Initial review: Goncz Hi-tech Flashlight

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Hello guys!

I received a part of the promised Goncz order with highly appreciated help of CPF's MrTedBear and I have thus reviewed the M3 comparing it to a Pelican M6 and a SF M3. As my findings are a bit different from those displayed in this thread and as this seems to be a rather sensitive matter right now, I am posting this review from a flashaholic's point of view in this and the other big Goncz thread.
As I do not know anything about the etiquette at BF, I would not be annoyed if the moderators removed my statements as they may not be approprate because they are complete double posted reviews in someone other's thread.

The CPF thread with my review:
http://www.candlepowerforums.com/ub...iew=collapsed&sb=5&o=&fpart=1&vc=1&PHPSESSID=

My review being the first post there:


Impressions about the Goncz M3

1. Construction
fb9f5ad3.jpg


The light feels very solid and reasonably well built, although it lacks the sophistication found in other well known brands. It is a little bit shorter and about the same weight as it’s direct competitor, the SF M3. It is o-ring sealed at all ends with cool red o-rings and comes well-lubed. The batteries fit tight and there is no real rattle in normal use. The lens is some plastic (lexan?) material. It uses a dimpled reflector and a halogen bulb, the whole head assembly seems less sturdy and less sophisticated than other brands and there is some dirt from the manufacturing process found inside the reflector. I personally do not like the rear switch which is a simple metal tube with o-rings gliding in the housing resulting in lubricant leaking at the rear end making your thumb glide quite nicely :D. In addition to that the tiny spring does not look too trustworthy as well. That leads us to …

2. Function

The switch again. Momentary on – works nicely. Constant on – ok, too, albeit a bit stiff to turn. But wait! There’s no lockout position! Due to the above described mechanics of the switch a lockout is impossible, a severe flaw IMHO. Focussing can be done by turning the head right or left, it changes between spot and flood infinitely without unscrewing the bezel, a cool feature, although not too effective (see below). The nastiest problem is heat management though. After a few minutes of constant burn time, the front end gets VERY hot and some smoke begins to rise! I checked the lens and it has deformed under the heat! Not good.

3. Beam

The beam color is very yellow, it is a halogen bulb. I tried judging the output without technical equipment as I do not own such, and I think it should be between the PM6 and the SF M3 HOLA, that means I think it is not as bad as some others may have reported, but certainly not nearly as good as the manufacturer claims it to be. Throw should be roughly the same as the PM6 with a less intense hotspot but more flood.
fb9f5ab2.jpg

PM6 - Goncz M3
fb9f5ab7.jpg

SF M3 - Goncz M3

In general the beam is more of a flood due to the smaller reflector used and is has an uneven hotspot with some artifacts. Forget the focusing feature, it is cool, but the flood setting is useless due to lots of beam artifacts. I prefer the spot setting, which is in fact a flood compared to the other lights.
A very cool effect is the red o-ring at the lens: when activated, it looks like a fire-breathing light with the shiny red o-ring and the yellow beam. This is not important to most of us, but IMO it is worth mentioning because of the beauty of the light coming out.
fb9f5ade.jpg


A note about the presented beamshots: my crappy digicam cannot capture hotspots correctly. The GM3 is inferior to the PM6 hotspot, but is produces more flood in the secondary beam while it is beaten to hell by the SF M3 HOLA in every aspect. Note that all shots are with new batteries, the included Duracells in the GM3, the included Energizers in the PM6 and SF123s in the SF M3. As you can see, distance to target white (but dirty) wall is the same for all contestants.

Overall I would not buy this light again mainly because of the heat issue and the lack of a lockout feature and the lube-leaking switch. This may be a promising design and it certainly has some aspects of its own, but IMHO it is not ready for the market yet.

A note on the manufacturer, Mr. John Goncz: as you are all aware of the recent problems here, I would rather wait for a trusted distributor if you want to buy his products, I waited several months before getting my light with the help of Mr Ted Bear of CPF, and the order wasn’t complete as I didn’t get the ordered (and paid for) spare bulb. But maybe these problems are history now since Mr. Goncz is trying a new beginning right now and I certainly do not want to spoil this …

bernhard

Edited from discussion below:
the difference to the review on BF could be the point that I *do have* a SF M3 to compare it AND that the light ouput of the Goncz M3 is not that bad, it is just yellow. IMHO it should be between the PM6 and the SF M3, meaning it puts out about 120-150lm, but that is only a guess with my eyes, I have no instruments to measure.

light output is not the negative point in my review, the big problems are the melting lens, the missing lockout and the luble-leaking switch.
I do not expect a SF beam-quality from a light that costs a fraction of the price. It is just not wise of John to advertise it as the ultimate winner which it is not.
 
