DJONES
Expert Class
Posts: 189
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posted February 13, 2003 06:17 AM
Sprocket Question , Beat to death
I know this question has been beat to death but I am going to ask it again becasue I am upgrading now. What is the best sprocket gear ratio when you pretty much 90% only drag race your bike. My bike will have a 4" bolt on extension this season and hopefully an air shifter.
DJ JONES
http://www.texas-offroad.com
    
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zx12richard
Pro
The Green Monster..
Posts: 1133
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posted February 13, 2003 06:38 AM
16/44 is good.... In my mind.. But I don't have an arm..
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kawachan
Pro
Posts: 1031
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posted February 13, 2003 07:14 AM
I used to use 17/48. With a lil motor work, my fastest time (so far) is with 17\46. I need to try 17/47, 18/48, 18/49, 18/50, and a few others to be absolutely sure though!!
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RED NINJAS RULE!!
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your car is slow
Needs a job
Fuck Nitrous...Got Boost?
Posts: 4089
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posted February 13, 2003 08:06 AM
Eh..if you are extending the arm...you are going to need a new chain anyway.
Id leave the stock 18t front...and just go get a huge mammajamma rear sprocket like a 48 or 50t or bigger.
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Do not taunt happy fun ball!
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kcadby
Pro
Posts: 1733
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posted February 13, 2003 10:12 AM
I like 17/50 on John's bike...I'd have something like a 54  on it IF I was to stay with the 18 on the front...
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wannabe
Pro
Posts: 1931
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posted February 13, 2003 10:30 AM
I'm trying the 17/48 for the first time this weekend if the weather holds out..
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"There are only three sports: bullfighting, motor racing, and mountaineering; the rest are just games." - Ernest Hemingway
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kawachan
Pro
Posts: 1031
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posted February 13, 2003 10:52 AM
DJ forgot to mention weight, but he is part of TFA's new division, TMA (for Team Muscular Ass), so he's a pretty big fella. I'm sure he'll not have any problems with shit-talking Busa owners!!
Ya think lower gearing helps for bigger fellas?? Or less gearing??
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RED NINJAS RULE!!
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wannabe
Pro
Posts: 1931
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posted February 13, 2003 10:56 AM
I am a proud member of TFA, and I bogged really bad off the line with the 17/46. But, I am running the 7" slick on the back.
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"There are only three sports: bullfighting, motor racing, and mountaineering; the rest are just games." - Ernest Hemingway
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DJONES
Expert Class
Posts: 189
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posted February 13, 2003 11:11 AM
Yea I was kinda wondering about that myself. I am 230 right now and only hope to get bigger.....
DJ
http://www.texas-offroad.com/Weightlifting/Weightlifting.html
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RAC4IT
Needs a job
Bergie
Posts: 3009
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posted February 13, 2003 01:24 PM
I would recommend starting with 17/48 at that long wheelbase, should be right on the money. Avoid the smaller 16T front because it will wear out a chain quicker than the 17T or 18T. Whatever advice you take don't make too many gearing changes; pick one and work with it and practice until you feel either comfortable with it or can really determine if it's too much or too little. I see guys swapping gears all time time they have no idea what they are doing and shift blame torwards gearing. Start small and work up, if you're getting wheelies step back. Sometimes less is more when it comes to ET.
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DJONES
Expert Class
Posts: 189
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posted February 13, 2003 01:43 PM
BTW...what is stock gearing?
DJ
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wannabe
Pro
Posts: 1931
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posted February 13, 2003 01:44 PM
Stock gearing on the 12 is 18/46...
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"There are only three sports: bullfighting, motor racing, and mountaineering; the rest are just games." - Ernest Hemingway
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kcadby
Pro
Posts: 1733
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posted February 13, 2003 03:42 PM
 Edited By: kcadby on 13 Feb 2003 15:48
17 50 is PERFECT for 1/8-mile...You'll tag the limiter at the END OF THE SPEED-TRAPS in 3rd gear IF you can get up to 120mph...
I've been 5.80s(5.83 5.84 5.86s) @ 122mph...on the limiter for about the last 30-40 feet in the eight
17-50 is also GREAT for 1/4-mile...it's good for 145+ to 155 in 5th gear without hitting the rev-limiter 
John weighs at LEAST 210-215...this gearing helped our (I'm 180lbs now) 330foot times which carried to the end of the track...
John has run MANY 9.50 1/4s and LOW 6s in the eight with this gearing...
I agree with avoiding the 16-tooth if possible, even though we DID use it on John's bike over a year ago as a CHEAP way (stock chain length) to try the 5-gear 1/4-mile...
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DJONES
Expert Class
Posts: 189
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posted February 13, 2003 03:46 PM
Would the best prices for stuff like this be Ron Ayers?
DJ
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kcadby
Pro
Posts: 1733
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posted February 13, 2003 03:55 PM
Sprocket Specialist makes good Sprockets
The chain???wherever you can get the 10,000+lb DID or EK...ZVX-ring type chain...
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