Yep with the suspension relaxed like that I would say you should have around 1 to 1 1/2 inches of slack it is better loose than to tight for sure

 

So I came back from the test ride and I have to say the sound is not gone but a bit more quiet... I took out all the oil and small sand mix away near the front sprocket.
But it is more clear voice... Tough it should be tight enough and not too loose it still feels like when I give gas the chain like might hop against something and slowly with increasing speed disapears.
Definatley not the bareings and not sprockets and not brakes and not chain... but stilll feels like my belly would touch the ground when I hear that sound...

 

Sad news.. I letted an aqointance of mine to ride and take a hear of that noise.. and he recon itc comes from inside the motor. He feels like it comes from the down front end witch is the so called belly I heard,..,
And I changed the brake pads... Now the brakes dont function good.. will see I will take her to a ride today to see if that problem vanishes or not..
And it hasnt started two mornings in a row.. tough I have new oil in ... the battery seems to be pain in me ****... Well if something happens then everything together
Good days