Frog eyes HID conversion. - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 05-27-2012, 03:59 PM   #21
Junior Member
iTrader: (4)
 
Join Date: Feb 2008
Location: North NJ
Posts: 271
Total Cats: -1
Default

If he is using projectors then why is the light output so different with no clean line?
1stproject is offline   Reply With Quote
Old 05-27-2012, 06:58 PM   #22
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)
Posts: 26,317
Total Cats: 1,915
Default

Quote:
Originally Posted by 1stproject View Post
If he is using projectors then why is the light output so different with no clean line?
Because not all projectors are created equal.

The cutoff you see in the image I posted is created by a metal shutter placed inside the projector's optical path. In OEM applications, that shutter defines the beam pattern, and moves up and down to switch from lo-beam to hi-beam.

The vast majority of the projector headlights which one sees in the aftermarket have little in the way of internal pattern-control, having been designed for use with halogen rather than Xenon lamps. Commonly, an HID capsule is fitted into them using the base of a halogen lamp such as an H4, along with a moving cylindrical shield intended to emulate the behavior of the aforementioned shutter, with the result being a beam-pattern comparable to that shown in post #13.
Joe Perez is offline   Reply With Quote
Old 05-28-2012, 02:39 AM   #23
Junior Member
 
Join Date: Jan 2010
Location: Renton, WA
Posts: 63
Total Cats: 0
Default

These seem pretty cost effective to me..

I have Hella e-codes with Sylvania Silvers which throw a really nice white light. Only downside I'm told is they burn out quicker and they cost more (no issues after 2 years for me, and I run them in the northwest rain a lot), but it's nice to see the road at night vs the stock headlights.

Here's a tip that's probably obvious, but if you ever drive through rain it's a good idea to take a rag and wipe off the headlights. It's amazing how much dirt they collect.
Joe Mauch is offline   Reply With Quote
Old 05-28-2012, 02:50 AM   #24
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)
Posts: 26,317
Total Cats: 1,915
Default

Quote:
Originally Posted by Joe Mauch View Post
Yeah, a high-quality reflector system is definitely going to be better engineered than a cheap projector system. Not nearly as good an an actual OEM-grade Xenon projector, but definitely a step up.

I've never personally used the DOT-style Bosch housings that FM sells, but I do have the Euro-style Hella H4 reflectors on my car, and they're an excellent unit as well.
Joe Perez is offline   Reply With Quote
Old 05-28-2012, 04:44 PM   #25
Newb
Thread Starter
 
Join Date: Mar 2009
Posts: 15
Total Cats: 0
Default

Here's the update! I flipped it around yet I still haven't adjusted to my liking yet.


Attached Thumbnails
Frog eyes HID conversion.-th_da459a9b.jpg   Frog eyes HID conversion.-th_3129734d.jpg  
benmiata is offline   Reply With Quote
Old 05-29-2012, 12:24 AM   #26
Junior Member
iTrader: (4)
 
Join Date: Feb 2008
Location: North NJ
Posts: 271
Total Cats: -1
Default

Now that looks a lot better..... pretty crisp line
1stproject is offline   Reply With Quote
Old 05-29-2012, 03:14 AM   #27
Newb
Thread Starter
 
Join Date: Mar 2009
Posts: 15
Total Cats: 0
Default

It way better than t he stock lights. Love it when I hit the hill at night.
benmiata is offline   Reply With Quote
Old 05-29-2012, 10:07 AM   #28
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,860
Total Cats: 1,788
Default

I mean the light output is amazing. it's just so god dman ugly, and I couldn't have them stuck up like that.
Braineack is online now   Reply With Quote
Old 05-29-2012, 12:41 PM   #29
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)
Posts: 26,317
Total Cats: 1,915
Default

I think the photos are deceptive.

The shutters are doing a good job of producing a tight cutoff at the top, but the light from the lamp isn't being diffused all that well across the pattern. I see two extremely bright spots near the center, surrounded by a field of perhaps 20% brightness.
Joe Perez is offline   Reply With Quote
Old 05-29-2012, 12:44 PM   #30
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,860
Total Cats: 1,788
Default

actually the second picture suggests you need to swap the lights around, the cutoff is incorrect...but then so is the aiming.
Braineack is online now   Reply With Quote
Old 05-29-2012, 01:06 PM   #31
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)
Posts: 26,317
Total Cats: 1,915
Default

The pattern is definitely reversed, though merely swapping the lights isn't going to fix it. Can't say with certainty not knowing what the inside of the housing looks like, but it appears that the shutter needs to be taken out and flipped left-to-right.

In other words, that notch on the right side of the lo-beam pattern should be on the left side (assuming you live in a country with right-hand traffic) and aligned to block the beam headed out into the oncoming traffic lane.


I really wish that someone would produce a proper HID package that drops right into a Miata, uses high-quality optics, and requires no fiddling around to make it work right.

Of course, it would probably have to be priced such that it would cost nearly as much an an average '90-'93 Miata these days...
Joe Perez is offline   Reply With Quote
Old 05-29-2012, 01:27 PM   #32
Newb
 
Join Date: May 2012
Posts: 3
Total Cats: 0
Default

Just wanted to clear up some uncertainty about the kit.

