As a new company offering a completely new product, we have been working tirelessly to engage our customers in order to obtain valuable feedback. Our ultimate priority is to ensure that our customers are completely satisfied with their 3D Manual Clutch.
We have received feedback from a few customers that the locking mini bike clutch lever does not provide them with enough 'friction zone' to accurately and effortlessly control clutch slippage when accelerating from a stop. The friction zone is defined as the range of clutch lever motion that allows the clutch to be slipped during acceleration. Ideally, the friction zone should be about 50% of the total lever travel, thus providing a broad range of lever motion for which the clutch can be precisely controlled to keep the engine running in the power band. The image below does well to explain what the friction zone is.
To investigate the problem further, we conducted a few tests and determined that the friction zone of the locking clutch lever is only 1/2" wide. In other words, the difference between bogging and free wheeling is only a 1/2" of lever travel. For some users, this makes the clutch feel too much like a 'switch' where the clutch is either fully in or out with no in-between.
We determined that the cause of this issue is the locking clutch lever. The geometry of this particular lever does not lend itself well to precise control of a manual clutch. As a result, we have discontinued the locking clutch lever in favor of an alternative lever.
The replacement lever is called the Magnum EZ Pull lever and can be seen in the image below. This particular lever has excellent geometry and mechanical advantage. When used with the 3D Manual Clutch, the friction zone increases to 1.5". This makes the clutch feel a lot more progressive and less sensitive. The one downside is that the Magnum lever does not have a lock on it, but the many advantages outweigh this disadvantage.
Not only does this lever look great, but at a low price of $19.99, it's very affordable as well. Please let us know if you have any questions regarding this change.