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Thread: Object/Subject Review: Sunwayman T20CS

  1. #61
    Enlightened shahzh's Avatar
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    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    Just a quick one...does the T20CS suppose to memorize the strobe function after you turn off the side switch? Because mine goes to high when I turn it back on...:-(
    ~ Better and Brighter Future ~

  2. #62

    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    Hey, thanks for the heads up about the strobe. I had not noticed that in normal use, but after testing, I found this:

    -When the light is on any brightness, the strobe activates and stays activated just fine.

    -When the light is in standby for high mode, when you turn on the strobe it will strobe for a bout 5 seconds, then go to constant on high.

    -When the light is in standby for medium, it will strobe for about 5 seconds then go to constant medium

    -when the light is in standby for low, it will strobe for about five seconds then go off

    -in each of these, another single press of the side switch will turn the light off, even for the case of standby from low going off after strobing

    -in each of these, another double press on the side switch during the 5 seconds of strobing will activate SOS mode, which will stay on as expected until you turn it off. From SOS mode, another double press will send you back to strobe, and this time it will stay on as expected until you turn it off.

    I don't know if Sunwayman did this on purpose for some reason, but in my opinion this is a poor way to handle the strobe. On the other hand, I've been using the light regularly for a while now and hadn't noticed this. I don't use strobe much, but I guess the few times I have it has been from when the light was already on.

    For the question about the low voltage indicator: no, the red LED won't ever be on except when the main emitter is also on, so you don't have to worry about giving away your position or anything like that.

    For the memory of strobe: no, the UI does not ever memorize strobe mode (or SOS mode), after you turn it off it goes back to whatever mode you were using before. This probably is intentional, as Sunwayman claims the strobe modes to be "hidden". Personally, I prefer it this was, as I don't use strobe modes often and really don't like being surprised by a strobe mode when I'm expecting to turn it on and get constant output.

  3. #63
    Enlightened shahzh's Avatar
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    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    Hmm that's funny.....the rest is the same as above but mine when the light is in standby for medium, double clicking it will strobe for about 5 seconds then go to constant HIGH. I also received an email from SWM that T20CS won't memorize strobe or SOS. Also I did asked SWM if its ok to leave it on standby mode for a long period and this is their reply: 'The standby current of T20CS is about 5oµA, you may leave it for 17 years on standby mode'
    ~ Better and Brighter Future ~

  4. #64
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    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    Quick question back to run-time for a moment... On the chart it shows the light getting dimmer with each passing minute - So is this regulated, not regulated? From an ownership standpoint, on the hi (not turbo) setting, can you run the light for 30 min, or will it get dim? Reason I'm asking is that I'm also looking at the Thrunite Scorpion V2, but really like the SWM's interface, plus its a bit smaller... But the Scorpion seems to have regulated run time - a bit better perhaps? Many thanks!

  5. #65

    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    Quote Originally Posted by RCLumens View Post
    Quick question back to run-time for a moment... On the chart it shows the light getting dimmer with each passing minute - So is this regulated, not regulated? From an ownership standpoint, on the hi (not turbo) setting, can you run the light for 30 min, or will it get dim? Reason I'm asking is that I'm also looking at the Thrunite Scorpion V2, but really like the SWM's interface, plus its a bit smaller... But the Scorpion seems to have regulated run time - a bit better perhaps? Many thanks!
    On high, you're right it does get dimmer bit by bit. However, it doesn't drop very fast, and it's not noticeable as you're using it. Using 2xCR123 or 2xRCR123, you can see that the drop is gradual but pretty flat. On 1x18650, it's pretty weird, going down but then back up, but on average it's fairly constant for about an hour. You should also note that Sunwayman doesn't claim regulation on 1x18650, but only on 2xCR123 or 2xRCR123. So, the T20CS is regulated, but not perfectly. The output remains practically constant, if not exactly so.

