earoffs are a motorsport staple. With a stack of tearoffs clipped to the faceshield all a rider has to do see his way clear when the dust, dirt and oil starts flying is reach up and rip off the top layer of that tearoff stack. Vision is restored. This gets repeated throughout the race, or as long as those tearoffs last—and that’s the problem with tearoffs. Pile enough of them on a faceshield to last through a long race and you can hardly see at the beginning of that race! It’s been determined that every tearoff strip—nothing more than thin strips of plastic, really—blocks light transmission, and vision, by 8 percent. Stack six or seven of them on and light transmission is down by 50 percent.








The Velocity SpeedStack7™ features seven layers of optical grade tearoffs laminated together, giving riders the same optical characteristics as a single tearoff sheet.










    The Velocity SpeedStack7™ is a better idea, and better still Velocity’s adapted this new tearoff technology to the street, too, where it’ll be equally welcomed. They’ve come up with a faceshield-saver system, as well, making clean-up as easy as pulling a tearoff. And the SpeedStack7™ is available in smoke and amber shades, which means you can ride all day—then ride home at night without the hassle of changing shields.
     It all starts with the SpeedStack7™, and forget about those old, thin strips of plastic, SpeedStack7™, both the race and street versions, use only the highest quality “optical grade” Mylar™. It’s manufactured by DuPont, and the system is actually a complex optical device, with all the light-transmission characteristics found in a camera lens or a telescope.
     SpeedStack7™ (patented) optically laminates its seven layers of tearoffs together, displacing any air in the stack, a major reason conventional tearoffs lose clarity. A seven-layer SpeedStack7™ has about the same optical characteristics as a single tearoff sheet. Two or three SpeedStack7s™ can be safely layered making up to 21 tearoffs available, more than enough to last through the longest race. SpeedStack7™ works on any flat racing shield using either the existing tearoff posts, or Velocity’s tapered-aluminum posts. There are “Speed Tabs” to reduce fluttering of the tearoff tabs, too.









Eric Bostrom, wearing the Velocity SpeedStack2™, at the recent Daytona race.

 

 

 

 

 

 

     To put all this on the street Velocity’s developed a Perimenterseel™ Mounting System. It allows the SpeedStack7™ to be installed on any flat faceshield with no mounting posts required. The Perimenterseel™ creates a full seal around the tearoffs, too, keeping rain, moisture or dirt from getting between the last tearoff and the helmet shield. There’s no adhesive residue left on the faceshield, either.
     Velocity’s Shield Protector System uses that same Perimenterseel™ Mounting, only this time to adhere three layers of 4 mil. protection (SpeedStack7™ tearoffs are 2 mil. thick). Each layer is easily wiped clean, and when it becomes too scratched or beyond cleaning it’s simply removed.      The faceshield stays good as new. Ingenious.
     Parts Unlimited has it all, so call your rep about tearoffs for the 21st century.


Parts Magazine
Volume 11 #6


Parts Magazine Index