New Drive Roller for the Bike Bug Sears Bike скачать в хорошем качестве

New Drive Roller for the Bike Bug Sears Bike

In this video I’ll be swapping the drive roller on my “Bike Bug” engine for a new one, and one that has a larger diameter. This should result in taller gearing and lower RPM at cruising speed. Plus I now have a roller for each of my two motors now, instead of a single one. I’ll also conduct a short experiment to test the gearing change as well. Hope you enjoy and thanks for tuning in. Video Chapters : 0:00 - Intro & Explanation 3:49 - First Test Run 6:55 - Swapping Rollers 12:50 - Second Test Run 14:21 - Results and Closing ** EDIT, NOVEMBER of 2025 : ** Every so often I get asked about how I made these drive rollers. I can’t really do a video since they are already made, so I am adding this description to hopefully give the best, most detailed instructions that I can : I got my skateboard wheels from eBay. You can find them in many different sizes. It doesn’t have to be an exact size skateboard wheel. As mentioned in the video, the larger the outside diameter, the taller the “gear” ratio (faster at lower rpm). My white one is 50mm and the green one is 55mm. You can’t go too much larger or the roller won’t fit inside the plastic fender (unless you want to leave it off). The softness does matter some as well, since the softer the better for more traction. As for the width, the wider the better but it also doesn’t need to be an exact size. As long as it fully contacts the tire. Mine are both around 3.5mm wide. I wouldn’t go too much narrower, especially on cruiser width tires. Lastly, The inside diameter will have to be drilled out to fit over the original metal hub, once the old rubber is removed. It may sound daunting, but it’s not too bad. Just secure it in a vice and use a large stepper drill bit to bore it out, keeping it centered, until it fits onto the hub… not too tight but not too loose. Then, apply some 2-part epoxy to the hub and press the skateboard wheel over the hub. If you don’t use epoxy it will walk off when you ride it (ask me how I know). Be sure to clean the hub well first. Also be sure that no epoxy gets on the driving surface of the wheel. A good idea is, if you order a 4-pack of skateboard wheels instead of just one, you will have backups in case something goes wrong. Sorry, a lot to explain, but that’s the process I went through to make mine. Hope this helps! Some Tags : Bike Bug TAS Spitz Sears Free Spirit Tanaka engine motor