Been running without one for ages. Just stock front rim brake, swapped to operate with the right hand (my dominant hand) lever. Now that Ive motorized (48 or 49 or whatever CC) I want to upgrade the front to disc brakes for safety. Should I even bother getting a rear brake on there again - and if so, is it worth upgrading that to disc as well, or just run stock in the rear and disc in the front - first post BTW - and an instantly addictive hobby motorbicycling