Bur­rell Spe­cial Scenic show­man’s road lo­co­mo­tive

The Shed - - Scale-model Steam Engines -

Win’s award-win­ning Bur­rell Spe­cial Scenic show­man’s road lo­co­mo­tive has fea­tured in Aus­tralian and English model-en­gi­neer­ing mag­a­zines and been com­pared to the 1921 Lord Las­celles, re­garded as one of finest on the UK rally cir­cuit. The four-inch (103mm) model of the early 20th-cen­tury English trac­tion en­gine is about eight feet long, or one-third full­size, and took Win around 5000 hours over six years to build.

“I got a set of draw­ings out from the UK but there were quite a few mis­takes in them which was frus­trat­ing,” he says. He also re­al­ized that it was go­ing to be a mam­moth task in­volv­ing mak­ing 86 wooden pat­terns be­fore con­struc­tion even be­gan.

He started off with the wheels, fitting spokes to the cen­tre cast­ings be­fore at­tach­ing rolled rims to the strakes and send­ing the wheels away to be rub­bered. Af­ter ma­chin­ing out the front and rear axles, he got to work on the boiler, which was con­structed to SGS M&I (Gen­eral So­ci­ety of Sur­veil­lance Ma­rine and In­dus­trial) cer­ti­fi­ca­tion stan­dards. Win had the bar­rel plates rolled and welded be­fore form­ing the tube plates, which in­volved drilling holes for the 18 tubes to be in­serted. Once the fire­box and stays had been formed and the ten­der bolted on, he set to work on the horn plate, rolled and fit­ted the smoke­box, cast the cylin­der block, and at­tached the pis­tons and rods.

Win un­der­took all the mo­tion work him­self, fab­ri­cat­ing the three-speed gears along with the fi­nal drive and dif­fer­en­tial in his work­shop. The big­gest ma­chin­ing job on the trac­tion en­gine, apart from the cylin­der block, was the crank­shaft. This was made out of a hulk­ing piece of 4340 high-ten­sile steel, six inches round and 28 inches high (154x718mm), lath­ing it down from each end as it was too heavy to lift off the floor. At the other end of the scale, he hand-filed the small bronze bell af­ter form­ing the outer shape on his lathe, and used a reg­u­lar cross-hatch wood file to im­print the tread on the step. Once the crank­shaft and bear­ings were in place, Win rolled the chim­ney, fin­ish­ing it with a brass rim, and at­tached the gauges and sight glasses.

One job that needed a lit­tle more con­sid­er­a­tion and help from his son, Mark, an elec­tron­ics ex­pert, was how to

Newspapers in English

Newspapers from Australia

© PressReader. All rights reserved.