A warning to those looking to mod their motorized bicycles:

Most, if not all, of the hacks and mods featured on this site were made by individual hobbyists. If you are new to working with 2-stroke bicycle engines, please by aware that there's a possibility that a mod featured on this site could seriously damage your engine. Please don't try any mod from this or any other site unless you fully understand what you are doing. The owner of this blog will not be held responsible for both material and bodily damage caused by performing a modification featured on this blog. Also remember that opening up your engine may void your warranty!

Wednesday, August 17, 2011

Easiest chain tensioner mod ever

There are plenty of great chain tensioner mods out there which involve spring-loading and usually involve building an entirely new tensioner all-together.  But this is the easiest tensioner improvement I've seen.  Keep the stock tensioner, but add a spring and a few small parts to keep the tensioner in place!  May need drilling if your frame isn't the same, but this shows that it really doesn't need to take a lot to improve your tensioner!


  1. Wouldn't the spring need to pull the idler wheel upward though?

  2. According to the guy who made it, it's mostly to keep the tensioner from going forward and going into the spokes. It probably provides some extra tension by pulling the tensioner towards the back. It wouldn't compare this mod to other spring tensioner mods, but in my opinion, this is how the tensioner should have come in the kits.

    Honestly, I'm still using the stock tensioner with no problems. So merely putting a spring on it can certainly help, I'd think.