Originally Posted by
Ron Damon
The FSIR Spin 5 has rack eyelets on the chainstays, chainstay bridge and seat tube. The chainstays, indeed the whole bike gives no flex, sorry.
Good to know. Yeah, it's hard to have chainstays like that with bending flex, without fatigue issues, hard enough with steel, but impossible with aluminum, the latter needs to be designed stiff to be durable. My road race bike is a relatively early aluminum, ultra stiff. Only in later years have I come to understand the appeal of those old handmade lugged steel race frames, in terms of ride.