As some of you might be aware, my wife and I finally purchased a second tandem earlier this year after having ridden our first one for about 25 years. Needless to say, we've been riding tandem for quite some time, but we have very little experience riding other tandems than the two we've owned.
Our first tandem was literally a tank and very heavy, but it was designed as a road racer by a guy who just dabbled in building bikes. Although, they were really built well. This particular bike was entirely constructed of straight-gauge aircraft tubing with two small laterals extending from the front of the bike to the rear. In a word, the bike was very "rigid," and we could feel every bump in the road with little or no flex in the frame.
Our new bike, however, rides like a cadillac; it's very smooth and handles very well. However, I notice much more flexibility in the frame, especially when climbing hills or simply just wiggling the bike while on a ride. This certainly doesn't bother me, for the added flexibiltiy just seems to make the bike a much more comfortable ride for both of us.
So, my question(s) is this: how much flexibility is inherent in your frame? and how much flexibility do you find acceptable? Of course, I'm not looking for a fix.....just curious. Thanks!