Does anybody know if when riding on a bagger with windshield, cvan you wear a modular helmet with the whole front up in the complete open position if you keep it under 50 mph ?

 

You can keep it up going over 50 too.

 

At some point the flip up part will catch a lot of wind and will put a lot of muscle stress on your neck muscle as you fight to the wind.

For me (when I had my modular), I always put it down as long as my bike is moving.

 

I can ride all day at all speeds up to 100 with my modular helmet up I have the Shark Evo the whole thing rotates all the way back and is not in the wind blast at all it depends on which helmet you have and how tall the windshield is and how tall the rider is, many factors determine if you can ride with the shield up.

 

I'm over 50 and I can keep IT up all day if the wife has her hands in the right position.

 

Huge Shark EVO fan here - they are spendy but worth it to me. Does a great job as a full face and flip the chin bar all the way back for a nice 3/4 helmet.

Check out Revzilla for video reviews:
http://www.revzilla.com/shark-evoline

 

not a problem with Nolan (102 or a 104) modular either -- I have also done it with an HJC because when closed they are way too noisey in my opinion

 

Even with my windshield off, I ride with the front flipped up. Over 50 mph I drop it.

Behind the windshield, I can ride 80 on the interstate and lift it to eat and drink on long runs. No issues.

 

+1 on the shark evoline. Great helmet and well worth the cost.

 

the only ones designed to be ridden with the face up are the shark evoline and the roof boxxer/desmo.
roof doesnt submit for dot approval.