slideyfoot.com | bjj resources

 Home
 Contact
 Reviews
 BJJ FAQ  Academy

This website is about Brazilian jiu jitsu (BJJ). I'm a black belt who started in 2006, teaching and training at Artemis BJJ in Bristol, UK. All content ©Can Sönmez
Showing posts with label teaching # Closed Guard: Armbar. Show all posts
Showing posts with label teaching # Closed Guard: Armbar. Show all posts

26 July 2021

26/07/2021 - Teaching | Closed Guard | Armbar from 2-on-1 grip break

Teaching #961
Artemis BJJ (7 Easton Road), Can Sönmez, Bristol, UK - 26/07/2021

An armbar is one of the various options you have off the standard 2-on-1 grip break. For that grip break, gather their opposite sleeve in your fist (i.e., a pistol grip), then your other hand goes underneath their arm, grabbing your own wrist.

With that configuration, you can either punch straight up to break their grip, or angle your hips away slightly. Make sure that you maintain your grip on their sleeve, straightening your arm. You want to push their arm across their body, while simultaneously pulling in with your knees. The intention is to collapse them on top of their arm. Due to the grip configuration, your outside hand can reach around to their far armpit. You would then normally hook your fingers in for a solid hold, then twist your elbow in firmly. Combined with your stiff-arming sleeve grip, that should rotate their torso and make it hard for them to turn back towards you.

For this armbar, you will instead grip firmly around their back, swimming your other arm under their same side armpit. That means you can lock your hands behind their back, in order to keep their arm firmly stuck. Push off their hip to swivel, angling your body perpendicular to them. From here, you can then push their head out of the way with your head/collar grip. That should make it easier to bring your hip-pushing leg over their head. At this point, you can switch to grasping their wrist with your hand if necessary, or wrap over the top with your arm. Squeeze your knees together, lift your hips and pull down gradually on their wrist for the tap

A common problem is that your partner will 'stack' you up onto your shoulders, making it difficult (though not impossible) to finish the technique. This is a common problem with the triangle too. To prevent that situation, push with your legs, as well as really knocking your partner's posture when you kick across with the armpit leg. You can also 'walk' back on your shoulders to recover a more extended position if they are squashing you. Finally, angling the leg you have by their head can help (like on Adam Adshead's old DVD), as that makes it tougher for them to push into you.

_____________________

Teaching Notes: I haven't taught this particular set up for the armbar before, but it feels like a handy additional option off the 2 on 1 grip break I often teach. The tricky bit is the rotation, to position yourself perpendicular. I found that looping your same side arm under their arm bit with the other around the head made for a solid control, leaving your legs free to push and swivel you into position.

17 June 2019

17/06/2019 - Teaching | Closed Guard | Armbar (Step on the Hip, plus Cross & Clamp)

Teaching #880
Artemis BJJ (Easton Road), Can Sönmez, Bristol, UK - 17/06/2019



For this fundamental attack from the guard, you first need to get control of their arm. There are numerous ways to do this, but in the interests of keeping things simple for drilling, a straightforward option is to grab their opposite tricep with your hand, then pull that across your body. You're then going to put your same side foot on their hip, clamping the knee of that leg behind their shoulder (essentially you're trying to take away their space, as well as blocking them from easily pulling their arm backwards).

If they're wearing a gi, grab their opposite collar with your free hand (keeping a firm hold of their arm with your other hand) and pull them down. If it's nogi, grab their head. Next, kick your free leg into their armpit, aiming to further break their posture and get your leg across their back. You're also going to use that to swivel your own body away from their trapped arm and get a better angle. From here, you can then push their head out of the way with your head/collar grip.



That should make it easier to bring your hip-pushing leg over their head. Slide the arm you're using to control their arm up towards their wrist. At this point, you can switch to grasping their wrist with your hand if necessary. Squeeze your knees together, lift your hips and pull down gradually on their wrist for the tap.

