In use I have made three changes: - Remove the crutch that hooks protruding obstacles - Replace the bearings with ABEC5 ABEC9 to improve the slides (not significant) - Replace the rear wheel tire with a full wheel, the pair of hudora 205 is very affordable (very efficient). Result: - A scooter which the handlebar does not vibrate (coarse tar, gravel, cobblestones) thanks to the tire wheel - At full speed pass obstacles under 1cm high, full rear wheel goes "against her will" do not tempt fate, this remains a scooter ... - A properly inflated tire at the front, a rear disc wheel ensures a satisfactory glide. - 2nd tire wheel becomes a spare wheel (no punctures to date) + 2nd disc wheel - The rear fender brake is not yet cracked or broken
only one problem: a little game on the management after a year which makes up by tightening the bolts ...