I'm trying to get back on my bike after some failed attempts at recovery from a herniated disk (PT's told me to stop riding but I just got worse anyway so now I'm trying to come back). I bought an upgrade to my magnetic trainer - a nice fluid one that's supposed to give better training, or so I heard.
So far I've been laying in the low gears and just keeping cadence high. Everything was fine, nice smooth ride. I can go 20-40 minutes just fine like that. But if I try to push myself a little bit by increasing the gear speed the trainer suddenly hits a wall and starts vibrating. It's really loud, like those buzz strips on the side of the road. Starts to pedal like I'm riding through snow or mud. I also have to tighten down the contact bar thing pretty tight to keep the tire from just squeeking.
Once I do this it pretty much kills the workout. Even dropping back down a gear or two doesn't make it go away. It's like the fluid gets too hot or something and it just doesn't perform as well.
Is this normal for a fluid trainer?
Further attempts to find the correct google incantations yielded some other people complaining about the same thing wrt the trainer I have, a Blackburn Tech Fluid. Still interested in more knowledgeable answers though...sometimes people just complain and don't know wtf they're talking about. Descriptions are very much like what I'm experiencing though: