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Neidrauer Adventures Photo Album » Building a Live Steam Locomotive - the Mikado Project » Section 11 - Valve Gear
NewTumblerShaftJuneJuly2010 011 NewTumblerShaftJuneJuly2010 009 NewTumblerShaftJuneJuly2010 008 NewTumblerShaftJuneJuly2010 006 NewTumblerShaftJuneJuly2010 004 NewTumblerShaftJuneJuly2010 003 NewTumblerShaftJuneJuly2010 002 ReplacementTumblingShaft23June10 003 ReplacementTumblingShaft23June10 002 TumblingShaftFinishing31Jan09 005 TumblingShaftFinishing31Jan09 004 TumblingShaftFinishing31Jan09 003 TumblingShaftFinishing31Jan09 002 TumblingShaftFinishing31Jan09 001 TumblingShaftFixtureFabrication24Jan09 006 TumblingShaftFixtureFabrication24Jan09 005 TumblingShaftFixtureFabrication24Jan09 004 TumblingShaftFixtureFabrication24Jan09 003 TumblingShaftFixtureFabrication24Jan09 002 TumblingShaftFixtureFabrication21Jan09 013
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ExhibitPlus TumblingShaftFinishing31Jan09 004
31-Jan-09 With the shaft held between centers (we had drilled center holes in the ends before bending), we use a dial indicator to measure the total indicated runout after the bending operation. The stresses of the cold-formed bend caused the ends to move around, with a very large runout next to the bend point. We focused on getting each end to be within a thou of each other, around the area held in the pillow block. With this we are confident the tumbler shaft will rotate without binding.

NewTumblerShaftJuneJuly2010 011 NewTumblerShaftJuneJuly2010 009 NewTumblerShaftJuneJuly2010 008 NewTumblerShaftJuneJuly2010 006 NewTumblerShaftJuneJuly2010 004 NewTumblerShaftJuneJuly2010 003 NewTumblerShaftJuneJuly2010 002 ReplacementTumblingShaft23June10 003 ReplacementTumblingShaft23June10 002 TumblingShaftFinishing31Jan09 005 TumblingShaftFinishing31Jan09 004 TumblingShaftFinishing31Jan09 003 TumblingShaftFinishing31Jan09 002 TumblingShaftFinishing31Jan09 001 TumblingShaftFixtureFabrication24Jan09 006 TumblingShaftFixtureFabrication24Jan09 005 TumblingShaftFixtureFabrication24Jan09 004 TumblingShaftFixtureFabrication24Jan09 003 TumblingShaftFixtureFabrication24Jan09 002 TumblingShaftFixtureFabrication21Jan09 013
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