Originally Posted by
bmthom.gis
I have a '72 Suburban. It likes to go slow. It takes a good 1/2 mile to stop, though that is my fault because the brake pads need replacing. Even with good pads, I am not sure I would want to take that bike for a fast spin
I would definitely suggest upgrading brakes on any motorization project. In the case of Suburbans (or other similar vintage bikes), I would add Tektro long reach nutted dual pivot brakes (I forget the model number, but they still make them) and wheels with aluminum alloy rims as part of the motorization project. It would have to be checked whether the brakes could reach 700c wheels on the bike, but I suspect it would, and if not, a few 27" wheels are available.
I also would never ride a motorized bicycle faster than I would ride it under my own power on flat ground.