Veleno Quantum modification. Smooth variable change.

Re: Easy Veleno Quantum modification. Smooth variable change.

Nicely done! I'll have to see how mine is built.

Easy Veleno Quantum modification. Smooth variable change.

Great idea.... I've stayed away from QTC lights due to wear and tear issues and what people have said is finicky adjustment, but your solution looks like a great fix. Just make sure that washer doesn't jump the shrink wrap or you risk a dead short. A plastic washer with a metal filled center (couple of drops of solder maybe?) might be ideal in that application.

Re: Easy Veleno Quantum modification. Smooth variable change.

The washer won't move as it's held in place quite firmly by the magnet below it. I used the heat shrink as it was the correct size tube but I guess I could even heat it up so it tightens against the brass ring and curves over the washer slightly which would hold it in place even more. It may even do that itself if I leave it on high for more than a couple of mins....

Re: Easy Veleno Quantum modification. Smooth variable change.

Nice work! :thumbsup:

I'd really like to do this with both my Quantum's. Even though the D2 works very smoothly, removing the rubbing of the QTC sounds like it would make it even better. However, it seems like the earlier, more finicky version would greatly benefit from this mod!

I'm also really diggin' how this technique offers a solid, max high when the washer touches the brass ring as it can ensure full output when you want, without risk of crushing the battery nipple.

Has this mod held up for you without any problems?

It's still working well. I did replace the washer with a small metal disc that i found as the washer on top was only squishing the edges of the qtc due to the hole in the washer but it really didn't make much difference to how it worked. Still smooth as butter ramping up to full and the qtc looks like new as it's never rubbed against.

Describe the stages:


1) With something sharp, making small furrows, on the positive pole of the battery,
serves to better adhere to the pond


2) Put a drop of pond on the positive pole,


3) stagnate at least 1 of your face thickness


4) to support the thickness from the tin, on the positive pole, and heat it with the soldering iron,
put into place, and everything is ok!


Note: Be careful not to overheat the battery, you risk damaging it ..


I used these:
https://www.fasttech.com/products/1145100


They go very well!




Indeed, for those who have the DD version, are fabulous, allow you to pull out the battery, without however, need a pair of pliers,
because in this version the magnet and the QTc are behind the negative ..

Great idea Jay R!
I have the later version Quantum as well with the QTC pill in the head.
I tried something similar with a small magnet.

(left) LED pill with QTC, (right) magnet


I put the magnet(6mm x 1mm) underneath the QTC as seen in pic below.


After some testing, the magnet seems to sit fine on its own without twisting during use.
Now the twisting vs ramping of the light is a lot smoother with very little flickering.

Mainly did this as without the magnet mod the light would not reach full brightness anymore.
I had taken it apart to make sure both retaining rings were on tight.
Light would twist fully closed but the QTC was not compressed enough to reach full brightness.
The extra 1mm thickness from magnet now allows the QTC to be compressed enough to reach full brightness.

Nice job. I'd still recommend a piece of plastic tubing around the outside. Eventually the magnet may work it's way out sidways and short therefore ruining the battery. On the other hand, if the positive of your cell is a bit recessed, the plastic around the cell may be keeping the magnet centered as long as you only twist it 'just' off. I thought about using a magnet myself but didn't have one the correct size.

Jay R said:

Nice job. I'd still recommend a piece of plastic tubing around the outside. Eventually the magnet may work it's way out sidways and short therefore ruining the battery. On the other hand, if the positive of your cell is a bit recessed, the plastic around the cell may be keeping the magnet centered as long as you only twist it 'just' off. I thought about using a magnet myself but didn't have one the correct size.

Click to expand...

You're absolutely right, I had my first short last night as the magnet had worked its way to the edge.
Luckily I caught it quickly before any damage occurred. I tried using a piece of a plastic straw around it but it wasn't the right fit.
Need to find the right size plastic tubing.
Thanks again for the great idea!

BTW, amazon and fastech both have the 6mm x 1mm magnets if you need them.

Get a small pack of misc size heat shrink, pick one that is just about right, cut 3 or 4mm to fit and pop it on.

Jay R said:

Get a small pack of misc size heat shrink, pick one that is just about right, cut 3 or 4mm to fit and pop it on.

Click to expand...

Thanks, I found the inner part of an earphone bud will work as tubing.
Just turn earbud inside out and with scissors or blade slice off the inner part. Then trim to fit.

Here is a pic of the earbud and the Quantum pill with the magnet and the cutout of inner earbud tube around magnet.

I'm awaiting delivery of my first D2 and came across this thread. Have there been any other 'best practice' mods to protect the QTC pill, or should I rely on the information in this thread as the definitive guide to preserving the functionality of the light?

Mine is still working well. Not sure I would go with the magnet idea above over the metal disk I use. I would think the washer sticks to the battery all the time so you would be contantly pulling the magnet out of the sleeve. Perhaps THE dAY can tell us? Anyhow, I have now done 4 of these mods and all work fine.

Jay R said:

Mine is still working well. Not sure I would go with the magnet idea above over the metal disk I use. I would think the washer sticks to the battery all the time so you would be contantly pulling the magnet out of the sleeve. Perhaps THE dAY can tell us? Anyhow, I have now done 4 of these mods and all work fine.

Click to expand...

I've only used the magnet as its all I have that fits. With the rubber I put around it stays put on the head area.
Over time the ramping is not as smooth as it first was.

THE_dAY said:

I've only used the magnet as its all I have that fits. With the rubber I put around it stays put on the head area.
Over time the ramping is not as smooth as it first was.

Click to expand...

Would you attribute the deterioration of the ramping to the magnet, or to fatigue of the QTC pill?

Also, what's the best way to get the head assembly out of the housing to install a washer or whatever?

I'd suggest that the magnet is sticking to the battery and therefore rubbing against the qtc, negating the whole point of this mod ?

I did my 4 mods with everything in situ. Didn't take the head apart at all. Needle nose tweasers are a must though.

Another quick question - do you guys use the supplied D-rings or go with a split ring, and why?

Hammerhead said:

Another quick question - do you guys use the supplied D-rings or go with a split ring, and why?

Click to expand...

I mostly use clips and sometimes ball chains.
Here is an old post of mine on another forum that runs through quite a lot of clips noting what does and doesn't work.
http://edcforums.com/threads/hfs-edc.108230/#post-1561312
HTH's

Heywood Floyd said:

I mostly use clips and sometimes ball chains.
Here is an old post of mine on another forum that runs through quite a lot of clips noting what does and doesn't work.
http://edcforums.com/threads/hfs-edc.108230/#post-1561312
HTH's

Click to expand...

I was thinking more in terms of which would be more secure. I was planning on using either the D-ring or split ring on the D2 side, along with a McGizmo removable clip on the other so I can deploy independent of my keychain.

By the way, what's the deal with ECD forums? I've tried about a half dozen times to create a user ID and it never seems to take. Even sent an inquiry to the owner and got no response. My spam filter is turned off, so that can't be it. Do you know anyone over there, or would it be possible for you to put me in touch with someone there to see what the story is?