7bmwm3gtr

I'm actually using my "beater" bike outdoors for my base miles and my main road bike for the trainer.

My "beater" bike has a triple chainring so that 30t really helps me stay under Zone 2 on climbs. It also has a 52t which helps for training Force.

My main bike has the cadence sensor so I Use it on the trainer for trainer drills. I also used it on the trainer for a 2hr spin yesterday because it rained. It has a trainer wheel so I'm fine with using it.

I will be honest--I like using my heavier beater bike for the long winter miles because once I get back on my lighter main bike I get that perceived new bike feeling.

Breathegood

I am not comfortable putting my carbon road bike on the trainer. I use an older aluminum road bike that is the same size, but a slightly less aggressive fit/geometry on the trainer. Through the winter months, it's dedicated to the trainer. In the summer, I use it as a commuter/grociery bike.

unterhausen

I really messed up a paint job on a steel bike riding it on the rollers. My current roller bike has an old t-shirt draped over the handlebars.

Lew.

I have used both my track and road bike on the turbo, but it doesn't clamp the resistance unit to the wheel, the weight of the rider/bike is all that loads the rear wheel. And considering the force applied to the skewer (from the turbo's frame) isn't applied to the frame, I'm happy to use any bike on the turbo. Worst case I have to buy some new track nuts for £3, although they're yet to show signs of damage.
Same goes for the rollers, except no unnatural force to the skewer is present.
And because I'm so lazy and can't be bothered to swap wheels everytime I go on the turbo/road I even use my 'best' wheels unless it's outside and it's going to rain. Worst damage I've had so far is some slight squaring of the rear tyre which I can't notice on the road/track yet.

As for dealing with sweat - I just put an old t-shirt in my bottle cage, and wipe as necessary.

rpenmanparker 

Avoiding using a best bike on a trainer is of no value. There is nothing about a trainer thst is harder on a bike than the road is. With the exception of sweat that is. Front fork fixed or not makes no difference and there is no damage to headset or fork. Even with fork fixed the bike can swivel to relieve stresses. Just catch the sweat and you can use any bike you want on any kind of trainer.

itrsteve

Not my "nice" bike, but one that is pretty identical and that I still ride on the road. I do use the Conti Hometrainer tire though, absolutely critical.