My RiverRock Lantern Family (*pics inside*) >> Runtime graph added <<

Wutda

Newly Enlightened
Joined
May 22, 2005
Messages
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These RR lanterns come in very handy especially in power outages or when having evening bar-b-ques out in the backyard. Recently, one of my 1st generation 1.5 watt lanterns went dead so I decided to try my hand at replacing the LED with one of the SSC P4 USW0H LEDs. It was my first LED swap and I learned a lot of things such as:
(1) having a GOOD soldering iron is a must
(2) my soldering skills leave much to be desired, but it helps if you have (1) above
(3) After swapping LEDs and putting the lantern back together again, check the (+) and (-) with a meter BEFORE turning on the switch. Otherwise, this makes for a very HOT situation.

I haven't tested it out for runtime yet...I'm just glad it lights up :)

Also, I decided to go to my local Target to check out the new RR K2 lantern. They had a couple in stock so one followed me home. I like the high/low modes and that the lens is partially frosted.

Anyway, I decided to take some pics of the family. Actually, this is just part of the family...I have a couple more 1.5 watt lanterns that I bought on clearance before the K2's came out.

On the original RR lanterns, I have used some Glad press n' seal wrap to act as a diffuser.

Original 1.5 watt on the left, new K2 on the right:
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The following were taken with my camera in manual mode:
img1799eo1.jpg

img1800jh6.jpg

img1801ro7.jpg

img1802ex3.jpg

img1803uf9.jpg


I received my light meter and was able to get some runtime testing on my 3 lanterns above. I don't have a sophisticated test lab so I had to do everything manually i.e. take a Lux reading every 30 minutes for each lantern...phew I can't believe I did that for almost 9 hours. I used AA alkalines from Costco for this test run.

rrlanternruntimescostcoor7.jpg

My observations:
* The graph may be a little misleading when it comes to the K2 since I am measuring lux. Though not registering a lot of lux, it was outputting a lot of light. This may be why a lot of people think it is brighter than the original - it's not necessarily brighter, BUT it is outputting more light.
* Is the K2 a regulated light? I'm not sure what the graph says about its driver.
* The SSC-P4 LED impressed me quite a bit. it consistently was the brightest for the longest time out of the 3 lanterns.
* The SSC-P4 and the 1.5 watt fell off the radar at about the 8-hour mark. They were still generating enough light to navigate a darkened room during a blackout, but not enough to register a lux reading on my meter.
* I don't know if the lanterns would perform better on duracell alkalines or with NIMHs.

Here's the runtime using 2400 mAH Titanium NIMHs. They were fully charged and allowed to settle for a few hours before starting the test.
rrlanternruntimestitanikj9.jpg


I wanted to focus on how the K2 performed in the first couple of hours so I took readings every 15 minutes. I was surprised that the K2 went to 50% brightness within 1 1/2 hours with alkalines. It seems that this is the behavior with NIMHs as well.

Again, these are lux readings and not a measure of total light output.

I like the K2 and may get more as they become more available. I may even transplant a SSC in there. :)

Let me know what you guys think.
 
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Re: My RiverRock Lantern Family (*pics inside*)

thanks for the pics and write-up!
I swapped a cree emitter into the original RR 4AA, and it turned out pretty well. Original worked fine, just wanted mod something that night:) . The angle is different, but works ok. I need to diffuse it like yours with some press-n-seal, and it should be more effective.
cheers
 
Re: My RiverRock Lantern Family (*pics inside*)

Thanks Pumaman. The lantern I installed the SSC in wasn't really dead. As it turns out, the battery contacts were just a little corroded :duh2:. Oh well, good enough reason to buy some emitters a try my luck at a swap.

ETA: by the way, if you use the press n seal wrap, it will leave some residue behind if you decide to take it off later on. I removed it on one of my lanterns after about 1 1/2 years and it left some sticky residue behind.
 
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Re: My RiverRock Lantern Family (*pics inside*)

Hello Wutda,

Thanks for the pic of the original next to the K2 and for the beam shots. I have yet to find any at my local Target. Now I really have to find a K2.

Regards,
Mark
 
Re: My RiverRock Lantern Family (*pics inside*)

Hello Again Wutda,

I just called my local Target and they do not have any River Rock lanterns. The guy I spoke with said that if he had the DPCI number (that is a new acronym for me), he could look it up and see where they are in stock. Do you still have the packaging with the number on it? Thanks in advance.

Regards,
Mark
 
Re: My RiverRock Lantern Family (*pics inside*)

Hi JetskiMark. I'm not familiar with that DPCI number either. Here are the numbers I see...

On the UPC code there are two numbers:
The number just above the UPC is: R-LT8K23AA
The number on the bottom of the UPC is: 5948600104

In looking at my Target receipt, the number next to the RR K2 lantern is 092080744 and the description is simply "LANTERN".

