SRAM (Sachs) was not the best hub around,all these hubs needed REGULAR weekly lubrication if you rode a lot. You were hearing the itty-bitty gears in there grinding themselves into abrasive dust.The Shimano hubs are the best in my opinion,they have a special lubricant.The SA hub had weaknesses too,that the British did nothing about.They initially do a brilliant job on something or other, pushing the envelope, and then proceed go into a coma for a few decades or more,during which they are put out of business.