Announcement

Collapse
No announcement yet.

Hiperlights 921 (2800+ lumens) versus JDM Astar "50 watt" 921

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Hiperlights 921 (2800+ lumens) versus JDM Astar "50 watt" 921

    Revised my test significantly:

    Instead of waving a lux meter around, I decided to create a test grid based off points found in FMVSS 108. I tested at: 30 degrees left of vertical, 10 degrees left of vertical, 10 degrees right of vertical, and 26.5 degrees right of vertical, and at 5 and 10 degrees below the horizontal.



    Test distance is 10 feet.

    Before we jump into the numbers, here are the federal photometric requirements for reverse lamps. Quick n' dirty summary: intensity needs to be capped at 300 cd per lamp throughout the beam pattern. This is to keep glare down. You can have either 1 or 2 reverse lamps--both are perfectly fine. Most car manufacturers fit their cars with 2 reverse lamps just because it looks symmetric and therefore "correct," but there are some cars that drop a reverse lamp in favor of a rear fog lamp.



    Here is a summary of my findings:.







    And some wallshots. Exposure locked at 1/50, f/1.5, ISO 640.

    Brand new Sylvania incandescent 921:



    JDM AStar "50 watt":



    HPL:


  • #2
    Wow these posts are awesome.

    I've seen another style on Amazon that has me interested:
    https://www.amazon.com/dp/B071G7QD5T...1HGJWC&psc=1&r ef_=lv_ov_lig_dp_it



    Have you seen or tried this style? I'm tempted to get the 3157 version for my Firebird.
    www.fadingarrow.com

    2001 Black Firebird Formula 5.7L V8 --- 75th Anniversary Package
    Headlights: Sinolyn 3" D2H Projectors with 35 watt HID

    2013 Blue Mustang GT 5.0 V8 Premium
    Headlights: Stock D3S Bi-Xenon

    Comment


    • #3
      Some more pictures:

      HPL power consumptions:



      JDM AStar power consumption:



      Size comparison:



      How much light does the projector on the JDM Astar emit? After covering up the other emitters and taking measurements at about 1.5 feet away, I calculated that the tip of the projector creates about 69 cd worth of intensity. Not a lot, and I would really consider this "wasted" light since the light exiting the projector can't use the backup lamp's reflector. The last generation of Diode Dynamics' brightest 921 reverse bulb also had a mini-projector. The latest generation, however, dumps the projector in favor of more heatsinking and vents.



      Found the JDM Astar on Alibaba!








      Wow these posts are awesome.

      I've seen another style on Amazon that has me interested:
      Thank you! Glad they're helpful.

      I've seen those a lot. They're rebranded by a lot of companies, including Headlight Revolution/GTR Lighting.

      According to HR, those bulbs are good for about 1000 lumens at 17 watts, which is kind of bad. I'm pretty sure, however, that they would outperform the JDM Astar bulbs, almost no question about it. Versus the HPLs? I'm pretty sure the HPLs would have the edge, but I will be getting my hands on them soon!

      Comment


      • #4
        Originally posted by VIP1 View Post
        Wow these posts are awesome.

        I've seen another style on Amazon that has be interested:
        https://www.amazon.com/dp/B071G7QD5T...1HGJWC&psc=1&r ef_=lv_ov_lig_dp_it

        <img>https://images-na.ssl-images-amazon.com/images/I/71HahJmSIRL._AC_SL1500_.jpg</img>

        Have you seen or tried this style? I'm tempted to get the 3157 version for my Firebird.
        I have those 921s, no measurements they're the brightest 921 LEDs I've used so far in reverse lights. At the current exchange rate those HPLs are $51 USD...cheaper than the some of the re-branded versions of the Auxitos, tempting. The brightest 921-based reverse setup I've had was a cheap PNP H3C HID kit, took like 30 seconds to achieve full brightness though LOL

        projector-head are you in the continental US? If you want to pay for shipping both ways I can send you one of my Auxito 921's for testing.
        Originally posted by HK45
        I don't even look to see what Eddie writes anymore. I'm too busy staring at his avatar.