A common problem is that your partner will 'stack' you up onto your shoulders, making it difficult (though not impossible) to finish the technique. This is a common problem with the triangle too. To prevent that situation, push with your legs, as well as really knocking your partner's posture when you kick across with the armpit leg. You can also 'walk' back on your shoulders to recover a more extended position if they are squashing you. Finally, angling the leg you have by their head can help (like on Adam Adshead's old DVD), as that makes it tougher for them to push into you.

For a fun additional option, I also like to show the cross and clamp armbar when there are more advanced students in the class. From a double sleeve grip, you are aiming to cross their arms over. Sometimes you may be able to just pull them over, but you can also get them to help you by pulling their arms apart. The natural reaction is to resist by bringing the arms together, which is when you can switch directions to cross them over.

Fling your legs up high, right up over their shoulders. Lock that in place, squeezing hard. You need to have the pressure above their elbows in order to get the necessary leverage. When you have that squeezed in, you can simply pick an arm and pull on the wrist, in the direction their elbow is pointing. Be careful on this, as they won't be able to tap easily: listen out for them saying 'tap', or using something else like their foot.


_____________________

Teaching Notes: Make sure people don't cross their feet, emphasising that tends to relax the leg muscles making it easy to dislodge the legs. Highlight that you should be looking at your knees. Having the cross and clamp to throw in is useful, if there are more advanced people there, so I did that again today. Also because I wanted to get it on video. ;)

24 August 2018

24/08/2018 - Teaching | Closed Guard | Instep to neck sweep into armbar

Teaching #797
Artemis BJJ (MYGYM Bristol), Can Sönmez, Bristol, UK - 24/08/2018



From the instep to neck position, swivel and kick to knock them over. A butterfly hook is a handy method for adding extra leverage. Once you've knocked them over, you can either submit them from your crossed feet position, or swivel into a standard armbar.
_________________
Teaching Notes: Looks like I forgot to write notes on this again, meh. From what I remember, generating the right leverage on this can be awkward.

22 August 2018

22/08/2018 - Teaching | Closed Guard | Instep to neck armbar variations

Teaching #796
Artemis BJJ (MYGYM Bristol), Can Sönmez, Bristol, UK - 22/08/2018



You're looking to do the usual legs over etc, but can't quite lock the position. Swivel and turn your leg, so that your foot is now pressing into their neck, your knee pointing away and close to their body. Keep control of their arm. Wrap your arm over the top so the wrist is in your armpit, then angle inwards for the submission (a sort of americana).



If they are starting to pull free, you can try and gogoplata them instead, reaching behind their hand to grab your foot. It's a throat crush though, so not a submission I'm keen on. I prefer the option of using that to sweep them over. You can then swivel your other foot in to cross over their neck and submit them from there.



In the guard, you can also swivel both feet in for the armbar. Alternatives are turning to lock your other leg over. Swivel and turn the top knee in to return to crossed feet, or switch legs and continue the spin to your leg over on the other side. To adjust, you can stick one foot into a spider guard position and bring the leg into locking position from there. That becomes a flowing drill.





______________________
Teaching Notes: Considering this isn't a simple technique, I thought it went pretty well. It's important to emphasise the two big safety points. First, watch out for the knee, as it's in a vulnerable position. Second, on that bend towards the arm, it must be done slowly. Don't sit up, just bend.

With the leg switching, I think the rule is swivel toward the knee of the hooking leg. That seems to apply ok. I didn't add in the roll them to mount, though I did mention it to some more experienced people in drilling. That could work as a separate class, we'll see on Friday. ;)

22 April 2018

22/04/2018- Teaching | Closed Guard | Figure 4 Bicep Guard Rolling Armbar (NoGi)

Teaching #773
Artemis BJJ (MYGYM Bristol), Can Sönmez, Bristol, UK - 22/04/2018

Good open mat and nogi class today. I tested out another figure four bicep guard option, this time a rolling armbar. You swivel through basing on your head and shoulder, shin into the back of their neck. As you roll them through, switch your leg so your instep is behind their head.

A post shared by Can (Jun) (@slideyfoot) on



That can be tricky to do in transition. Also, you then need to turn and get your knee over towards their legs. A few people kept either going the other way, or not going far enough towards the legs. Basing on the head caused some problems too, understandable as it's a tricky position if you're not used to wrestling.

