|
|
Frequently Asked Questions1. How does it climb?According to Bicycling magazine, Lightning defies the idea that recumbents are "dogs uphill" and stands alone as being undaunted by steep climbs. The efficient Lightning frame/seat designs and powerful position deliver excellent climbing performance . . . equal to or better than a comparable upright bike on 90% of the hills you encounter. For example, on grades up to 12%, an average rider on the 19 lb. carbon fiber Lightning R-84 will climb the same or faster than a road bike. Hard to believe? The LIGHTNING VIDEO features an R-84 passing numerous upright riders on a long 8% grade during the Solvang Century. Climbing well on a Lightning recumbent (or any bike) requires training the muscles that are used. Climbing on a Lightning uses the gluteus (buttock) muscles more than an upright, and thus upright riders will require some training before they equal their climbing performance. With equal training, climbing will be just as fast or faster on the Lightning. For real world climbing experiences, check out our articles on Climbing and the ROAD TEST REVIEWS. Good climbing is basically a matter of having a high power to
weight ratio, plus developing lots of power efficiently, so that
you don't blow up trying to stay with the upright bikes.
Notes on climbing from Tim Brummer, Lightning designer: I climb best at about 70 to 80 rpm. It is also important for
Lightning riders to shift down BEFORE your cadence drops below 50
or 60. On an upright, that is not too important but on a
Lightning it is. 2. Does that thing have a motor?No, only superior aerodynamics. As a result, the Lightning F-40, which is based on the P-38 frame, holds many records including:
These speeds are up to 20% faster than the best times of
upright UCI (official racing) bicycles. Even more incredible, the
Lightning F-40 is a production bike, used for daily commuting by
riders worldwide. 3. Is that weird seat comfortable?Very. To find out just how comfortable, Bicycling Fitness
Advisory member Randy Ice conducted a survey of upright cyclists
and Lightning recumbent riders. The upright riders reported
having three times more overuse injuries and pain than the
Lightning riders. For example, neck pain was reported in 48.8% of
upright riders and only 7.3% of Lightning riders. 4. I notice all your bikes have upright handlebars as opposed to under the seat steering. What are the advantages and disadvantages of each.Above seat advantages: 1. Higher speeds We have never experienced any advantage to underseat steering; if there were, we would offer it on our bikes. The Lightning above seat steering position yields a very comfortable, higher performance bike for several reasons:
5. Why not use a smaller rear wheel? Isn't it more aerodynamic and lighter than a 700c?When it is the back wheel, a 20" IS NOT more aero, because the part behind the riders back is in a low pressure area, thus it doesn't add to the overall drag. Only the part below the rider creates a small drag, this is usually the same with either a 700C or 20". Yes they can be lighter, but at the expense of ride comfort
and limited gearing. If you add suspension, the bike will weigh
more than an unsuspended 700C bike, or even a 700c suspended bike
like the R-84. A suspended 20" is heavier than a suspended
700c, because a longer travel/heavier suspension is needed for
the 20" to achieve the same comfort as the 700c. Plus,
longer travel suspensions have more power loss. Perhaps not much
more, but more. 6. Why not use an internal hub for gearing so as to get a good gear range with a smaller rear wheel?The Sachs 3x7 hub may be a preferred choice for some riders,
if you don't mind the 10% power loss of the internal gears. 7. What gear range should I have?Most of our owners say that the 125" high gear on the P-38, and the 140" on the F-40 (113-125 is the usual high on a road bike) is enough. They also like the 24" low, especially tourists. At first some riders say they want a higher high gear--probably this is before becoming acclimated to the Lightning position, riders are comfortable with lowers cadences of about 60 to 75 rpm. However, normal riding and training will increase the comfortable cadence range to 90 or higher, thus the stock gearing will then be fine. We have found that, with the higher power position and
efficient frame of the Lightning, 24" is a low enough gear
for the average rider, even when touring with a 50 pound load.
Check out Climbing and
ROAD TEST REVIEWS for confirmation of
this. Of course, bikes slower than a Lightning might need lower
gears.
|