Somewhere,.... I heard an estimate of 11mm for virgin...
Makes sense, it wouldn't be zero....
The start doesn't really matter... it's the change allowed before the adjuster gives out.
The chain can handle the stretch.... it's minimal...
We.... want the adjuster to handle it...
An external screw adjust, would be nice,... but, in either case the plastic guides have a limited life...
So,... what's the matter?...
Tech must catch up with engineering...
If guides lasted indefinitely,...an infinite adjuster would be maintenance free...
In this case,... our old school machine, is keeping up well enough...
Belt drive, would be cleaner....
Gear dive would be louder...
We'd still have Bitches...