What are the pros and cons to running diesel
10-26-2011, 05:16 PM
#26
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RE: What are the pros and cons to running diesel
Dave, you are amazing!
Every time I look at one of your posts there is a different engine chugging away on that test stand of yours.
Any chance of a population count mate? Or are they still breeding?
Cheers.
Every time I look at one of your posts there is a different engine chugging away on that test stand of yours.
Any chance of a population count mate? Or are they still breeding?
Cheers.
10-26-2011, 05:23 PM
#27
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RE: What are the pros and cons to running diesel
Diesels are idiosyncratic. Some are set and forget. Others need a fiddle with both compression and needle. If you can set the needle and leave it alone, run time is pretty predictable. Main virtue is a way of being weird. I've had a number of people tell me I am the only person they have seen fly a diesel, or that I am the only person they have seen make one perform well.
10-26-2011, 06:24 PM
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RE: What are the pros and cons to running diesel
On the Silver Swallow I leave the needle and just fiddle the comp , have to back it off to start , and I set the needle leaner each flight to get a long runtime, the Fora can start, with the comp and needle untouched ,and just runs , they all seem a bit different
Thats on the same fuel too
My Silver Swallow just wont start fully compressed , dont know why
Thats on the same fuel too
My Silver Swallow just wont start fully compressed , dont know why
10-26-2011, 06:34 PM
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RE: What are the pros and cons to running diesel
RF, I would run into a problem, I have two more heads than I have engines, I have a head for an OS .61sf and one for a K&B .40. Some day I'll get those two engines.
10-26-2011, 06:42 PM
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RE: What are the pros and cons to running diesel
G'day again
A bit more on the smell of diesels.
The smell of model diesel fuel is quite pleasant. The ether has a sort of sweet smell and it dominates the smell of the unburned fuel.
But once it is burned, the smell is dominated by the smell of the burned kero. It is not so much that it is unpleasant but that it permeates everything it touches. It is quite hard to get it off your hands, it seems to coat your clothes and it just likes to hang around. Most of all, it is smell that wives seem to notice and not like.
Cheers
Mike in Oz
A bit more on the smell of diesels.
The smell of model diesel fuel is quite pleasant. The ether has a sort of sweet smell and it dominates the smell of the unburned fuel.
But once it is burned, the smell is dominated by the smell of the burned kero. It is not so much that it is unpleasant but that it permeates everything it touches. It is quite hard to get it off your hands, it seems to coat your clothes and it just likes to hang around. Most of all, it is smell that wives seem to notice and not like.
Cheers
Mike in Oz
10-26-2011, 06:50 PM
#32
RE: What are the pros and cons to running diesel
mike 109 if you get some on your cloths beat your wife to the washing machine, all kidding aside I stand on the other side of the exhaust martin
10-26-2011, 06:51 PM
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RE: What are the pros and cons to running diesel
Many thanks for all the replies everyone.
I do have to say though that model diesel fuel is cost prohibitive. Seeing that Ican't purchase ether locally w/o some special certification, makes me assume that I would be stuck having to purchase model diesel fuel at $12 a quart. So my question to everyone is this. Do you need ether to continue the combustion cycle, or can you get away with starter fluid just to get it running, then automotive diesel throughout?
I do have to say though that model diesel fuel is cost prohibitive. Seeing that Ican't purchase ether locally w/o some special certification, makes me assume that I would be stuck having to purchase model diesel fuel at $12 a quart. So my question to everyone is this. Do you need ether to continue the combustion cycle, or can you get away with starter fluid just to get it running, then automotive diesel throughout?
10-26-2011, 07:30 PM
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RE: What are the pros and cons to running diesel
No, ether is only needed for starting. People have gotten straight kerosene and oil to work. Just needed a warm-up on regular model diesel fuel first.
"Just" is not really the right word to use. Having to warm-up on one fuel and then quickly switch to another is kind of silly in a model airplane application. Added effort too. One would have to readjust everytime when switching to straight kerosene and oil.
"Just" is not really the right word to use. Having to warm-up on one fuel and then quickly switch to another is kind of silly in a model airplane application. Added effort too. One would have to readjust everytime when switching to straight kerosene and oil.
10-26-2011, 07:32 PM
#35
RE: What are the pros and cons to running diesel
JUKER I think there is it least 1000 posts on all the fuel varients including straight #2 diesel. In at least 60+ years of model diesel operation its still ether, kero and lube oil mainly castor or castor and synthetic mix, most auto store starting fluid has a low ether content. John Deere is the only one I know of that has a very high ether content and cetane booster amsoil seems to be the best. If you get ready made (davis here in the USA) no issues, at$5 a can for John deere, you need about 2 cans to make a qt add the price of the kero, and castor the cetane booster is not that much you are about the same cost plus the time to mix,
Overseas the guys do mix since no commercial fuel available, UK excepted they have Model techniques premade
fuel is the cheapest part of our hobby martin
Overseas the guys do mix since no commercial fuel available, UK excepted they have Model techniques premade
fuel is the cheapest part of our hobby martin
10-26-2011, 07:33 PM
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RE: What are the pros and cons to running diesel
G'day
Fotunately I was flying diesel powered control like models when I met my wife many years ago and although she does not particularly like the smell, she has learned to tolerate it.
I also used to rebuild ancient Land Rovers and the smell of Extreme Pressure 90 grade oils was also a constant companion.
