Turbotraining and frame fatigue

I've always felt that mounting my bike on a turbotrainer and hammer away indoors in the winter would be harder on the frame than normal road riding, but the always thorough German TOUR-Magazin has done some testing and found that it is actually less stressful for the frame to be used on a turbotrainer than on the road. I'm surprised, but the numbers are quite clear.

Speaking of turbotrainers; back in mid-november I ordered a Tacx Swing turbotrainer from Bikebuster, but when I tried it out the noise and vibration was terrible. It turned out to be a misaligned fly-wheel, so I sent it back. Last week-end I finally got it back — except it was the wrong resistance/roller unit (it looked like an old model) and the resistance-adjustment didn't work properly. I was disappointed and pissed off and demanded my money back, and Bikebuster said OK, without any fuss.

Yesterday I went to buy the same turbotrainer from Road Bike Shop in Vanløse instead, but it was sold out. Listening to one of the shop assistants explain about the finer points of modern turbotrainers to another customer I started to doubt that the Tacx Swing was the right one for me, and it does seem that nowadays ELITE is making some pretty sweet turbotrainers, but they're quite a bit more expensive than what Tacx has to offer. So now I'm starting to think that either an ELITE CRONO FLUID Elastogel or the Tacx Sirius turbotrainer is a better choice. I'll probably end up buying the Sirius turbotrainer, it's cheaper, robust enough and engineered to be a little quieter than the other Tacx models. And frankly I won't need something that can withstand sustained 600 W efforts, at least not yet (or ever).