CANCELLED -- Group Buy for Trustfire TR-S700

Unfortunately I just ordered one from FT and it supposedly shipped today. Bad timing but only $8.60 over the GB price but w/o the XM-L2 upgrade. If we can get it with the warmer XM-L2s I might jump in though.

JohnnyMac;

I thought that you promised a full review of this light years ago. I still cannot find it! :wink:

Hi Rich,

Did you order it with some type of shipping upgrade? If not, using the forums coupon code, you should have only paid about $3.00 more than what’s shown in the OP. I was just wondering, thats all.

Actually as I recall I did use the coupon code so you are probably right about the actual price. No shipping upgrade but the shipment was delayed a couple of weeks as FTs stock status was incorrect and they did not actually have it in stock, thus the memory fade on the price.

Great, sounds like you got an excellent price on what’s suppose to be an excellent and beefy light. It can’t be cheap for any retailer to ship one of these in the case. It also looks to be the ultimate tail-stander with that excellent flat base too.

Doesn’t look like there will be any more takers for this light. I know this forum has had way to many GB’s lately and wallets need a rest.

I decided to make the purchase directly with Trustfire this morning. To get it custom assembled with the XM-L2 5000k color temp and real Trustfire protected 5000mAh cells that I don’t have to worry about being fake, makes it a great deal for me.

I’ll be sure to post about it and try to put together a decent review for you all. Thanks.

Here are some pictures of the TR-S700 from one of the vendors that might make this GB happen.

Very nice. Those XM-L2’s look great.

Afraid that spotlight style handled lights are a specialty format that only appeals to a limited number of people even though to me they are the logical format for larger lights. To me accessory spotlight style handles should be available for every light with a battery tube/handle that is 2”/50mm in diameter or larger like all four physically parallel battery lights including those that use a four 18650 battery holder like the Fenix TK75 and TK76. If this was a more popular light format then there would be more clamp-on handle accessories like the one that Nitecore recently introduced for their TM lights.

The TR-S700 is a limited appeal light for most people due to the sheer size and weight. It almost has to have a handle due to the diameter of the three 26650 in parallel battery tube. If this was a massive throw distance light offer you would probably be beating takers off with a baseball bat though to me a light with more flood is a more practical light for most uses. Also the fact that it is continuously variable output makes it very appealing to me. IMO it would be even better if the output was controlled by a magnetic ring so that it was easier to get an exact output level.

I’m in for this group buy.

interesting light. Now if it had seven MT-G2s…

Gearbest took awhile to ship out my only purchase with them. They only shipped it out after I complained on here. I’ll give them another chance though.

Put me down too for this GB thanks leaftye

Per a USPS tracking email received this morning mine just cleared Customs in LA and entered the USPS system last night so I should see it by Friday unless they send it on a wild goose chase which has happened before.

Me no moneys... I've oogled and drooled over this light since i read a certain review about it long ago. Or I'd be on that list!

id be all over this light excepth that after reading that johnny only got 3600 otf after mods.
if 6000 lumens was doable, id be on this list .
other than the cool switch, why would i carry something this big when i can just carry one of my smaller coke can lights that has equal or even more output.

IIRC Johnny also reported that the light had good enough heat control/dissipation so that it could be left on maximum pretty much full time if required. That is something I would NOT like to try with a ghetto blaster SRK or Supfire M6. I have a 6 LED SRK clone modified by RMM which tests as 5000 Lumens at turn-on, a Supfire M6 that does 4600 and a seven LED Supfire L1 that does 7000 Lumens at turn-on. All Ultra bright RMM lights but once the turbo timer kicks in they drop to <2000 Lumens.

For high output that is sustainable you need both mass and good heat paths from the LEDs and per my understanding this light has both.

@ rich: True about the power. I have cooked off a 7 emitter king clone once running it on high with no step down. All 7 leds slid off their pads and some of them died and went to heaven. Funny thing is I did not notice it to begin with though. But when I did and turned around I was just in time to see the last 3 go out :-)

EDIT: And make no mistake about the quality difference between this light and a king knock off. These genuine trustfires are a quality that is wayy up there compared to what people generally consider xxxxfire quality. Leagues above.

Hi there Ray,

I have to agree with RichWouldnt’s comments. True this Trustfire S700 is a large heavy light, but the proper heat sinking is one of the reasons I was sold on it, not to mention Trustfire custom building it the way I want. I also use my lights to tail stand, which this one would be great, but I sure wouldn’t use it to go for walks due to the size and weight.

Recently I purchased the high power SuperNight 12x (Lightcastle) flashlight. Simply using it for beam shots to post to the forum, the Fujitsu heat sink paste under the star already began to melt or loose adhesion, allowing it to slide around with the reflector removed. I guess that’s what 10.45 amps at the tail cap can do when heat dissipation isn’t great.

Richie086;

Isn’t that 10.45 amps at a nominal 12 volts or more or what was the voltage drop you saw? That would still be in the region of 100 to 120 watts of heat to get rid of from a relatively light weight light. No wonder things heated up in a hurry. IIRC I have also been reading of the springs heating up and discoloring on those lights. Sounds like they are NOT going to be examples of reliable flashlights except maybe in the middle of a Siberian blizzard in January which MIGHT give adequate cooling.

Hey Rich, I didn’t monitor the voltage, but the cells were fully charged to 4.20 volts. I used the new KeepPower IMR26650 5200mAh versions due to the protected 5200mAh Keeppower’s were much to long to fit properly. But I did get a tail current with the protected versions of 9 amps. But the IMR’s fit perfectly, so that’s what I’ll be using in it once I remove the star from the light and go with some Artic Silver or something.

I used the standard formula and came up with the following, 10.45a*3.8v*3=119 watts. Basically the same as what you came up with.

Sounds to me like some of the Chinese budget light sellers are really starting to push the envelope on output and need to start paying more attention to the basics as far as LED heat dissipation is concerned. Use copper LED mounts, smooth heavy integral mounting tables and have plenty of metal cross sections in the path from the LEDs to the rest of the head. Otherwise they are going to have lots of failures which will not help sales once the web starts reporting them.

For years we complained of underdriven LED lights from China and now we are starting to see the exact opposite in some cases it seems. Underdriven allowed for reasonable reliability even without the best engineering but at high output levels things need to be right or failures WILL HAPPEN. That includes the possibility of battery cook offs and explosions if people leave them in tailstanding turbo mode. Not good!