I don't see anything that identifies itself as a DPCI number.

BTW, I got mine from the Irvine Spectrum target so they have to be in SoCal.

Hope that helps.
 
Re: My RiverRock Lantern Family (*pics inside*)

Hello Wutda,

Thank you very much for the numbers. Armed with those, I am going to attempt to find one or more.

Regards,
Mark
 
Re: My RiverRock Lantern Family (*pics inside*)

I just picked up 3 of the original RR lanterns for around 5 bucks each here in Michigan. Just for the heck of it I decided to compare the output of the RR lantern to those little 4aa folding lanterns made by Energizer. Looks to me like the little Energizer puts out more and smoother light! Might want to check these out if your at the local Target. Keep in mind that I have the latest version of these folding lanterns with 3 leds. The package claims 130 hours on low!!!
 
Re: My RiverRock Lantern Family (*pics inside*)

fishx65 said:
I just picked up 3 of the original RR lanterns for around 5 bucks each here in Michigan. Just for the heck of it I decided to compare the output of the RR lantern to those little 4aa folding lanterns made by Energizer. Looks to me like the little Energizer puts out more and smoother light! Might want to check these out if your at the local Target. Keep in mind that I have the latest version of these folding lanterns with 3 leds. The package claims 130 hours on low!!!
The new RR definately puts out more light than the newest Energizer folding lantern, even on the low setting. I do however find the Energizer far easier on the eyes. In testing the RR on a table, I find you get glare while looking down. The glare shielding is only present when at eye level or when the lantern is hung above you. I'm still testing the lanterns in other common applications.
 
Re: My RiverRock Lantern Family (*pics inside*)

Great pictures and information. I found out about the RR latern here on CPF and it has been one of my best purchases.
 
Re: My RiverRock Lantern Family (*pics inside*)

Thanks for your comments guys. I'm definitely not an expert at either modding or taking pictures.

One thing I noticed when looking at the pics of my original RRs w/ the press n seal is that there seems to be one hotspot. In looking at them with my naked eyes, however, there are two distinct spots - one from the reflector and one from the LED itself. I guess that the manual settings I chose for my camera is the cause of this: 1/8 & F5.0. I'm not sure exactly what those mean but since I used those same settings for all the pics in the dark, it should be a good comparison between the different lanterns. I'd be open for suggestions on what manual settings I can use in the future.

I'm fairly happy with my SSC mod. When first comparing the SSC version with the original 1.5 watt LED, it didn't seem to be that much brighter. I thought it was brighter, but it was hard to really tell. In looking at the pics, I can see how the SSC seems to fill more of the globe than the 1.5 watt.
 
Re: My RiverRock Lantern Family (*pics inside*)

Wutda,
Please update us when you get to do runtime tests.
Thanks.
 
Re: My RiverRock Lantern Family (*pics inside*)

Wutda said:
ETA: by the way, if you use the press n seal wrap, it will leave some residue behind if you decide to take it off later on. I removed it on one of my lanterns after about 1 1/2 years and it left some sticky residue behind.

Were you able to remove the residue with rubbing alcohol or some other agent?
 
Re: My RiverRock Lantern Family (*pics inside*)

jng said:
Wutda,
Please update us when you get to do runtime tests.
Thanks.
jng...I have a light meter that should arrive within a couple of days. It's not a professional model or anything like that but I should be able to at least provide some relative numbers on runtime. I'll update this post with that...maybe even graph it :)

Uncle Bob said:
Were you able to remove the residue with rubbing alcohol or some other agent?
Uncle Bob...rubbing alcohol did work but I still had to put a little elbow grease into it. There's still a little residue but if I keep at it, it should come off. I may try nail polish remover also.
 
Re: My RiverRock Lantern Family (*pics inside*)

I am doing some work right now by the light of my Phorm booklight and a River Rock Lantern. What is better than that?

Love your green colored pictures, they look teriffic, so I think I'll visit Target soon an see about a new K2 lantern.

Thanks for the nice post.
 
Re: My RiverRock Lantern Family (*pics inside*)

Hey nice writeup. Thanks for sharing Wutda!

Now I'm going to have to pick me up some of these since I now know the size comparison with the 1st gen and 2nd gen RiverRock LED Lanterns.

Enjoy!
 
Thanks for the runtime graph Wutda. The decline in the new RR K2 concerns me. It looks like it reaches the 50% mark in just 1:15 minutes.
 
Yeah...I was a bit surprised with the K2's performance also.

Just started another test run using 2400 mAH Titanium NIMHs to see if it behaves similarly. I'm just going to test the K2 and my SSC-modified lantern. I also won't be able to monitor it as long as the first test, but I'll update my 1st post with any results.
 
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