I just bought a blackburn trakstand fluid trainer, and after about 10 minutes, the resistance increases substantially and then everything starts to vibrate. This comes and goes for a while and then disappears after 20 minutes. It's smooth once again after that. Kind of annoying.
Question is, do all fluid trainers behave this way? I wrote blackburn and they said the fluid needed to 'warm up'. Call me crazy, but I'm already nice and warmed up after 20 minutes. If I go for an hour, that means a third of my training time winds up being quite variable.
Is blackburn blowing smoke up my arse or is this just normal for fluid trainers???