I was wondering how I could manage to make a certain object rotate on one axis at a consistent speed for a length of time.
I want to spin the object on its one axis for 400 frames or so, but whatever I do, it seems to slowly speed up and then slow down again.
Thanks!

Max 2008, Vista Home Premium 32 (SP1)
NVidea GeForce Go 6150
AMD Turion 64X2 TL-64 2.2GHz, 2Gb Ram, DX10.0
Black Screening Vista Laptop (above) Workstation that’s real good at 3ds Maxin’

Next to the set key button, change it to the straight line, instead of the curve.

make a keyframe at about 50-100 and see the speed u want, then go to curve editor, select the first and end keyframes and set the tangents to linear (or like its said above) , so its constant and doenst have those slowdowns, then go to “Parameter curve out-of -range type” and set it to linear. now go to Utilities and Track view utiilities, -> Create out of range keys, set the “before” to 0 and the “after” so it goes to 400 and create 1 keyframe, remember u have to add the amount of frames since the last frame u created, so if u made it at 50, after is 350, then change the out of range back to “constant” and change the tangent of the new frame to linear aswell, after that u can just delete the middle frame if u wish.