Below are the pics kiessling had in his post I put them in order of appearance :)
construction:
fb9f5ad3.jpg


beam:
fb9f5ab2.jpg

fb9f5ab7.jpg

fb9f5ade.jpg

this seems to be due to copy and paste (image) instead of (img)
Hope this is illuminating :) :)
Tom
 
kiessling, See I knew something was different. If it melted after 3 minutes, we defiantly have different lenses.

Let me ask you as everyone else I talked to couldn't help me with this one let. How long did your first set of batteries last (IE. Run Time)?? Code 3 and myself both are on the first set and I am ready for the energizer bunny to go by. (We keep going and going:D) If you killed your first set, I would be very interested in knowing how long they lasted. Thanks



Off to smoke a cigarette and spot light the neighbors houses :D
 
yes indeed it seems that we have different lenses. very strange. John told me he would send me a new one though ... let's see.

I did not finish my set of batteries as I did not want the lens to melt completely, so no runtimes here right now. will do some later when and if the replacement arrives.

bernhard
 
KISSLING,

Sorry for the lens and to make good we will ship You a complete M-3 light with the adaptor and the bulb, that You can run it on the 3 or 4 batteries.

Please send us the lens, so that We can examine it.

We have also the tail switch with the lock-up system, which is not introduced yet.

Thanks for the pictures and the postings.;)
 
Kiessling, you're not gonna beat that.
The review was very good.
Goncz, that was very nice of you.
Tom
 
John,

it is not necessary to send me a new light, I would only be interested in a new bezel with a borofloat lens (the lens I have is not user-replacable, at least not by a technical dumbass like me).
if you could include a lockout version of your switch and a xenon buld that would be great, too.
with these, the value of your light would dramatically increase in my humble opinion.

so ... if I find those in my mailbox I'll immediately send you back the damaged lens in the bezel so that you might examine it, and change my review according to the new specs of the new components.

:)

bernhard

edit: just to be clear, I do not mean that I do accept your offer, I just wanted to say that it is unnecessary to replace the rest of the light as it is working just fine. what really counts here is the better lens, the lockout switch and a better bulb, and maybe this adapter if it adds some variation to the light. the point is a fair evaluation of your product with the best material you can offer. no need to be too noce either John, this may well ruin your company one day :)
 
Go for the light. All I wanna see is a great review. Great meaning well executed.
Then we'll get a review on 2 lights.
Only 10 pages and so few reviews...sigh
Tom
Anyone working on a passaround with John G ?? :)
 
I'm finally on battery set #2.

The Duracells lasted approximately 45 minutes total.

I'm currently using some SF 123A's, which fit very tight. I'm going to have problems removing them.

My lens appears to be the Borofloat glass, and even though the light has gotten hot during extended runtimes, the lens has not deformed. I also haven't experienced any grease leaching problems. I have removed the automotive type grease used, and substitudes a silicone based grease, with far superior results.

Overall, I like the light very much. I agree with what kiessling has said about the light, other than I myself would purchase the M-2 based on what I have seen on the M-3 so far.

This light isn't a Surefire, and I didn't expect it to be. However, it smokes the Pelican and Streamlight Scorpion in oveall fit and finish, value, and light output. It's major attraction is it's price point, at $65 MSRP. When John gets all the kinks worked out, it should be a great seller.

Again, I'm waiting on a M-2 from John so I can accurately compare it to the other 2X123A lights in my arsenal.
 
As Bernhard never got his issues resoved by J. Goncz he gave his M3 away for free for further reviews - and here we go:

The issues Bernhard described are all there - but there are some more interesting points:

This engineering marvel contains a WA bulb drawing 2.5A and still being yellow - oh my - obviously the High output bulb - there are zillions of WA bulbs which would have fit MUCH better - the one WA replacement I plugged in had a much better, whiter beam - I have really no idea why this badly yellow high draw bulb is in there - maybe it was one of the cheaper WA ones

The quite interesting part is that the WA bulb is put into what looks like an Carley bi-pin to PR-base socket which is specified by Carley to max 1A draw AFAIK - so lemlux can be lucky not to have spent a fortune on those special bulb sockets as he got the same from Carley already and hoped that Goncz had higher amperage parts ....

The body has approx 20mm inner diameter and a plastic tube is used to make it smaller for non-rattling fit of 123´s - between the plastic and the body is another small sheet of aluminum wrapped around the plastic tube on which I cut my fingers already - maybe the millions of engineering dollars went somewhere unnoticed to me ?

The beam besides being yellow as already mentioned is also a bit flawed when compared to the usual high Surefire beam standards. The quick focusing is nice though. The light output is by far not anywhere near the ones I compared it against. The 200lu P91, 120lu P61 and 105lu P90 Surefire LAs all make it pale in comparison. The output claims are quite obviously by far overstated. An interesting point is that the claimed output of what, 800 lumens , is explained as being theoretically calculated and not achieving it will be due to the batteries used

QUOTE Note: The above results (like the 800 lumens for the M3) are computed on the information that was provided by the bulb and battery manufacturer data. Your test and performance may vary due to the batteries that you will use. ENDQUOTE

So I agree with other experienced reviewers that the Goncz M3 does have some potential but serious design flaws making it really not worth any of at least my money. Thanks to Bernhard providing it for free for further review / tinkering / modding.