Loads of drilling during open mat, İ wasn't sparring so I could save myself for the GrappleThon. Matt H showed me an interesting near side gi tail choke, which Oslander calls the snare. İt's nasty, but not a crank. You can do it straight off the cross face, then just loop your arm around and drop the elbow. How to make it less mean?


20 January 2017

20/01/2017 - Teaching | Closed Guard | Armbar (Step on the Hip)

Teaching #621
Artemis BJJ (MYGYM Bristol), Can Sönmez, Bristol, UK - 20/01/2017

A video posted by Artemis BJJ (@artemisbjj) on


For this fundamental attack from the guard, you first need to get control of their arm. There are numerous ways to do this, but in the interests of keeping things simple for drilling, a straightforward option is to grab their opposite tricep with your hand, then pull that across your body. You're then going to put your same side foot on their hip, clamping the knee of that leg behind their shoulder (essentially you're trying to take away their space, as well as blocking them from easily pulling their arm backwards).

If they're wearing a gi, grab their opposite collar with your free hand (keeping a firm hold of their arm with your other hand) and pull them down. If it's nogi, grab their head. Next, kick your free leg into their armpit, aiming to further break their posture and get your leg across their back. You're also going to use that to swivel your own body away from their trapped arm and get a better angle. From here, you can then push their head out of the way with your head/collar grip.

That should make it easier to bring your hip-pushing leg over their head. Slide the arm you're using to control their arm up towards their wrist. At this point, you can switch to grasping their wrist with your hand if necessary. Squeeze your knees together, lift your hips and pull down gradually on their wrist for the tap.

A common problem is that your partner will 'stack' you up onto your shoulders, making it difficult (though not impossible) to finish the technique. This is a common problem with the triangle too. To prevent that situation, push with your legs, as well as really knocking your partner's posture when you kick across with the armpit leg. You can also 'walk' back on your shoulders to recover a more extended position if they are squashing you. Finally, angling the leg you have by their head can help (like on Adam Adshead's old DVD), as that makes it tougher for them to push into you.

_____________________

Teaching Notes: After teaching both the triangle and the armbar, this one appears to stick better. The main stumbling blocks are similar to the triangle, in that people often forget about head control and/or don't swivel around far enough. I've got a bunch of other variations I can teach (largely thanks to that great class Chris Haueter taught on armbar in Leuven last year), so I must remember to add those in too occasionally. This still feels like the central one to go for, though that might just be because it's the one I'm most familiar with.

20 August 2016

20/08/2016 - Teaching | Closed Guard | Armbar (Cross & Clamp)

Teaching #549
Artemis BJJ (MYGYM Bristol), Can Sönmez, Bristol, UK - 20/08/2016

A photo posted by Artemis BJJ (@artemisbjj) on



This is a mechanically simple technique you can use to surprise people, if they're being lazy with their arms. From a double sleeve grip, you are aiming to cross their arms over. Sometimes you may be able to just pull them over, but you can also get them to help you by pulling their arms apart. The natural reaction is to resist by bringing the arms together, which is when you can switch directions to cross them over.

Fling your legs up high, right up over their shoulders. Lock that in place, squeezing hard. You need to have the pressure above their elbows in order to get the necessary leverage. When you have that squeezed in, you can simply pick an arm and pull on the wrist, in the direction their elbow is pointing. Be careful on this, as they won't be able to tap easily: listen out for them saying 'tap', or using something else like their foot.

_____________________

Teaching Notes: On the technique, cross and clamp worked pretty well. I'll emphasise lifting the hips more, as that gives you more leverage for the armbar. Also, it's important to listen closely on the tap, they have nothing left to tap with!

People were still having trouble with those armbar drills, so I need to keep working on how to make them easy to understand. It's easy to confuse the legs. On the swinging armbar drill, the non-armbar leg pendulums into the hip, use that momentum to swing the other way, then lift your hips. Also, there is a slight push with your other thigh. On the climbing armbar, once the leg is over their shoulder, that's the side you're armbarring. The other leg digs into their armpit.

