Group Buy for Scottoiler eSystem - Feb 2012

[Shifu]

Ah but what causes this "stretch" Shifu??
A chain does not stretch it wears. The elongation of a chain is cause by the wearing of the joints between the links(ie bushing and pins).
This wear (stretching) can be minimised by regularly lubricating and maintaining the chain.

What Tim is offering is product from a reputable manufacturer that is designed to do the work for you so to speak. He is doing this at a discounted price to the members of the forum which he is not obligated to do.
The fact that it shows the accelerometer activity(which is not a bad feature if you need to troubleshoot a fault or just make sure it is funtioning correctly), shows the oil level in the reservoir and a read out for the flow rate, I think it would be a good little bit of gear personally.
But this is my opinion and as the saying goes - Opinions are just like a@#holes, everyones got one!!

Cheers

Technically you are correct though the side plates also stretch under the load. However that wear that causes the stretch has to be on the INSIDE OF THE BUSHES where they slide agains the pins (and the pins wear the most) as they roll when engaging the sprockets. That is where the chain is lubricated at the factory and the O-rings, X-rings or whatever else they use protect that lubricant from escaping and dirt getting into. The outside wear bush contribution is that o.4 mm whe calipers contact when you measure it. That is all. So as that gizmo does nothing to help minimise the wear where it really matters, it is just a logical conclusion that it is useless as the pins will wear long before the rollers or sprockets. In fact, oily and sticky chain is a magnet for all sort of dirt and rubish from the road that then get grounded between the rollers and the sprockets only accelerating that what you try to avoid.

My comment about the accelerometer and all these electronics it get saddled with, was only to say that is has nothing to do with its function and is only designed to bamboozle customers into buying it.