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Graham, is this flywheel much larger in diameter than the 11" one shown on the retlas drawings?Jo what was the reason you had to drill at such a slow speed? that may have been what you chose for the rim but would have thought you could wind up the wick for drilling and boring as clamping looks reasonably well balanced.
Then again I do tend to turn my flywheels quite fast, usually around 250m/min but make sure they are held securely
Quote from: Jasonb on August 25, 2021, 07:21:02 PMThen again I do tend to turn my flywheels quite fast, usually around 250m/min but make sure they are held securelyI would like to see you try mounting that flywheel on your lathe and spin it at that speed. I reckon when you turned it on it would take a large lump out of its bed Jo
I'd actually need to cut a hole in the bed BEFORE turning it on as 11" is my max diameter
It is in industry where speed matters at home we can take our time and do things less stressful.
Those with variable speed hobby lathes will know that the torque drops off as speed is reduced and this becomes even worse as the diameter of the part increases. It is for this reason that using carbide and running the lathe faster than the "lowest backgear" favored by the old Myford stalwerts method is a far better option as it allows the motor to run at a better speed not only increasing torque but also increasing airflow from the inbuilt fan which saves the motor getting too hot which it would running dead slow under a lot of load and maybe even getting stalled.
Those with variable speed hobby lathes will know that the torque drops off as speed is reduced and this becomes even worse as the diameter of the part increases.