We're going to talk to you about the often misunderstood and the frequently under-appreciated clutch so far in this video series we've shown you lots of ways to increase the efficiency of your engine, power and torque.  

We're going to show you what the clutch is how it works and its role in managing that power and torque transfer from the engine through the transmission to the rear wheel, we're also going to show you how you can improve the efficiency of the clutch and how doing that not only can dramatically increase its ability to hold power and torque but it can also really increase the rider's control of how that power and torque is transferred through the transmission to the rear wheel uh it's actually kind of cool so very cool. 

Let's go let's get into it let's start by looking at all of the parts that make up your stock 650 slipper clutch this is the clutch assembly the clutch the assembly has a spring plate let's rip that off  all right let's get this spring plate off and that will get us to the springs and the pressure plates under here we have your clutch actuator pin. 

This is your clutch pack your the clutch pack is made up of plates there are two types of plates in your clutch pack there are friction plates and there are steel plates in here we've got your clutch hub and on your clutch hub here is your judder spring assembly now on your hub, that's where your steel plates are slimed too and then this is your clutch basket or your clutch shell and the clutch cell is where your friction plates are supplied to and that's it that makes all of your the slipper clutch on your stock 650. 

How the stock roll in field clutch is assembled and how it functions the clutch shell is driven by the crankshaft on this gear so when the crankshaft turns it drives the clutch shell the clutch hub is attached to the transmission main shaft and it would then once power is applied to it it feeds power to the transmission out to the rear wheel before I show you how to assemble. 

I just want to show you the assist slipper function that's provided by a combination of the clutch hub and the pressure plate these ramps that meet from the pressure plate and the clutch hub alter the distance so the amount of force on the clutch is determined by this distance so this is the distance that your clutch pack has to stack up in as this distance increases the clutch releases as it decreases the clutch is engaged so the assist and slipper.

The function is just that those ramps when power is being applied to the clutch hub and the plates are being under the power driven by the engine. It pulls those ramps together putting more pressure on the clutch plates and helping them hold so that's the assist part the slipper part is when you shut the throttle off especially.