Motorcycle Streamliner - Windshields

[Calkins]

On page 128 of the 2013 SCTA rulebook, under section 7.H.7  WINDSHIELDS, it states that it must provide 120* of adequate horizontal forward vision.

Two questions.

#1  -  Does that included side windows too?  Like, it the canopy is forward of the rider a ways, and they can still see out the sides without moving their head.

#B  -  Does this rule take out being able to have a tire in front of the driver's field of vision?  I would 'assume' yes.

[kiwi belly tank]

The rule doesn't state "full 120 deg". There are a lot of vehicles with blowers or scoops taking up part of that 120 but I would think running blind in the front would be a bitch to aim & probably not go down well with SCTA.
This is a question you should take with Tech, you can only get opinions here.
  Sid.

[Jon]

The tyre blocking vision issue is the reason for the rule.
Look for older pictures of Streamliner bikes and a few of them had riders not being able to see straight ahead; Sam Wheeler's yellow bike, Dennis Manning's Harley powered Streamliner.

A lot if the current bikes have a stay or pillar that is inside the 120 degree arc.

It's a narrow margin that meets the 120 degrees of vision requirement for streamliner bikes and the 3" of helmet setback at the same time.

Cheers
jon

[Calkins]

Sam Wheeler's yellow bike

Cheers
jon

You read my mind sir!   

I shall have to look at a different design...