I'm just shocked and amazed that someone of your vast (alleged) experience as a "modeler" going all the way back to your youth would even have to ask the question! With all those models you say you built as a youngster, I just can't believe you didn't fly them? Because if you flew them, you would have experienced the condition that occurs when you feel the need to invert the model to start it.You would know it depends on a lot of things, like weather and temperature. You would know that when it's cool out and it takes more fuel to start the engine and with the model upright and engine inverted, gravity takes affect and some falls out the venturi, so you turn the model over so all the choke or prime goes in the engine. You would also have known all the things that Dave pointed out out from experience. You would know that it used to be in competition, that you got a 5 point bonus for getting the engine started and model in the air in under a minute, so you got real familiar with what it took to start you engine because if you used an electric starter you did not get the 5 point bonus and you took every action possible to ensure a one flip start.. Yes, I am shocked and amazed!
Type at you later,
Dan McEntee
Gee Dan,
I'm shocked also, and I do have years of experience with those Rossi's and all in my pattern ships. Yes, I flew them and started engines. Seeing you mentioned it, I put in more time than what it was worth. Time away from family and other important things. I wish I had the time back to use differently.
Nuff of that, but let me explain.
Sure, myself and many others HAVE turned models over to start them, plenty of times, with the engine upright instead of inverted, for one reason or another because they wouldn't start. Even in R/C. Actually made for easier starting, or in some cases solved a stubborn engine starting issue.
Engine upright was always the cure! ENGINE UPRIGHT WAS ALWAYS THE CURE.
So I thought!
Then, here comes this Thread on engines. "Inverted engine vs. side-mounted or upright."
So I replied and here's what I said,
"Looks prettier, possibly, but my guess is they are not as easy to start.
Is this why you see stunt ships flipped over in the hands of a holder while the engine is being started by another person?"
Then another reply came from Lauri Malila, who made a statement that had me thinking about engine starting all over again.
Here's what Lauri Malila said.
"But to the original question, cylinder up is maybe the most difficult for starting. L"
Well, you can imagine, with that said and who said it, now I'm not even sure anymore?
Here's the link to that Thread.
http://stunthanger.com/smf/engine-set-up-tips/inverted-engine-vs-side-mounted-or-upright/msg431582/#msg431582Brings us to Robert's video and I just asked to get other input.
Is there a definitive answer to this?
I don't belive anyone responded after Lauri's statement?