Adjusting Headlight on a slope
HDF Community Team
Joined: Nov 2012
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From: USA
And when you get it perfectly aligned as per oem specs, go realign it so it points where you actually need it. Which involves nothing more than riding at night while carrying a screwdriver to adjust it when you pull over. Do it a few times until you get the best compromise between high and low illumination.
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From: Wisconsin
And when you get it perfectly aligned as per oem specs, go realign it so it points where you actually need it. Which involves nothing more than riding at night while carrying a screwdriver to adjust it when you pull over. Do it a few times until you get the best compromise between high and low illumination.
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From:
YOU NEED TO TAKE INTO ACCOUNT THE REFRACTION OF LIGHT FOR CHANGING THE DISTANCE. HERE IS A SIMPLE FORMULA TO HELP:
Given a normalized light vector l (pointing from the light source toward the surface) and a normalized plane normal vector n, one can work out the normalized reflected and refracted rays:
Note: 
must be positive. Otherwise, use
Given a normalized light vector l (pointing from the light source toward the surface) and a normalized plane normal vector n, one can work out the normalized reflected and refracted rays:
Note: must be positive. Otherwise, use
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From:
There is your answer
Road Captain
Joined: Jun 2011
Posts: 594
Likes: 10
From: Seminole County, FL
Wow who the hell has the time to dream this stuff up?
Put a screwdriver in your pocket and go for a ride, stop and tweak until you can see without blinding oncoming traffic. All that aiming on the wall stuff is ok as long as you do it when there is no lunar tide or eclipse or during the vernal equinox or deer or sea turtle hatching season.
Put a screwdriver in your pocket and go for a ride, stop and tweak until you can see without blinding oncoming traffic. All that aiming on the wall stuff is ok as long as you do it when there is no lunar tide or eclipse or during the vernal equinox or deer or sea turtle hatching season.
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Road Captain
Joined: May 2012
Posts: 528
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From: Bel Air, MD
Wow who the hell has the time to dream this stuff up?
Put a screwdriver in your pocket and go for a ride, stop and tweak until you can see without blinding oncoming traffic. All that aiming on the wall stuff is ok as long as you do it when there is no lunar tide or eclipse or during the vernal equinox or deer or sea turtle hatching season.
Put a screwdriver in your pocket and go for a ride, stop and tweak until you can see without blinding oncoming traffic. All that aiming on the wall stuff is ok as long as you do it when there is no lunar tide or eclipse or during the vernal equinox or deer or sea turtle hatching season.
Seasoned HDF Member
Joined: Jan 2011
Posts: 157,518
Likes: 57,070
From: Michigan 15 Minutes East Of Hell
YOU NEED TO TAKE INTO ACCOUNT THE REFRACTION OF LIGHT FOR CHANGING THE DISTANCE. HERE IS A SIMPLE FORMULA TO HELP:
Given a normalized light vector l (pointing from the light source toward the surface) and a normalized plane normal vector n, one can work out the normalized reflected and refracted rays:
Note: must be positive. Otherwise, use
Given a normalized light vector l (pointing from the light source toward the surface) and a normalized plane normal vector n, one can work out the normalized reflected and refracted rays:
Note: must be positive. Otherwise, use
Road Captain
Joined: Jun 2011
Posts: 594
Likes: 10
From: Seminole County, FL
[QUOTE=2ropes;11268167]I can't see at night to tell if they are right or not so figured if I have them per OEM they should not be bothering the other drivers out there. I use the rumble strips on the edge of the road to keep me on the road
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Seasoned HDF Member
Joined: Aug 2011
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From: Idaho Panhandle
Works on the flat, as long as the slope is flat it should work fine.
1) measure the distance ( A ) from the floor to the center of your headlight.
2) subtract 2" from that measurement ( "B" ).
3) Place a piece of tape "B" inches from the floor on a vertical wall.
4) Measure back away from the taped wall 17 FEET. Place your bike with its headlight at the 17 foot mark pointing at the tape on the wall.
5) Turn on your headlight - the top of the beam should be at the tape mark on the wall. If too high or low, there should be beam adjust screws on the headlight housing.
1) measure the distance ( A ) from the floor to the center of your headlight.
2) subtract 2" from that measurement ( "B" ).
3) Place a piece of tape "B" inches from the floor on a vertical wall.
4) Measure back away from the taped wall 17 FEET. Place your bike with its headlight at the 17 foot mark pointing at the tape on the wall.
5) Turn on your headlight - the top of the beam should be at the tape mark on the wall. If too high or low, there should be beam adjust screws on the headlight housing.
