Russian 91 wobbly posts

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merddyn2002

Full Member
Verified Member
Jan 6, 2014
37
16
Pearland, Tx
So i've got this Russian 91. nice tank.. even though the screws on the deck are a little small for me to build on.

The problem is one of the posts, the one that attaches to the 510 center pin, swings wildly. I can make it stop swinging if i tighten up the center pin by screwing it all the way in the wobbly post will post on the deck tightens up and it's much easier to build on... However, screwing in the 510 connection center pin all the way makes the pin so recessed it has a problem connecting to some of my mods, and absolutely will not connect to my ohm meter.

I can screw the pin all the way in to lock down the post and attach the coil and then back the post down but then it goes all wobbly again which means i get a short at worst or it jacks with my resistance at best.

I've already pulled it apart and put it all back together. I'm not sure what the deal is other than to say it looks like the center pin in the 510 connection is a bit too short.

Thoughts? Suggestions?
 

ZombieJuice

Full Member
Nov 12, 2013
60
90
Kentucky
What you need to do to fix that is this: the Russian 91% has an adjustable center pin. Which means that the center pin isn't directly connected to the post screw. Unscrew the 510 center pin completely and take it out along with the black o-ring. Now look inside the center part you will see a flat head slot with a hole in the middle. That is the actual post screw that you can tighten to fix your wobbly post. Just hold your post in the correct position over the white delrin insulator and tighten the screw from the bottom. Then you can screw the center pin screw back in to your preferred length.

I have a Russian 91% too and encountered the post being loose myself. Every time I adjusted my center pin it would mess up my build. So I did the above steps and tightened it up. Now no problems.

Happy vaping...

Sent from my Nexus 7 using Tapatalk
 
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merddyn2002

Full Member
Verified Member
Jan 6, 2014
37
16
Pearland, Tx
wow man, can't say thank you enough. i never would have figured that out. Worked like a charm. It's such a pita to try and build on that thing with the 2nd post swinging out everywhere on a whim. I was also able to lower the adjustable 510 pin so that i can get a solid connection with it. I just rebuilt a coil on my 91 and it took like 5 minutes compared the 20 minutes of frustration i was running into before.

I'm no longer considering trading my 91 now that this is fixed.... excellent flavor and not bad to build on. :)

What you need to do to fix that is this: the Russian 91% has an adjustable center pin. Which means that the center pin isn't directly connected to the post screw. Unscrew the 510 center pin completely and take it out along with the black o-ring. Now look inside the center part you will see a flat head slot with a hole in the middle. That is the actual post screw that you can tighten to fix your wobbly post. Just hold your post in the correct position over the white ceramic insulator and tighten the screw from the bottom. Then you can screw the center pin screw back in to your preferred length.

I have a Russian 91% too and encountered the post being loose myself. Every time I adjusted my center pin it would mess up my build. So I did the above steps and tightened it up. Now no problems.

Happy vaping...

Sent from my Nexus 7 using Tapatalk
 

merddyn2002

Full Member
Verified Member
Jan 6, 2014
37
16
Pearland, Tx
I just got my Russian today and no matter how much I tighten that inside center screw it still won't stay still when I adjust the 510 connector. Is there some kind of trick to it?

That center 510 pin is actually 2 pins connected.

Remove it entirely from the russian by unscrewing it form the bottom. (one of the sides of the deck sill fall off, be careful you dont lose it)

Once removed unscrew the top of the pin (the one you just removed, it's 2 parts, just doesn't look like it). Just hold it and start unscrewing the top. It will separate.

Once separated screw the long portion all the way back into the russian all of the way as far as it will go, securing the deck snuggly.

Then screw the smaller part of the pin back into the russian, threading it back into the larger part o the center pin.

No more wobbly. You treat them as 2 independent pins, it's just that one is screwed into the other.
 

merddyn2002

Full Member
Verified Member
Jan 6, 2014
37
16
Pearland, Tx
Yea I actually did all that, and I screwed the larger pin in until I felt like I was about to break it. When I screw the smaller pin in to adjust the connector the deck still moves around and causes a short. I got it to work at least, but the deck is still not 100% secured.

Maybe that's the 91% of which they speak. :facepalm:

Ha....

ironically... perhaps spookily so, i just had the exact same issue with my tank as well. It quit firing for some reason. I pulled it apart and the deck was swinging a bit causing a short in the coil. It was time to rebuild so that i did.

I pulled out the brass pin and re-tightened the main pin that holds the deck post in place and sure enough it had worked itself a little loose. I got about an 1/8th of a turn in before it got really snug again. Put it all back together, mounting a 1.08 coil and boom... rock sold smoke again.

only thing i can say is to try and re-tighten that center pin again, bro.
 
