How does scooter clutch work

It does feature a brace along the inside that helps prevent the clutch from warping due to the rotational force applied to the clutch arm posts.

You can swap out the springs pretty easily by popping this plate off. It weighs g and the pads are 37 mm x It is sturdy and will last as long as your old one did. Next up is the NCY green performance clutch. It is not adjustable. It has an inner brace. It weighs g and the pads are The bigger pads are a big reason why this is considered a performance clutch.

It is also green, which is one of the faster colors, and the fit and finish of this one are head and shoulders above stock clutches. NCY also makes an adjustable clutch for GY6. The adjustment on this clutch is unique to all of our other GY6 clutches. There are actually removable weights in the three arms. With the weights installed, this clutch weighs in at g. Removing the three weights drops it down to g. The pads are 48 mm x 22 mm, and it does not have an inner brace.

Once the engine rpm reaches its maximum limit the slipping stops. This is the point where the vehicle achieves its maximum speed.

This is the point where the centrifugal force should be limited. If the centrifugal force goes above this, it will blow the clutch. A weaker spring or heavier shoes are used to engage the clutch at lower rpm, while a stronger spring or lighter shoes are used to engage at higher rpm to transmit more power to the rear wheel but this increases wear rates of clutch shoe. Beside the normal type, another type of centrifugal clutch has friction and clutch disks stacked together like in a normal clutch.

The friction pads force these disks together and engage the clutch. Featured image source — Engineering Clicks. Home Bike News. June 3, And I need it for shopping etc. I have had two bikes before when I was much younger :- , first a cc Yamaha and then a Honda Supersport. The best time of my life. This scooter with the running board petrified me, it just feels so weird.

Well today I started it in the garage and I held the brake handle at accelerator? Luckily the gardener was here and could help myself and the bike back up. Please tell me how do I use the controls individually or together, which is which? Please set my mind at ease guys. Then I can practice in my mind till I feel confident enough to try again. Thank you so much, Felicity.

December 6, at am. Hi Felicity. I can totally understand that this petrified you! Does a Scooter Have a Clutch? Last Updated: Normal automatic gearbox A normal automatic gearbox uses gears to help with matching engine speed to road speed. Why is CVT better? If they are wobbling, check that you have mounted everything correctly! Tauten the drive belt by pulling it slightly out from between the rear pulley halves. Remove the clutch bell housing from the shaft so that you can check its inner running surface and the linings of the centrifugal weights.

Check with your local dealership about wear limits — linings that are less than 2 mm thick or have worn unevenly need to be replaced immediately.

You can check the clutch without having to remove the drive belt. Step 13, Fig. If you are changing the clutch linings and springs, it is better to pull the entire rear pulley unit, complete with clutch, off the shaft, as it has to be screwed on and this is made more difficult by a spring inside.

To do this, first remove the drive belt. To undo the central nut on the shaft, hold the clutch bell housing firmly with a special tool that grips in the openings of the bell housing, or hold the exterior of the bell with a strap wrench.

Once again, it may be helpful to get someone to hold the gripping tool in place while you undo the lock nut. If the nut is located on the outside, you can undo it before removing the variator cover — in which case, you will already have carried out this step, as in our example. When you have unscrewed the nut, remove the clutch bell housing and, as mentioned in the previous section, check for signs of wear and tear grooves.

If the clutch linings are worn or the springs of the centrifugal weights have become stretched, you will need to pull the pulley unit, complete with clutch, off the shaft, as described in the previous section. This unit is held together by a large central nut.

To loosen this nut, grip the clutch with a suitable tool, such as a metal strap wrench, and use a special wrench of the correct size to loosen the nut — water pump pliers are not suitable! Because the pulley halves are pressed together by an inner contra spring, the unit will jump apart when you loosen the nut — so bear this in mind and press against the unit in order to remove the nut gradually from the shaft. Be aware that if your scooter's engine is bigger than cc, the spring tension is quite strong.

In order to hold down the spring, we strongly recommend holding all the components together from the outside using a spindle, and gradually slackening off after you have removed the nut. This spindle also helps to control the spring during reassembly so that it is easier to put on the nut. Once you have detached the clutch from the pulley, you can replace the springs and the linings. Always use new circlips when changing the linings and make sure that they are securely seated.

The bushing of the pulley unit generally contains needle bearings — it is crucial not to allow any dirt to get into the bearings and to make sure that they are running smoothly and easily. Check the bearings for leaks — because any grease landing on the drive belt may cause it to slip.

To install the clutch, proceed in reverse order. Before closing the variator housing again, double-check that all the components are correctly installed and then re-mount all external components back in their original position. In order to ensure optimum road performance, the weight of the variator rollers must be optimally matched to the engine's rpm range. If the variator rollers are too heavy, the high centrifugal force will push the belt upwards between the pulley halves at the front before the engine reaches its ideal speed — the engine will labour and you will not get good acceleration.

If the weights are too light, the transmission ratio will be constantly too short, the engine overrevs, and you lose power. For example, many standard 50cc engines with their original exhaust have an ideal speed of approx. The variator is then tuned to this speed — i. However, if you install an aftermarket exhaust which supports the cylinder charge differently, or if you are using other tuning parts, this ideal speed will not be the same.

The majority of performance exhaust systems will produce a higher ideal speed and will require lighter variator rollers. These are often supplied with the exhaust.

If you do not install these at the same time, your "performance" exhaust may well become more of a performance-reducer. You also need to bear in mind the weight of the rider when tuning. So if you are looking to get the most out of your scooter engine, it will take some trial and error to find out which variator roller weights are best for you.

There are tuning kits available on the market for this purpose. Once you have determined the optimum roller weight, you replace the tuning rollers with the rollers for long-term use.

Street-legal If tuning enables your scooter to exceed the permitted top speed, it will no longer be street legal. Some variators are fitted with a throttle ring limiter ring in order to meet German approval guidelines — removal of this ring will also mean that your scooter is no longer street legal. And if you don't yet have a driving license that permits you to drive faster vehicles, you may find yourself in a whole lot of trouble if the police catch you on a public road riding such a tuned up scooter!

The Louis Technical Centre If you have a technical question about your motorbike, please contact our Technical Centre , where they have endless experience, reference books and contacts. Please note! These tips for DIY mechanics contain general recommendations that may not apply to all vehicles or all individual components.