July 2nd, 2011, 07:38 PM | #41 | |
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On the note of squids: I saw a guy on an r6 today- shorts, no shirt, flip flops. he saw me and wanted to show-off, I suppose, and did a wheelie right in front a cop lol the street lit up blue and I couldn't stop laughing
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July 2nd, 2011, 08:33 PM | #42 |
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July 3rd, 2011, 12:01 PM | #43 |
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you should, that was at the revv limiter in 6th gear, on a slight downhill slope. but I happen to know that on flat ground it does 90~95 mph; I tested that on an unused runway near my buddy's house, not a public road btw
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July 3rd, 2011, 12:16 PM | #44 |
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No way if the bike is stock could you hit 115mph even downhill. The math says otherwise
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July 3rd, 2011, 12:35 PM | #45 |
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It will say that on the speedometer, but the gauge is often quite optimistic. It will hit the rev limiter around 105 mph actual in top gear, stock gearing/tire sizes.
http://www.ninjette.org/wiki/Why_is_...eally_going%3F
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July 3rd, 2011, 12:41 PM | #46 | |
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July 3rd, 2011, 01:02 PM | #47 |
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nevermind, yes, I just read the thread that was linked to that thread. Depending on tire diameter and gearing it could go either way
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July 3rd, 2011, 01:20 PM | #48 |
wat
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it's possible but i've never seen it report slower than you're going. iirc people say the manufacturers err on the side of reporting too fast... wouldn't want someone blaming them for getting a ticket
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July 3rd, 2011, 02:41 PM | #49 |
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Gearing has nothing to do with it on our bikes, as our speedo is driven off of the front wheel. The sole factor that changes over time on the same bike is the diameter of the front tire. As it wears it will rotate ever so slightly more often for the same distance traveled over the road, so the indicated speed might be very slightly higher (but if it affects it more than 1 mph I'd be surprised).
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July 3rd, 2011, 04:08 PM | #50 |
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August 26th, 2012, 08:49 AM | #51 |
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On the original topic, The more revs, the more wear, that's simple. As far as engine damage or accelerated wear, the red line is always in the "safe zone" from the factory, for acceptable wear.
You guys/gals are lucky, to live in a motorcycle "age" where there are rev limiters, it's almost impossible to over rev and blow motors up. Many, many motors were blown up without them........ |
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August 26th, 2012, 10:02 AM | #53 |
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August 26th, 2012, 03:17 PM | #54 |
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This engine is bullet proof. You will really have to do some work to damage it. Wait till I come off the dyno. I am going to spray 30 hp of nitrous on it.
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August 26th, 2012, 05:38 PM | #55 |
ninjette.org sage
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I agree with the general bullet proof status quo. This engine rules. It loves having its neck wrung and the piss beat out of it. Of course, if you do so make sure to check your oil level quite often. I always check mine at every fill up and at the beginning of every day or if I get done with a long cruise. These bikes will use some oil at high RPMs and they need all the oil they can get.
I say shift at 12.5k-13k. That's the sweet spot. |
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August 26th, 2012, 07:31 PM | #56 |
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What about long thruway rides at high rpm? I was going from Buffalo to Rochester, NY and it's about 80 miles at 11k rpm... At one point my bike decelerated and I had pulled to the side of the road to restart but it was having difficulty doing so; I waited a few minutes and retried and it started up with slight hesitation. My fuel was low, could that have been the problem? I know the bike is liquid cooled and going freeway speeds it should have enough flow to keep the coolant at satisfactory temperatures but could it have over heated? How many people take long commutes at elevated high rpm?
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August 26th, 2012, 07:37 PM | #57 |
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From my experience she will take at least 3 inches for 30 seconds
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August 26th, 2012, 07:42 PM | #58 |
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Whats the difference?
