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Measurements of juice flow control o-ring groove for a stiffer Juice flow control o-ring
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#1 (permalink)      4/20/2017 2:56:23 PM US Central   quote/reply + tips
ferongr
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Measurements of juice flow control o-ring groove for a stiffer Juice flow control o-ring
If you think the Ammit juice flow control is too loose, that the tank wobbles a bit and if you have slight dampness around the base, it's due to the thin o-ring of the juice flow control. My Ammit came with a completely incorrect oring from the factory (14mm internal diameter, 1mm thickness).

Some measurements: O-ring groove on the base has a diameter of 17.8mm. O-ring seat of the bottom tank section, where the o-ring seals is 19.2mm.

The stock 14mm I.D., 1mm thickness o-ring that came stock is completely wrong. O-rings should be stretched less than 5%, and compression should be less than 30%. With those specs in mind, a 17mm I.D, 1.5mm thickness o-ring is ideal for the Ammit. I've ordered SKU 4380503 together with my third Ammit and will inform you of howa they fit (at least on my first one that I measure it should be fine).

Edited on 4/25/2017 at 10:12 PM. Reason:
#2 (permalink)      4/30/2017 5:52:53 PM US Central   quote/reply + tips
feurkils
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Keep us posted, weepy base = annoying.
#3 (permalink)      4/30/2017 5:54:39 PM US Central   quote/reply + tips
ferongr
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For now I took a second oring from the spares and run it with double orings on the base.
#4 (permalink)      5/2/2017 3:53:04 PM US Central   quote/reply + tips
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Taifix
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@ferongr Can you take some pictures maybe? I´m not quite sure which o-rings you mean, but it´s interesting me to try it out.
#5 (permalink)      5/2/2017 4:23:18 PM US Central   quote/reply + tips
ferongr
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#6 (permalink)      5/4/2017 4:30:47 PM US Central   quote/reply + tips
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Taifix
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@ferongr: Thank you very much! I just got the recommended o-rings today and will try them out. This might solve some troubles for me - kudos to you!
#7 (permalink)      5/4/2017 4:36:09 PM US Central   quote/reply + tips
ferongr
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I got my second Ammit yesterday (but not the replacement orings since they're in a later package) and it still wobbles with the stock oring, so the wobbling is not due to machining tolerances.

Also, the internal 510 stem requires good tightening to seal the positive pin to the insulator, that's another way where a slow leak can happen. Make sure to remove the outer screw since it's thin and can't be tightened too much before it breaks.

Edited on 5/4/2017 at 4:58 PM. Reason:
#8 (permalink)      5/6/2017 6:18:36 PM US Central   quote/reply + tips
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Taifix
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I´ve tried SKU 4380503 now, but 1,5mm don´t fit - can´t close the tank completely.
I also ordered SKU 2066601 and that one fits well (like the original).
BUT SKU SKU 2066601 seams to be made of a bit harder material and looks like it makes tank disassembly for rewick easier.
Need to try it out a bit.

Trying Kendoo at the moment....

Edited on 5/6/2017 at 6:21 PM. Reason:
#9 (permalink)      5/6/2017 6:45:01 PM US Central   quote/reply + tips
ferongr
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You shouldn't be able to completely screw in the tank like with the original oring. The big oring, while it should seal well with the tank unscrewed a bit, will hit the threads of the tank as you're screwing it more. It's a design flaw of the Ammit is seems, there's not enough flat surface on the inside of the bottom tank section for the oring to seal across the entire travel as you screw down.
#10 (permalink)      6/8/2017 12:56:00 PM US Central   quote/reply + tips
ferongr
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Got the 17mm ID x 1.5mm o-rings and they were really a bit too thick. Ordered 17mm x 1mm o-rings from Ebay (FT doesn't have them) and those fit just perfect.
#11 (permalink)      6/8/2017 5:24:55 PM US Central   quote/reply + tips
logidog
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ferongr wrote:

Got the 17mm ID x 1.5mm o-rings and they were really a bit too thick. Ordered 17mm x 1mm o-rings from Ebay (FT doesn't have them) and those fit just perfect.



I found these here at FT and they do have an ID of 17mm:

19*17*1mm (OD*ID*T) SKU 2167600

OTOH I already had these 17*15*1.0mm (OD*ID*W) SKU 2066601 and although they are not the size you mentioned, they do fit much better than the original. Like you said an ID of 17mm would be perfect.

BTW thanks for your useful input.


Edited on 6/8/2017 at 5:28 PM. Reason: