O-guruma (large wheel) is a leg technique from the fourth group of the gokyo. Tori stretches his leg across the top of uke's thigh like a bar, then pulls uke forward and over it without ever loading him onto the hip.
Why o-guruma is not a failed harai-goshi
From a distance, o-guruma looks like harai-goshi. Same rotation, same leg reaching out to the side. Yet the Kodokan files it among the ashi-waza of nage-waza, and for good reason. The leg does not sweep and the hip does not carry uke. The leg stays still while the hands pull uke over it.
Here is how the family lines up:
| Technique | Contact point | What the leg does |
|---|---|---|
| Hiza-guruma | Uke's knee | Blocks with the sole of the foot |
| O-guruma | Upper thigh, hip crease | Bars, leg straight |
| Harai-goshi | Thigh, hips in contact | Sweeps backward |
In the gokyo, o-guruma comes in the fourth group. It needs very clean kuzushi, which explains why it is taught after hiza-guruma and harai-goshi.
Kuzushi comes first
Without kuzushi, o-guruma does not work. Uke must be up on his toes, pulled toward his front right corner (for a right-handed tori). The hikite pulls the sleeve toward your own temple, elbow high. The tsurite lifts the lapel and adds a slight turning push.
The right moment is when uke steps forward with his right leg or straightens up after an attack. His weight is already heading forward. All he is missing is an obstacle.
How to do o-guruma (right-handed)
Pivot on your left foot as you place it in front of his left foot, toes turned out. Your right leg straightens and comes across his right thigh, high, almost at the groin. Lock the knee.
Your hands keep the rotation going. The hikite comes down toward your left hip while the tsurite pushes. Your body turns like a door on its hinges. Uke goes over the leg and lands in front of you.
What makes the difference is timing. The leg arrives after the off-balance, not before. Put the bar in front of a stable opponent and he feels it and steps back.
Common mistakes
- Leg too low. It hits the knee and you get a badly built hiza-guruma.
- Bent knee. The bar collapses under uke's weight.
- Hips glued to the opponent. Without meaning to, you turn it into a harai-goshi with a leg that does not sweep.
- Eyes on the floor. Your head steers the rotation, so look over your left shoulder.
Combinations and counters
O-guruma links well after an o-uchi-gari feint. Uke pulls back the attacked leg and then comes forward to regain balance. That is the moment to put the bar across.
It is also a fix when your harai-goshi gets blocked because uke stepped around your hip. You can no longer get close, but your leg can still bar further out.
On defense, uke steps around the leg with his right foot or drops his hips. A trained opponent will use the moment to counter with ura-nage or ushiro-goshi, since your back is half turned.
Who should use o-guruma?
O-guruma suits tall judoka with long legs. Against a shorter opponent, the bar lands at belly height and loses its leverage. Against a left-hander in opposite grips (kenka-yotsu), the entry is longer because his front leg is on the wrong side. Save it for the moments when he repositions.
A simple drill
Work the throw on the move, with uke stepping forward in tsugi-ashi. Tori steps back twice, then on the third step pivots and extends the leg. At first, uke does not fall. He bumps into the bar and stops. Once the hand rotation is clean, move to a crash mat.
Film yourself from the side. The height of the leg shows up instantly on video, while on the mat you can barely feel it.