Bike pedals used to put a metal screw cap to protect the bearings from contamination. Now, instead, use the plastic plugs, which are often lost. Rescue plastic or nylon tubes from medical bubbles. Such substitutes being kept quite steady.
Recommend to read
RECUMBENT RECORDS
The term recumbent, all wheeled vehicles muscle-powered, is used in our country since the mid-1970s On the recumbent Vita Kharkiv J. Stepchenko, as the first swallow of a new kind of...
“LITTLE ONE” — SCHOOL CAR
"Many people are now interested in designing and building microcars. We in our automotive design club at School No. 146 in Novosibirsk also tried. The result, in our opinion, is a fairly...