What I might do with it is based on some of the interesting issues I found today. Removing the plastic tube will allow the use of fat A sized LiIons like the 18650 which have the highest size/capacity ratio and lowest cost of all LiIons as they are widely used in the IT / Notebook world but normally can´t be used in 123-sized bodies as they have a larger 18.5mm diameter. The Carley bi pin / PR base bulb socket does allow the use of a variety of WA or other bi-pin bulbs and I tentatively put in a Energizer DB 4AA/4AAA (which is effectively a 2AA bulb) and run it with two AA Nimhs. At least the plastic lense won´t melt now. As I gave most of my WA bulbs away I have not much choices left to try - but I might remove that WA bi pin socket and it might / should allow the use of PR base (like a xD/xC Mag) bulbs then too.

Most interesting I think might be a mod to either 1W or 5W LS emitters - the metal housing should heat-sink nicely, the quick focusing might come in handy as well - the use of 2 18650s might make a nice power source for a 5W LS and using 2 A/AA sized NiMh and some booster for a 1W would maybe be possible to. I am a little time-constrained and will postpone further fiddling with it. It needs to be seen how Luxeons can be attached and the use of a 30mm optics slightly lathed down might be possible too. Not sure how the reflector would handle LEDs though. For the use of a nice WA bulb a replacement of the plastic lense would be advisable and it looks as this seems to be possible as its using a retainer similar to the latest ARC LS designs.

At the end of the day at least Bernhard got what he payed for, even when the product received doesn´t live up to the wild claims by a large degree. Some of the used concepts are interesting to look into espcially with LEDs (the large enough head for 30mm optics, the quick focusing, the large ID body) and we´ll see what mod might find its way into it.

In stock configuration I´ll take a Surefire (any Surefire) any day over this vastly inferior product, I really have no clue how one can claim 800 lumens output when everything in the 100 to 200 lumens Surefire range just blows it away - maybe I need to compare it against a 2 cell 60 lumens SF too

If John Goncz would be someone able to listen he could even easily make a nice light out of it, just using a better WA bulb and a glass lense would cure the most obvious shortcomings. As it was shipped to Bernhard (and not getting fixed despite promisses from John to do so) it is in my eyes on the level of some cheap junk chinese wanna-bes - if it would be sold as such at the appropiate price level I think nobody would complain - but claiming to be the best of all really is a case for either the madhouse or the comedy club - and possibly for some legal review too.

And as usually these are just my 2 €cents and YMMV

Klaus
 
For those who don't know, WA=Welch Allen.

Klaus, I touch on why I think the beam is yellowish here. It would be cool if you could find some 1/2 D nicads and see if it improves the beam color in the light. Or are they AA's? A's?
 
David,

I also think that Lithiums as you wrote can supply the current - but as I pointed out on your board I think he just calculated the bulb output on the design spec plus some overdrive based on a bench supply output and didn´t took the voltage drop even Lithiums have under such high loads (2.5A in this case) into account - this would certainly explain the yellowish color - and confirm what we expected in regards to his engineering capabilities too.

Klaus
 
When a stupid posting is done I just ignore it especialy by someone whos IQ is equals his age. This evaluation is based upon that the guy can not differentiate the Spring Steel from Aluminum Alloy. (Probably the only way he knows hes underwear from front and back 'the yellow is the front and the brown is the back')

In this instant I do reply as will be informative to others that can appriciate a well engineered supperior products.

The plastic lining serves to minimize the weight. Because the plastic and the Aluminum Alloy are expanding differently at the raised temperature and to maintain it in position, there is a Spring Steel Sheet is serving as a liner and to maintain it in the housing at the event when the batteries are changed to prevent the tubing to fall out. This part is assembled into the product and not to taken appart...

The other postings I will reply at a later date as time permits.

:) :) :) ;)

Until Later
 
This is good. :)
Only bad things on TV now. And I won't have to rent videos.
And I thought this thread was dead
HAH
Tom
 
Keith if he stopped the insults, nobody would read this thread, and he woulldnt be GONCZ :) :) :)
 
Originally posted by Goncz
When a stupid posting is done I just ignore it especialy by someone whos IQ is equals his age. This evaluation is based upon that the guy can not differentiate the Spring Steel from Aluminum Alloy. (Probably the only way he knows hes underwear from front and back 'the yellow is the front and the brown is the back')


ROFLMAO!!! I thought we'd seen the last of these trademark insults from this guy, guess I was wrong :D
Let's see what else he can come up with... :eek: :p
 
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