17 August 2016

17/08/2016 - Teaching | Closed Guard | Armbar (Climbing)

Teaching #548
Artemis BJJ (MYGYM Bristol), Can Sönmez, Bristol, UK - 17/08/2016

Rather than the usual armbar I teach, I wanted to draw on Chris Haueter's excellent lesson from this year's BJJ Globetrotter campin Leuven. Start by controlling the wrists (harking back to the hands, head, hips approach he emphasised throughout his classes). Reach over their arms, keeping your arm pressing into both of theirs, then hook their elbow.

Pull that elbow across, to get control of the arm. Next, hook your opposite hand around their shoulder to anchor into their armpit. Use that to break their posture. Climb your legs up their back, until you can get a leg over their shoulder (on the side you have their arm controlled). Make sure you maintain the tension all the way throw, not giving them any space to pull their arm free.

Once you have your leg over their trapped-arm side shoulder, clamp down with your other leg into their armpit. Reach your shoulder leg over their head. Angle that leg by the head slightly, like in Adam Adsheads old DVD. Hauetuer perfectly condensed it into five words: pull, hook, climb, reach, armbar.

A video posted by Can (Jun) (@slideyfoot) on


_____________________

Teaching Notes: I think the main thing to emphasise on this next time is staying tight and getting that leg over the shoulder. Some people were getting confused as to which leg, but saying it's on the side of the arm you're attacking should hopefully help. As both legs are already climbing up, your other leg should already be in position by the armpit.

I've add a new open mat into the schedule for Wednesdays, as a few people have been asking. That means there is now looooads of open mat time, which is good as I think that's key for drilling and extra sparring. That goes for me too, I just need to make myself spar enough. I seem to have a lot of niggling injuries that pop up, especially my wrist and neck, so hopefully the extra weight training I've started will help resolve that. :)

15 August 2016

15/08/2016 - Teaching | Closed Guard | Armbar (Step on the Hip)

Teaching #546
Artemis BJJ (MYGYM Bristol), Can Sönmez, Bristol, UK - 15/08/2016

A video posted by Artemis BJJ (@artemisbjj) on


For this fundamental attack from the guard, you first need to get control of their arm. There are numerous ways to do this, but in the interests of keeping things simple for drilling, a straightforward option is to grab their opposite tricep with your hand, then pull that across your body. You're then going to put your same side foot on their hip, clamping the knee of that leg behind their shoulder (essentially you're trying to take away their space, as well as blocking them from easily pulling their arm backwards).

If they're wearing a gi, grab their opposite collar with your free hand (keeping a firm hold of their arm with your other hand) and pull them down. If it's nogi, grab their head. Next, kick your free leg into their armpit, aiming to further break their posture and get your leg across their back. You're also going to use that to swivel your own body away from their trapped arm and get a better angle. From here, you can then push their head out of the way with your head/collar grip.

That should make it easier to bring your hip-pushing leg over their head. Slide the arm you're using to control their arm up towards their wrist. At this point, you can switch to grasping their wrist with your hand if necessary. Squeeze your knees together, lift your hips and pull down gradually on their wrist for the tap.

A common problem is that your partner will 'stack' you up onto your shoulders, making it difficult (though not impossible) to finish the technique. This is a common problem with the triangle too. To prevent that situation, push with your legs, as well as really knocking your partner's posture when you kick across with the armpit leg. You can also 'walk' back on your shoulders to recover a more extended position if they are squashing you. Finally, angling the leg you have by their head can help (like on Adam Adshead's old DVD), as that makes it tougher for them to push into you.

_____________________

Teaching Notes: The main trouble people had was getting that turn, so I will emphasise the swivel next time. I normally describe it the same way as when going for a triangle, that you want to end up looking at their ear. I could also talk about using the foot on the hip to help with the swivel, again like with the triangle.

I'd ideally have a class combining the triangle, omoplata and armbar all together, or perhaps a drill. That does require people to know all three of those first though: perhaps there is an earlier stage that could combine them all, requiring less detail? I'll have a think. I have begun to add in a swinging armbar and climbing armbar drill, which will also hopefully help get the armbar mechanics into people's heads. With the pendulum, it's the non-armbarring side leg, which you should to really swing out, kicking it back into their hip. There is a slight push off your other thigh too, which I didn't notice until Ross pointed it out, when I was demonstrating it on him.

On the climbing armbar drill, the problem is making sure people stay tight. I tried that climbing up a pole analogy Haueter uses, but I may need something else. Something like imagine you're stuck on with velcro or powerful magnets? I'll experiment. :)

18 January 2016

18/01/2016 - Teaching | Closed Guard | Armbar

Teaching #451
Artemis BJJ (MYGYM Bristol), Can Sönmez, Bristol, UK - 18/01/2016

A video posted by Artemis BJJ (@artemisbjj) on



For this fundamental attack from the guard, you first need to get control of their arm. There are numerous ways to do this, but in the interests of keeping things simple for drilling, a straightforward option is to grab their opposite tricep with your hand, then pull that across your body. You're then going to put your same side foot on their hip, clamping the knee of that leg to their shoulder (essentially you're trying to take away their space, as well as blocking them from easily pulling their arm backwards).

If they're wearing a gi, grab their opposite collar with your free hand (keeping a firm hold of their arm with your other hand) and pull them down. If it's nogi, grab their head. Next, kick your free leg into their armpit, aiming to further break their posture and get your leg across their back. You're also going to use that to swivel your own body away from their trapped arm and get a better angle. From here, you can then push their head out of the way with your head/collar grip.

That should make it easier to bring your hip-pushing leg over their head. Slide the arm you're using to control their arm up towards their wrist. At this point, you can switch to grasping their wrist with your hand if necessary. Squeeze your knees together, lift your hips and pull down gradually on their wrist for the tap.

A common problem is that your partner will 'stack' you up onto your shoulders, making it difficult (though not impossible) to finish the technique. This is a common problem with the triangle too. To prevent that situation, push with your legs, as well as really knocking your partner's posture when you kick across with the armpit leg. You can also 'walk' back on your shoulders to recover a more extended position if they are squashing you. Finally, angling the leg you have by their head can help (like on Adam Adshead's old DVD), as that makes it tougher for them to push into you.

If they do stack you, it's still possible to get the armbar. Swivel out as far as you can, then push on their leg. You'll end up spinning around their arm, putting you in a face down position. That enables you to bring your whole body to bear on their arm, resulting in a powerful armbar. Be warned that you need to be careful of getting bunched up underneath with this. If you misjudge it, you may end up carrying a lot of weight on your neck. Speaking from experience, that hurts, potentially messing up your neck for several weeks or even months.
_____________________

Teaching Notes: I went through the full Sahid drills, starting with them putting their elbow over your belt line, then you swivelling your legs into place. That progresses to grabbing the tricep and pulling the arm over. Once I got to teaching, I was hoping that meant they'd have the basic movements, meaning we could refine it, adding the collar grip and leg twist. A few people still weren't getting the swivel: I'll emphasise that even more next time I teach this. I'm also not sure if it is better to do the collar grip first or arm grab. With the collar grip they have posture and it's tough to break down without a grip. But if the collar grip is in and they're pulled down, the arm is hard to pull across. Meh.

I guess treating this as an initial way to get the basics of armbars down could be the way to go, as there are a bazillion different ways to set it up and finish. As the US Grappling stats (for points competitions at least) revealed, armbars are the highest percentage attack for their competitors. I should therefore invest a decent bit of time teaching and training it. Sparring, I'm not progressing efficiently enough with the omoplata, though I did at least break their posture down better this time.

16 December 2015

16/12/2015 - Teaching | Women's Class | Armbar from Guard

Teaching #437
Artemis BJJ (MYGYM Bristol), Can Sönmez, Bristol, UK - 16/12/2015

For this fundamental attack from the guard, you first need to get control of their arm. There are numerous ways to do this, but in the interests of keeping things simple for drilling, a straightforward option is to grab their opposite tricep with your hand, then pull that across your body. You're then going to put your same side foot on their hip, clamping the knee of that leg to their shoulder (essentially you're trying to take away their space, as well as blocking them from easily pulling their arm backwards).

