TT reduce motor power
 

I upgrade my Trex 450 Sport from belt driven to TT after a crush I had. The belt cut while I was flying.So i decided to convert it to TT.

By using TT I notice that my motor power reduced too much and fly time also reduced.

Is this change ineluctability? Is there any way to avoid loose power ?

TT is only MORE efficient. Somethings wrong.

How many times does the head spin when you spin in fast with your finger.. I think my 450 Pro with TT was like 14 turns!

I agree.The TT should give more power,not less.
You have a problem somewhere else.
When I land my heli with TT drive and hit throttle hold,It takes a full minute or more for the blades to stop at zero pitch.T 500