Unable reach cruise after takeoff from Miami Airport
Your wird s 120 knots - in the MAX you sshould rotate around 140 -160 knots depending on weight. You also should have flaps 10-15.
Flaps 1, 5, 10, 15, 25 are all approved takeoff flap settings on the 737MAX.
Seems like a case of premature rotation and subsequent loss of lift leading to a stall.
Simbrief’s performance calculator tool offers accurate and precise takeoff V-speeds that I personally find to be extremely helpful.
This 737MAX flying guide is also an excellent starting point.
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I was talking about usual.
There is a really well made guide on how to fly the 737 Max 8 in Infinite Flight. I recommend reading through it to help you 
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You won’t get far rotating at 120kts on a medium/heavy weight Max. 140kts and a shallower climb while gaining speed is the way to go, but it all depends on your weight.
Ok so I have a few things to say ab this. First off is that if you’re new to an aircraft and don’t know all the things about it, you should take a look at the manual to see if you can solve your problems. Second is to use SimBrief for flight planning, weights, takeoff speeds, flaps settings, and more. You can directly link your Navigraph account (or create a new one as it’s free and can be used without a subscription) via in game on your profile. Third are some tips for taking off (generally). If you’re in a B38M you would like to have flaps at 5 degrees for low to medium weight, and for short runways and/or high weights, 10 degrees of flaps is sure to do the trick. You should aim for a speed of around 145-165 KTS depending on weight with an initial climb rate of +1,000-2,000 FPM also depending on weight. Lastly you should also do some personal training on solo for landing and takeoff to make sure no mistakes are made when flying on TS or ES. On that note, hope you read this and apply all of not only what I have said but what others have said to mind and have a great flying experience in Infinite Flight with you and others! Have a good day!
Flaps 5 is by and large the most common setting used on the B38M, and is sufficient in the vast majority of cases. 15 and 25 are really only used whenever necessary (usually if the aircraft would be runway limited with anything less than that), due to the increased drag and decreased climb performance as a result.
I always use simbrief takeoff and landing profiles, especially for landing the Vref speeds are really accurate.
Oh lol I almost always use 15 bc I’m so used to MDW runways 
Should rotate at around 150kts it’s always a smooth take off at that speed 
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The only time you’ll even remotely push 150kts for a Vr speed is if you’re at 72,600kg and using Flaps 1 (Vr 149) or if you’re at 80,000kg and using Flaps 5 (Vr 151). Official V-speeds put the plane between 120-140kts for typical weights and takeoff configs.
I mean this in the nicest way, but Alex and I put together a VERY detailed guide telling you exactly how the plane flies, and it has data pulled directly from Boeing operating manuals. That has been linked many times already in this thread, and the OP has been directed to reference said guide multiple times. Coming in with what’s blatantly incorrect information because it feels smooth to you does not really help contribute positively to this thread, which in and of itself does not need any additional advice since the issue was addressed thoroughly by @TheGlobalAviator in the second reply.
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