Re: My foray into the biking world - Royal Enfield Thunderbird 500. EDIT: Charger DIY too First, I must state I don't own a Thunderbird nor do I have access to one here in the United States.
That said, I have never heard of a motorcycle headlight that could not be adjusted to point higher or lower.
There must be some way of loosening the fasteners that hold the headlight shell to the front fork and if this is done, the headlight should be capable of being adjusted so that the beam of light points higher or lower.
Obviously, the headlight in the photos above is pointed down which greatly limits the distance the beam will illuminate.
Often the fasteners that hold a shell type headlight in its up and down position are on the outside of both sides of the shell where they can be loosened or tightened easily.
Headlights of this design only need the fasteners loosened a bit, the engine started with the light on and then the headlight moved to point higher or lower as needed.
Once done, retightening the nuts finishes the job.
On some motorcycles, the headlight must be removed to allow access to the nuts on each side inside the shell.
Lights of this design are more difficult to adjust because without the light bulb being installed it is difficult to know where it is actually pointing.
To adjust this type of light with the internal fasteners one must remove the bulb, loosen the two nuts just enough to allow the headlight shell to move upward or downward when a small amount of pressure is applied to it.
Then, the bulb must be reinstalled.
With the light installed, start the engine and move the headlight up/down to point it in the right place.
Once this is done, shut the engine off, remove the bulb and without moving the headlight shell, retighten the nuts.
Reinstall the headlight and it's done.
As for where the headlight should be pointing, IMO on Low beam the center of the beam of light should hit the road about 30 to 35 meters ahead of the motorcycle when the rider is sitting on the seat. In this position, the high beam will shine considerably further down the road and there is a chance of blinding oncoming traffic if it is used at night.
Dipping the headlight to low beam when a vehicle is approaching has benefits for both the driver of the oncoming vehicle and for you.
With your light on low beam, he can see where he is going and he is unlikely to hit you head on.
For those of you who own a Royal Enfield with the traditional, non adjustable Casquette, things are more difficult.
Because of the U.S. Department of Transportation (DOT) my RE came with a 5 3/4 inch adjustable sealed beam headlight (along with a headlight rim to match it and allow adjustment). IMO, it looked very bad. Not at all like a traditional older motorcycle should so I changed the headlight to a old fashioned 7 inch Lucas with a removable bulb.
The new replacement headlight pointed down so much, the center of the beam hit the road about 5 meters in front of the motorcycle. Obviously, pretty useless for riding at speeds over 30 kmph.
As the replacement headlight rim held the light and it was essentially non-adjustable some more serious work was needed.
It was obvious the lower area of the light would need to move outward from the casquette or the upper area needed to move inward.
As the upper area already had the headlight rim firmly against the chrome ring on the front of the casquette, nothing could be done there.
The lower area of the headlight rim could move outward (forward) though if the two screw holes were slotted.
With this in mind, I removed all of the steel material between the 2 holes and the rear of the headlight ring. (Put another way, I slotted the rim at the lower 2 holes so it could be moved forward and still allow the two screws to tighthen down on it.)
After slotting the lower two holes I could move the lower area of the rim forward so that the light beam would shine higher.
After getting the beam aimed about as high as I could while maintaining some material on each side of the two lower screws, I installed a small washer on each screw and tightened it down.
It still is not pointed as far ahead of the motorcycle as I would like but at least I can ride safely at speeds of 65-75 kmph at night with the headlight on low beam.
Speeds of 100 kmph are safe with the headlight on high beam.
Last edited by ArizonaJim : 4th January 2016 at 06:10.
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