For background, please see the previous thread on the two barn finds. To recap, the engine has a Vale-Onslow aftermarket barrel, and unknown, possibly a Hogan head. They appear to be more scrambles than trials items. It is fitted with a 26mm Concentric, which is rather small for the manifold.The bore is at + 0.020", with no apparent wear. I have yet to check the rings in the bores. The piston is very different to the Villers one, the crown to gudgeon pin being much closer on the VO piston than the Villiers; see pic.
Having removed the head and barrel, I was pleased to find an Alpha full-circle crank, with no apparent big end play, and crank running smoothly in the main bearings. I think it has a 5 1/4" rod, but will have to remove the piston in order to get a more accurate measurement.
Removing the points cover revealed nothing! No points assembly, and the inner casing cut away. Removing the casing revealed more of a surprise, as the flywheel was not a Villiers one, with an outer plate held in place by 4x counter-sunk allen screws. A shiny set of points were visible behind the flywheel, accessed by slots in the flywheel. I undid the screws, but they won't come out, presumably retained by nuts, so the outer plate will not come off. I shifted the centre nut with my Villiers Hammer-tight tool, but the nut just spun off; so not an extractor nut then! This leaves the dilemma of how to remove the flywheel?
Does anyone recognise this set-up, and can say the best method for flywheel removal? All info gratefully received. See pics.....
I think this engine has not revealed all it's secrets yet!
tbc
Having removed the head and barrel, I was pleased to find an Alpha full-circle crank, with no apparent big end play, and crank running smoothly in the main bearings. I think it has a 5 1/4" rod, but will have to remove the piston in order to get a more accurate measurement.
Removing the points cover revealed nothing! No points assembly, and the inner casing cut away. Removing the casing revealed more of a surprise, as the flywheel was not a Villiers one, with an outer plate held in place by 4x counter-sunk allen screws. A shiny set of points were visible behind the flywheel, accessed by slots in the flywheel. I undid the screws, but they won't come out, presumably retained by nuts, so the outer plate will not come off. I shifted the centre nut with my Villiers Hammer-tight tool, but the nut just spun off; so not an extractor nut then! This leaves the dilemma of how to remove the flywheel?
Does anyone recognise this set-up, and can say the best method for flywheel removal? All info gratefully received. See pics.....
I think this engine has not revealed all it's secrets yet!
tbc
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