Juice pump, moonman style, leak ??

[DocBurN]

Did you guys are having problems with leaks when the tubing goes through the cartridge ? Maybe the hole is a lil too big but it was a tight fit and still leaks a little if im not carefull.

I don't want to glue the tube to the cart..

here is an old prototype to test the cartridge/tubing (powerpack, passthrought, squeeze bottle and duct tape baby!) and a new one im working on.. sugestion for tube leaks ?

 

[Robert]

I got creative with heat shrink. Used mine today for a 40 min drive. Then I pumped too much and flooded the atty again- I need to get into the spring and cut it in half.

 

[DocBurN]

Yeah, I saw this on another thread..

beside that you have flooded the atty, no leakage on the side of the cart?

You sure didn't wasted time on boxing your bottle there my friend.. but its all good in my book.. I need to stop topping off while driving.

 

[Bubo]

I need to stop topping off while driving.

It ranks right up there with texting and driving... to say the lest! (Not that I would ever do that of course....)

 

[smc]

It would be interesting to see this mod using a micro diaphragm pump. One like this or smaller. I know the human embedable pumps are very expensive, but they are smaller then a dime. Not sure if the fluid rate on these would be enough.

 

[TDM]

I was looking at a small kids squirt gun the other day. The trigger assembly would IMO make an awesome pump.

 

[Carlos49]

It would be interesting to see this mod using a micro diaphragm pump. One like this or smaller. I know the human embedable pumps are very expensive, but they are smaller then a dime. Not sure if the fluid rate on these would be enough.

That does look like a nice pump and the flow rate does not have to be very much. I wonder what the cost on that would be. I have checked on numerous pumps, manual and electric, and have not found one that is cheap enough for modding. But I guess if it's not too expensive it would be worth the investment.

 

[Carlos49]

I was looking at a small kids squirt gun the other day. The trigger assembly would IMO make an awesome pump.

These things work great for a while but start to leak very quickly. If you could find an adheasive to bond that seam, before installing, it would be a great little pump and it puts out more than enough flow.

 

[Bubo]

Back to the original question...
I haven't drilled a cart yet, so I don't' know if there is room enough or not - but your leakage problem is from not having a tight fit....

I'm thinking you'd need something like a brass insert - something like this that I pulled off of a 'saddle-valve' parts list... But then you might need compression fittings and such also.. Might have to rebuild the whole cart out of brass maybe? .. Dunno - just a thought!

 

[Ez Duzit]

I got creative with heat shrink. Used mine today for a 40 min drive. Then I pumped too much and flooded the atty again- I need to get into the spring and cut it in half.

Holy crap that looks like a bomb! 8-o

 

[Moobyghost]

looks complicated. lol.

 

[jvapor]

try to take that one on a plane

 

[sugahness]

These things work great for a while but start to leak very quickly. If you could find an adheasive to bond that seam, before installing, it would be a great little pump and it puts out more than enough flow.

Have ya'll ever tried "Mighty Glue"? It sure works great on the things I've used it on. I would think sealing a seam with it, using a toothpick to get the coverage complete, would do the trick well.

Just a thought....

 

[smc]

That does look like a nice pump and the flow rate does not have to be very much. I wonder what the cost on that would be. I have checked on numerous pumps, manual and electric, and have not found one that is cheap enough for modding. But I guess if it's not too expensive it would be worth the investment.

From this site it looks like 19,90 EUR each in a pack of 10.

 

[jvapor]

From this site it looks like 19,90 EUR each in a pack of 10.

You may be on to something here. Although it doesn't seem to say anything about flow rate. I wonder if it is capable of drips? It certainly is small enough though.

 

[smc]

You may be on to something here. Although it doesn't seem to say anything about flow rate. I wonder if it is capable of drips? It certainly is small enough though.

The page for specific models has links to a data sheet. I'll see if I can find the 'nano' pumps again. They are very small. These could possibly be incorporated into a cart.

General info for the mp6

Water:
- max. flow: 5 ml/min (100 Hz)
- linear range: 0 - 3 ml/min @ 0 - 30 Hz
- max. back pressure: 500 mbar (100 Hz)

 

[smc]

Just noticed the mp5 is considerably smaller, and essentially has the same characteristics as the mp6

 

[Bubo]

Ooo - I like those pumps... Do you think that you would need the controller? Or just a power button to hold for a few seconds?

Anyone in Dortmund want to contact them? From their website they should be able to make them with a curved casing to go around a battery pack.....

 

[smc]

It looks like the controller is mostly for testing. I do believe you need some sort of oscillator in order to drive the pump. I am sure someone with electrical engineering experience could build a tiny controller to send the (square|saw) wave to the pump.

 

[jvapor]

Well I shot them an E-mail so I guess I'll see what they say.