jhc
New arrival
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Diesels
Feb 20, 2005 6:54:17 GMT -7
Post by jhc on Feb 20, 2005 6:54:17 GMT -7
I really enjoy reading about diesels, I have used diesels for many years for mostly sport flying however I have used MVVS and Nelson 15s in Clown Racing. I just finished building an RSM Ringmaster (excellent kit) with an Irvine 20 diesel, just waiting for good weather to fly it. At the present time I have about 40 to 45 diesels in my collection, some of my favorites are Oliver Tiger, Mills and my Gordon Burford Deezil .12; another one is my FP 40 with an RJL diesel head. I know diesels are not for everyone but the more you run them the more you'll enjoy them, I know the fuel smells but so does glow fuel and glue plus model paints, it's just a matter of getting used to it.
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Diesels
Feb 20, 2005 18:41:03 GMT -7
Post by jimthomerson on Feb 20, 2005 18:41:03 GMT -7
Actually, I've run through maybe 10 gallons of diesel fuel. so far as I can tell, it does not smell. As I recall, I used to think it did. Jim
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Diesels
Feb 20, 2005 19:44:02 GMT -7
Post by downunder on Feb 20, 2005 19:44:02 GMT -7
It's a long time since I've used a diesel but I remember a friend of mine and I decided to try our hand at team race with his MVVS. We built a model and started practising. That engine always started first flick and I got the pitstop down to about 4.5 seconds from catching the model to releasing it again so we thought we had a fair chance in the state championships. Came the day and an hour before the event I decided to check out the engine. It wouldn't start! It fired so fast I couldn't get my finger out of the way and I ended up with blood over me, the model, the ground...everywhere. I told my mate that someone had spiked our fuel. Maybe 20 years later I met up with him again and reminded him about that day. He started looking all sheepish and confessed that seeing the engine had worked so well with 1.5% amyl nitrate he'd mixed it at 3% for the event!! Sheesh...sabotaged by my team mate....LOL. He made up for it though by giving back an ETA Elite that I'd forgotten all about.
My favourite diesel though was a Taipan 2.5cc ball race with a rear drum induction.
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Diesels
Feb 21, 2005 21:26:27 GMT -7
Post by jimthomerson on Feb 21, 2005 21:26:27 GMT -7
We had an 80 degree day with sunshine and light wind today. I put up five flights with my ST G20-15 diesel powered #5 Easy. I had not flown it for a couple of months but plan to fly it at the VSC. The settings were still right on. Used a starter, as the engine is well worn and does not start easily by hand at running settings. I have a uniflow tank, and. on one flight I lost the vent cap. The engine did not like it but soldiered on. There was some fuel siphoning as well. Even so, it made it through the OTS pattern OK. I made a new vent cap with a piece of tubing and a BB and put up a couple more flights with no problem.
Jim
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xain
New arrival
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Post by xain on Mar 8, 2005 3:49:59 GMT -7
If you don't like the smell of diesel fuel, try and get hold of some UK spec fuel (eg Model Technics). They use isopropane nitrate instead of amyl nitrate, which doesn't stink at all. All you smell is a whiff of parafin and a honk of ether. The exhaust has a nice "warm" smell like a storm lantern.
Jon
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GCB
New arrival
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Post by GCB on Apr 4, 2005 7:31:14 GMT -7
JHC, I see you have a DEEZIL in your list. I have one made by "Classic Old Time Engines" in Ohio. Runs well. The original DEEZIL got a bad rep when many of the later ones were apparently assembled by people who knew nothing about fits. Many never got it to run. I wonder how many have a runnable DEEZIL?
George
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jhc
New arrival
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Post by jhc on Apr 5, 2005 7:23:48 GMT -7
George, Over the years I've had several of the original Deezils and never, ever had one that ran, even the ones with super compression. The last one I had I put it side by side with my Burford Deezil and I noticed the exhaust port height was totally different (I'm not sure if there's a different stroke between the two engines), this is the only difference I could see just by eye balling it. I know the earlier ones had better fits and I'm still looking for one that will run, my Burford Deezil is a one flip engine, even cold. An RC friend of mine stopped by to see my engine collection and he had never heard a diesel run, so I pulled out the Deezil (which had not been run in 2 years), mounted it on a test stand, gave it three finger chokes and off it went with one flip (talk about impressing an RC flyer). Another friend of mine bought a Marz .15 off of eBay, we disassembled the whole engine (which appeared to be new), cleaned out all kinds of metal chips and black grinding dust, reassembled it, within five flips it was running fine (this is another engine with a bad rep). I just received six Oliver Tigers and four DAs, they all look in perfect running condition and most are new; looks like I'm going to have some fun running diesels as soon as it warms up a little.
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Post by Garf on Apr 5, 2005 9:47:28 GMT -7
Where do you get your amyl nitrate?
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jhc
New arrival
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Diesels
Apr 5, 2005 10:41:10 GMT -7
Post by jhc on Apr 5, 2005 10:41:10 GMT -7
Garf, I do not bother mixing my own fuel, AN is very difficult to buy so I simply buy Red Max fuel (they have 3 different blends; it runs about $28 a gallon. Diesel fuel can be obtained from Carlson Imports, phone & fax 602-863-1684 or email him at CARLSONENGINES@JUNO.COM. He also has a catalog full of diesels for $1.00. I suppose you could also order directly from Red Max, their ads are in almost every magazine.
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GCB
New arrival
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Post by GCB on Apr 7, 2005 6:01:43 GMT -7
Phil, You can get amyl nitrate from Eric Clutton (Dr. Diesel).
JHC I have two of the MARZ .15's. One has a black muff, the other has a natural aluminum muff. The first was used from *bay, the other new from Ed Carlson. The new one had the rotor fit too tight. After trying to lap for awhile, I settled on a thicker backplate gasket. Problem fixed. That is the first engine I saw that starting instructions said to turn the contra to meet the piston, then back off. It worked and started easily. It apparently had not been run at the factory and with each succeeding run it gained compression.
George
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