180° swipe if not mounted in the glass it’s self will take the blade completely off the glass on both sides . Troy has one from a dodge mini van that 180. And mounted it just above the glass in the roof and no way to stop it from leaving the glass. Guessing would need a 160° ish .
My wiper drive is 3” above the glass . The minivan was using about 170 degrees. I changed the drive pin location on the drive gear to drop the swing shorter . I now have about 110 degrees.
If you want more figure out what max swing will work from the wiper post . You can move the pin location but are limited due to the way the sprocket is made for strength. I only had one good spot to try and it worked out ok . 3 hours of my life wasted . Lol
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