| Author | Message | ||
     1200r |
or should i say how high can i safley rev this bike it doesnt have thunderstorm heads. i also has no tachometer. so i have no clue. the guy before me floated a valve so i would like to avoid that. thanks | ||
| Mikej |
If you don't have a tach then how will you even know? Many if not most of the stock Buell control modules contain a rev limiter in the ignition circuitry so that the bike should cut-out and start dropping spark when you get into the upper ranges. Many years ago I helped work on circle boats and those guys would run flat out wide open and the only constraints was how much air could be sucked down thru the carbs, they didn't run rev limiters, but they were set up to run high and long - you can't win the race if you sink or blow up. Much will depend on how stock your bike is, a stock Buell should probably not be floating valves. (Ignore everything I just typed.) | ||
| Blake |
6,800 rpm | ||
| Blake |
At which point the ignition will fire intermittently. You will absolutely know when you hit the rev limit. This is for a stock ignition module of course. | ||
| Natexlh1000 |
Perhaps the guy before you THOUGHT that he floated a valve but actually just hit the rev limiter? | ||
| Mikej |
 | ||
| Bomber |
banging the rev limiter DOES feel like somethings gone arwy or so I hear ;-} | ||
| Interceptor |
its not so bad, one of my first rides on my 01 cyclone I hit the limiter. It actually scared me a bit, I was like "whoah what was that?" Hard to explain what it does. | ||
| Mikej |
Kind of feels like you're about to run out of gas as your wicking it up as the cloverleaf straightens out and your trying to catch the car that went by while you were still on the overpass and the semi that's now behind you is bearing down to take the offramp, or something like that, not that I'd know about that, besides I was somewhere else at the time last week or so, or was it this morning,.... | ||
| Fullpower |
1200r, dont worry about it, just ride the snot out of it. there are myriad and several reasons that bike doesnt have or need a tachometer. Firstly: the stock cams, valves, and carburetion stop making usable torque several hundred rpm prior to the point where the stock ignition cuts off spark. in essence the engine runs out of wind prior to the rev limiter. Second: It is intuitively obvious when you have reached a reasonable shift point. when it is done "pulling" youi just kind of "want" to shift, just comes natural. the stock cyclone engine is SO TOUGH, that you are not going to hurt it. you will run it out of fuel before you hurt it from high rpm running. the 97 cyclone is essentially a sportster motor, with a slightly higher rev limiter. i have spent a whole weekend between 5000 and 6500 rpm, from one gas station to the next. never even got the oil temp over 205 degrees F. enjoy the ride. dean | ||
| Jackbequick |
1200r - Here are some benchmarks from my 2000 M2 (I added a tach kit): 2nd gear, 25 MPH = 2,500 RPM 3rd gear, 40 MPH = 3,000 RPM 5th gear, 63 MPH - 3,000 RPM The heavy vibrations that are present at idle, smooth out at 2,000 - 2,500 RPM when the bike is setting in neutral. Underway, 2,500 RPM feels much smoother than it does when stationary. It cost me about $150 for a new tach kit from a dealer, that includes everything you need (two hole bezel, wiring , etc.) and is an easy enough install for a home mechanic. Jack | ||
| Newfie_buell |
Hit the rev limiter with the front wheel in the air and it drops awfully fast!!!!! Ask me to tell you about it sometime!!!! | ||
| Chasespeed |
Hit the rev limiter with the front wheel in the air and it drops awfully fast!!!!! Dont have to....and I have a tach... Chase} | ||
| Newfie_buell |
Or just make sure you shift to second!!!! | ||
| 1200r |
ok ok, maybe somebody misunderstood me. i know it has a rev limiter and a redline somewhere. i currently have taken the motor out of the bike and when i put it in a new bike i am installing a crane ignition system. i want to set the rev limiter on the new iginition but i have no clue on how high i can rev it before damaging it. and i know for sure he floated a valve because he crushed the •••• out of it and destroyed the motor. i have been a mototrcycle mechanic on metric bikes for 9 years. i have heard many rev limiters and thats not what he heard he blew this puppy up. he gave me the repair reciept for $$$$3300 in damages. | ||
| 1200r |
i plan on riding the snot out of it, oh believe me i just want to stay away from the damage zone. i just sold my 2005 sportster 1200R whick i think i hit the rev limiter everytime i shifted. im just used to sportbikes. hahaha. just with the motorwork this guy had done before i bought it i want to be safe it only has like 2500 miles on the rebuild. | ||
