Well done, a good summary! Production changes happened throughout each engine's life. Small things happened regularly. Even I struggle to remember what and when. Only the mk4 was made by OS but using a lot of Irvine tooling and design. It was a collaboration as you say. The Q40 was one we were very proud of. A very different engine internally. The silencer was unique and very effective without restriction.
Mark ---- Thanks for the explanation of "ABC" asked by Mark Ford below. Some of us maybe old , maybe 50+ years since doing any of this ---- So, explanations like this really helps in understanding it all since times has changed ---- keep on giving explanations and maybe , just maybe some day we'll be as good as you. Forgot what terminology you used in a video on a build ---- but, after seeing HOW you used it --- here in the States we call it a Thumb Tack wasn't quite sure what you were referring to ----- Thanks Again, ----- Rodney
To knowledge Irvine in their later years only made ABC apart from their mid sized helicopter engine which was available in either ring or ABC, couldn’t say further but I believe this heli engine was dropped when OS started producing them.
Never owned one but a buddy in our club has one. Seems as good as any of the better engines. I have a Merco .40 which runs well enough but it's no power house.
Hi, pleased you liked the video, think the glow engine industry declined due to increased production costs and reduced demand. Irvine are great engines, definitely my favourite 😀
Electric popularity and costs of production. I remember when you could go to Hong Kong and buy new OS engines for 1/3 the price here. I knew someone who business sent him once a quarter. So he stocked up and made merry selling them to us cheaper than UK shops but earning him a pretty penny. It's amazing how many engines you could fit in a suitcase then!
@@johnw5154 electrics are fine to a small medium size planes...but I still prefer a engine for a 40 size and above airplane... as the cost of battery and motor goes up.. and again nothing compares the torque of an engine compared to a electric motor.
Hi Mark. Thank you for sharing your collection with us. Even though I am restricted to flying electric I still have a soft spot for IC motors. And I still have a small collection.
Hi, the honest answer is I am not sure, but I would expect so, as they were essentially the same engine but with a different head and a few tweaks, I suspect 😀
Nice history lesson on Irvine engines. I own 3 Irvine 53 mk lll’s Fantastic engine, they look great and very reliable.
Thanks for the comment, pleased you enjoyed the video
Well done, a good summary! Production changes happened throughout each engine's life. Small things happened regularly. Even I struggle to remember what and when.
Only the mk4 was made by OS but using a lot of Irvine tooling and design. It was a collaboration as you say. The Q40 was one we were very proud of. A very different engine internally. The silencer was unique and very effective without restriction.
Thanks Mark, appreciate your comment, glad you liked the video
Great informative video both historical and technical development
Thank you very much, really pleased you liked the video
Mark ---- Thanks for the explanation of "ABC" asked by Mark Ford below. Some of us maybe old , maybe 50+ years since doing any of this ---- So, explanations like this really helps in understanding it all since times has changed ---- keep on giving explanations and maybe , just maybe some day we'll be as good as you.
Forgot what terminology you used in a video on a build ---- but, after seeing HOW you used it --- here in the States we call it a Thumb Tack wasn't quite sure what you were referring to ----- Thanks Again, ----- Rodney
Nicely done Mark. Great info.
Thanks Norm, really appreciate the comment
Great video. Cheers. Very informative. Will be checking my Irvine shortly.
Thanks John, really pleased you liked the video, thanks for the comment 😀
@@MarkRobinson555 no problem. Was nice watch. Wish there were more like it on some of the other popular engine models.
To knowledge Irvine in their later years only made ABC apart from their mid sized helicopter engine which was available in either ring or ABC, couldn’t say further but I believe this heli engine was dropped when OS started producing them.
Good stuff thank you. I wish they had called the Rolls Royce engines they deserve it . I have a whole collection of them from .25 through 1.5 .
Thank tyou very much, really appreciated
Is .25 And 1.5 a measure of kW?
Great bunch of engines!
Yes, my favorite engines
Never owned one but a buddy in our club has one. Seems as good as any of the better engines. I have a Merco .40 which runs well enough but it's no power house.
Thanks for the comment, I also like Merco engines, great runners
The Irvine40 Diesel is very good too....
Yes, totally agree
Really useful Mark cheers
Thanks Mark, appreciated 😀
great info...I wonder why some of the companies have stopped making the engines.. apart from OS which other glow engines do you recommend?
Hi, pleased you liked the video, think the glow engine industry declined due to increased production costs and reduced demand. Irvine are great engines, definitely my favourite 😀
Electric popularity and costs of production. I remember when you could go to Hong Kong and buy new OS engines for 1/3 the price here. I knew someone who business sent him once a quarter. So he stocked up and made merry selling them to us cheaper than UK shops but earning him a pretty penny. It's amazing how many engines you could fit in a suitcase then!
@@johnw5154 electrics are fine to a small medium size planes...but I still prefer a engine for a 40 size and above airplane... as the cost of battery and motor goes up.. and again nothing compares the torque of an engine compared to a electric motor.
Hi Mark. Thank you for sharing your collection with us. Even though I am restricted to flying electric I still have a soft spot for IC motors. And I still have a small collection.
I have 2 of the Irvine .15 in the box
Do these differences apply to the diesel versions?
Hi, the honest answer is I am not sure, but I would expect so, as they were essentially the same engine but with a different head and a few tweaks, I suspect 😀
@@MarkRobinson555 The .40 diesel in effectively a Q40 with a .46 Heli crankshaft and 6 mm bore R/C carburettor
@@fiery1962 thank you for the info 😀
@@MarkRobinson555 A pleasure Mark. I must run my Irvine .40 and .20 diesels. Lovely engines.
Interesting, what is ABC standing for?
Thanks Mark, ABC stands for Aluminium (piston), Brass (sleeve/liner) and Chrome (coating on inside of liner).
Sir can you sell this engine?
Sorry I don't have any for sale