Efficient
My Brompton. I'm not an engineer. I have no feel for mechanics but I respect this machinery for its simplicity - the most efficient of all inventions for transmitting human energy into forward motion. I have a relationship with this item. I look after its parts. My feet have been turning these pedals (and their occasional replacements) transmitting my best efforts through the chain to the Brompton's 16" wheels for several years and many miles. Thus I travel under my own power. I know the chain quite well, having removed it, cleaned it in spirits and let it lie in a bowl of lubricating oil for a while before hanging it to drip-nearly-dry for a night, putting it back in place, turning pedals, rear chain set and wheel for 30 seconds, before setting out for my next destination.
Efficient
My Brompton. I'm not an engineer. I have no feel for mechanics but I respect this machinery for its simplicity - the most efficient of all inventions for transmitting human energy into forward motion. I have a relationship with this item. I look after its parts. My feet have been turning these pedals (and their occasional replacements) transmitting my best efforts through the chain to the Brompton's 16" wheels for several years and many miles. Thus I travel under my own power. I know the chain quite well, having removed it, cleaned it in spirits and let it lie in a bowl of lubricating oil for a while before hanging it to drip-nearly-dry for a night, putting it back in place, turning pedals, rear chain set and wheel for 30 seconds, before setting out for my next destination.