Begin by macerating the fruit. Add half of the apples, grapefruit, lemon, blood orange and pears to a large pitcher and squeeze the lemon juice on top. Muddle the fruit using a wooden spoon. Add the remaining half of the fruits. Pour over the red wine, grappa, orange liqueur and stir. Cover with plastic wrap and place in the fridge for 2 hours, or overnight if time allows. Add the orange juice and simple syrup, and then top off with the chilled club soda before serving.