Nothing wrong with the set-up: just done the same to turn a friend's Halford's POS into a usable "lock-up and leave" bike.
The QR almost certainly snapped because it had been over-tightened over a period of time: it shouldn't require the amount of force you see most people using, to open and close.
Flip the lever shut and use the nut to take up the slack, then open the lever and give the nut another quarter/half turn. Don't forget to give the spindle a wipe of oil or grease: it's damp and shitty inside the axle.
Any enclosed cam QR will do: whatever your LBS has from Shimano.
If you find the wheel slipping, rather than over tightening the QR, try roughening the dropout.
Nothing wrong with the set-up: just done the same to turn a friend's Halford's POS into a usable "lock-up and leave" bike.
The QR almost certainly snapped because it had been over-tightened over a period of time: it shouldn't require the amount of force you see most people using, to open and close.
Flip the lever shut and use the nut to take up the slack, then open the lever and give the nut another quarter/half turn. Don't forget to give the spindle a wipe of oil or grease: it's damp and shitty inside the axle.
Any enclosed cam QR will do: whatever your LBS has from Shimano.
If you find the wheel slipping, rather than over tightening the QR, try roughening the dropout.