Knocking noise - continued from thread on old site

[Easy Rider 13]

I get a weird knocking noise but it only comes when i change gear, i have a feeling its the fact my friend put a rear hugger on it.

Usually when i change gear at steady speeds or i hit a bump or pothole.

im kinda guessing its just my chain knocking against something, i'll figure it out when it throws me off one day  :eek