If they're wearing a gi, grab their opposite collar with your free hand (keeping a firm hold of their arm with your other hand) and pull them down. If it's nogi, grab their head. Next, kick your free leg into their armpit, aiming to further break their posture and get your leg across their back. You're also going to use that to swivel your own body away from their trapped arm and get a better angle. From here, you can then push their head out of the way with your head/collar grip.

That should make it easier to bring your hip-pushing leg over their head. Slide the arm you're using to control their arm up towards their wrist. At this point, you can switch to grasping their wrist with your hand if necessary. Squeeze your knees together, lift your hips and pull down gradually on their wrist for the tap.

A common problem is that your partner will 'stack' you up onto your shoulders, making it difficult (though not impossible) to finish the technique. This is a common problem with the triangle too. To prevent that situation, push with your legs, as well as really knocking your partner's posture when you kick across with the armpit leg. You can also 'walk' back on your shoulders to recover a more extended position if they are squashing you. Finally, angling the leg you have by their head can help (like on Adam Adshead's old DVD), as that makes it tougher for them to push into you.

If they do stack you, it's still possible to get the armbar. Swivel out as far as you can, then push on their leg. You'll end up spinning around their arm, putting you in a face down position. That enables you to bring your whole body to bear on their arm, resulting in a powerful armbar. Be warned that you need to be careful of getting bunched up underneath with this. If you misjudge it, you may end up carrying a lot of weight on your neck. Speaking from experience, that hurts, potentially messing up your neck for several weeks or even months.
_____________________

Teaching Notes: I used Sahid's armbar drilling sequence as usual, copied below. I also decided to stick with the tricep grip where you drag across, which also means you don't have to switch arms to get the grip on the collar. It probably isn't as strong a grip on the arm as the elbow and collar, but it works well for drilling. If I get round to teaching this during closed guard month, that will be a good test, as there should be plenty of new people in January. If they have trouble maintaining control, I'll be able to experiment with some different grips to see which works best for a beginner.

As it was just Ruth tonight, I also went through a bunch of choke variations. We stuck with technique tonight, because I couldn't do a whole lot else given my arm is still recovering from that tattoo. Interestingly, the classic palm up/palm up choke caused some difficulties, so there is clearly a detail that is causing that trouble. I couldn't tell without seeing her do it on somebody else: it will be useful once we get back into normal class numbers after the quiet of xmas. ;)

Here are those notes (again) on Sahid's armbar drills. I think I include all of them this time around:

To help with teaching this, my training partner Sahid has a useful sequence. It starts with drilling the leg positioning. In closed guard, your partner is going to put their elbow on the opposite side of your belt knot/belly button. Bring your leg on the same side as that arm up, so you can pin your knee against their shoulder. Your other leg kicks up into their armpit. Use that to turn your own body, also bringing their body down with the armpit leg. You can now bring your first leg over their head, keeping your heels pointing down (don't cross your legs).

Next, you're going to add in one of your arms. They aren't generally going to give you their arm, so you'll have to drag it across yourself. Reach across with your opposite side arm and grab slightly above their elbow. Still keeping your ankles crossed, lift your hips, then as you drop them, pull the arm across your body. You want to end up with their arm between your forearm and bicep, enabling you to clamp your elbow to your side while also pinning their arm. Your hand goes to your chest.

Step your knee up on their trapped-arm side, again pressing it into their shoulder. Make sure you don't raise that knee before you've pinned the arm, as opening your guard at that point may give them enough space to start escaping. Then finish as before, kicking your other leg up into their armpit, swivelling, bringing your first leg over their head and completing the submissions.

The third and final stage adds in a collar grip with your free hand (if they have a collar: if not, grab their head). Reach for their collar/head after you've pinned their arm, then pull them down. You can also use the elbow of that collar gripping arm to block the elbow of their trapped arm. That prevents them from trying to bring the elbow of their trapped arm to your other side hip, as that would scupper your armbar attempt.

