Inzane 17

Windshields and Gas Mileage

Started by Calboy, Wed 11, Sep 2019, 13:46:47

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Calboy

Do they affect the gas mileage? And if you think they do, by how much. I'm talking about the first generation Valkyrie, not just any bike.
Looking for answers from people who have actually ridden the same bike with and without the windshield mounted.
Thank you.

Willow

Yes, but not as simple as windscreen or  no windscreen.  The type and angle of the shield can also make a difference.

A mile or two per gallon normally.

98valk

I lose less mpg using a Rifle windshield which is more aero than the oem which I did have.

www.rifle.com
1998 Std/Tourer, 2007 DR200SE, 1981 CB900C  10speed
1973 Duster 340 4-speed rare A/C, 2001 F250 4x4 7.3L, 6sp

"Our Constitution was made only for a Moral and Religious people. It is wholly inadequate to the goverment of any other."
John Adams 10/11/1798

Moonshot_1

Quote from: Calboy on Wed 11, Sep 2019, 13:46:47
Do they affect the gas mileage? And if you think they do, by how much. I'm talking about the first generation Valkyrie, not just any bike.
Looking for answers from people who have actually ridden the same bike with and without the windshield mounted.
Thank you.

I would think that they would affect the mileage somewhat. But it is either the windshield pushing wind or you.

The effects it would seem can be mitigated by a sleeker angle of the shield and/or a riding position.

The bottom line for me is the bugs and bees. Windshield every time.
Mike Luken 


Cherokee, Ia.
Former Iowa Patriot Guard Ride Captain

98valk

Quote from: Moonshot_1 on Sat 14, Sep 2019, 14:32:54
Quote from: Calboy on Wed 11, Sep 2019, 13:46:47
Do they affect the gas mileage? And if you think they do, by how much. I'm talking about the first generation Valkyrie, not just any bike.
Looking for answers from people who have actually ridden the same bike with and without the windshield mounted.
Thank you.

I would think that they would affect the mileage somewhat. But it is either the windshield pushing wind or you.

The effects it would seem can be mitigated by a sleeker angle of the shield and/or a riding position.

The bottom line for me is the bugs and bees. Windshield every time.

the human body is terrible aerodynamically. I use a smaller memphis shades in warmer temps to keep the blast off the upper torso. I get 2 mpg more than not using it.  80+F temps better mpg due to air being less dense easier to move through.  using the OEM during 50F and below I always had 4 mpg loss, with the Rifle I only see 2 mpg loss. that has been my experience mostly mainly based on commuting to work same route everyday, same traffic.
1998 Std/Tourer, 2007 DR200SE, 1981 CB900C  10speed
1973 Duster 340 4-speed rare A/C, 2001 F250 4x4 7.3L, 6sp

"Our Constitution was made only for a Moral and Religious people. It is wholly inadequate to the goverment of any other."
John Adams 10/11/1798

Moonshot_1

Quote from: 98valk, (aka CA) on Sat 14, Sep 2019, 14:46:37
Quote from: Moonshot_1 on Sat 14, Sep 2019, 14:32:54
Quote from: Calboy on Wed 11, Sep 2019, 13:46:47
Do they affect the gas mileage? And if you think they do, by how much. I'm talking about the first generation Valkyrie, not just any bike.
Looking for answers from people who have actually ridden the same bike with and without the windshield mounted.
Thank you.

I would think that they would affect the mileage somewhat. But it is either the windshield pushing wind or you.

The effects it would seem can be mitigated by a sleeker angle of the shield and/or a riding position.

The bottom line for me is the bugs and bees. Windshield every time.

the human body is terrible aerodynamically. I use a smaller memphis shades in warmer temps to keep the blast off the upper torso. I get 2 mpg more than not using it.  80+F temps better mpg due to air being less dense easier to move through.  using the OEM during 50F and below I always had 4 mpg loss, with the Rifle I only see 2 mpg loss. that has been my experience mostly mainly based on commuting to work same route everyday, same traffic.

I am an aerodynamically challenged old guy. Got a ring to it!
Mike Luken 


Cherokee, Ia.
Former Iowa Patriot Guard Ride Captain

cookiedough

I would think as well tops 1-2 less mpg, if that even,  with a windshield is all since without a windshield my body being wider than some bucks a lot of wind holding me back some.  I use to have a few months NO windshield on my 98 tourer and when driving it,  my body was horribly pushed backwards due to wind coming at me am sure that my body was darn near the same mpg loss as any type of windshield.  windshields are a near must for me NO bugs splats on my body or helmet is a good thing.. 

even this past summer I hit a blackbird dead center of my windshield doing 60 mph and without that shield,  I would be eating crow probably darn near knocking me off the bike at that speed.