Sound when accelerating the first time after a start

I know what sound you're talking about, and I thought it was the radiator shutter closing.

 

I have the same sound and it sounds as though it’s coming from the driver’s side front wheel area. I’m quite sure my sound, as GRich and Electroingenur have mentioned, is the brake system check. I hear it one time at about 12 mph.

 

Hey Guys.
That sound that you hear is what used to be the trunnion bearings above the front springs that now consists of nylon on nylon rubbing against each other. When the car has been standing for a while they tend to stick a bit and then when you turn the wheel a bit they come free and no more sound is heard.
That's my experience anyway.
Hope that helps.

 

Hello, I have same exact sound coming from under hood when pulling out of driveway at 13-14 mph. Like a pebble rolling around in wheel well
Every time car is first driven after turning off.

any idea what it could be?