ive just recently put together a 90 degree v12 with a short stroke distance (around .2) the engine has double sleeved cylinder walls and very large pistons to try and keep them inside the engine block. The engine is undersquare with a bore of 1. The crankshaft has a minimum weight by using welds instead of physical parts to connect its bearings. It uses 4 blast pads per cylinder for maximum coverage over the bore of the piston, and operates at a maximum stable performance boost of 50,000 blast pressure (expressed as -350,000 in the blast pad’s “RPM” value which controls pressure). Standard boost at 0 “RPM” is 400,000. It’s not recommended you push this engine past 50,000, and it will run with less failure all the way down to around 25,000. It will run at regular operating pressure at around 100 rotvelocity, or about 950 revolutions per minute. It can peak up to 130 rotvelocity, which is around 1200 revolutions per minute. The engine has a pre-advanced combustion, meaning the blast pads are positioned below top dead center, to take into account a lag in detecting collision. Because of this, the engine will not want to leave its rev range of 90 - 130, and will not run at low RPMS. you can adjust this by moving the heads of of the cylinder by 0.1. it will not run as fast. The engine is balanced relatively well, however any attempts to do it better would be appreciated.
the model:
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