I get teased every time I open my mouth.
. Truth is, you guys, when you actually do the efficiency analysis of the Bafung vs time in a real world test bed you do see a drop off in efficiency. It is not that the motor fails - just it become less efficient. This is not the case if you use harder cog materials. We have been working on our bikes to maintain efficiency, and to do that we end up with the noise. Now I would stress this is a small increase, but subjectively noticable.
The reference to Panasonic and Bosch was an earlier post regarding the comparative noise of the two products.
We could go with the noisier Bafung motor - it is cheaper than our Spanish designed and built ones - but we prefer to maintain medium (2 to 3 year) high efficiency. The cost is noise....
And sorry about my spelling!
My question is - does noise matter?