3 ms·
High rpm always equals more wear. More revolutions, less perfect oil film on lubricated surfaces, more parasitic losses, more oil burnt.
by 10u152 3y ago
High rpm always equals more wear. More revolutions, less perfect oil film on lubricated surfaces, more parasitic losses, more oil burnt.
- bayindirh 3y agoWell, again why not governing it at a modern 5th gear at 120 KM/h, with a soft bump at 90 KM/h?
- 10u152 3y agoOh I can’t answer that. Was just pointing out advantages of lower RPM.
- itsoktocry 3y ago>Well, again why not governing it at a modern 5th gear Why not add a 6th, 7th, 8th, 9th or 10th gear? Wait, modern transmissions do.
- bayindirh 3y agoYeah, which depends on the torque band of the engine which drives the transmission. Generally 8 gear systems are paired with ~1.5L force induction engines to keep them in a very narrow RPM band, similar to Diesel engine dynamics. However, speeds nearing 180 KM/h is a natural result of these mathematics. What I was proposing to keep the same engine, reduce the gear count to 5-6 and keep engine RPM around 2-3K which maps to 90-120 KM/h band generally. You'll either keep 8 gears with closer ratios for a smoother acceleration, or shave two gears from top, because 8th gear on 120KM/h results in RPMs too low for the engine (on the cars I have driven though).