  6. #66
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    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    Fair enough, so about an hour of useful bright light. Not bad... and in real terms I'm looking for usage that isn't based on instruments, (however that data is very useful) I'm looking for the normal usage perspective, so thanks so much for sharing that! Cheers -

  7. #67
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    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    Just got mine today, slightly disappointed by a few things
    The white engraving tilted
    Stains on grip ring
    Dinged reflector (critical issue)
    I thought the hotspot would be very tight like Crapfire C8, but it is as large as P60 or A2
    Overall the light is cool, except these problems, couldnt wait until night
    Btw, im quite worried about water leakage at the side switch since T40cs exhibited this problem mentioned in T40CS review

  8. #68
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    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    Another question, is it 20k lux@turbo with CR123a?
    Thanks

  9. #69

    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    I'm sorry to hear about those quality issues on your T20CS, especially a problem with the reflector. Did you get it from a reputable dealer?

    With the water, as I mentioned in the review, I submerged mine for over an hour, clicking both the rear and side switch several times while it was under. I don't have any way to open up the housing of the side switch to look and see if any water got in, but my review sample has suffered no negative effects, so I'm assuming that no water got in.

    With the lux, I assume your asking that because of the output graphs in my review. As I stated there, those graphs are measurements of relative brightness using a home made light box. What that means is, I have a photocell inside of a box lined with white paper. I shine the flashlight in through a hole in the top, and it's arranged so that none of the beam falls directly on the photocell, but rather light is reflected around in the box until it lands on the cell. This isn't a perfect measure of overall output (for that I'd need a very expensive integrating sphere), but rather gives a good general idea of how the output behaves over time. So, this is not a "lux at 1 meter" measurement of the hotspot, or anything like that. I currently don't have the setup necessary to do that kind of measurement, though hopefully I will in the future. I kept the value I measure on the graph, instead of converting it to percent output, because it is useful for making general comparison of one light to another, but only for other measurements using my specific light box (that's why I labeled it "MacBox Lux, because that's the only value it can be compared to).

    Let me know if that doesn't make senese or doesn't answer your question .

  10. #70
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    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    Thanks for the reply
    Ive got it from individual-dealer from local forum, previous V20c didnt have such issue, but i think this might not be the major reason
    If SWM has a good QC, then this light shouldve never reach the world
    2 dings and some dusts will not affect my normal use since ive got used to well-damaged reflector, by de-dusting with tissue and scratched it like hell
    Lotta threads in reflector of my abused light, and im pretty sure that i rather to leave the reflector there than opening it and de-dusting by myself, it only worsen the situation

  11. #71
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    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    Quote Originally Posted by Bigmac_79 View Post
    Hey, thanks for the heads up about the strobe. I had not noticed that in normal use, but after testing, I found this:

    -When the light is on any brightness, the strobe activates and stays activated just fine.

    -When the light is in standby for high mode, when you turn on the strobe it will strobe for a bout 5 seconds, then go to constant on high.

    -When the light is in standby for medium, it will strobe for about 5 seconds then go to constant medium

    -when the light is in standby for low, it will strobe for about five seconds then go off

    -in each of these, another single press of the side switch will turn the light off, even for the case of standby from low going off after strobing

    -in each of these, another double press on the side switch during the 5 seconds of strobing will activate SOS mode, which will stay on as expected until you turn it off. From SOS mode, another double press will send you back to strobe, and this time it will stay on as expected until you turn it off.
    My version
    standby-low, double click for 5 sec strobe
    Hold button, short strobe then constant high

    Strobing, hold button, return to high then cycles
    Last edited by jh333233; 02-05-2012 at 07:34 AM.

  12. #72

    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    Quote Originally Posted by jh333233 View Post
    Thanks for the reply
    Ive got it from individual-dealer from local forum, previous V20c didnt have such issue, but i think this might not be the major reason
    If SWM has a good QC, then this light shouldve never reach the world
    2 dings and some dusts will not affect my normal use since ive got used to well-damaged reflector, by de-dusting with tissue and scratched it like hell
    Lotta threads in reflector of my abused light, and im pretty sure that i rather to leave the reflector there than opening it and de-dusting by myself, it only worsen the situation
    I understand not wanting to open it up to try to clean it. Does the ding in the reflector cause the beam to look misshapen? It might be worth discussing with whoever you got it from, or if they won't do anything, sending a message to Sunwayman. They seem to be good at going the extra mile to deal with customer service issues.