Quote:
Originally Posted by Braineack View Post
actually the second picture suggests you need to swap the lights around, the cutoff is incorrect...but then so is the aiming.
The 2nd pic is of high beams so it looks like the cutoff is incorrect.

Quote:
Originally Posted by Joe Perez View Post
The pattern is definitely reversed, though merely swapping the lights isn't going to fix it. Can't say with certainty not knowing what the inside of the housing looks like, but it appears that the shutter needs to be taken out and flipped left-to-right.

In other words, that notch on the right side of the lo-beam pattern should be on the left side (assuming you live in a country with right-hand traffic) and aligned to block the beam headed out into the oncoming traffic lane.


I really wish that someone would produce a proper HID package that drops right into a Miata, uses high-quality optics, and requires no fiddling around to make it work right.

Of course, it would probably have to be priced such that it would cost nearly as much an an average '90-'93 Miata these days...
It would be way too expensive to use an OEM pro installed into a manufactured housing. Not enough people would buy it to justify those costs. (Why no one has done it yet).
bens1088 is offline   Reply With Quote
Old 05-29-2012, 01:30 PM   #33
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,860
Total Cats: 1,788
Default

but is the high beam in this lens just more wattage, or is a flapper moving?
Braineack is online now   Reply With Quote
Old 05-29-2012, 01:31 PM   #34
Newb
 
Join Date: May 2012
Posts: 3
Total Cats: 0
Default

Flap. It's an H1 bulb not a dual filament bulb.
bens1088 is offline   Reply With Quote
Old 05-29-2012, 01:46 PM   #35
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)
Posts: 26,317
Total Cats: 1,915
Default

Quote:
Originally Posted by Braineack View Post
but is the high beam in this lens just more wattage, or is a flapper moving?
I can't speak with absolute authority here, but I am fairly certain that no HID system (at least none which I've yet encountered) can vary the power delivered to the lamp.

The selection of lo vs. hi beam on HIDs tends to fall into four categories:

1: A moving flat shutter, placed between the lamp and the lens, which moves up and down. This is the most common style in OEM projector applications.





2: A moving cylindrical shutter, wrapped around the bulb, which moves fore and aft. This is common in aftermarket applications intended to fit into reflector-style housings designed for dual-filament lamps such as H4.





3: An assembly consisting of two elements- one for lo-beam, the other for hi-beam. This is also common in the aftermarket for use in reflector-style housings designed for dual-filament lamps such as H4. The second element is often halogen rather than xenon.





4: Two completely separate assemblies, often a projector for lo-beam and a reflector for hi-beam. This is also common in OEM designs, however its use is declining. The third-gen Integra would be an example of this layout.
Attached Thumbnails
Frog eyes HID conversion.-a3h3p.jpg   Frog eyes HID conversion.-e3tae.jpg   Frog eyes HID conversion.-post-362-0-58233400-1316723111.jpg  
Joe Perez is offline   Reply With Quote
Old 05-29-2012, 01:49 PM   #36
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,860
Total Cats: 1,788
Default

Yeah I wasn't sure if this was a fully legit HID setup is why I asked.
Braineack is online now   Reply With Quote
Old 05-29-2012, 01:49 PM   #37
Newb
 
Join Date: May 2012
Posts: 3
Total Cats: 0
Default

^Great information. I've seen ballasts in which the power could be "turned up or down" but I'm skeptical of its effectiveness and safety.

Quote:
Originally Posted by Braineack View Post
Yeah I wasn't sure if this was a fully legit HID setup is why I asked.
No worries. I've run the kit in my Z for the last 4 years.
bens1088 is offline   Reply With Quote
Old 05-29-2012, 02:22 PM   #38
Elite Member
iTrader: (12)
 
Join Date: Sep 2007
Location: Charlotte, NC
Posts: 6,868
Total Cats: 66
Default

Light spread is "meh" at best. Too many hot spots. I'd be inclined to find a way to aim them through the turn signal holes and ditch the barn doors completely.

I need not even start on the asthetics of the lights and the ghetto-style front license plate mounting....
Doppelgänger is offline   Reply With Quote
Old 06-17-2012, 08:41 PM   #39
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)
Posts: 26,317
Total Cats: 1,915
Default

Attached Thumbnails
Frog eyes HID conversion.-jn1wf.jpg  
Joe Perez is offline   Reply With Quote
Old 06-18-2012, 07:17 AM   #40
Hear me Meow
iTrader: (3)
 
skidude's Avatar
 
Join Date: Apr 2008
Location: Outside Portland Maine
Posts: 1,994
Total Cats: 13
Default

Joe, is that supposed to indicate the color, pattern, or both? "Spectrum" suggests color, but I've seen mis-used words in cartoons before.
skidude is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Another Alternator thread ihiryu General Miata Chat 9 09-28-2015 11:22 AM
WTB 90-97 miata low profile headlight kit DonPlatt WTB 0 09-25-2015 03:57 AM
Auto Engine into Manual Car Wino General Miata Chat 0 09-23-2015 09:35 PM
Miata Backpack: 2000 SE Rustbucket WTB 0 09-15-2015 02:57 AM
Help installing DDM HID kit thumpetto007 General Miata Chat 8 09-04-2015 06:25 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 06:58 PM.