A development of his highly popular "Simplex" design - a mainstay of club motive power since it was introduced in 1967 - "Super Simplex" featured a larger, higher working pressure boiler, up from 4 3/4 to 5 inch diameter; a longer wheelbase, and slightly bigger cylinders, up from 1 1/2 to 1 9/16 inch bore. Some engines - this one included - were fitted with a shorter chimney giving a purposeful, powerful appearance - rather attractive to our eyes.
The commercially made CE-marked boiler by Blackgates Engineering has had a twice working pressure hydraulic test with new certification issued for 110psi working.
| gauge | 5 inch |
| length/inches | 33 |
| width/inches | 10 |
| height/inches | 14 |
| weight/kg | 51 |
| wheel material | cast iron |
| axlebox type | plain bearing |
| cylinder material | cast iron |
| valve type | slide |
| valve gear | Walschaerts |
| reverser type | scew |
| injector(s) | 1 |
| boiler number | BG190 |
| year built | 2010 |
| boiler maker | Blackgates Engineering |
| CE mark | yes |
| working pressure/psi | 110 |
| boiler type | locomotive |
| boiler material | copper |
| boiler construction | silver soldered |
| hydraulic test valid to | 29-May-2028 |
| fusible plug | no |
| safety valve(s) | 2 |
| safety valve type | spring |
| mechanical pump | 1 |
| hand pump | 1 |
| steam pump | 0 |
| whistle | yes |