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

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Texas_Ace
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I just got done finding, printing shipping labels and packing all the orders I could find. I got 27 out of the 32 total ordered between the people that sent a new payment and those that I could find from the old payments.

If anyone does not get the correction discs just let me know and I will send you out a set.

I also sent 3 discs to most of you, just in case one breaks in shipment, it is easier to include an extra then ship another. Only 2 of them will be used though.

These discs seem to read slightly different then the sheet I get before. This seems to work out to around ~.67, so pretty darn close to prefect in most cases. Although a few of the old discs are mixed in so it is possibly it could vary a little if you get one of the old discs.

Luckily no matter which combo you have it should still be within the tolerance range I was aiming for as I didn’t even notice the difference when putting together the 13 spheres yesterday and they still came out within spec.

The official install instructions for the correction discs are as follows

The discs have a textured side and a smooth side.

Simply remove the lux meter from the PVC pipe and insert 2 of the correction discs Both smooth sides should face towards the INSIDE of the PVC pipe

It is hard to tell in the pictures but both textured sides are facing out, towards the meter.

Then simply reinstall the meter to hold them in place:

I forgot to include the directions for installing the 4” discs with the package. The pictures below should help explain it.

Use some normal tape and run it around the edge of the lux meter and disks to hold them in place. It does not have to be very fancy, just hold them in front of the meter.

Alternatively you can hot glue the discs to the meter but this is not super easy to do.

After the disks are attached to the meter simply insert it into the tube and enjoy!

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For the 4”, will it make a difference how far the diffuser disk is installed from the meter? If I hot glue it, it will be further away from the meter than taping it directly to the meter.

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SKV89 wrote:
For the 4”, will it make a difference how far the diffuser disk is installed from the meter? If I hot glue it, it will be further away from the meter than taping it directly to the meter.

On the 4” spheres I put together yesterday I first taped the discs to the meter, except instead of running the tape around the edge I just put a strip across the discs. This was to hold it in place.

Then I ran a bead of glue around the exposed edge and after it had mostly cooled cut/peeled away any excess that would keep it from being inserted into the PVC.

So the discs ended up the same distance away either way.

That said, the distance the discs are from the meter will have a minor effect on the readings. Getting the glue on more then the edge will have an effect as well, generally lowering the readings some.

I recommend trying it with tape first and making sure it is reading correct. If you have a choice I would pick a setup that gives you slightly high readings figuring that the glue will drop it a little.

SKV89
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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?

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Nice .

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SKV89 wrote:
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?

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.

Bob_McBob
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I sent an address payment.

Texas_Ace
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Bob_McBob wrote:
I sent an address payment.

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

I will get yours shipped tomorrow.

Micael
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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 ?

Micael

Texas_Ace BLF Calibrated Lumen tube

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Micael wrote:
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.

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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!

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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. Party

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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JasonWW wrote:
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. Party

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.

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.

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JasonWW wrote:
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.


.

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.

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

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Newlumen wrote:
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.

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Texas_Ace wrote:
Newlumen wrote:
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..
998_D861_C-0_EAE-4_FDD-_B5_B5-_E08_E90_C22_ACD
pic upload

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Newlumen wrote:
I got it fixed with the help of my brother.. it’s straight.. just did it last night.. 998_D861_C-0_EAE-4_FDD-_B5_B5-_E08_E90_C22_ACD
pic upload

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

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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.

.

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.

 

 

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

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

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Terry Oregon wrote:

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.



.


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.



 


 

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

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

 

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

Quote:

Nitecore TIP 2017 (non CRI version) fully charged built-in battery

spec high = 150

TA Tube = 202

spec turbo = 360

TA Tube = 448

 

and from page 21 of this thread

Quote:
Convoy S2+ (PFlexPRO)

spec 607 @ 30sec

TA Tube: 790

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Just making sure if I am installing it correctly.. is this correct? Rough disc is not touching the sensor. Thanks

CA872_AF9-2743-4_D26-9181-68_D6_FE23_A989

SKV89
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I just received three correction discs. The instruction says to use two. I just want to make sure for the 4”, I should use 2 also right?

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SKV89 wrote:
I just received three correction discs. The instruction says to use two. I just want to make sure for the 4”, I should use 2 also right?

Yes two.. smooth disc is suppose to touch sensor right??

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Good info Terry Oregon, thank you…… Thumbs Up

If things seem off when I get mine, I’ll sure give this a try.

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Terry Oregon wrote:

 

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

 


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


Quote:

Nitecore TIP 2017 (non CRI version) fully charged built-in battery


spec high = 150


TA Tube = 202


spec turbo = 360


TA Tube = 448


 


and from page 21 of this thread


Quote:
Convoy S2+ (PFlexPRO)

spec 607 @ 30sec


TA Tube: 790

Thanks for looking that up. Very strange, it seems to be giving a lower correction factor then it should but it seems to be inline with the numbers I got with the old sheets in that orientation (around .64)

It is unlikely but possible that he managed to get 2 of the first batch of discs that read a little lower. In which case he is correct, flipping them around is what is needed to get the correct readings.

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Newlumen wrote:
Just making sure if I am installing it correctly.. is this correct? Rough disc is not touching the sensor. Thanks

CA872_AF9-2743-4_D26-9181-68_D6_FE23_A989

Yep, that is the correct way to install them physically, although I can’t tell which orientation they are. Both of the smooth sides should face towards the inside of the sphere with the new discs (which I made 100 of). With the old discs they were the other direction but there were only about a dozen of them mixed in, so it is unlikely that most of you have those.

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SKV89 wrote:
I just received three correction discs. The instruction says to use two. I just want to make sure for the 4”, I should use 2 also right?

Yep, I sent 3 to everyone (and 4 to the international people) just in case 1 broke in shipment. Easier and cheaper to send a spare then ship another package. I had the buy the whole sheet of diffuser anyways.

You only need to install 2 of them though.

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