Rollers/Sliders?

[inuyasha]

Hi
I use sliders in all my scoots
They last longer give better low end aceleration and a higher top end speed

I'm partial to Dr pulleys and have had great results with them
Take care and ride safely
Yours Hank

[bnc]

I would be careful about using sliders/rollers that do what Dr. Pulley shows in their video above. What the video does not show is that it eats into the safety margin that keeps the belt from flying off the pulleys.

Here is a video presumably with factory rollers. Notice how close to the maximum diameter of both the front and rear pulleys the belt gets. If the Dr. Pulley system can squeeze the front faces together more as they show to get higher speed, the belt would be close to exceeding the diameter of the front pulleys on the bike in this video. The same is true if the front faces can move farther apart giving a lower, low end. The belt on the rear pulley then would get nearer to the maximum diameter of the pulley.

The Dr. Pulley system can work fine so long as the pulleys are large enough in diameter that the belt cannot come off. The problem for Dr. Pulley is that they cannot know just how close the scooter manufacturers safety margin is but you can check it just like in the video below.

[blueboy5000]

Originally Posted by bnc

I would be careful about using sliders/rollers that do what Dr. Pulley shows in their video above. What the video does not show is that it eats into the safety margin that keeps the belt from flying off the pulleys.

Here is a video presumably with factory rollers. Notice how close to the maximum diameter of both the front and rear pulleys the belt gets. If the Dr. Pulley system can squeeze the front faces together more as they show to get higher speed, the belt would be close to exceeding the diameter of the front pulleys on the bike in this video. The same is true if the front faces can move farther apart giving a lower, low end. The belt on the rear pulley then would get nearer to the maximum diameter of the pulley.

The Dr. Pulley system can work fine so long as the pulleys are large enough in diameter that the belt cannot come off. The problem for Dr. Pulley is that they cannot know just how close the scooter manufacturers safety margin is but you can check it just like in the video below.

So far, I've found the gy6 157 115mm steep-ramp CVTs to be very much standardized, making the condition you describe extremely improbable to outright completely impossible.

The dimensions and ramp-angles on the KOSO, Dr Pulley and Mallossi 115 large-sized gy6 Variators are extremely similar, and in the case of KOSO and Mallossi exactly the same.

I also find it ridiculous to state that Dr Pulley would not have knowledge of the gy6 150cc margins and parameters as it is arguably the most numerous and common engine on Earth.

[bnc]

Do a video and show us how high the belt rides with their pulleys then.

I also find it ridiculous to state that Dr Pulley would not have knowledge of the gy6 150cc margins and parameters as it is arguably the most numerous and common engine on Earth

There was no reference to any particular make or model. The video was to illustrate how high standard rollers can cause the belt to ride up near the edge of the pulley.

The problem for Dr. Pulley is that they cannot know just how close the scooter manufacturers safety margin is but you can check it just like in the video below