        Comment


        • #5
          Originally posted by Eddie View Post

          I have those 921s, no measurements they're the brightest 921 LEDs I've used so far in reverse lights. At the current exchange rate those HPLs are $51 USD...cheaper than the some of the re-branded versions of the Auxitos, tempting. The brightest 921-based reverse setup I've had was a cheap PNP H3C HID kit, took like 30 seconds to achieve full brightness though LOL

          projector-head are you in the continental US? If you want to pay for shipping both ways I can send you one of my Auxito 921's for testing.
          I just ordered the Auxito 921s off eBay haha, if I saw your post first I would have taken you up on the offer! I'm excited to see what they're about!

          Wow, I had no idea the HPLs were only $51 now. When I bought them a few months ago, I paid about $70 for them. Damn exchange rates!

          Comment


          • #6
            Ahh dammit LOL

            $51 plus shipping so maybe $70 total, which is still cheaper than the rebranded Auxito @ $89.
            Originally posted by HK45
            I don't even look to see what Eddie writes anymore. I'm too busy staring at his avatar.

            Comment


            • #7
              Some more real-world pictures:

              Can't wait for the Auxito 921s to come in...I think it's pretty obvious that the JDM Astar sucks LOL.



              Comment


              • #8
                I don't see labels in those "real world" pictures, but I'm going to guess, HyperLights, Auxito, Off? Is that right? How about including standard incandescent tests and output pics?
                www.fadingarrow.com

                2001 Black Firebird Formula 5.7L V8 --- 75th Anniversary Package
                Headlights: Sinolyn 3" D2H Projectors with 35 watt HID

                2013 Blue Mustang GT 5.0 V8 Premium
                Headlights: Stock D3S Bi-Xenon

                Comment


                • #9
                  Left to right: HPL, JDM Astar, no backup lights at all (car in park). That's why the mirrors moved up in the last picture.

                  I'll definitely try to re-do it later with the stock incandescents.

                  So far I have the bulbs you mentioned above coming in, along with some Lasfit bulbs that have a weird "bulge" supposedly to mimic a 921 filament.

                  Originally posted by Eddie View Post

                  I have those 921s, no measurements they're the brightest 921 LEDs I've used so far in reverse lights. At the current exchange rate those HPLs are $51 USD...cheaper than the some of the re-branded versions of the Auxitos, tempting. The brightest 921-based reverse setup I've had was a cheap PNP H3C HID kit, took like 30 seconds to achieve full brightness though LOL
                  What car did you put the H3Cs in? I've heard of HID backup kits before, but I couldn't find a reliable source. Lo and behold I go on eBay just now and I see that Morimoto has H3C kits for $150. I've heard of people putting it in their Acuras because some of them have pretty big reverse lamps.

                  Comment


                  • #10
                    Originally posted by projector-head View Post
                    What car did you put the H3Cs in? I've heard of HID backup kits before, but I couldn't find a reliable source. Lo and behold I go on eBay just now and I see that Morimoto has H3C kits for $150. I've heard of people putting it in their Acuras because some of them have pretty big reverse lamps.
                    1st-gen Toyota Tundra. I bench-tested the setup on one taillight for like 30 minutes and nothing melted/burned, my job at the time had the same generation Tundra as a delivery truck so if it did suffer any damage I was going to swap it LOL

                    It was a complete pnp kit off ebay, less than $20 shipped, most of them use the shorter h3c style but the longer ones would have fit. I didn't have to enlarge the existing bulb opening, just used a small machine screw to fasten the bulb down then applied some foam tape to seal. I wired a relay (triggered by the OEM reverse +) to power the ballasts. When reverting back to incandescent the bulb socket gasket covered up the hole left by the machine screw.
                    Originally posted by HK45
                    I don't even look to see what Eddie writes anymore. I'm too busy staring at his avatar.

