Our 2007 OSET 16 24V has seen a bit of use now and has had a few electrical component issues along the way, but has been quite sturdy mechanically until the drive pin for the motor sprocket sheared recently.

My 21kg son was riding in a manner I consider quite normal at the time, practicing crossing timber railway sleepers on a gentle uphill slope.

I know it is quite a simple job to replace the drive pin, but am wondering if it is a common failure or not, to help me decide whether I should use a different type of drive pin or the same again. The drive pin that it came with from new is a 3mm diameter steel roll pin.

Hi.i have had this happen several times now with my sons 16.I did try other means but have just gone back to standard rollpin as seems to last longer.

Thankyou. I'll stick with the roll pins

I bought the first 16.0 24v that OSET put out. Have used the hell out of it. When it sheared, I was not aware. It was still working and I could not figure out why the front sprocket had migrated toward the motor, so much so the chain wore a groove into the side of the casing. I took it apart and replaced the sprocket and pin. However, I unecessarily took the motor apart and put the magneto back together backwards, so that the bike ran in reverse. I re-assembled, but then the motor was not as fast as before, maybe the contacts were damaged, as its tricky putting it back together. So, I just received the 36v swingarm today (I was already mouting a 3rd battery and running the 24v as a 36v). Long story short, I am running the chain tight now as I suspect loose chains produce pin pains. I.E, the slapping of a loose chain can act as a type of lackhammer that shears the pins.

Sheared pin happened to me. I dumped the pin,tapped the sprocket and now use a set screw with some thread lock on it. Easy fix too.