| Mikej |
Set it at 6,500 then and go whack that throttle. (I don't know if you can set it at 6,800 or if it jumps in 250 or 500 rpm increments.) | ||
| 1200r |
so 6500 is good. i know if i set it and whack the throttle it will hit the limiter but i want the highest i can set the limiter without problems | ||
| Natexlh1000 |
Yeah and so long as it's out of the bike and apart, you might as well put in X1 cams. | ||
| Mikej |
"but i want the highest i can set the limiter without problems" Then you'd better ask someone else and look in detail at what's inside your engine as there are many factors to be considered such as valve springs, flywheel balance and trueness, piston rod fabrication, pistons and rings, if you have an oil wiper in the crankcase, and a whole slew of other issues. Every engine is unique and different, even if it was built with the same part numbered parts as the next engine when you factor in tolerances and assembly and prep and such. I'll bounce any of my bikes off their respective rev limiters from time to time, but I ain't about to hold them there for too long or too often. I've run the M2 at 90+mph for over an hour with little concern beyond blue lights behind me, but wouldn't dream of holding it at redline for that long. YMMV, and it ain't my fault if your bike blows up. | ||
| Chasespeed |
yep, X1 cams with t-storm heads....I know my rev limiter is somewhere aorund 7.000, w/ teh race ecm... Chase | ||
| Blake |
Chase, Your rev limit is 6,800 RPM. Every 1996 and later model 1203cc Buell twin sold to the public has had the same 6,800 RPM rev limit; race ECM or stock, it is the same. (Message edited by Blake on October 26, 2005) | ||
| Chasespeed |
Huh, guess my tach is off....not that I pay THAT much attention... Besides, I coulda swore someone mentioned that T-storm headed Buells, rev'd higher.... Chase | ||
| M1a65 |
High speed on the M2 sporty engined models have been know to burn holes in the pistons during prolonged high speed use. From the UK Buell info board. Not that anyone in the states will be running 120 for hours at a time as in europe... | ||
| Natexlh1000 |
Sounds like a lean condition. | ||
| Jlewis50 |
On the rev limit. I rode a neighbors Yamaha 600 and pegged the rev limiter at 16000. I recently saw where a new yamaha will rev to 18500 stock. That is getting to F-1 levels. Joe | ||
| Blake |
Chase, There is no accounting for what some folks see fit to "mention" on a discussion board. Heck I've been wrong about Buell specs more than once myself. But his issue of rev-limit has been around for all the almost 8-years that BadWeB has been in the works and the answer has not changed. The 1995 and earlier Buells did indeed have a lower rev limit, and the T-Storm heads debuted in 1997 exclusive to the S1W, so you can see how the confusion might happen. The race ignition modules for 1995 and earlier Buells did indeed provide a higher rev limit, but that stopped being the case since the introduction of 1996 Buell models. The 1996 Buells, including the S1 and the S3/S3T all had a 6,800 rpm rev limit as did their race modules. In 1997 the M2 Cyclone and S3 Thunderbolt and S1 Lighting, all toting the Lightning version cylinder heads all had a 6,800 rpm rev limit.  | ||
| Blake |
JLewis50, Pretty sure the special edition R6 revs to 17,500, per Cycle World anyway. Still turbine-like and scary high speed spinning stuff going on. | ||
| 1200r |
thanks blake but my m2 is a 1997 without t-storm heads | ||
| Benm2 |
Thought the difference between the race & stock ignition modules wasn't in the "hard" limit at 6800, but rather how it reacted before that. I thought the stock module started retarding the ignition at about 6500 with a hard cut at 6800, but the race module had no "safety margin", and just cut at 6800. http://www.badweatherbikers.com/buell/messages/3842/10398.html?1059591514 Not specifically mentioned, but you can see the difference in the chart. | ||
| Blake |
1200r, Doesn't matter, same rev limit. All 1996 and later 1203cc Buell twins have the same 6,800rpm rev limit, Lightning heads or T-Storm, race module or stock, they are all limited to 6,800 rpm. Ben, the stock module just has a different ignition advance curve. I wouldn't equate the stock curve to a rev-limiter. You can easily slam right into the 6,800 rev limit on a stock Buell of any model year from 1996 onwards. Yes, that report by Aaron Wilson shows exactly the situation for stock versus race module. (Message edited by blake on October 28, 2005) | ||
| Benm2 |
Never had ANY trouble hitting the limiter. I use it as a shift point. The difference CAN be seen on the two curves, the stocker falls off sooner. Not dramatic, but its there. The LIMIT, though, is the same, as you point out. |
