No contact, P+18 would not fire..

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Ape

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Jul 17, 2010
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France
Hi guys,

I've bought à P+18 from the french forum.
I did not received any o-ring along.

I've tried with a AW 18650 protected, and it would not fire.
If I shakenthe body, the battery inside is not fixed.

So I've tried making paper o-ring ^^... On top and bottom of the battery chamber.
The battery is almost not moving anymore. But the P+18 would not fire anyway...

I don't know if I have to go to the mall to buy o-rings (as I don't know the metric measures of the o-ring).
Moreover I've made my own o-rings to Test if it was the problem, and its the same...

So I don't know what to do... Any idea ? :-/
 

snork

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Definitely do not place an o-ring (home made or otherwise) at the top of the battery. The battery positive needs to make direct contact with the post of the top cap.

The outside diameter of the o-ring appears to be around 19mm. Wall thickness will vary depending. The supplied thick ones look to be 2.5mm, the thin ones less. Sometimes you use one, two, or mixture of the two depending on your battery.
 

snork

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My advice would be to do what I do: Take your P+ and battery to the store and find things that fit. Washers for the battery post, you'll need from one to four. Dimensions won't matter too much as long as they fit and do the job. The o-rings you'll want to fit nicely. The goal with the o-rings is to make it so when you screw the top cap on, you'll feel a little resistance just before the cap goes all the way on, then you snug it down.
 

snork

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All right so the washers and o-rings are just meant to make the battery not to move ?
Without them I should get a contact anyway ?

Worst case scenario: the rhodium would be damaged ?
No, you need them for more than that!
The washers let you adjust the "throw" of the button, how far you have to press it before it fires. The o-rings press the battery firmly against the top cap, otherwise it won't fire. Plus the o-rings provide insulation against short circuits.
 

pAth77

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No, you need them for more than that!
The washers let you adjust the "throw" of the button, how far you have to press it before it fires. The o-rings press the battery firmly against the top cap, otherwise it won't fire. Plus the o-rings provide insulation against short circuits.

^^^This^^^

David designs all of his mods around AW batteries, but not all batteries are created equal. Although a battery is badged 18650, for example, there will still be some minor variances in their actual size. That is why he includes additional o-rings. Unfortunately for you, the seller you got it from didn't include those for you. I measured out the o-rings that you will need (what is normally included with SuperT mods):

Thick o-ring: 19mm outer diameter, 2mm thick (0.10")
Thin o-ring: 19mm outer diameter, 1.5mm thick (0.07")

The o-rings are placed at the bottom of the battery tube. There is a ledge that they will rest upon. Once you figure out the proper combination of o-rings for the brand of battery you are using, the rattle will go away.

When you add or subtract o-rings it will change the resting height of the battery, which effectively changes the distance that the bottom contact needs to travel in order to make contact with the battery. This is where the washers (brass, nickel plated, or whatever you can find at your local hardware store) come into play. With a higher resting battery height, you will need to add the appropriate number of washers to make contact with the battery. Some prefer a shorter throw (like me), which would require more washers. Others like a longer throw (not me), which would require fewer washers.
 

Ape

Full Member
Jul 17, 2010
36
3
France
Many thx
Yes but she's closed right now, for health issues..

I've tried to use some pieces of my own (o-ring + washer to make contact).
The washer made contact ok: it created a short circuit by connecting the + of the tube and the - of the battery.

So now i've got 2 small burn spots on the outer tube because of the heat. :'(

The one who sold to me finally sent the extra pieces yesterday.
He says he never had to add them, as his AW protected 18650 (Black) fits without it.

I've Also AW protected 18650 but red, and it doesn't fit, that's such an assle..

I'll Also try. 2xCR123 today, see if it fits well..
 

pAth77

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Many thx
Yes but she's closed right now, for health issues..

I've tried to use some pieces of my own (o-ring + washer to make contact).
The washer made contact ok: it created a short circuit by connecting the + of the tube and the - of the battery.

So now i've got 2 small burn spots on the outer tube because of the heat. :'(

The one who sold to me finally sent the extra pieces yesterday.
He says he never had to add them, as his AW protected 18650 (Black) fits without it.

I've Also AW protected 18650 but red, and it doesn't fit, that's such an assle..

I'll Also try. 2xCR123 today, see if it fits well..

I am not aware of AW making a red protected battery. I believe that what you are using is the AW IMR 18650. The black protected 18650 is slightly longer than the red IMR due to the PCB (protection circuit). Since the P+ was set up for the protected battery, it makes sense that your IMR was rattling inside.
 

Riverboat

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Many thx
Yes but she's closed right now, for health issues..

I've tried to use some pieces of my own (o-ring + washer to make contact).
The washer made contact ok: it created a short circuit by connecting the + of the tube and the - of the battery.

So now i've got 2 small burn spots on the outer tube because of the heat. :'(

The one who sold to me finally sent the extra pieces yesterday.
He says he never had to add them, as his AW protected 18650 (Black) fits without it.

I've Also AW protected 18650 but red, and it doesn't fit, that's such an assle..

I'll Also try. 2xCR123 today, see if it fits well..

PrecisePlus Setup:
Note: These are just a starting point, you may find you like an extra washer on the Rhodium
switch post to adiust the throw to your liking or need a different Oring combination for the
battery. There should be resistance felt the last 1/2 turn or so of your top cap as it
compresses the oring down, this is normal. Adiust accordingly to achieve this.
PrecisePlus 18650:
- Aw P1865o 2600mAh: One Thick (.100) #113 Oring in the bottom of the battery chamber
One Washer under the Rhodium Plated screw in Switch Post
-Aw P18650 2900/31OOmAh: One Thin (.070) #16 Onng
One Washer
-Aw IMR 18650: one Thick (.100) #113 Oring and One Thin(.070) # 16 Oring
Three washers
-Aw IMR 18490 w/Kick: One Thick (.100) #113 oring
One Washer
PrecisePlus 18500:
-Aw P18500 1500omAh: One Thick (.100) #113 oring in the battery Chamber
One Washer on the screw in Rhodium Switch Post
-Aw IMR 18490: One Thick (.100) #113 Oring and One thin (.07o) #16 Oring
Three washers
-Aw IMR 18350 w/Kick-: One Think (.070) #16 Orng in battery chamber. One #12 oring around top
cap to fill gap, 1 washer on the switch post.
PrecisePlus 18350:
-Aw IMR 18350: Try one Thin (.07o) #16 first, if they battery is loose, move up and use one thick
(.10o) #113 Oring.
One Washer
PrecisePlus 16340:
Aw IMR 16340 and Aw ICR 123/1634o: One Thick (.100) #112 in the battery chamber.
One washer under the Rhodium switch post.
 

Ape

Full Member
Jul 17, 2010
36
3
France
I've finally found out where I was wrong. :)

The power circuit was ok, the problem was coming from the vivi nova I use.
The center post would'nt connect properly...

I would have found out sooner if I was at home, with my voltmeter nearby... So while the vivi did not fired i thought it came from the circuit of the P+18...

Anyway everything is ok now :)
Yet again, Many thanks folks for you help.

I have but one regret: the 2 little burn spots on the outer tube from the heat of the short circuit I did yesterday...

Do you think it can be cleaned ..?
 
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