Butterfly Sweep Leverage Explained

In my previous post titled “Understanding Leverage in Brazillian Jiu Jitsu" I explained some of the basic concepts for leverage in general in BJJ.  I wanted to give a more concrete example applied to just one branch of techniques.  So the technique is the Butterfly Sweep.  I’m not going to explain how to do one.  I am only going to explain the leverage behind it a bit more.

In my previous post I mentioned that I thought I saw the Butterfly Sweep as utilising a Class 2 lever.  Well I think that the sweep has more than one lever.

Using the Opponent as a Class 2 Lever

Let’s have a side on look at the butterfly sweep.  Btw this is Stephen Kesting demonstrating the sweep.  Let’s look at the Opponent (White Gi) first.  This is utilising a Class 2 Lever.  His Load is low to the ground on his hips.  If you look at the 3rd and 4th picture you can see that Stephen is creating a Fulcrum on the opponents left shoulder.  In the 3rd and 4th picture you can see that a Force is being generated from the hook . 

So this is our classic Wheelbarrow lever.  The opponents shoulder is the wheel, their load is now in the middle, their leg is the handle. These combine to lift the person over the Fulcrum point (their shoulder).

Using yourself as a Class 1 Lever

Stephen is also using himself as a lever.  To help generate the Upward Force to lift the handle he sits up and in.  He then propels himself backwards (Force going down behind him) while keeping his leg at the same position relative to his own body.  This seesaw action is key,  he doesn’t lie down and then lift his leg – the leg starts lifting as soon as he starts any backward movement. 

If you break it down to basic concepts.  The Load is on his left foot – the handle of the wheelbarrow.  His butt is the Fulcrum (the part that doesn’t move) and the Force is throwing himself backwards (which gives the bonus of gravity to add to your mass) to the ground.  What Class lever is this?  Well the Fulcrum is in the middle of this lever.  He becomes a seesaw.  So it’s a Class 1 lever – which is the strongest for lifting a heavy load.

If Stephen was stronger relative to the person he was sweeping then I’m sure he could have relied on his own muscle strength. He could potentially just sit back and then lift the person using a straight leg. I’ve seen strong guys to this to lighter people.  They muscle the technique. This requires a very strong Class 3 lever.  Where possible utilise Class 1 or Class 2 levers.

Another point is this, if you are too weak to be able to structurally move your leg up as you fall back, keep your hook leg (Load) closer to your Butt (Fulcrum).   Structurally you will make the Lever (your body) stronger, but the side effect is it’s now slower to lift.

This is where feel comes in.  I’m just discovering this, but I think the really good guys make all those adjustments on the fly to make the levers work.  I know I use to do everything correctly, but it felt impossible to actually lift the person because one minor part was wrong.  The part I was forgetting was I had to also make myself a lever.  This helps increase the Force generated to help me lift the opponents leg. It’s easy to overlook that part.

The Butterfly Sweep is a very powerful sweep.  It utilises both people as different levers.  Thinking about BJJ at this level sounds very complex, but the beauty now is once you understand this for Butterfly Sweep  you only need to think about 1 sweep instead of 10  – every butterfly sweep from now on is just a minor adjustment for a specific scenario.  Every Butterfly sweep should have a Wheelbarrow and a Lifting Seesaw.

Some Reasons Why things go wrong

Q: The sweep failed, when I fell backwards he lifted up but then he was able to post out with one hand which stopped him from being swept.

A:  Most instructors probably will say you didn’t secure his arm etc.  A more technically correct answer as applied to leverage is this.   He was able to MOVE the Fulcrum from his shoulder to posted hand (think how hard it is to lift a full wheel barrow when the wheel moves forward as you tried to lift it).  Make sure the Fulcrum can’t be changed or make sure you account for that change. 

Q: The sweep failed,  I did everything right, I used myself as a lever, he came forward but I could lift him.

A:  An Instructor might say keep your hook further down his leg away from the centre line.  A more technical answer is this: The upward Force was being applied to close to the Load.  The further back from the Load you can apply the Force, the less Force you need.  Think trying to lift a wheelbarrow full of cement from the point the handle meets the barrow – This is much harder then lifting it at the end of the handle.

These are just demonstration examples for highlighting  how to apply some good thinking. I’m much more concerned about fixing the basics of my BJJ.  If I can get these concepts correct then I think it will be easier for me to correct minor things such as poor grip selection in a particular scenario.  Through this understanding I will have LESS things to think about when rolling.  For me it’s about technically correct simplification of my applied BJJ.

Happy Rolling

Dan

PS:- Did  you see there are actually 2 Class 2 levers on the opponent – the one I didn’t mention is on the the initial pull down – Looks at Stephen’s arms...

Understanding Leverage in Brazillian Jiu Jitsu

I’ll preface this whole blog by saying that this is going to be a work in progress – expect mistakes.  I’m going to update this particular blog many times (I hope) as my understanding of the mechanics solidifies.  I’ll try to add and expand it.  It MAY be incorrect at times – which is fine as I’ll be able to come back and really refine what I thought I understood.

BEGINNER’s Terminology of Leverage

A Lever can be described in 3 main parts. A “Load”, a “Fulcrum”, and a “Force”. 

Fulcrum – it’s the immovable part,  the part that the rest of the lever has to work around

Load – that’s the weight you are trying to move. Such as the opponent.

Force – That’s Acceleration multiplied by Mass.  A small Mass can produce the same Force as a larger Mass if  the small Mass is Accelerating faster.

In BJJ terms we care about leverage, which means we care about all 3 points as it’s applied to us and our opponent. The chief point we care about is the Fulcrum.  So if you want to apply leverage (which we do if we use BJJ) always think about the Fulcrum.  To get the Fulcrum though you need to have a connection.  This is why connection is critical for BJJ.

No Connection = No Fulcrum = No Leverage = No BJJ.

3 Class Types of Levers

To easily think about what type of lever is being used I currently like to think about what part of the lever is in the middle.

Class 1 Lever – This lever has the fulcrum in the middle. Think  Seesaw.

 

 

Class 2 Lever – This lever has the Load in the middle.  Think Wheelbarrow.

 

 

Class 3 Lever – This lever has the Force in the middle.  Think Tweezers.

 

 

If we considering each of the class levers above with the same load of 1KG.  The Class1 lever requires the least amount of force to move it.  The class 3 lever requires the most amount of force to move the load.  Class1 levers are more efficient than Class 3 levers when it comes to moving something very heavy.  However Class 3 can move the load faster and further.

This is why people say technique triumphs over strength in BJJ (excluding where you talk about both together).  Strength relies a lot on Class 3 levers (your own muscle) to generate Force without considering using the leverage. While good technique will take advantage of Class 1 and Class 2 levers that can be used using less Force and effort to manipulate the opponent.

Examples of Class 1 Lever BJJ techniques

• Armbar from Mount
• Kneebar
• Kimura
• Americana
• Omaplata (sub or sweep)

Most limbs can easily be manipulated by class 1 levers for submissions.  Force can be generated from your hips, or your legs, or just your body weight.

Examples of Class 2 Lever BJJ techniques

• Butterfly sweep
• Arm drag from guard to back attack.
• Upa from Mount
• Sitting Roll Over sweep
• Shrimp (Hip escape – upward and towards part of it) movement from Side Control

I think BJJ utilises class 2 levers mainly for sweeps and reversals.  A lot of the force is generated through the hips (either from the feet and legs or from the core).  Thus like a wheel barrow, it’s easier to lift a weight much more than you would be able to normally.  So generally, we use this class of lever when underneath an opponent. 

Examples of Class 3 Lever BJJ Techniques

• Bicep Crush
• Scissor Sweep
• Front Sweep against standing Guard

I’m not sure how accurate these ones are.  I’m struggling to find  many techniques that actually use class 3 levers.

Leverage is a core component of BJJ.  Being able to move and manipulate using them is one thing.  Being able to recognise the leverage an opponent has against you I think is even better. I’m struggling to find a good defence strategy that is easy to understand.  With so many techniques it’s very hard to identify what my opponent is really doing.  Instead I’m going to develop feel triggers based on the 3 leverage concepts.   I’m going to try to set people up with a repeatable pattern so I can recognise what leverage the person has against me.

In terms of attacking,  I’m already starting to think that an Armbar is an Armbar, no matter from where it’s put on.  Understanding how to to anticipate my opponent based on the leverage he is trying to apply I think is key.  That’s the end goal on why I blogged this.  I want to be able to distil all these attack and defence “bjj techniques” down to core concepts only. For my brain, it’s easier to think about 3 things (Force,  Fulcrum and Load) than 50. 

That’s my very long term plan anyway – that seems like a galaxy far far away…

Happy rolling,

Dan