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Todays tasks have been plating the carburettor parts, throttle lever,rebuilding fuel tap and reassembling carb. The slides of the carb were originall quite worn and a sloppy fit in the body, by plating the body and main slide with Nickel it has now restored the slide function to a neat sliding fit in fact I had to rub the slide down a bit with 1200 grit. Useful tip if you have a worn carb. loose fitting slides give rise to lumpy tick over or poor slow running. I am very pleased with the results of my nickel kit, I have tried to achieve a sensible balance between retaining an element of the patina of age whilst restoring the original finish so nothing is too shiny and some of the dings and scratches remain.
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Yesterday I sandblasted the kettle because it was black and very dull. Today I set up my nickel plating kit and spent a lovely time sitting in a comfy armchair watching molecules swap over. Chuffed with the results the sand blasted fuel filler bowl from the carb has come out a dull finish ( what I wanted ) and the de compressor lever has come out shiny ( also what I wanted ) I tried to buy a new lever but could not find one identical. My ethos has been if I could recover an original part then I would, this lever was corroded to B ——-ery but after an hour with my power file dremel and some 1200 wet and dry it looked half decent. The main carb. is in the tank as I write.
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Yesterday I sandblasted the kettle because it was black and very dull. Today I set up my nickel plating kit and spent a lovely time sitting in a comfy armchair watching molecules swap over. Chuffed with the results the sand blasted fuel filler bowl from the carb has come out a dull finish ( what I wanted ) and the de compressor lever has come out shiny ( also what I wanted ) I tried to buy a new lever but could not find one identical. My ethos has been if I could recover an original part then I would, this lever was corroded to B ——-ery but after an hour with my power file dremel and some 1200 wet and dry it looked half decent. The main carb. is in the tank as I write.
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Here a few pictures of a JD that ploughed at a match at banbury in 2011 with a brindley plough it did quite a good job.
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Bit of a set back but sorted now. The tine rotor shaft had lots of lateral play and a fair bit of up and down movement so off came the side plate to reveal a bit of devastation. At some point the solid pin securing the bronze worm gear to the shaft had worked loose and while sticking out of the gear had clouted the housing and broken out a chunk of the gear boss. The chances of finding a new gear are pretty slim but talking it over with forum member Hillsider he suggested a couple of possible work arounds, one of which was to drill a new pair of pin holes in the gear. This done, we have a serviceable machine for exhibition purposes and perhaps a bit of light tilling.
I’ve secured the gear with a roll pin and a tight fitting solid pin inside it. To make sure that neither pin can drop out I’ve modified a Jubilee clip to go round the Gear boss. There was some wear on the bearing areas of the rotor shaft so as I had a bit of inch diameter bright steel bar it was a fairly simple job to make a new one and two new oilite bushes and seals completed the job.
Don’t suppose anyone has a bronze gear for a Rotogardener ?Attachments:
Progress with the Shay. Have now done a permanent installation of a Briggs and Stratton condenser to replace the dud original and the engine runs well.
The outstanding job concerns the tine engagement mechanism which is a swinging jockey pulley controlled by a solid rod from the red knob in the centre of the handle bars that passes down inside the handlebars and fuel tank and emerges just short of the engine and then forward to connect to the swinging arm. Unfortunately the person from whom I obtained the machine had unbolted the handlebars without first disconnecting the rod which, as a result, was badly bent out of shape.So far my attempts to reshape it have not resulted in a free moving jockey arm. As it’s probably not my intention to keep the machine I may leave it for someone else to sort out as I’m more interested in mowers and have just retrieved a Ransomes Antelope from Southampton!The images show the BS condenser in place and the dud Shay one that it replaces.
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Today I have been restoring the carburettor which is a brass cast Amal, nickel plated. Over the years it has been bruised and bashed and had a number of nasty vice marks. I polished these out with my Dremel but did not like the shiny finish as the original would have been peat flour sand cast. After a bit of thought I dug out some brass plumbing fittings and polished them up with the Dremel and then shot blasted them with glass beads to see what effect it produced. Very pleasing effect and by a strange coincidence the carb is stamped “JC 648” must be an omen! Next job is to Nickel plate it .
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