29 July 2015

29/07/2015 - Teaching | Women's Class | Armbar from Guard

Teaching #363
Artemis BJJ (MYGYM Bristol), Can Sönmez, Bristol, UK - 29/07/2015

For this fundamental attack from the guard, you first need to isolate their arm. Easiest way to do that is to grab their wrist with your same side hand, then also grab their elbow. Pull their arm across and pin it to your chest. You're then going to put your same side foot on their hip, clamping the knee of that leg to their shoulder (essentially you're trying to take away their space, as well as blocking them from easily pulling their arm backwards).

If they're wearing a gi, grab their opposite collar with your wrist-hand (keeping hold of their arm with your elbow-hand) and pull them down. If it's nogi, grab their head. Next, kick your other leg into their armpit, aiming to further break their posture and get your leg across their back. You're also going to use that to swivel your own body and get a better angle. From here, you can then push their head out of the way with your head/collar grip and bring your hip-pushing leg over their head. Squeeze your knees, lift your hips and pull down gradually on the wrist for the tap.

A common problem is that your partner will 'stack' you up onto your shoulders, making it difficult (though not impossible) to finish the technique. This is a common problem with the triangle too. To prevent that situation, push with your legs, as well as really knocking your partner's posture when you kick across with the armpit leg. You can also 'walk' back on your shoulders to recover a more extended position if they are squashing you. Finally, angling the leg you have by their head can help (like on Adam Adshead's old DVD), as that makes it tougher for them to push into you.

If they do stack you, it's still possible to get the armbar. Swivel out as far as you can, then push on their leg. You'll end up spinning around their arm, putting you in a face down position. That enables you to bring your whole body to bear on their arm, resulting in a powerful armbar.
_____________________

Teaching Notes: I used Sahid's armbar drilling sequence, sort of, as I started off with a drill where you use your legs. However, I also had a collar grip in there. I'll try it with just the legs next time, then I can build into the rest of the sequence. I should also come up with something better for controlling their other sleeve, rather than simply grabbing it. Starting with a collar and sleeve grip makes sense, although then you have to switch grips, because otherwise it is awkward to push on the head. Grabbing the elbow would make sense too, like in the Sahid drills. I threw in the omoplata too, as it fit with a question that was asked after progressive resistance, in terms of what to do if you lose the arm. Triangle fits in there too, though in this situation the elbow had just slipped back rather than the whole arm being out.

Here are those notes (again) on Sahid's armbar drills, as at some point I'll probably use all of them:

To help with teaching this, my training partner Sahid has a useful sequence. It starts with drilling the leg positioning. In closed guard, your partner is going to put their elbow on the opposite side of your belt knot/belly button. Bring your leg on the same side as that arm up, so you can pin your knee against their shoulder. Your other leg kicks up into their armpit. Use that to turn your own body, also bringing their body down with the armpit leg. You can now bring your first leg over their head, keeping your heels pointing down (don't cross your legs).

Next, you're going to add in one of your arms. They aren't generally going to give you their arm, so you'll have to drag it across yourself. Reach across with your opposite side arm and grab slightly above their elbow. Still keeping your ankles crossed, lift your hips, then as you drop them, pull the arm across your body. You want to end up with their arm between your forearm and bicep, enabling you to clamp your elbow to your side while also pinning their arm. Your hand goes to your chest.

Step your knee up on their trapped-arm side, again pressing it into their shoulder. Make sure you don't raise that knee before you've pinned the arm, as opening your guard at that point may give them enough space to start escaping. Then finish as before, kicking your other leg up into their armpit, swivelling, bringing your first leg over their head and completing the submissions.

The third and final stage adds in a collar grip with your free hand (if they have a collar: if not, grab their head). Reach for their collar/head after you've pinned their arm, then pull them down. You can also use the elbow of that collar gripping arm to block the elbow of their trapped arm. That prevents them from trying to bring the elbow of their trapped arm to your other side hip, as that would scupper your armbar attempt.