I think this must be the nicest Suffolk dredging tractor we've ever had, a combination of a good quality build, an interesting variation on a thoroughly practical design and a really well-sorted engine make it a delight to drive.
Originally serialised in "Model Engineer" magazine in the early 1980s by John Haining - well known by that time for his ploughing engine and tackle designs, along with the Durham & North Yorkshire agricultural engine - the Suffolk dredging tractor made up to a good-sized engine in 3 inch scale. Went surprisingly well too, with a twin cylinder double high engine giving instant starting with no dead centres to worry about, coupled to a free-steaming coal-fired cross-tube boiler.
I particularly like this one which has forsaken the "Robot Wars" type back end with ground anchor and heavy duty winch for a short bed wth wood decking, the whole thing running on rubber tyred steel wheels. With well-placed footrests slung forwards and low down, it makes for a comfortable driving position.
We all had a go on this one last week, finding out, to general amusement, that you could make a circuit across the yard, in through the boiler shop, across unit 17, through into the main workshop and then back out. I'm told Connor posted fastest lap of the day - there's some video of his practice lap here.
| scale | 3 inch |
| length/inches | 42 |
| width/inches | 25 |
| height/inches | 30 |
| weight/kg | est 150 |
| cylinder material | cast iron |
| valve type | slide |
| valve gear | Stephensons |
| injector(s) | 1 |
| boiler number | 265JWR |
| year built | 1999 |
| boiler maker | non-commercial |
| CE mark | n/a - pre-2002 |
| working pressure/psi | 80 |
| boiler type | water cross tube yorkshire |
| boiler material | copper |
| boiler construction | silver soldered |
| hydraulic test valid to | 18-Mar-2023 |
| steam test valid to | 18-May-2020 |
| fusible plug | no |
| safety valve(s) | 2 |
| safety valve type | spring |
| mechanical pump | 1 |
| hand pump | 1 |
| whistle | yes |