ninjette.org - View Single Post - Advice on cheap, like free Mods-for quicker acceleration~~Yes I searched !!!!

Alex · June 23rd, 2020, 04:39 PM

I don't believe there is a clear best answer here, other than "it depends". If the shifting was instantaneous, a 100+ gear transmission would be awesome, keeping the bike within a few dozen rpms of the power peak and accelerating the bike as quickly as possible. Theoretically that means a CVT would be optimal, but there is so much drag and loss in one that it negates any advantage. But if the shifting time took 8 minutes per shift, the best transmission would have 1 gear, and dealing with the bike running so far away from its power band for so long would still be faster than a single shift to make it better.

So everything in between is a compromise/optimization problem. The right amount of gear changes and how much it slows/speeds up acceleration compared to optimal depends on that shift speed, and also how much the engine power varies as it gets farther above and below its power peak.

June 23rd, 2020, 04:39 PM	#14
Alex ninjette.org dude Name: 1 guess :-) Location: SF Bay Area Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much. Blog Entries: 7	I don't believe there is a clear best answer here, other than "it depends". If the shifting was instantaneous, a 100+ gear transmission would be awesome, keeping the bike within a few dozen rpms of the power peak and accelerating the bike as quickly as possible. Theoretically that means a CVT would be optimal, but there is so much drag and loss in one that it negates any advantage. But if the shifting time took 8 minutes per shift, the best transmission would have 1 gear, and dealing with the bike running so far away from its power band for so long would still be faster than a single shift to make it better. So everything in between is a compromise/optimization problem. The right amount of gear changes and how much it slows/speeds up acceleration compared to optimal depends on that shift speed, and also how much the engine power varies as it gets farther above and below its power peak. __________________________________________________ Montgomery Street Motorcycle Club / cal24.com / crf250l.org / ninjette.org ninjette.org Terms of Service Shopping for motorcycle parts or equipment? Come here first. The friendliest Ninja 250R/300/400 forum on the internet! (especially Unregistered)