[PART 2] Official BLF GT Group Buy thread. Closed, but Public sales open!

[mmalive]

@JasonWW

@blinker

@JasonWW

@blinker

Do you think there is a way to get more throw?

Sure, slice the dome.
Dome on you get about a 45% reduction in throw (2200m to 1200m)
Sliced dome you get about a 27% reduction in throw (2200m to 1600m)
This is based on Texas_Ace’s GT. You lose about 15% lumens by slicing the dome, which isn’t too bad.

Hopefully I remembered all these numbers correctly.

Okay, if a dome (I assume it comes with a dome) reduces it by 45% and no dome reduces it by 27% how do you get 0% reduction?

Let me correct the throw distance I used before. I thought it was 2200m, but it looks like it’s 2000m. So going from xhp35-HI to a hard driven stock 70.2 is a 40% throw reduction. The sliced dome has a 20% throw reduction.

Anyway, a larger diameter emitter is almost always going to decrease throw because it’s hot spot is larger. The xhp35-HI emitter die is about 5.5 square millimeters. The xhp70.2 die (dome on) appears to be about 22 square millimeters due to the roughly 40% magnification effect of the dome. (I think it’s 40% to 50%). Anyway, that’s a huge increase in emitter size.

Slicing the dome off makes the die about 15.7 square millimeters. That’s still 3 times bigger than the xhp35-HI.

On the other hand, a larger emitter can usually be brighter which then gives you back a lot of the throw distance you lost.

With the sliced dome 70.2 emitter doing 6,000 lumen instead of 2,000 lumen, the net result is a small 20% loss in throw.

You could go with a smaller emitter to get more throw than stock, but it’s a pretty small hotspot and was voted down during the GT design phase.

If you want more than 2000m throw along with a bigger and brighter hotspot, the CFT90 is the hot ticket. When pushed really hard, it can give about 2450m throw and 4500 to 5000 lumen (according to Skylumen). So the hotspot is a little bigger, it’s much brighter and the throw is increased. Sounds great! What’s the catch? They cost about $675.

The bottom line is a lot of folks don’t really need to see 2000 meters (1.2 miles). You can make the GT more practical with a 70.2. It doesn’t cost much more and it can still throw a long way, plus you get a much bigger hotspot to better see what your looking at.

BTW, all xhp50, 50.2, xhp70, 70.2 emitters have domes.

So what would be price range of group buy as opposed to original group buy price? Reason is if more cost effective to MOD or buy newer version?

[No-2-Ageing]

@mmalive

@JasonWW

@blinker

@JasonWW

@blinker

Do you think there is a way to get more throw?

Sure, slice the dome.
Dome on you get about a 45% reduction in throw (2200m to 1200m)
Sliced dome you get about a 27% reduction in throw (2200m to 1600m)
This is based on Texas_Ace’s GT. You lose about 15% lumens by slicing the dome, which isn’t too bad.

Hopefully I remembered all these numbers correctly.

Okay, if a dome (I assume it comes with a dome) reduces it by 45% and no dome reduces it by 27% how do you get 0% reduction?

Let me correct the throw distance I used before. I thought it was 2200m, but it looks like it’s 2000m. So going from xhp35-HI to a hard driven stock 70.2 is a 40% throw reduction. The sliced dome has a 20% throw reduction.

Anyway, a larger diameter emitter is almost always going to decrease throw because it’s hot spot is larger. The xhp35-HI emitter die is about 5.5 square millimeters. The xhp70.2 die (dome on) appears to be about 22 square millimeters due to the roughly 40% magnification effect of the dome. (I think it’s 40% to 50%). Anyway, that’s a huge increase in emitter size.

Slicing the dome off makes the die about 15.7 square millimeters. That’s still 3 times bigger than the xhp35-HI.

On the other hand, a larger emitter can usually be brighter which then gives you back a lot of the throw distance you lost.

With the sliced dome 70.2 emitter doing 6,000 lumen instead of 2,000 lumen, the net result is a small 20% loss in throw.

You could go with a smaller emitter to get more throw than stock, but it’s a pretty small hotspot and was voted down during the GT design phase.

If you want more than 2000m throw along with a bigger and brighter hotspot, the CFT90 is the hot ticket. When pushed really hard, it can give about 2450m throw and 4500 to 5000 lumen (according to Skylumen). So the hotspot is a little bigger, it’s much brighter and the throw is increased. Sounds great! What’s the catch? They cost about $675.

