Gauge 1 Steam Locomotive - Wheels and Frame.


 

 

 

 

 

 

 

 

 

 

The main locomotive frames and the front bogie frames were all parts supplied in the kit of laser cut parts from Model engineer's Laser.

The kit also included some of the motion gear, and the tender frames - a good investment.

The bogie frames were silver soldered together and bushed with bronze bushes to take the 6mm axles.

The wheels were machined from castings supplied by Walsall Model Industries. The rims were turned to the Gauge 1 standards and to the diameters marked in the plans.

The wheels were Loctited to the shafts to holed there position. All in all a neat simple assembly to produce

 

 

 

 

 

 

 

 

The locomotive frames were supplied with the correct profile and with many of the drill holes marked by the laser. These holes were opened out to the correct size given by the plans.

The locomotive frame assembled

 

A stand-off was machined from 6mm steel rod to set the frames 30mm apart. This was secured to the frame using 2 counter-sunk 8BA screws.

               

The buffer beams were cut from a length of 12mm brass angle. The sprung buffers were supplied by Walsall Model Industries and brazed in place.

The 2 buffer beams and the front bogie support plate were also brazed to complete the frame.

 

 

 

 

 

 

 

 

The axle blocks were machined from a piece of square brass bar. The slots in each side were cut with a 2mm slot drill in the milling machine. The hole was drilled and reamed to 6mm diameter.

               

The axle block support was a piece of 6mm brass angle cut to length and with one section milled out. The holes were drilled and counter sunk to take some 8BA screws.

A piece of rod was cut with an 8BA thread to locate the spring which was cut from a length of stainless coil.

               

The main driving wheels were turned to the Gauge 1 standards and reamed with a 5mm reamer. The spokes were painted satin black before the final machining to give a neat finish.

The crank pin holes were drilled and tapped 5BA.

The axles were 6mm in diameter and were reduced to 5mm to suit the wheels. Two of the wheels had a axle was Loctited in place.

               

The eccentrics were machined from steel bar. There were two parts to each assembly (the eccentric and the stop collar) to allow the locomotive to reverse.

The eccentric straps were made from a piece of brass bar bored to suit the eccentrics and with an arm soldered to connect to the rocking shaft. The straps were not of the split type so would only be removable by removing a driving wheel and sliding out the axle.

               
               
               
               

 

 

 

 

 

 

 

 

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