CBRXXRAGE Posted January 19, 2005 Share Posted January 19, 2005 Does it make a big difference? Quote Link to comment Share on other sites More sharing options...
devilisht2003 Posted January 19, 2005 Share Posted January 19, 2005 yep :grin: i'm puttin mine back on Quote Link to comment Share on other sites More sharing options...
demon Posted January 19, 2005 Share Posted January 19, 2005 Sure does. Quote Link to comment Share on other sites More sharing options...
voodooxx Posted January 19, 2005 Share Posted January 19, 2005 whats typical? down 1 in the front? Quote Link to comment Share on other sites More sharing options...
devilisht2003 Posted January 19, 2005 Share Posted January 19, 2005 yeah much more and the front is always up Quote Link to comment Share on other sites More sharing options...
XX Posted January 19, 2005 Share Posted January 19, 2005 1 down in the front is the way to go! beware, it WILL affect gas mileage. Quote Link to comment Share on other sites More sharing options...
demon Posted January 19, 2005 Share Posted January 19, 2005 I've went -1 in front and +1 in back. Love the setup. Quote Link to comment Share on other sites More sharing options...
Furbird Posted January 19, 2005 Share Posted January 19, 2005 12/60 here. Just kidding. Actually 16/45, but I have an 18/43 available in the garage for speed runs and a 47 waiting on my 15 front to get here so I can try to lower my ET's at the local track. Quote Link to comment Share on other sites More sharing options...
superblkbrdxx Posted January 19, 2005 Share Posted January 19, 2005 my 98 just has frt 1 dwn. the 97 has 1 frt dwn & timing advance & barrett clutch & jet kit. the 98 gets twice as much mpg than the 97. the 97 will wheelie like a mother :bigshock: Quote Link to comment Share on other sites More sharing options...
njmaier Posted January 20, 2005 Share Posted January 20, 2005 -1 in the front...do it and you will love it. Quote Link to comment Share on other sites More sharing options...
rickrad Posted January 20, 2005 Share Posted January 20, 2005 I did it, I won't go back! Quote Link to comment Share on other sites More sharing options...
Guest rockmeupto125 Posted January 20, 2005 Share Posted January 20, 2005 my 98 just has frt 1 dwn. the 97 has 1 frt dwn & timing advance & barrett  clutch & jet kit.  the 98 gets twice as much mpg than the 97. the 97 will  wheelie like a mother :bigshock: I presume you mean Barnett. What plates did you use, and how would you compare the clutch to the stocker? Quote Link to comment Share on other sites More sharing options...
superblkbrdxx Posted January 20, 2005 Share Posted January 20, 2005 yes you are correct. sorry. the barnett clutch (which i dont know what plates) i bought the bike 6 mo ago. but between the two the 97 grips & no slip. factory clutch (98) slips a little. i plan on putting the same clutch in the 98. & the clutch is a lot stiffer Quote Link to comment Share on other sites More sharing options...
CBRXXRAGE Posted January 23, 2005 Author Share Posted January 23, 2005 12/60 here. Â Just kidding. Â Actually 16/45, but I have an 18/43 available in the garage for speed runs and a 47 waiting on my 15 front to get here so I can try to lower my ET's at the local track. What do you turn in the quarter mile? I am also installing N2o on my bike in the spring. Quote Link to comment Share on other sites More sharing options...
blackhawkxx Posted January 23, 2005 Share Posted January 23, 2005 Has anyone ran a 15 front for very long? I heard that it was hard on the chain because of the tight bend. Would the chain adjuster have enough room? Quote Link to comment Share on other sites More sharing options...
Guest rockmeupto125 Posted January 23, 2005 Share Posted January 23, 2005 Presumably, the tighter radius of the smaller sprocket will dictate greater flexion of the chain as it passes over the teeth, resulting in greater wear. I question this in comparison to the overall scheme of things. There's no stop, or change in clearance as the chain flexes, and in actuality, you are dividing forces over time over a great area and arc of the chain link pins AND rollers. I don't think a properly maintained chain and sprocket will wear significantly faster on a 15 tooth front sprocket than on a 17 tooth. It might in a laboratory, or an engineering thesis.......but not in the real world with its myriad of variables. But to examine the situation....... As that 15 tooth sprocket turns, it has 12 percent less teeth...and therefore the sprocket wear will occur 12 percent faster. Sprocket wear is the biggest contributor to chain wear...as the sprocket teeth become scalloped and the chain links ride higher and higher on the sprocket teeth, the chain pins are forced to their max tolerances, increasing the wear. Chain wears the sprocket, the sprocket wears the chain. At a certain point in the service life, the chain has increased its clearances enough to that it no longer fits the sprocket. At that point wear of both components, which has been essentially linear, becomes exponential. And I have an idea that if you eliminated one side of the wear "pair," you'd significantly extend chain life. The next opportunity I have, I'm going to change front sprockets at an arbitrary halfway point, and see if chainlife is extended. By eliminating the wear of the sprocket, and allowing the chain to once again ride the teeth properly, my hypothesis is that chain life will be close to doubled. The trick is to choose the point at which the chain sprocket pair changes from linear wear to exponential wear. This might be fun. And to use a 15 tooth you would need to drop to 108 links. Stock can extend only enough to use a 16. Superblkbrdxx..........how's the engagement point with the clutch? Is it really touchy, so as not to be such a good idea if you were to be in a parking lot, crowded slow traffic, or with a passenger/gear? Thanks! Quote Link to comment Share on other sites More sharing options...
Furbird Posted January 23, 2005 Share Posted January 23, 2005 CBRXXRAGE, the fastest I've run in the 1/4 so far is 10.50. That was a long time ago though, all motor, and I weigh 240#'s. I have nitrous on my bike now but have never made a good pass on the juice. It either flies up on me without the bars or I bog off the line with the bars, hence the reason for the gear change. My goal is high 9's with a 15/47 sprocket combo on the bars and bottle. I figure I can turn around 10.30 or so with my current setup on motor and enough passes at the 1/4 to get consistent. I run 6.40 in the 1/8 on motor, but that's because I run at that track all the time and am used to it. The 1/4 track is 100 miles away and I only go about once a year, so I never get used to that track and it's different conditions. Quote Link to comment Share on other sites More sharing options...
blackhawkxx Posted January 24, 2005 Share Posted January 24, 2005 Thanks Dr. Joe. Quote Link to comment Share on other sites More sharing options...
kf4mtw Posted January 26, 2005 Share Posted January 26, 2005 I left my front alone went up two on the rear, more efficient and smooth. I was always pulling up on my shifter though looking for 7th gear on my last one. I'll leave this one stock. :cool: Quote Link to comment Share on other sites More sharing options...
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