Tom, how about using an old chainring with the teeth ground off?Won't be as durable as a purpose-made guard, but should do the job, be easy to get hold of and cheap as chips.
@Bearlegged started
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Tom, how about using an old chainring with the teeth ground off?Won't be as durable as a purpose-made guard, but should do the job, be easy to get hold of and cheap as chips.