The bottom line is a lot of folks don’t really need to see 2000 meters (1.2 miles). You can make the GT more practical with a 70.2. It doesn’t cost much more and it can still throw a long way, plus you get a much bigger hotspot to better see what your looking at.

BTW, all xhp50, 50.2, xhp70, 70.2 emitters have domes.

So what would be price range of group buy as opposed to original group buy price? Reason is if more cost effective to MOD or buy newer version?

N.B. What counts for max throw is for the emitter to have max lumens per mm^2.

[zelee]

finally i can open my blf gt head, and damn that was a tough bastard to open :smiling_imp:
will contact neal for replacement

[JasonWW]

Let me know if you are not on this list and still have an issue.

If your issue has been resolved, let me know and I’ll remove you from the list.

See post #1 for the Issues List.

This might be the new contact email for GT issues.
Marketing.Lumintop@gmail.com

Bags and caps are still handled through Neal.

[JasonWW]

@zelee

finally i can open my blf gt head, and damn that was a tough bastard to open :smiling_imp:
will contact neal for replacement

I added you to my list. Also make sure to contact Lumintop using the email under the list since I think they are now handling these issues.

[zelee]

@JasonWW

@zelee

finally i can open my blf gt head, and damn that was a tough bastard to open :smiling_imp:
will contact neal for replacement

I added you to my list. Also make sure to contact Lumintop using the email under the list since I think they are now handling these issues.

thanks for the info

[JasonWW]

I updated post #1 with some news about contacting Lumintop if you have issues. The email address is still not confirmed.

I also put this new public “Unresolved GT Issues” list on page one and moved some old shipping details to a different post.

Texas_Ace, have you heard any details such as color and bin on the new CW emitter Lumintop is using in the GT?

[Nev]

I ordered 8 x35E’s before I ordered my gt , I havnt got them yet & I didn’t use the contact form because I bought them separate (on neals deals) , I’m using 30Q’s now so I’ll probly just ask for a refund , but I’ll be happy to get the batteries instead of a refund , I’ll see what Neal says.

[Texas_Ace]

@JasonWW

Texas_Ace, have you heard any details such as color and bin on the new CW emitter Lumintop is using in the GT?

I have not heard much besides I think they are the same D4 bin. They sprung the CW option on me and I never tested them or really got any details.

[Yokiamy]

@Tejasandre

I’d be a n for an upgrade kit too.

Me too !

[sunfire]

@Yokiamy

@Tejasandre

I’d be a n for an upgrade kit too.

Me too !

+1 for me too

[JasonWW]

Did Texas_Ace not post a link to his new thread here?

The BLF GT70 "Giggle Monster" is coming! 7,500lumens, 1,500m throw!

Complete lights as well as upgrade kits. Check it out.

[teacher]

@JasonWW

Did Texas_Ace not post a link to his new thread here?

The BLF GT70 “Giggle Monster” is coming! 7,500lumens, 1,500m throw!

Complete lights as well as upgrade kits. Check it out.

If he did, I missed it. Thanks for posting it Jason…… :+1:

[Texas_Ace]

Yep, I was so busy trying to get the thread started and then make sure that the sign up forms were working I didn’t post anything else about it.

[Tejasandre]

Looks like my goody bag is in Chicago.

[Hardusvd70]

My second BLF GT cool white with short tube on its way. Once again thank you so much Neal.

[sp5it]

Neal, where are my replacement parts? Why you keep ignoring me in PM? My BLF GT is still not working!!
Mike

[Mainstream]

I received all of my accessories today, remove me from the issue list, consider my order completed. Thanks team.

[JasonWW]

@sp5it

Neal, where are my replacement parts? Why you keep ignoring me in PM? My BLF GT is still not working!!
Mike

Neal is no longer handling the GT related issues. This is falling on to Lumintop now.

I’ve got 3 people listed as receiving damaged heads. Plus 8 others who need either complete lights or parts.

At the moment, this is the only email I have to Lumintop.
Marketing.Lumintop@gmail.com

Make sure to send them an email explaining your situation along with whatever info you have such as order numbers, etc… I’m hoping they will get these last issues sorted quickly.

[Texas_Ace]

I talked to Neal and he said that all of the Bag and Cap issues should be dealt with now and that there is not much he can do about the GT’s at this point.