15 tooth Front Sprocket

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15 tooth Front Sprocket - 10/18/2004 4:00:53 PM    YellaJacket   Posts: 20 Joined: 10/11/2004 Status: offline Just put on a 15 tooth Vortex front sprocket and it was the best $23 I have ever spent. I can really tell a difference in the acceleration and torque! Its alot easier to pop wheelies now! It did throw off my speedometer about 5 mph for every 50 mph, so if my speedo says 50 I'm really doing 45, and if it shows 150 I'm really doing 135. This is the best mod I have done to my bike for the price! _____________________________ 99 yellow F4 - yoshi slip on - LP flushies - Vortex Triple Tree - LP Windscreen -Vortex 15 tooth front sprocket Post #: 1

RE: 15 tooth Front Sprocket - 10/18/2004 4:55:41 PM    Duke Posts: 73 Joined: 10/12/2004 Status: offline what has it done to your rpms? what rpm did you used to run at if you were going 60mph? now what rpm do you run at going 60mph? thinking about doing the same thing, but not sure if I want to put up with the added engine speed at higher cruising speeds. _____________________________ 2001 - CBR600F4i Black & Red Box Stock (in reply to YellaJacket) Post #: 2

RE: 15 tooth Front Sprocket - 10/19/2004 1:56:08 AM    YellaJacket   Posts: 20 Joined: 10/11/2004 Status: offline It hasn't changed my rpms alot, except that they shoot up more quickly now! It completely cuts out the lag in the 5-7K range. When I'm in 6th gear doing 60 mph its at 4750 rpms, when I'm in 3rd at 60 mph im at 7k rpms. and as far as top end, I hit 160mph before the change and then did the same with the 15 tooth and it still had room to go faster. And just in case you're wondering my friend on his R1 was behind me double checking my speed... If I was you, I wouldnt think twice about doing this mod, unless you want to go up 2 or 3 teeth on the rear, its all about the same except the front is easier to do! If you have any more questions let me know. _____________________________ 99 yellow F4 - yoshi slip on - LP flushies - Vortex Triple Tree - LP Windscreen -Vortex 15 tooth front sprocket (in reply to YellaJacket) Post #: 3

RE: 15 tooth Front Sprocket - 10/19/2004 1:18:21 PM    sirlimpzalot Posts: 1404 Joined: 8/24/2004 From: Roseville, CA Status: offline I have a similiar set up gearing wise, but it is a 520 chain conversion. I just went to the track yesterday and it definetly helps the drive out of the slower corners and it does wheelie better now also..besides the speedo error also remember your mileage will not be accurate...so if you are changing your oil in mileage intervals you can go longer since the mileage is not correct..I would suggest that over 3000 miles the error would be somewhere around 500 miles..so I am shooting for oil changes at 3500 instead of 3000. I dont think it really makes that much of a difference, it is just something to think about < Message edited by sirlimpzalot -- 10/19/2004 1:29:41 PM > (in reply to YellaJacket) Post #: 4

RE: 15 tooth Front Sprocket - 10/20/2004 6:01:36 AM    stjoetalon   Posts: 14 Joined: 8/13/2004 Status: offline Where did you get it for $23? (in reply to sirlimpzalot) Post #: 5

RE: 15 tooth Front Sprocket - 10/20/2004 7:54:02 AM    YellaJacket   Posts: 20 Joined: 10/11/2004 Status: offline Edge 2 Edge Moto They have the best prices on everything. I have yet to find someone cheaper than them! _____________________________ 99 yellow F4 - yoshi slip on - LP flushies - Vortex Triple Tree - LP Windscreen -Vortex 15 tooth front sprocket (in reply to stjoetalon) Post #: 6

RE: 15 tooth Front Sprocket - 10/20/2004 8:24:10 PM    stjoetalon   Posts: 14 Joined: 8/13/2004 Status: offline Cool, Ill check them out! Thanks! (in reply to YellaJacket) Post #: 7

RE: 15 tooth Front Sprocket - 10/21/2004 9:40:51 AM    YellaJacket   Posts: 20 Joined: 10/11/2004 Status: offline Let me know if you find what you need, if not I will help you find it. I am still impressed by the difference in acceleration. My friends r1 no longer runs off and leaves me.... as bad!! _____________________________ 99 yellow F4 - yoshi slip on - LP flushies - Vortex Triple Tree - LP Windscreen -Vortex 15 tooth front sprocket (in reply to stjoetalon) Post #: 8

RE: 15 tooth Front Sprocket - 12/25/2004 1:10:56 PM    SUperspacemunky   Posts: 19 Joined: 10/28/2004 Status: offline Changine the front sprocket shouldn't change your rpm's at all. The F4 doesn't have the speedo cable, that the earlier models did, on the front tire. I just did the 520 conversion on my bike a few months ago and I love it!! (in reply to YellaJacket) Post #: 9

RE: 15 tooth Front Sprocket - 12/25/2004 11:53:04 PM    sirlimpzalot Posts: 1404 Joined: 8/24/2004 From: Roseville, CA Status: offline Changing the front or the rear sprocket will definately affect your speedometer reading since it is driven off the transmisson, since its the gearing it WILL alter your RPMs...drive your bike at 70 MPH with the stock gearing and notice what RPM it is pulling, now change it and see what your speedo reads at the same speed...the RPM will be higher with the different gearing (in reply to SUperspacemunky) Post #: 10

RE: 15 tooth Front Sprocket - 1/14/2005 8:09:50 PM    SUperspacemunky   Posts: 19 Joined: 10/28/2004 Status: offline reason why I was thinking it didn't was b/c one day when my chain came off and the speedo still regestered even though I was stationary, I knew it didn't have a speedo cable on the front rim like past models. I didn't even bother to think that it was linked to the tranny. Makes a lot more sense in my head now (in reply to sirlimpzalot) Post #: 11

RE: 15 tooth Front Sprocket - 3/11/2005 11:39:27 AM    1000RR   Posts: 100 Joined: 3/9/2005 Status: offline Good cheap mod. Makes 1st gear wheelies touchy. Makes 2nd gear wheelies easier. Slightly more acceleration, nothing great. Few more revs ~500rpm @ 60mph. Downside: Will accelerate chain wear. (in reply to SUperspacemunky) Post #: 12

RE: 15 tooth Front Sprocket - 7/14/2005 3:17:37 AM    ekathryn86   Posts: 58 Joined: 7/13/2005 Status: offline Any way you can correct the speedo and tac? Cuz I also was thinking about just dropping a tooth on the front. (in reply to 1000RR) Post #: 13

RE: 15 tooth Front Sprocket - 7/14/2005 7:43:40 AM    chainstretcher Posts: 4152 Joined: 11/5/2004 Status: offline Ya, speedo healer is one and yellow box is another one. And only the speedo and odometer are off -- the tach is unaffected by gearing changes. < Message edited by chainstretcher -- 7/14/2005 7:44:59 AM > _____________________________ It's better to burn out ... Than high side! (in reply to ekathryn86) Post #: 14

RE: 15 tooth Front Sprocket - 7/14/2005 12:49:04 PM    ekathryn86   Posts: 58 Joined: 7/13/2005 Status: offline The speedohealer.. does that cost about the same as the yellrbox? (in reply to chainstretcher) Post #: 15

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