I'm taking delivery of the subject Helios SL very soon. From discussion with my friend who has the latest SL and the latest KHS folder with front derailuer and time trial bar with aero bar, I gather that the SL only advantage is its weight. It's too light at high speed and the riding position doesn't suit the high speed use like the KHS. Has any one adopt drop bars on his SL, and if so, does it improve high speed handling? Any other improvement reccommendation is much appreciated.
What do you mean by "too light at high speed"? Too light meaning...? High speed meaning...? And, when stating high speed, do you mean for long distance/high speed or short sprints? There's a bicycle shop in the U.S. that is an authorized custom shop for Dahon's. They can probably answer your questions with more authority. To contact them, go to: http://www.gaerlan.com/
Thanks for replying to my thread. By saying "light at high speed", I mean being unstable. I've not ridden my friend's Helios SL 2005, but my friend said that it's because of the tall front post. I've seen picture of the Solo Single Speed Classic 2006 model with drop bar, and wonder if it can be retro-fit to 2005 model. I'm posting here because Dahon's site is crashing frequently.