'Schlumpf Mountain Drive'

 

Maintenance

How to maintain it from the manufactureres Web site. Includes Lubrication, Bearing play etc.

Installation

General

  1. The failure was (probably) caused by me.  The Mountain Drive is the stoker crankset on my Screamer, and did NOT have the steel spider offered for tandems or dual chainrings.  LRaY (the most powerful rider on the planet :-)) had been a stoker for me and had bent the single chainring.  In changing the chainring I had loosened (unnecessary) the bolts holding the unit together, allowing the "O" ring to slip into the gears.  Once in the gears, apparently the "O" ring had caught in the gears and had caused a gear to shear off, then creating a mess that eventually led to the final lockup.
  2. Florian Schlumpf was incredibly prompt in addressing the problem and will repair it under warranty.  He is DEFINITELY involved in customer service - in fact, he offered to send a replacement unit until the repair is made.
    The bottom line:  IF YOU, FOR ANY REASON, OPEN UP THE MD UNIT, MAKE ABSOLUTELY CERTAIN THAT THE "O" RING SEAL IS BACK IN PLACE.  THIS REQUIRES CARE AND PATIENCE.

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Thursday, 29 January 2009