                    Comment


                    • #11
                      There were HID Reverse kits some years ago. I haven't heard talk of them in a while, but I haven't gone looking for them either. The big thing now is drop-in LED.
                      www.fadingarrow.com

                      2001 Black Firebird Formula 5.7L V8 --- 75th Anniversary Package
                      Headlights: Sinolyn 3" D2H Projectors with 35 watt HID

                      2013 Blue Mustang GT 5.0 V8 Premium
                      Headlights: Stock D3S Bi-Xenon

                      Comment


                      • #12
                        Just go HIR and put in a Gy6.35 bulb to replace a 921. At an 860 lumen output, why even consider HID or LED? Besides the fact that buying bulbs is like crack

                        Crashburn80 is a stable genius
                        https://www.tacomaworld.com/threads/...r-leds.474996/
                        2008 FERRARI MX-5 GT 1.7L INLINE FOUR MAKING OVER 150 HORSEPOWER! WOW!

                        Comment


                        • #13
                          I got some Lasfit 921 reverse bulbs today. These might just be the value winners, considering that I got them for less than $12, shipped.

                          They draw 4.62 watts, and that number didn't fall even after being powered on for a minute. This is more than the JDM Astars, which were in the 3 watt range. More power should mean more brightness...unless Lasfit is using some low efficacy chips or if the temperature gets too high.



                          They attempt to mimic a 921 bulb's filament:













                          The filament in both of the brand new, Sylvania 921 incandescent bulbs were significantly distorted.

                          The official specs seem to be okay with that distortion, given that beta can be up to 15 degrees, and the filament can be offset from the center reference point by up to 1mm. So maybe the Lasfits will be the best performing since they seem to be trying to use the original backup lamp's optics. We'll find out after dark!

                          Comment


                          • #14
                            The Lasfit bulbs are very impressive, especially when taking in consideration price. The Lasfit's were only about $12 shipped, or just a few dollars more than some Sylvania incandescent 921s.





                            It's pretty clear just from the pictures that the Lasfit overpowers the JDM Astar. This agrees with the power supply readings: the Lasfit is a ~4.5 watt bulb (initially) while the JDM Astar starts in the 3 watt range.

                            Now, the Lasfit bulbs basically have no heatsink to speak of. It's literally a bare PCB with chips and resistors and all that plainly visible, unlike the JDM Astar. How long the Lasfits will last, I have no idea, but that might be part of why they're so cheap--they're meant to be disposable bulbs. It's worth noting that the crashnburn80 on TacomaWorld has tested a similar bulb to the Lasfit (bunch of LEDs on a bare PCB, no heatsinking) and also found it to be the brightest of the bunch, but noted that it wasn't the longest-lasting of the bunch. It's also worth noting that the Lasfits come with a 1 year warranty, and customer service seems to be pretty good--they emailed me asking if I received the bulbs--so even if they fail within a year, you can get a replacement.



                            I'm expecting the Auxito 921's to do pretty well, given that they've basically taken a Lasfit bulb and added some substantial heatsinking to the bulb. The Lasfit honestly looks like an anorexic Auxito 921. The Auxito's add a substantial amount of thickness between the side-firing LEDs, and a massive heatsink at the tail end.

                            I'm not sure how useful the LEDs on the tip are. I'm interested in testing the VLEDs "high output" 921, which forgoes the tip LEDs for a heatsink.

                            Comment


                            • #15
                              I have the Auxito ones in my Mazda and they're super bright once you get them turned to the correct angle, even with my awful fluted lenses. I bought a second pair to run in my Celica but never got around to doing that, I'm happy with whatever name brand ones I'm running currently that have a good color to them. The Auxito, while very bright, aren't the nicest looking. They kind of have a washed out green hue to them which I'm not a fan of, but they are SUPER bright. Like PNP headlights lol.
                              2000 Celica GTS 'slowest gts evar'
                              1998 Mazda 626 FS-DE/CD4E 'mom-mobile'

                              Comment

                              Working...
                              X