CLI-526 TopFill

[Tudor]

While waiting for your reply I began testing the cli-521 cartridge. I couldn't believe what happened to the first cartridge, so I tested another. And another. And another...

http://www.youtube.com/watch?v=jQc44AbPEZw

cli-521 flushed with demineralized water and dried using a centrifuge (2min).
Initial weight - 14,4g with clip
Final weight - 21,6g with clip
Ink absorbed in the sponge with both vent and exit port closed - 3,2g
Ink used: Image Specialists - Cyan [244D]

lin I will upload your cli-8 video tomorrow, after I do another test on it.

 

[PeterBJ]

Excuse me for being a bit off topic, but I am very curious about the centrifuge. I also have a cordless drill and would like to try the idea: http://www.nifty-stuff.com/forum/viewtopic.php?pid=58965#p58965

So please Tudor, what is the diameter of the orange drum, and how many rpm is the speed of the drill, and how did you calculate the position of the cartridges? I see that you have compensated for the PGI cartridge being heavier than the CLI cartridges by the choice of the positions of the cartridges.

To calculate the g-force of your centrifuge see this: http://clinfield.com/2012/07/how-to-convert-centrifuge-rpm-to-rcf-or-g-force/

If your drill is rotating at 1000 rpm and the radius of the orange drum is 100mm, then the g-force will be approximately 100g according to the nomogram, meaning that your cartridge weighing 14grams will appear to weigh 1.4 kilograms. Is that green twist wire secure? And how about balance, is the centrifuge hard to hold due to vibrations?

 

[ThrillaMozilla]

Edit: Oops. This post turned out to be wrong.

I couldn't believe what happened to the first cartridge, so I tested another. And another. And another...

You have an air leak at the vent. It's actually hard to seal the vent completely. Air can sneak through some surprisingly small spaces, especially if you give it a few minutes, as you did.

I went through this with Freedom filling. Even a little leak means that it isn't vacuum-tight, and it makes vacuum filling difficult or impossible. If you REALLY seal the vent, the ink will not be able to flow into the sponge chamber.

 

[Tudor]

You have an air leak at the vent. It's actually hard to seal the vent completely. Air can sneak through some surprisingly small spaces, especially if you give it a few minutes, as you did.

Challenge accepted!

I will take the label off of a cartridge, seal the vent with hot glue and try again. Will that be enough?

Just a note: look carefully at the ink in the ink chamber when I finish filling it and before it's plugged. Notice the air bubbles?

 

[ThrillaMozilla]

You have an air leak at the vent. It's actually hard to seal the vent completely. Air can sneak through some surprisingly small spaces, especially if you give it a few minutes, as you did.

Challenge accepted!

I will take the label off of a cartridge, seal the vent with hot glue and try again. Will that be enough?

Just a note: look carefully at the ink in the ink chamber when I finish filling it and before it's plugged. Notice the air bubbles?

Yeah, my face is red. You may be right. I forgot about the grooves between chambers. What is true, I think, is that you have to unseal the vent to get ink out the exit port, but sealing the vent may not prevent exchange between the chambers.

Concerning the present case--exchange between the two chambers--Lin already did the experiment, but your results may vary. It will be interesting to see what happens when you seal the vent.

 

[Tudor]

@Peter

I don't have the equipment to perfectly balance the centrifuge, so there are small vibrations. As the rpm increases, the vibrations decrease in amplitude and increase in frequency. But... there are vibrations. So I don't use the cordless drill anymore, as it can be damaged. I now use a corded drill ( Einhell BT_ID 1000 E - a lot cheaper to replace) rated at 0-3000rpm with no load. I estimate the centrifuge works at about 2500 rpm.

It worked better than expected from the start, so I used it like that a few times. Until a cartridge took off... at 2500 rpm. I had to modify it a little and now works perfectly safe (so far ) .

Tell me if you want higher resolution pictures.








Orange drum inside diameter - 152mm
Orange drum outside diameter - 160mm

The centrifuge is balanced if you use:
a. a full set
b. 2 CLI
c. 2 CLI and a PGI

Oh, you may not see this in the pictures, but the part of the cartridge with the exit port is tilted to the outside. Just 1mm. That helps the liquid exit the cartridge instead of being trapped somewhere on the bottom.

Here's a picture of a cli-8 after being centrifuged. Because these are clips for 521/526, the part with the exit port was too tilted and water got trapped. This doesn't happen with cli-521/526.





Calculated G-force:



Wow! That's a lot of g's!

 

[ThrillaMozilla]

It might be safer and easier to sling it in a sock the way some people do.

 

[Tudor]

It might be safer and easier to sling it in a sock the way some people do.

hahaha
How many g's do you pull?

 

[ThrillaMozilla]

I don't know. I don't centrifuge my cartridges. I just rinse them with a little ink.

 

[Tudor]

Here are some videos that show how the sponge works in a cli-521 and a cli-8.

cli-521 Test - both vent and exit port closed: http://www.youtube.com/watch?v=jQc44AbPEZw
The sponge absorbed 3,2ml of ink.

cli-521 Test All Plugged - vent plugged with hot glue and refill hole with a silicone plug: http://www.youtube.com/watch?v=SPvzQdE3Z68

cli-8 Test All Plugged - with hot glue: http://www.youtube.com/watch?v=yyv9PBaqyhY

But could you be kind enough to help me to do a video similarly with CLI-8 (Because it's transparent) in the same condition/situation as in the above video, with that refill hole sealed with hot glue instead of seal plug. Because I would like to keep that video (where you help me did it with hot glue over the top refill hole) by downloaded your youtube video later. Thank you in advance.

Because of ThrillaMozilla's question about the vent not being well sealed, I removed the label and put the clay directly on the vent hole. That label does not influence the function of the cartridge in any way, it's only role is to hinder the evaporation of ink.
cli-8 Test - http://www.youtube.com/watch?v=I8ot2hKfAvo