|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
01-18-2019, 07:00 PM | #1 |
Senior Member
Join Date: Jun 2010
Location: Polk City, Iowa
Posts: 526
|
Head light focus with out lens?
I thought if I focused my head lights without the lens to make the smallest and round spot that would be a good way to focus. I did this and with the lens replaced, I think I got a reasonably good patterns as shown in the Ford service bulletins. I am open to advice or critique. Thank you.
__________________
Steve Hanna, Polk City, IA |
01-18-2019, 07:42 PM | #2 |
Senior Member
Join Date: May 2010
Location: Southern California
Posts: 7,044
|
Re: Head light focus with out lens?
When you place a sealed beam bulb behind an original lens it defocuses the beam so there is something going on with the lens. I wouldn't have expected the good result you are reporting.
Charlie Stephens |
Sponsored Links (Register now to hide all advertisements) |
|
01-18-2019, 07:46 PM | #3 |
Senior Member
Join Date: Apr 2013
Location: Northwest CT
Posts: 1,092
|
Re: Head light focus with out lens?
Sounds good to me. Have any pictures?
|
01-18-2019, 08:06 PM | #4 |
Senior Member
Join Date: Jun 2014
Location: Melbourne, Australia
Posts: 7,510
|
Re: Head light focus with out lens?
Makes great sense to me. I once ended up doing things the other way 'round. I focused the light as best I could, then at some later date (for reasons I don't remember) I had the light apart. I checked the focus without the lens and got a well focused beam as you describe. Comforting!
__________________
I'm part of the only ever generation with an analogue childhood and a digital adulthood. |
01-18-2019, 10:57 PM | #5 | |
Senior Member
Join Date: May 2010
Location: Young Harris, GA
Posts: 1,823
|
Re: Head light focus with out lens?
Quote:
This guy is talking about putting a regular bulb in the headlight reflector without a lens and then focusing it. It should work. Remember to focus on the High beam, though. That filament is in the center of the reflector and should focus to a very strong spot beam. Then you add the lens and it should look good, like in the Service Bulletins (but you may need to loosen the nut on the light and aim it to the correct height). .
__________________
Jim Cannon Former MAFCA Technical Director "Have a Model A day!" |
|
01-18-2019, 11:00 PM | #6 |
Senior Member
Join Date: Jun 2010
Location: Polk City, Iowa
Posts: 526
|
Re: Head light focus with out lens?
Sponsored Links (Register now to hide all advertisements)
__________________
Steve Hanna, Polk City, IA |
01-19-2019, 01:19 AM | #7 | |
Senior Member
Join Date: May 2010
Location: Southern California
Posts: 7,044
|
Re: Head light focus with out lens?
Quote:
Charlie Stephens |
|
01-19-2019, 04:02 PM | #8 | |
Senior Member
Join Date: May 2010
Location: Young Harris, GA
Posts: 1,823
|
Re: Head light focus with out lens?
Quote:
At night, on a wall... .
__________________
Jim Cannon Former MAFCA Technical Director "Have a Model A day!" |
|
01-19-2019, 08:12 PM | #9 |
Senior Member
Join Date: Jun 2010
Location: Polk City, Iowa
Posts: 526
|
Re: Head light focus with out lens?
Jim, I'll try to post pix. It's near zero degrees and salted roads. Car on jacks now for winter storage prep. I may try with a card board about 8 ft ahead of the car. if I can figure how to fit it in my garage. When I did. this, I got about a basket ball size round spot of light at about 15 ft.
__________________
Steve Hanna, Polk City, IA |
01-21-2019, 12:48 PM | #10 | |
Senior Member
Join Date: Dec 2017
Location: Guthrie, OK
Posts: 1,150
|
Re: Head light focus with out lens?
Quote:
|
|
01-21-2019, 05:08 PM | #11 |
Senior Member
Join Date: Jun 2010
Location: Polk City, Iowa
Posts: 526
|
Re: Head light focus with out lens?
I agree Badpuppy: I focused while watching the crispness of the light spot. I went too far in one direction and too far in the other direction then balanced in the mid where I had a very nice crisp and very round spot. When I put the lens back on, I had a light pattern like shown in the service bulletins. I am curious why that was not the recommended way too focus. Seems so much easier to me. I do have the new Brattons reflectors which are corrected to original.
__________________
Steve Hanna, Polk City, IA |
|
|
Sponsored Links (Register now to hide all advertisements) |
|