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Scilly.Suffolk
@Smallfurry
Also interested.
Although the plan was to get 110bcd QXL in 52/36.
You need to consider the whole Picture. Not just the chainring. The lengths of the eclipses on the chainring may be the same length. But there is considerable difference in the length to the sprocket and back With the difference in angle through the pedal stroke. Hence the non constant Chain tension.