The worst offenders are the rags I use to wipe up the oil residue but even these smell OK after going through the wash (in their own special load).
Diesels for me these days are a diversion when I want to do something a little different. My collection is something like -
Super Tigre G2015D built from scrap parts.
Silver Swallow 1.5cc
PAW 1.5cc RC
Peter Burford 0.33cc
3 x Taipan 2.5 plain
PAW 2.5cc RC
PAW 40 D
Irvine 40D
Enya 41 4CD
Mike in Oz
Fotunately I was flying diesel powered control like models when I met my wife many years ago and although she does not particularly like the smell, she has learned to tolerate it.
I also used to rebuild ancient Land Rovers and the smell of Extreme Pressure 90 grade oils was also a constant companion.
The worst offenders are the rags I use to wipe up the oil residue but even these smell OK after going through the wash (in their own special load).
Diesels for me these days are a diversion when I want to do something a little different. My collection is something like -
Super Tigre G2015D built from scrap parts.
Silver Swallow 1.5cc
PAW 1.5cc RC
Peter Burford 0.33cc
3 x Taipan 2.5 plain
PAW 2.5cc RC
PAW 40 D
Irvine 40D
Enya 41 4CD
Mike in Oz
10-27-2011, 08:20 AM
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RE: What are the pros and cons to running diesel
I seem to recall on a thread here 3 or 4 years ago mention of additives that would actually give the burnt residue a pleasant smell and that there was different smells available. You could actually come home from a day with diesels smelling pretty
. Any body know anything about that[8D].
Denis
. Any body know anything about that[8D].Denis
10-27-2011, 08:37 AM
#38
RE: What are the pros and cons to running diesel
Dennis go to the source Davis diesel, think Bob Davis mentioned this a couple of years ago, think the fragrance oil used in candles at the craft stores ( only a guess) martin
10-27-2011, 09:16 AM
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RE: What are the pros and cons to running diesel
10-27-2011, 11:46 AM
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RE: What are the pros and cons to running diesel
For glow engines too:
http://www3.towerhobbies.com/cgi-bin/wti0093p?&C=PFE
http://www3.towerhobbies.com/cgi-bin/wti0093p?&C=PFE
10-27-2011, 01:33 PM
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RE: What are the pros and cons to running diesel
ORIGINAL: AMB
............ beat your wife to the washing machine.................
............ beat your wife to the washing machine.................
"............ beat your wife with the washing machine................."
My son was a heavy diesel mechanic so its no issue to wash his clothes with the ones worn at the field, but the smell in the car does put uneducated passengers off until the windows are wound down!
10-27-2011, 02:46 PM
#43
RE: What are the pros and cons to running diesel
Recyled flyer Will take the odor of diesel anytime, a few years back my silver tip fox could not hold it and wet the seat of my SUV nothing beats the smell of fox wee wee
took a week to get rid of it cleaning, windows down every day for the week martin
he went along on the drive to the field
took a week to get rid of it cleaning, windows down every day for the week martin
he went along on the drive to the field
10-27-2011, 05:01 PM
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RE: What are the pros and cons to running diesel
ORIGINAL: Hobbsy
RF, I would run into a problem, I have two more heads than I have engines, I have a head for an OS .61sf and one for a K&B .40. Some day I'll get those two engines.
RF, I would run into a problem, I have two more heads than I have engines, I have a head for an OS .61sf and one for a K&B .40. Some day I'll get those two engines.
(But you really don't have a K&B .40? What kind of American are you!)
10-27-2011, 05:12 PM
#45
RE: What are the pros and cons to running diesel
recycled flyer Give Hobbsy a little time, the way he keeps coming up with more engines I am beginning to think he plants seeds in the ground and grows them
martin
martin
10-27-2011, 05:17 PM
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RE: What are the pros and cons to running diesel
I am not a comlpete loser in that respect, I have this K&B 1.00 which was lousy glow engine but a great Diesel. In the picture its turning a Graupner 14x7 three blade at 8,500. When I had my old slab tailed H9 UltraStik this was its mojo. I may put it on my newer UltraStik Lite. I built the Lite with quad flaps but have the inboard flaperons ancored in neutral with short control rods.
10-27-2011, 06:08 PM
#47
RE: What are the pros and cons to running diesel
Hobbsy and the rest of you chaps here is myOS BX 1.08 Davis head the irvine 40D davis head next to it for size comparsion. I do not have a clue what to put it in
its big its heavy
its big its heavy
10-27-2011, 06:21 PM
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RE: What are the pros and cons to running diesel
ORIGINAL: AMB
Hobbsy and the rest of you chaps here is myOS BX 1.08 Davis head the irvine 40D davis head next to it for size comparsion. I do not have a clue what to put it in
its big its heavy
Hobbsy and the rest of you chaps here is myOS BX 1.08 Davis head the irvine 40D davis head next to it for size comparsion. I do not have a clue what to put it in
its big its heavy
10-27-2011, 06:37 PM
#49
RE: What are the pros and cons to running diesel
Recycled flyer maybe a motorized bicycle also?? Rim drive
This was aquired during my worst outbreak of D>A>S ( diesel addiction syndrome). the intensity has greatly decreased and confined to the smaller ones now
martin
This was aquired during my worst outbreak of D>A>S ( diesel addiction syndrome). the intensity has greatly decreased and confined to the smaller ones now
martin