Thanks for the responses. 🙂 I’ve just checked the chain ring bolts and they’re tight…hadn’t thought of that. I’m pretty sure it isn’t the pedals as the noise occurs when putting power on either side and they are tight with no play. I also had this crank/pedals on my old frame and the noise wasn’t there at all and has only developed since building the new frame – was fine for the first half dozen rides.
When I say I can feel it through the pedals it’s like it is reverberating through the frame and cranks, if you know what I mean. I built the bike up myself, admittedly without owning a torque wrench, so I’m pretty sure the cassette is on tight and everything is greased up properly. Crank got fitted with rubber mallet and I preloaded the crank with the shimano tool.
I can sometimes replicate the creak if I place a sideways load on the BB area and flex the frame slightly. Could it be coming from a dry bearing or something in the frame? Not sure how likely that is.
Again, thanks for all your help so far.