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August 26th, 2012, 08:37 PM | #59 | |
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You ran out of fuel. I've never had my temp gauge climb even at high speeds on the highway. I have come close to over-heating coming into town sitting at all the lights (stop and go) after a hard run in the hills, but that's it. Same thing happened to me when I was 127 miles from home on its first long distance run. I was freaking out it was a mechanical problem and had it towed home to the tune of $120 only to figure out I ran out of fuel. Life's lessons. Hah! |
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August 26th, 2012, 09:39 PM | #60 |
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If he ran out of fuel he wouldn't be able to restart. This sounds similar to what happened to me today.
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August 27th, 2012, 07:34 AM | #61 |
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Sometimes she is so loud she'll wake up the neighbors if its late at night
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August 27th, 2012, 11:58 AM | #62 | |
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Sounds like you need to open the gas cap next time it dies like that and try to restart it. Your gas cap might be pulling a vacuum instead of venting like it should. Bring it down to 75 or so geez. |
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August 27th, 2012, 12:26 PM | #63 | |
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August 27th, 2012, 12:36 PM | #64 | |
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August 27th, 2012, 12:42 PM | #65 |
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August 27th, 2012, 01:36 PM | #66 |
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Is the tach optimistic like the speedo? Mine revs to an indicated 14k rpm, and actually seems to be a bit more than that.
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August 27th, 2012, 01:45 PM | #67 |
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August 27th, 2012, 03:04 PM | #68 |
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I would say about 80 as that was my personal speed ceiling.
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August 27th, 2012, 03:29 PM | #69 |
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August 27th, 2012, 03:31 PM | #70 |
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That's in a perfect scenario though, right? Would the temperature of the motor have any effect on the rpm? I swear I saw 9-10k rpm when I was 60-65mph and usually it's slightly lower than that.
Perhaps it had something to do with the extra weight on me... I had a spare helmet attached to the side of the passenger seat (potential drag), I was in my gear (boots, jeans, jacket, gloves), I had a stuffed back pack that had to have been at least 15lbs, and I'm about 170lbs. So let's say the road isn't entirely smooth, there was some wind, I may've been going slightly uphill, accelerating, and I wasn't tucked while riding. Does 11k in a transient state with real world variables still equate to 89.3mph +/-0.1mph?
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August 27th, 2012, 03:34 PM | #71 |
ninjette.org member
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The only things that can effect the mechanical ratios (rpm to speed) is a slipping clutch, and tire size.
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August 27th, 2012, 03:39 PM | #72 |
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Ninjas sometimes report a higher rpm than they are actually at. Some CDI issue or something
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August 27th, 2012, 04:02 PM | #73 |
Ambrosia.
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I was riding 10k+ in slowish traffic for about 25 minutes. As soon as I got to open it up, it overheated and shut off.
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August 27th, 2012, 04:48 PM | #74 | |
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Your CDI probably just reads high. |
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August 28th, 2012, 12:19 PM | #75 |
ninjette.org member
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I just found the bore/stroke for these little guys. The safe factor (RPM) for many years was 40000ft/min. It is much higher now for a lot of bigger bikes.
But for the 250 it is 14,796 rpm for 4000 ft/min. So even thought they rev high, they are really in the safe zone even at 14,000 RPM. |
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August 28th, 2012, 12:49 PM | #76 | |
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Cold 60 MPH= 7000RPM Hot 60 MPH= 8000RPM It's nothing to be concerned about, just a bit annoying. Bill |
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August 28th, 2012, 02:50 PM | #77 |
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August 28th, 2012, 04:13 PM | #78 |
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Yes, the tach reads the output from the CDI unit. Some of the stock CDI units are sensitive to heat, and will throw a false high reading to the tach.
I see this on my bike all the time. In the morning when it's cool, the tach shows 8000 rpm at 70 mph, but in the late afternoon when it's hot, it reads 9000 rpm for 70 mph. Of course, the engine is still spinning the same speed for the same road speed, assuming no clutch slipping. The tach is just giving a false high reading when it overheats. http://www.ninjette.org/forums/showthread.php?t=42329 |
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August 28th, 2012, 04:56 PM | #79 | |
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August 28th, 2012, 05:31 PM | #80 |
ninjette.org sage
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IIRC the original bikes red lined at 16k. I hear they kept reducing the limiter due to oil consumption at high engine speeds.
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