011 12:58 PM by Author "Motorboy"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10653592
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