Texas_Ace BLF Calibrated Lumen tube / Sphere No math skills needed - Several spheres still available

Ok, I will just compare before and after to see what correction factor it gives me. Are we aiming for 0.68 or 0.70?

Nice .

These new batch of discs should give about .67 +/- .01 or so unless you get one of the last batch of discs that read a little differently (there were about 10 mixed into 100 of the new ones).

Although they do vary a little disc to disc but not enough to really matter.

The ideal aim point is .68 but honestly that is just nit picking at this point. Just tossing the discs into the 13 I had here had them all reading within spec (although I did tweak these to read a bit more precise since I had them on hand and could do that, but not something most of you need to worry about since you do not know if your sphere reads on the high or low side compared to everyone elses.

I would just install them like I said above and enjoy personally. That is what I did in my own sphere.

I sent an address payment.

Great, I found your old payment but could not find the address.

I will get yours shipped tomorrow.

Hi

If i understand this the disc vill do the 068/,70 factor. the lumen is what you see on the meter, Im a wrong ?

Correct, this will correct the readings so that you can once again read the lumens directly on the meter as I planned at the start.

I also want to say thank you to everyone for helping to cover the costs of the fix. I would of paid it out of pocket but my pockets are still talking to me by not having to.

1 user in particular covered the remaining costs after the individual payments, thanks!

I was talking to DB Custom and Robo819 over on this Thrunite TC20 thread about their lumen tubes built by Manxbuggy1. Robo tested his TC20 in his tube and Newlumen tested his TC20 in the TA tube (0.7 correction factor). The result was only about 10% to 15% higher in robo’s tube. Not the 30% or so I was thinking. So that’s good news.

DB was thinking of sending me a light to measure in my tube then send it to Robo so we could get some comparitive results between the 2 tubes. I suggested he send it to you since your tube is a bit more accurate than the production ones we all have. Anyway, I hope he contacts you about it.

Robo819, DB Custom, TomE and Richard at MTN Electronics all use the same Manxbuggy1 calibrated tubes. Robo has a ton of light reviews here as well. So if we find out their tubes read X% higher than the TA tube we can calculate their lumen readings to ours (since I believe ours are more accurate). That would be pretty sweet. :partying_face:

The Manxbuggy1 tubes don’t use any diffusers, though. So their readings might vary a bit more based on a throwy or floody beam pattern. I’m assuming this, it would be nice to see if it’s true.

TA, I also whipped up this picture to show people one of the big design points in your tube to help cancel out the different beam shapes. I think it’s what gives your design the edge over other designs. You can use it in post 1 if you want.


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Very interesting results.

Sure if DB wants to send me a light (possibly an S2+ or other cheap regulated light as well if he is mailing a box anyways for a wider sample) I am up for that. I would love to get some direct comparisons. I could forward them to Robo as well.

The lack of diffusers does mean there is a very high likely hood that the beam pattern will effect the readings. I know I could not get the readings to be consistent with different beam patterns (I used an LED with a bench power supply and different reflectors for testing) no matter how hard I tried until I added the diffusers.

Cool, thanks for that. I have been hesitant to push the benefits of the diffusers too much since I didn’t want to start a “sphere war” with people arguing over different designs.

Many designs work for what we are doing, I have simply found this to be the best in my own experience.

I will indeed add that to the op.

I like USPS… look like we are getting them on Monday… usps do great job and fast.

It also has to do with the size, larger packages tend to take longer. So an envelope is a bit easier to transport then a big hunk of PVC lol.

Also, I noticed in some pictures you posted that your sphere is still at a funny angle.

Were you not able to twist it any more? The PVC likes to get stuck, when this happens I wiggle it back and forth while pulling it out. The top piece has no glue so it should pop out.

Then line it up properly and press it back together firmly.

I got it fixed with the help of my brother… it’s straight… just did it last night…

pic upload

Great, much better and easier to use I am sure.

Got my correction disks today and installed the two disks per directions. Using my modified Convoy from PFlexPRO (sphere tested at 607 lumens), I get a reading much lower than I was expecting.

But here's where things get interesting. I reversed the correction disks in the direction they're not supposed to go (smooth side towards the sensor).

Now when I test the PFlexPro light, I'm only off by ONE LUMEN.

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Again, with correction disks in wrong direction, here's the Nitecore TIP (rated at 150 lumens). And we get . . . 149 lumens. So, seems for my tube, reversed correction disks is what works.

Thanks for the result… pretty accurate… mine is on the way.

I got mine too… I tested the thrunite catapult v6 1700 lumen light and I got 1757 lumen… nice. No more math!!

Very interesting. What were the readings on both lights without the discs at all?

[quote] Very interesting. What were the readings on both lights without the discs at all? [/quote]

Let's see, from page 12 of this thread;

and from page 21 of this thread