I hate piss on your bonfire, but that is zero cool 
The bar is going to scratch the fork legs.
You need to curve it forward.
And aluminium is not strong enough.
It will break at the folds in a pretty short while.
My light bars are made of 4mm stainless steel.
Stainless is approximately 3x stronger than aluminium.
So you would need about 12mm thickness to have it strong enough in aluminium.
And 12mm aluminium won't bend properly. Hence the use of stainless
Cheers,
Michel
The bar is going to scratch the fork legs.
You need to curve it forward.
And aluminium is not strong enough.
It will break at the folds in a pretty short while.
My light bars are made of 4mm stainless steel.
Stainless is approximately 3x stronger than aluminium.
So you would need about 12mm thickness to have it strong enough in aluminium.
And 12mm aluminium won't bend properly. Hence the use of stainless
Cheers,
Michel