Originally Posted by
chadteck
Oddly enough, I was just wondering this myself. I don't seem to notice any flex on my bike on the road, but on the trainer I can see the bottom bracket moving if I'm in a big enough gear. It can't be good.
Originally Posted by
roadwarrior
Looking down at your bottom bracket while riding on the road?
Exactly. your bike is flexing the same on the road, you just don't have a fixed reference point to guage it by, and you're not staring at the bb.
In many ways, riding the trainer puts less stress on the bike, i.e. you're not hitting potholes at 25mph.
The only significant worry about the bike on the trainer is sweat. Make sure you wipe the bike off when you're done.