Office of Steam Logo_1

Author Topic: Bengs Modellbau 'Karl'  (Read 12217 times)

  • Jr. Member
  • **
  • Posts: 210
  • Location: Somerset, England
Re: Bengs Modellbau 'Karl'
« Reply #15 on: April 28, 2020, 02:11:15 am »
Think i must have spent roughly 8 hours on the right hand flywheel, plugged the centre and re turned it so it ran true on the shaft, then as soon as the tapered collet was tightend it ran out of true again.  Didn't make any difference where it was positioned on the crank, so in the end i dressed the taper collet by hand with a fine file until the flywheel ran true 'enough' not be noticable.



So now the bottom end is complete, it all spins freely with no play.  Got to make an 'adjusted' govenor spool and trim the crank to length on the left side once some brass rod arrives from the suppliers.



A new cylinder liner from Bengs arrived the other day and this one was much better and has a good surface once honed.  I decided to change the design so the liner is trapped between the head and water jacket rather than the head and crankcase, so this liner was turned to just have a 4mm lip at the top for location.



Next to start on the water jacket and make a hopper.