Contemplating an SS-7 - Newbie builder

[Esser]

Can I just chime in and say that this forum is usually a very civil and informative place? I have gotten great information from all opposite ends of opinions on this site.

However, Greg, without starting a spat between you and me, a lot of times I read your comments and find them very aggressive in nature. In fact, I only see tension between members when your comments are involved. So in the future, and this goes for everyone on here to keep this forum great, can we keep the aggression to a low as much as possible? People have different opinions and insights and having real conversation about those differences we all come out better for it.

Belittling other members opinions effectively shuts down conversation and helps no one. I feel that this goes for all of us to be the bigger person.

Have I been perfect in the past? No. But everything I say on here us to hopefully help someone else and it's never my intent to belittle someone. If I am wrong, or perceived to be wrong I can listen to someone else's RESPECTFUL opinion and decide from there whether I respectfully disagree or agree.

[Floog]

K u m b a y a

[Danzer1]

Read this: http://www.epi-eng.com/piston_engine...and_torque.htm

Why does Lycoming, Continental and any other direct drive engine manufacturer limit rpm to 2700 to 2750 or so? It is not for engine longevity although that is a byproduct. It is because they all produce max power (torque) at or near 2400 rpm. There is simply no reason to run them higher than 2700 rpm or so. They do because the props are inefficient.

Same thing when Ford changed there ratings on the Triton V10 from 362 hp @ 5000 rpm to 320 at 4000 rpm. Max torque for both ratings was still 457 ft lb at 3250 rpm. Everyone got all upset and said Ford detuned the engine and oh my god it doesn't produce as much power anymore. Wrong - Ford simply rpm limited the engine from 5000 to 4000 rpm because it didn't have any reason to run at 5000 in the 1st place. It is exactly the same engine and still produces exactly the same amount of power.

Maybe there's tension because I'm the only one here with the balls to set the record straight and separate opinion from mis-stated "fact". "Adults" would admit when they are wrong! So be it. I'm done here to.

Cheers

[jiott]

Good; I think this is a good place to end it. I joined this forum to make friends, not enemies, and share all kinds of good information. I apologize if I have gotten too aggressive at times.

[rosslr]

Come on you guys - I'm with Esser - you guys have a heap of knowledge that I have benifitted from over the past years - sometimes the topics are beyond my understanding not being from an engineering or technical background - but I really learn a lot when you enter into the conversation and work at creating understanding together - despite coming from different starting points. I can understand you frustration Greg that everyone doesn't instantly understand where you are coming from, but that is the challenge of communicating - the world would be easy if it wasn't for people! Jim, I have always found your explanatory style helpful and accessible.

So I certainly hope neither of you take your bat and ball and go home!

Less frustration and more trying to understand where the other is coming from - and dont loose your sense of humour!

Was that you singing Kumbaya Doug? Blessed are the peacemakers!

r