912 ULS no more than ~4800 RPM

Roger, and Everyone else,

Don't think I am at all upset.
When I said, "Thanks, for calling me out", I wasn't being satirical.
I was truly Thankful for everyone raising the BS Flag.

I think getting to the truth is more important than inflating egos.
The truth is all that matters.
I must have had a Brain F*rt when I wrote that because as soon as I saw the dissenting comments I knew It was wrong and should have known better.
Good Calls!  Really!!!

I like to assist on this forum because the best way to learn is to teach.
I learn from the questions by having to search for the answers that don't have.
Every time I respond I read my replies multiple times before hitting the Post button, expecting someone to nitpick me.
I choose my words very carefully and often agonize over whether I should say that something Should, Could, Would, Will, May, or Might happen when I recommend something.

- - -

Roger likes to push the 5700 rpm Cruise setting.
And I belong to the 5700 rpm Climb club.
I am generally in no hurry to get anywhere but above the trees.
But I think we can both agree to disagree. ?
What's a couple of hundred rpm amount friends? ?

Howdy Bill,

We're on the same page in looking for truth in swapping ideas. I never get upset either. Just another day I hope to learn something new. Plus sometimes there is no exact answer just a personal preference.

"Roger likes to push the 5700 rpm Cruise setting.

And I belong to the 5700 rpm Climb club."

Just personal preference for individual needs.

Edge performance has a series of videos of dyno testing of the all the 912 series engines. The first part of each video is testing of the Stock Engine, followed by testing of their modified engine.  The stock engine test is what interests me.  What I find most informative is to look at the HP produced at whatever RPM you have your climb set up for (you have to be quick with the pause button).  This shows you the penalty (in HP) you are paying for the RPM of your climb setting.  The 912iS Sport produces its torque (and HP) earlier in the curve. It’s quite impressive, producing 97 HP at 5050 RPM.  This shows that you can set the prop for a 5100 RPM climb with very little penalty to climb performance (HP), and still get good cruise performance. These dyno tests yield better performance than shown in the Rotax performance graphs, which may be done under different conditions. 

The videos are here:

https://www.youtube.com/results?search_query=rotax+912+dyno+test