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ISIS Overdrive
From WikiPedalia
Sheldon Brown's Bicycle Glossary · letter I-L
← ISIS (International Spline Interface Standard) · Italian →
← ISIS (International Spline Interface Standard) · Italian →
ISIS Overdrive is an oversized standard for bottom bracket mounting to the bicycle frame. It uses a larger diameter thread, 48 mm instead of the ISO standard 1.37" (just under 35 mm.) Shell width can be either 68 or 100 mm.
The use of the ISIS Overdrive mounting dimension does not specifically require the use of ISIS splined cranks, but that is the usual configuration.
