Originally Posted by
rosefarts
I've definitely heard of filling the top part of a steerer with epoxy. I haven't heard of epoxying a smaller steel pipe in. Seems like it would be perfect actually. The weight penalty would be pretty minimal. Probably best to find a friend with a lathe to create the perfect fit.
This comes to mind
Zinn Cycles::Big and tall bicycle forks Woundup https://share.google/es9EeJRU2XhvwZn0x
No personal experience with it and you would need the appropriate steerer ID.