+1 stick to what has been proven to work DA, Surly, Phil, EAI. The last thing i would want to be experimenting on is your cog, lockring or chain for that matter.
The only advantage of Alloy is the low weight- good for the velodrome perhaps. Steel is MUCH more durable. Sprockets and cogs in machinery are usually made from steel for a reason…
weight is certainly not an issue on this bike.It’s a PG Cro Mo Shogun frame with a tangaloy fork.Hardy and durable for a beater is my aim.
Steel it is then I’d say.
These guys make shit out of aluminium because it’s quicker to machine and easier on their tooling, and doesn’t require surface treatment afterward. Not because it’s the best material for the application.