  13. #73
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    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    Mostly, the beam is unaffected, or maybe an indistinguishable-few lumen loss, 658 with 5lm loss is acceptable and i couldnt even notice it
    It was just an eyesore that a new light with dusty,2-dinged reflector, might not be so necessary to find SWM(i have 0 CS expectation to chinese manufacturer)
    If i could get a can of de-dusting gas, i might try to do so, cause my mouth couldnt blow strong enough current

  14. #74
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    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    And last word:
    Turbo doesnt comes on with single-cell for latest version of this light

  15. #75

    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    Quote Originally Posted by jh333233 View Post
    And last word:
    Turbo doesnt comes on with single-cell for latest version of this light
    I thought that at first as well, however, what I found out is that it is very hard for my eyes to distinguish between "turbo" and "high". I didn't figure it out until I had it hooked up to my light box. In order for my eyes to see the difference, I have to turn it on from the tail cap (so it's in turbo), then hold down on the side switch for two seconds so it goes directly into high without going off first. If I turned it off from turbo then back on into high, I couldn't notice any brightness difference, I could only notice a decrease in brightness when I went straight from turbo to high.

    Also, as you can see from the output graphs I did, when using an 18650, turbo mode will only be brighter than high for about the first hour. After that, the cell's voltage is too low, and high and turbo are the same output. So, you'll only be able to use turbo with an 18650 when your cell is relatively freshly charged.

    Hope this helps!

  16. #76

    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    Quote Originally Posted by jh333233 View Post
    Thanks for the reply
    Ive got it from individual-dealer from local forum, previous V20c didnt have such issue, but i think this might not be the major reason
    If SWM has a good QC, then this light shouldve never reach the world
    2 dings and some dusts will not affect my normal use since ive got used to well-damaged reflector, by de-dusting with tissue and scratched it like hell
    Lotta threads in reflector of my abused light, and im pretty sure that i rather to leave the reflector there than opening it and de-dusting by myself, it only worsen the situation
    JH, would you regard this as a reputable dealer?
    I know that in Vietnam, there are many retail outlets that specialise in selling "factory seconds".
    However, they are not labelled as factory seconds at all.
    They are sold as supposedly brand new, and genuine, in top condition, but for a reduced price.
    Westerners who holiday in Vietnam often get sucked into buying factory seconds as brand new, because they don't purchase from a reputable dealer.
    A few years ago, I remember a website in Australia, deliberately selling factory second Sony Vaio laptops, however they intentionally told us up front, that they were "factory seconds".

    I know that Flavio @ bogusa was offering me dinged RRT-3 for a big discount, but he deliberately told me up-front that they were not in top condition.
    I suspect your T20CS is a "factory second", sold for a discounted price???
    I have three Sunway V10R's, and they are superbly built; even Selfbuilt says so in his reviews of Sunwaymans...

  17. #77
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    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    My first SWM, V20C shown fine even with 20% off (or gaining trust)
    Anyway ive coped with the situation anyway, at least it is very satisfactory in terms of beam

  18. #78

    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    Oh, it was your T20CS that was a total dud?
    Are you sure that T20CS wasn't a factory second???

  19. #79
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    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    I assume it doesnt suppose to be

  20. #80

    Default Re: Object/Subject Review: Sunwayman T20CS (In Progress)

    I added some more beam shots to the OP, along with a few long term impressions.

