SpazOnaR3
.060 Over
...something to think about when you make all those calculations is the maximum amount of wheel slip you'll experience you can experience and still accelerate/maintain at high aero drag speeds. I do not posses any concrete #'s, but I see about 7% appear over and over again in research, and personal experience lines up **** close to that. When I do gear/mph calcs I generally take out about 8% from my theoretical max.... Kentucky windage for wheel slip, and the soft hysteresis zone around the rev limiter.I was looking again because I was rethinking the RPM required to actually achieve a speed starting with a 2 instead of a 1. Turns out, the 200/60 and 200/65 give Mufasa a very real chance to turn 200+. At 8000, the bike is still making 254 whp/188lbft, or 219/213 mph potentially (not pictured runs, pictured run was during tuning still). Figure in salt induced slip and it remains quite possible. Mufasa peaks at 7900 and holds onto most of the power until 8300 where it kind of plummets, but that should be fine.
This really lifts my spirits, as the gearing commander had me doubting the whole endeavor could even touch 200 until I realized it had changed the gear ratios on me of its own accord. I've been looking at some of the other 200ish bikes that have achieved it and I do not think it's out of reach with good conditions of salt/air combined.
On a BIG plus note, this means @Justdad can actually use the very easy to read stock tacho up to about 7800 RPM (my tach stops at 7800, so he'll have to look at the digital tach, or better yet, just focus on maxing it, RPM be ****ed).
It also betrays a secret about previous 174-176 mph runs on carpenter 240 engines:
This is probably why they were running the 240/50 instead of the 240/55. The 240/55 puts the RPM too low in 5th, 6700 at 175, where the 240/50 puts it at 6900, or much closer to the 240/265 engine build peak power of ~7200-7400 (if I remember right). They may also have been in 4th gear, using the overrun potential of
the engine at about 8300 RPM (I doubt it though as the 240/265 kits make piss poor power up there).
Just by looking at the graphs, you can see how the difference is going to enable top end more via RPM. The 2 N/A Rocket 3 record holding bikes at ~175 were both 240 kits.
240 kit (Carp website source, no filter, oxygenated fuel, not a real dyno):
Mufasa (with air filter and pump gas)
This is a previously unpublished sheet if I remember correctly, the cold run (red) is how Justdad will be running, the blue run is heat soaked.
With excellent grip and/or a superb aero profile you may experience less slip over 180mph, but a big nekkid bike and the kind of salt we've been having the last few years are not leaning that way.
