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Happy New Year to all. I have a new one of these coming. I guess it is a Mill’s copy and from what I have heard is a good one. I had a K-Mill’s version that did run decent but was kind of crude. Any input on the Irvine version? Thanks,Dan ❓ ❓
From the ones i’ve seen, they are probably the best.
Very nicely put together, and run well.
l do have 4 original 75s and they are all pretty good too—all in ‘sport’ freeflight models.
Tomboy, Sporty, Slicker 42 and a Paageboy—all English stuff from the 50s.
Hi Dan
So you are the lucky purchaser of the $25 Irvine Mills from another forum? 😉 I was getting my beauty sleep when that one came up and I guess the previous owner is kicking himself for letting it go so cheaply.All you need now is a good old fashioned English design along the lines of what Gossie suggested and you would have a complete package.
Ployd
I was surprised to see this and no action taken and could not pass. Dan
foot note; engine arrived and is very nice. Quality + much nicer than the K-Mill’s I had. The K-Mills did run decent and stated very easy. The price was reasonable. This Irvine Mill’s is awesome.
How have you got on with the Irvine Mills?I have this and the 1.3.They are both great but the crankshaft on the .75 is weak and goes on heavy landings under power! I get the impression that they are more powerful than the originals.My 1.3 burps a lot.
As mentioned earlier I do have four original .75 Mills, plus an original 1.3 and an Indian one. The Indian one is one of the good ones with no issues—-runs really well.
Re. any of them ‘burping’ I do feel that has to be either a tuning problem, too rich, too lean or low on the comp. or fuel mix.
Best fuel I have found for them and in fact a good mix to make any diesel engine run reasonably well is equal parts of ether, kerosene and castor oil. 🙂My engines dont like the weather here at the moment.It is cold and damp.I am sure you are right about the fuel and adjustment of the mix.The .75 runs much more smoothly.My Cox td 09 wouldnt keep running the other day,unless I partly choked it with a finger tip over the air intake.I will stick with rubber till it warms up a bit!
I will be in New Zealand soon so the weather should be better. There is supposed to be 20% nitro in my fuel.Time to clean out the carb!
20% ❓ No where near enough nitro. Any wonder it will not run properly. You need at least 40% to make it run well, and up to 60% to make it perform.
A good mix is 50% nitro, 25% Castor oil and 25% Methanol.New Zealand. Nice spot. Your first time? North or south island, or both?
Don’t pay any attention to the last email. 50% Nitro is engine and plane eating juice. Your TD engines should run on any nitro mix with the jets clean. Sometimes you need to take off the venturi and needle valve and clean the congealed castor oil out.
The TDs are the easiest engines to start and run. Unless I really need the power, 20% nitro is fine. The highest that I go is 35%.
I had my fill of diesels when I was a kid. Ran Enya and Super Tigre 2.5cc engines for 8 years. Started with a McCoy 049 diesel that beat the crap out of my fingers. That Enya was hopped up, and ran like crazy. Put my knuckle into it while running full speed, and can still see the scar. Was changed out to a Super Tigre after the Enya crankshaft broke while running full speed.
Dave, I will try cleaning the carb first.I am a bit short of plugs to risk much higher nitro.I got my Cyclon going with a new Nelson plug over the week end.Getting it out was easy in the end. It runs a dream.
Off to South Island mostly.My son lives in Dunedin.We are there for 2 months but we will get to the north island before we return to England via Fiji and my wifes sisters place on Montreal.Been to N.Z. 3 times before.I would like to live there but the wife still likes Blighty!
>Don’t pay any attention to the last email. 50% Nitro is engine and plane eating juice.
I disagree entirely. “Don’t pay any attention to the last email”
TD’s LOVE nitro and definitely perform steadily better as the % is increased. There’s a world of difference in performance between 20% and 60%.
I’ve run .09’s, .049’s and .020’s on 60% for many years with no deleterious effects – though I do apply some sort of after-run oil after every session. Balljoints have to be tightened once in a while but that’s common – nothing to do with nitro content.
As for high nitro being ‘plane eating juice’ – BS! Last year I retired one after 25 years of flying on high nitro – general wear and tear, etc. but no effects from fuel. All the others are in fine shape.
And just how much nitro do they use in those great performing FAI power events??
If you want significant power increases, try a better engine! I just like my engines to run well, and haul the plane up to the nearest thermal. Don’t really care if I get the last 500 rpm out of the engine.
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