BigBen.
Bromptons and other titchy wheels (I used to have a thing for Moultons and still have a Brommie) have less length of bead to 'give' when you pull on it, and the difference between berad diameter and rim outer diameter is proportionately greater (the depth of the rim wall is a bigger percentage) so you have to pull it over the equivalent, on a big wheel, of a massively deep rim flange.
I know that made f*** all sense, but its bin a long day.
BigBen.
Bromptons and other titchy wheels (I used to have a thing for Moultons and still have a Brommie) have less length of bead to 'give' when you pull on it, and the difference between berad diameter and rim outer diameter is proportionately greater (the depth of the rim wall is a bigger percentage) so you have to pull it over the equivalent, on a big wheel, of a massively deep rim flange.
I know that made f*** all sense, but its bin a long day.