If this is a repost, DEAL WITH IT It's still unbelievable to me! [ame]http://www.YOutube.com/watch?v=uzPvPowrm6M&feature=related[/ame]
This is what happens when you have too much free time on your hands!!! Now, when is he going to make the TR that it goes in ? Does Tubi make an Exhaust for it???
OK. I am dumb. Where did anyone get the plugs and dizzys that small? Pistons and cranks and even cams & valves I "get." But the rest ...... NOT.
If my grandfather was alive, he could look at this and figure it out. The man was a machinist genius and would probably say something to the effect of 'All you do is scale the measurements down from the 1:1 plans." To you and I who are not machinists, that means jack. To him, he could already see the lathe and CNC dimensions, how it's cut and by how many thousandth of a millimeter each parameter is programmed.... amazing feat!
Indeed, this is a remarkable achievement in geometric scaling and machining, but what of the similitude? I have to assume that someone as capable as the person (man or woman) who produced this model took in to account the scaling of fluid flow. A simple geometric scaling of valves and exhaust ports, carburettor jets, etc., would likely have led to failure. I encourage those interested to go to Wikipedia's discussion of similitude. http://en.wikipedia.org/wiki/Similitude_%28model%29 While a bit technical, the concept is used in fluid dynamics to calculate dimensions for conduits carrying fluids (gas or liquid) when modeling. Reynold's number, flow velocity, pressure, all are not in linear relationship to dimension. Hence, simple geometric scaling will result in flow that is not at all linearly related to the scale. One of the areas where similitude is used extensively is in ship design, where tank models are tested, and in air-craft design when models are built and flown. (At least in the old days when I used my slide-rule to design this stuff in school. Today it is done by CAD systems.). For example, if one reduces the diameter of a pipe by half, the flow through the pipe will not decrease by half; it will decrease by something greater (perhaps one-fourth). That said, internal combustion engines are quite forgiving, and the human component provides a remarkable feedback control system. We call this trial and error. The artist likely adjusted dimensions once they tried to start it, and finally tuned it to run smoothly. Really a beautiful thing to see. Jim S.
fantastic.....my mind immediately goes to "could it make more power?" ....could use some headers (looks restrictive)....bet that intake could be tweaked a bit? ....hmmm
That's awesome Of course y'all have seen this, right? [ame]http://www.youtube.com/watch?v=SeUMDY01uUA[/ame]
