Yes that has been the everlasting problem, I've been told that chain cases did not exist for the large chainrings I chose, and frame clearance not enough either.
And it's hard to make from scratch, one solution could be modifying an existing, if any avail.
As a better-than-nothing I hung a large epdm flap at the back of my front fender, and mounted near the bottom bracket a cover between the rear wheel/tire and the chain, because I noticed alot sand was deposited there.
All to protect the chain as much as possible.
It already proved itself as a serious improvement, alot less sand/mud on the chain.
Only trouble is in the case of wind that blows up sand clouds in the summer or road salt in the winter. Especially salt is a chain destroyer. Corrosion in a matter of hours, I had once a KMC Z1X stainless steel chain, but the pins of the links weren't stainless, and after wind blew up road salt, pin ends corroded so severely that the chain just felt off the sprocket while not pushing just slowly hobbling over bricks.
And it's hard to make from scratch, one solution could be modifying an existing, if any avail.
As a better-than-nothing I hung a large epdm flap at the back of my front fender, and mounted near the bottom bracket a cover between the rear wheel/tire and the chain, because I noticed alot sand was deposited there.
All to protect the chain as much as possible.
It already proved itself as a serious improvement, alot less sand/mud on the chain.
Only trouble is in the case of wind that blows up sand clouds in the summer or road salt in the winter. Especially salt is a chain destroyer. Corrosion in a matter of hours, I had once a KMC Z1X stainless steel chain, but the pins of the links weren't stainless, and after wind blew up road salt, pin ends corroded so severely that the chain just felt off the sprocket while not pushing just slowly hobbling over bricks.
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