wiper arm detail

[madpaddler]

I know this is a crazy question. My son wants to know why the drivers side wiper arm has the "scoop" and the other does not. I hate it when I can't offer an answer to a 12 year old. I just told him the driver seat has many advantages, the cool wiper was just one.

[pbastyr]

It catches air flowing over the car at speed to help press the wiper against the windshield.

[Poon]

My 1972 has both of the arms with the little air scoop. Maybe at one point one of the wiper arm was replaced with the non-scoop type?

[madpaddler]

Thanks, that makes sense, just wonder why it is only on one side... my last 02 had it only on the drivers side as well.

[Guest]

This is easy. The drivers side has it to keep that side clear to see. The passengers does not because they do not need to see. Even BMW's today are the same. Only the drivers side has the air scoop. It is simply to ensure the driver car see while driving.

[Guest Anonymous]

scoop wipers don't work above 95mph. Just a little FYI

they lift about 1/2 way up.

[jerry]

scoop wipers don't work above 95mph. Just a little FYI

they lift about 1/2 way up.

too bad none of us law-abiding citizens in good standing will ever experience that phenomenon.

heck, my 3.91 diff would have to spin like mad to attain that speed...

[Napes]

It also has to do w/ the fact that the driver's arm catches wind differently from being near the outside edge of the car when it's in the more vertical position. The passenger wiper @ that point is more toward the center of the windshield and does not get effected the same way.

Bob Napier

[madpaddler]

That is a good answer on that, thanks, now I can sound like I know what I'm talking about!

[InkaSteve]

scoop wipers don't work above 95mph. Just a little FYI

they lift about 1/2 way up.

too bad none of us law-abiding citizens in good standing will ever experience that phenomenon.

heck, my 3.91 diff would have to spin like mad to attain that speed...

You should try a 4:11 at 85-90 mph....

[rogerspeed]

It also has to do w/ the fact that the driver's arm catches wind differently from being near the outside edge of the car when it's in the more vertical position. The passenger wiper @ that point is more toward the center of the windshield and does not get effected the same way.

Bob Napier

maybe? I have pictures of the RHD models back in the day straight from the factory have the airfoil (scoop) only on the right-handside. These wipers and mechanism are otherwise the same as the left hand drive cars

[John_in_VA]

scoop wipers don't work above 95mph. Just a little FYI

they lift about 1/2 way up.

too bad none of us law-abiding citizens in good standing will ever experience that phenomenon.

heck, my 3.91 diff would have to spin like mad to attain that speed...

You should try a 4:11 at 85-90 mph....

I added a deflector-equipped wiper arm to the passenger side, figuring it would keep the blade in better contact with the glass.

[02Les]

maybe? I have pictures of the RHD models back in the day straight from the factory have the airfoil (scoop) only on the right-handside. These wipers and mechanism are otherwise the same as the left hand drive cars

True, true.

[SteveJ]

scoop wipers don't work above 95mph. Just a little FYI

they lift about 1/2 way up.

Perhaps we can add an extra high-mounted wing such as was done on the E30 EVO M3.

[pkbinplano]

+10 HP +20 if you have two