What you need to do to fix that is this: the Russian 91% has an adjustable center pin. Which means that the center pin isn't directly connected to the post screw. Unscrew the 510 center pin completely and take it out along with the black o-ring. Now look inside the center part you will see a flat head slot with a hole in the middle. That is the actual post screw that you can tighten to fix your wobbly post. Just hold your post in the correct position over the white delrin insulator and tighten the screw from the bottom. Then you can screw the center pin screw back in to your preferred length.

I have a Russian 91% too and encountered the post being loose myself. Every time I adjusted my center pin it would mess up my build. So I did the above steps and tightened it up. Now no problems.

Happy vaping...

Sent from my Nexus 7 using Tapatalk

Just found this post. I was getting frustrated not being able to get the 91 working. Thank you.
 

carrielsal

Vaping Master
ECF Veteran
Verified Member
Oct 27, 2013
5,979
8,573
Don't over tighten the center post too much. There is an insulator on the inside that could potentially be broken by over tightening. The positive block always wants to move when I tighten the positive screw. I use a pair of needle nose pliers and hold the positive post with the negative post when I tighten the positive screw.
 

sahsah

Super Member
ECF Veteran
Oct 18, 2013
513
230
los angeles, california, USA
What you need to do to fix that is this: the Russian 91% has an adjustable center pin. Which means that the center pin isn't directly connected to the post screw. Unscrew the 510 center pin completely and take it out along with the black o-ring. Now look inside the center part you will see a flat head slot with a hole in the middle. That is the actual post screw that you can tighten to fix your wobbly post. Just hold your post in the correct position over the white delrin insulator and tighten the screw from the bottom. Then you can screw the center pin screw back in to your preferred length.

I have a Russian 91% too and encountered the post being loose myself. Every time I adjusted my center pin it would mess up my build. So I did the above steps and tightened it up. Now no problems.

Happy vaping...

Sent from my Nexus 7 using Tapatalk
ok so I have sever Russians and kayfuns, so I know what you wrote here. The problem I'm having with the russian 91% I just bought is that even after taking out the 510 pin with the attaché o-ring, when I try to hold the positive terminal in place and tighten the top screw which the 510 goes into, it still turns the positive terminal, as if they're connected. Is this a new revision to the 91 I'm not aware of in newer models? Also, even when I tighten everything up it's never secure, even when crooked, it's just always able to be swished and swoshed in either direction. If someone's got some insight into this matter I'd be EXTREMLY grateful and appreciative. Thank you for taking the time to read this my fellow vaping brothers and sisters and always remember to keep on vaping all you cloud chasing cowboys (and cowgirls):vapor:
 

Jdbaker82

Ultra Member
ECF Veteran
Verified Member
May 16, 2014
1,282
966
United States
What you need to do to fix that is this: the Russian 91% has an adjustable center pin. Which means that the center pin isn't directly connected to the post screw. Unscrew the 510 center pin completely and take it out along with the black o-ring. Now look inside the center part you will see a flat head slot with a hole in the middle. That is the actual post screw that you can tighten to fix your wobbly post. Just hold your post in the correct position over the white delrin insulator and tighten the screw from the bottom. Then you can screw the center pin screw back in to your preferred length.

I have a Russian 91% too and encountered the post being loose myself. Every time I adjusted my center pin it would mess up my build. So I did the above steps and tightened it up. Now no problems.

Happy vaping...

Sent from my Nexus 7 using Tapatalk

thank you for this I didn't know and had same problem

Sent from my SCH-I545 using Xparent Skyblue Tapatalk 2
 

ibndevilish

Super Member
ECF Veteran
Verified Member
Mar 15, 2014
449
502
Torrington ,CT
Yea I actually did all that, and I screwed the larger pin in until I felt like I was about to break it. When I screw the smaller pin in to adjust the connector the deck still moves around and causes a short. I got it to work at least, but the deck is still not 100% secured.

Maybe that's the 91% of which they speak. :facepalm:

I had issues with my Russian and took both pins out try and tighten them and it would never stay tight no matter what I did. I finally sent it back and got a refund. After it moved and gave me errors on my Provari 2 times that was enough. I tried for 3 days to get it to work and stay tight just to have a build on it. I loved the look of it but the quality is ....e
 

ClintS

Senior Member
ECF Veteran
Verified Member
Apr 14, 2014
265
398
San Diego area, CA
There is a special tool included with the Russian 91% V2 to tighten the center post. As somebody mentioned if you over tighten you may crush the insulator. Another option - check with the dealer you bought the device from and they may be able to give you a replacement pin. It is not adjustable, but keeps the positive deck in place and the pin protrudes just enough. You may also want to replace the top side insulator if it keeps getting worse.
 

nynvolt

Senior Member
Aug 2, 2014
216
102
Placentia, CA, USA
I added extra O rings under the 510 screw. It comes with one, I've got three on it now. I tightened the post to where I thought I'd break or strip it but it would still come loose. Now with the extra O rings, it's much improved. I can adjust the 510 screw out more without the post screw coming loose. It still requires attention ever so often but it's staying put for maybe ten builds before it gets lose again. It's a design flaw.
 
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