  21. #81

    Default Re: Object/Subject Review: Sunwayman T20CS

    Hi, i am a novice SWM T20CS user. Had been running the light with 2x 16340 and enjoying Turbo, High, Mid and Low during my regular outing. Recently tried out 1x 16850 but only able to have all setting minus the Turbo.*

    My understanding is that depressing the tail button will give out turbo and follow by press hold the front switch for alternate choices. Shining at the wall with 2x 16340, I am able to visual judge a total of 4 brightness when the turbo drop to high and accordingly. But with 16850, there is only three brightness output. When I pressed the tail switch to on, seem to me it will go high, mid to low...

    Is there anything i'm missing? Dear all, any enlightenment greatly appreciated!

  22. #82

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    My experience has been that when using an 18650, it is pretty hard to tell the difference between Turbo and High, and when the battery starts to get used up, there is no difference. I didn't think there was a turbo mode until I used my light box to make real measurements.

    After measuring that the Turbo mode really is a higher output that High, I found that with a fresh 18650, I could see a visible drop in output when I switched from Turbo to High without turning the light off in between.

    Because it's better regulated with 2x16340, I can always see a difference between Turbo and High using those batteries.
    Sent from my mobile device. Please excuse brevity and typos.

  23. #83

    Default Re: Object/Subject Review: Sunwayman T20CS

    Thanks a million for the very fast feedback, chief! It is especially assuring to have a Pro feedback!

    In that case, with Turbo as my main preference. Between 1x 18650 and 2x 16340, may I ask which is of a better alternative?

  24. #84
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    Default Re: Object/Subject Review: Sunwayman T20CS

    If the difference between turbo and high matters to you, use two batteries.
    If you want runtime, go with the 18650 as it has a much higher capacity.
    happens

  25. #85

    Default Re: Object/Subject Review: Sunwayman T20CS

    Sweet!

  26. #86

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    I would really recommend 18650 either way. By the time the Turbo on an 18650 drops to match High, the 2x16340 will be pretty much dead.

    Check the runtime graphs in the review to see what I mean. Imho, 2x16340 has very few advantages in this light.

    Sent from my mobile device. Please excuse brevity and typos.

  27. #87
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    Default Re: Object/Subject Review: Sunwayman T20CS

    I've played around with the 2x16340's and I agree with Bigmac 79 on using the 18650. The T20CS puts out plenty of light on high for me with a 18650 and I don't have to worry about the battery craping out. If I need more throw I'll fire up the TK35.

  28. #88
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    Default Re: Object/Subject Review: Sunwayman T20CS

    Thx for the great review Bigmac79, I came across this by accident as I was looking for another Sunway review on the c20c. I wound up ordering both the T20cs and c20c as a compact thrower companion to my SF fury and V60C, The T20cs reminds me of a SF U2(I miss mine). I was going to get the SF Lawman to take on a trip with me but it isn't a thrower and batteryjunction(and others) were out of stock on the R1. guess I missed this coming out from Sunwayman, from your beamshots it should work great for me as i trying to travel light as possible and carry lights that can use all 18650s or CR123 batteries so I only have to carry one charger

  29. #89

    Default Re: Object/Subject Review: Sunwayman T20CS

    Quote Originally Posted by Vinniec5 View Post
    Thx for the great review Bigmac79, I came across this by accident as I was looking for another Sunway review on the c20c. I wound up ordering both the T20cs and c20c as a compact thrower companion to my SF fury and V60C, The T20cs reminds me of a SF U2(I miss mine). I was going to get the SF Lawman to take on a trip with me but it isn't a thrower and batteryjunction(and others) were out of stock on the R1. guess I missed this coming out from Sunwayman, from your beamshots it should work great for me as i trying to travel light as possible and carry lights that can use all 18650s or CR123 batteries so I only have to carry one charger
    Glad you appreciated the review! I actually have one in progress on the C20C as well, but it looks like you'll get to compare them for yourself The T20CS is one of my favorite compact throwers. I'v also been pretty impressed on the throw with the C20C, the head is barely larger than the head of a V11/V10, but it's got a surprisingly good spot.

  30. #90
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    Default Re: Object/Subject Review: Sunwayman T20CS

    both should be here tomorrow, looking forward to testing them out

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