Pure mechanical work expended (disregarding thermal efficiency and BMR). For bikes this can be regarded as a measure of chain wear - a standard bicycle chain will last about 100 MJ, for motorcycles about 1 GJ.
Hreint vélrænni vinnu sem varið er í þessa starfsemi (sé ekki tekið tillit til hitauppstreymis og BMR).
For bikes this can be regarded as a measure of chain wear - a standard bicycle chain will last about 100 MJ, for motorcycles about 1 GJ.