Old 05-20-20, 06:44 PM
Senior Member
Join Date: Sep 2005
Location: Michigan
Posts: 3,099

Bikes: Trek 730 (quad), 720 & 830, Bike Friday NWT, Brompton M27R & M6R, Dahon HAT060 & HT060, ...

Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 573 Post(s)
Liked 145 Times in 117 Posts
It seems that I am using the rule of 4T more for the guard than the largest ring. Note that these guard rings are relatively heavy. A lighter option would be a ring that meant to work with a plastic guard, if you can find one in your desired size. As to to a dedicated guard for single vs double crankset, it might be the issue of space for the crank. (When necessary you could always trim the ring on your own.) It could be also an issue of mounting bolts, but they mention none in their offer.
2_i is offline