Dear Friends, As a Mechanical Engineers, we all know the requirement of oil on chain assembly. First of all, chain itself having relative motion within links. All metal parts. Friction always plays role. Secondly, because of less lubrication, respective parts will wear out up to certain limit and will manage the friction it's own. (Upper layer of frictional surface will wear out, what we see as polished surface). But chain still performs. Even replacement of chain is not so frequent requirement in Bikes. Somehow we are thankful to chain material, its treatment, and assembly specification. But, we are still left with the question. System says, it is require Lubrication. We must provide that, it is just "requirement". We should not deny. We must think for some simpler mechanism for lubrication. Also, an imagination quite closer to reality is required in this case. It is not like we are putting Jet of Oil on chain, which will make bike & cloths dirty. anyway, due to centrifugal force acting on oil during rotation of wheel, a fine dropped oil spray will take place for few rotation. I believe it is OK, if some amount of oil sprayed out to fulfill the said requirement. Instead of "clean bike", we must think on "mechanically fit" bike. After all mechanism matters. We think for system because we want system to work for us as and when required. If we perform timely as and when required, then why system is required? what will be the case when we forget to perform? It is always better if lights gets OFF automatically when we leave room. We need not to remember, and energy saving is most effective. Yes, we are performing where we do not have system. But if we forget to perform, it is useless. That is why we need to Kick Bike when we wish to drive it. or we need to rotate key to switch ON engine. Once system developed to switch ON bike, we need not to rotate key. User's weight is enough capable to push the button under seat to start the engine. Insert Key for unlocking and just seat on Bike. It is ready to drive. Isn't it? I think, lubrication system is stationary system, and always can be connected to heating source, in case of cold climate condition. even insulated bunch of thin aluminium wires connected to engine body will carry sufficient heat up to oil chamber (Wrapping of Aluminium wire around Oil container). This may be the solution of maintaining sufficient oil temperature. I appreciate question raised for this problem. I believe, we really think for solution instead of ignoring it due to it's simplicity. Thanks & Regards to all members. Harshad Patel.