Topic: Theory behind the long stroke vs short stroke engines.
Mad Max
unregistered
posted
It is well documented that there are long stroke and short stroke versions of the Novarossi motors. Some configurations are better for different types of operation. My questions are 1. what is your opinion on these differences 2. does the type of operation of the motor determine the configuration. (off road, on road, Oval), torque curve etc. 3. The current configurations of the motor limits the use of full throttle. Is there a method of or way to keep a motor at almost full power but limit the rpm to not blow conrods or bearings. I'm sure this more of a load issue. I am looking at long distance oval racing. 4. Can a more stronger conrod be used, eventhough performance would suffer. 5. The X12T is illegal for ROAR or Norrca the specs currently are 3 port non turbo (hopefully to change). One of my racer buddys took the 12Turbo (3port)and put a standard head on it which makes it legal for these classes. He stated that the turbo motor is configured with more exhaust timing. are there any concerns from the factory with the difference between the turbo and non turbo than the head. I did not expect the timing or porting to change between the two.
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posted
1,2,3) As for the first part of your question, it is impossible to make the perfect engine for all situations, everybody has its own interpretation to build engines as we have and so whe have made a line of engines which we think is best suitable. Of course there is always space to improve things and it will be a neverlasting way to try, design and manufacture the perfect engine...
4) Our rods are the strongest possible, of course you can make an even stronger conrod but in general it will be heavier and so you will loose performances.
5) The piston/liners and crankshafts of most of the X12 engines are the same as for timing and porting, the difference between the turbo and non-turbo engines is the glowplug-type.
posted
Thank you for your responses. I understand the issues of compromises in the building and developing of motors. Are any of RB .12 size motors capable of operating at WOT for many minutes at a time.
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