The Diary of the Building of a Driving Trolley

Driving Trolley build Truck 1 Truck 2 Truck 3 Truck 4 Truck 5

Truck 6 Truck 7 Truck 8 Truck 9 Truck 10 Truck 11 Truck 12

Truck 13 Truck 14/15 Truck 16 Truck 17 Truck 18 Truck 19 Truck 20 Truck 20/21

Truck 22 Truck 23 Truck 24/25 Truck 26 / 27 / 28 / 29 Truck 30 / 31 Truck 32 Light flasher

Baudot rebuild Index page

Construction Day 9

Only an evening of engineering to day !!!

Originally I thought that I would need the support that I made but after using is for the first cut I decided to see if the alignment was good in the tube with the revolving centre alone and it was so all the other cuts were made using only the revolving centre.

Max depth of cut was 0.5mm

All the wheel supports came out to 119mm to -118.9mm and i am happy with that tolerance.

Here the lathe is set up to bore the recess for the wheel bearing it is 8mm deep and a nice fit to the outside of the bearing housing.

Two wheel blanks completed the next stage is to fit to an arbor and turn the treads and flange accurately.

The process for changing the wheel blanks into wheel so far carried out is as follows:-

  1. Use the slower speed of the lathe as there is drill ing to do and it will save the need to keep changing the drive belt position
  2. Mount the wheel blank in the lathe in the 3 jaw check with the alternative jaws.
  3. Turn down to an overall thickness of 17.5mm
  4. Mark the machined face with a circle or 35mm diameter
  5. Turn down the wheel to this mark until it is 16mm thick
  6. Centre Drill
  7. Drill through 3/8"
  8. Drill through 19mm
  9. Bore out to a depth of 8mm 28mm diameter
  10. Remove and put aside until able to machine all the remaining cuts to make the flange and tread etc.

If you have any comments / questions about the project then please email me ...