Why doesn't anyone make steel cranks? I've done a pretty extensive search and most cranks (even the ones at £300 - £400) are made from aluminium. Surely steel would not be susceptible to this kind of 'shear' failure?
Either spend a lot of time trawling bicycle jumble sales and find some old road cranks (you may also need to find a cottered bottom bracket) or see if you can fit some BMX cranks to your bike.
Why doesn't anyone make steel cranks? I've done a pretty extensive search and most cranks (even the ones at £300 - £400) are made from aluminium. Surely steel would not be susceptible to this kind of 'shear' failure?