Recumbent - Magical Wheelbase

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View Full Version : Magical Wheelbase


rabbitt
08-08-06, 03:10 AM
i know i have been a post-zilla lately, but i'm just bursting with questions, so whether or not you like it, here it is: What is the minimum wheelbase at which what is known as "passive suspension" occurs? Rans lwb's are famous for being smooth, yet they have no actual suspension on the wheels. Part of it is the chromoly and the other part is the huge wheelbase. I understand that lowracers (which are considered SWB's) have a longer wheelbase than the average SWB. A lot of lowracers also do not have suspension (ie optima baron or challenge jester). are these rides as smooth? anyone have any experience on this? I'm trying to break into the 'bent world and also to start some sort of cycling club in my area to show cars that they suck and to generally have fun. Some of my acquaintances ask if i still ride "that little bike everywhere?",(Yes, i think they mean it derogatorily) and i'd like something with a considerably longer wheelbase than a DF. Also, I'm suspicious that shocks will rob my ride of power, so i'm opting for more of a "natural" smoothing out of bumps. What's a good wheelbase at which i can experience some quality suspension and are longer wheelbases conducive to flexing? (which would also rob one of power)


JanMM
08-08-06, 08:39 PM
After riding a Novarra hybrid with a stiff, rugged alloy frame and fork for the last 3 years, and also riding a fairly shock-absorbent Cromo-framed, 26" wheeled, KHS tandem with my wife, I got a 6-year old CLWB Rans Tailwind this Spring. The 2000 model has the 1.5" cromo main tube, which was increased to 2" a year or two later to stiffen up the ride. If this Tailwind robs my power output thru flexing, which it might, I don't notice it, and boy, is the ride nice! The Tandemania tandem now feels rough and overly stiff, in comparison. I assume the newer models are a bit less flexy. But probably still nicely compliant.

jeff-o
08-09-06, 07:37 AM
Passive suspension depends not only on the length of the wheelbase, but also on the frame material, and the frame design. Cro-mo will flex more than aluminum. A single boom will flex more than a triangulated frame.