navigator
Expert Class
Posts: 308
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posted October 29, 2006 10:03 AM
Gear ratio question
I was doing some maintenance on my bike yesterday and noticed that most of the time my chain is riding on the hard plastic thingy (pardon my use of improper terminology) that protects the swingarm. If I install the 16 tooth sprocket that I have it will only cause it to rub more. I think I caused part of the problem by adding preload to the rear spring to hold my heavy butt up.
So I'm thinking that if I go with a larger rear sprocket I will still get improved acceleration and it will help raise the chain off the swingarm. Looking at a gear ratio chart shows the stock combination of 17/41 has a ratio of 2.412. The 16/41 would be 2.562. I'm considering using the 17/44 which would put me at 2.588.
I know most people change the front sprocket because it is more cost effective. Are there other reasons for changing front versus rear? Any advice would be appreciated.
  
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fastestbusaaround
Needs a life
I eat Fish...
Posts: 7889
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posted October 29, 2006 11:15 AM
Don't think it much matters and if your chain is rubbing more on the teflon guide, I don't think that matters much either; it's designed for that and can be changed easily and cheaply when required.
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ninja14
Pro
Posts: 1136
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posted October 29, 2006 12:16 PM
Swapping fronts seems like less of a pain in the ass to me.................but I did front and rear :-) 16/43...........wheelie monster...........
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fastestbusaaround
Needs a life
I eat Fish...
Posts: 7889
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posted October 29, 2006 02:09 PM
+1
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TJ
Zone Head
Posts: 604
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posted October 29, 2006 02:26 PM
Going up three in the rear (with stock front) may require a new chain. Maybe someone here knows...
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ninja14
Pro
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posted October 29, 2006 03:20 PM
I doubt it..........but it may be close.........16/43 uses stock chain.
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navigator
Expert Class
Posts: 308
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posted October 29, 2006 04:11 PM
One, I couldn't ride a wheelie if my life depended on it. I never do it on purpose.
Two, I already tried to change the front sprocket and found that King Kong must have torqued the nut. I would have to get my wife to haul my stands to our shop on a weekend when I would rather be riding or pay a dealer to remove it. I can change the rear easily enough with the tools I have at home.
So now I guess I will start shopping for a rear sprocket and verify that I can install the 44 without needing a longer chain.
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ninja14
Pro
Posts: 1136
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posted October 30, 2006 01:26 AM
King Kong is from another island.........Godzilla is Japanese and works at the factory..............use an impact gun :-)
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navigator
Expert Class
Posts: 308
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posted October 30, 2006 05:31 AM
quote:
King Kong is from another island.........Godzilla is Japanese and works at the factory..............use an impact gun :-)
I don't have a big enough compressor at home to run the 3/4" impact. That's why I would have to haul everything to the shop. Too much trouble. It's easier to change the rear.
Be careful making statements that contain the word "Japanese". You might offend someone and send this thread to the Smackhouse.
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serius blk
Zone Head
Posts: 543
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posted October 30, 2006 05:49 AM
Hey navi i used a 25 socket with a long breaker bar. I had the bike in gear and someone pressing the rear brake. I had to flatten the washer away from the bolt. I didnt think it was going to come also but i kept putting pressure on it. It finally let go and the 16 went on. I enjoy it. Boy is it fast. Are you coming down this weekend for the Lone Star Rally. Im going to try and put the bike on the dyno this week.
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navigator
Expert Class
Posts: 308
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posted October 30, 2006 06:46 AM
I will probably ride thru with my son. He likes to see all the bikes and people. He's only 4 and doesn't realize yet that noise does not equate to power. And I have to admit that some of those scantily clad Harley chicks (the ones that still have their teeth) are ok to look at.
Where are you going to be hanging out?
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ninja14
Pro
Posts: 1136
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posted October 30, 2006 08:24 AM
quote:
Be careful making statements that contain the word "Japanese". You might offend someone and send this thread to the Smackhouse.
Whatever.........if I said Japs or Nips or slants-eyes or something............it is the accurate political name of the people of that nation. I lived there and nobody took offense and that is the word they use.......
Wih someone holding the rear brake I can remove the nut w/ a breaker bar............but then again I have broken breaker bars :-)
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Denver zx 14
Novice Class
Posts: 70
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posted October 30, 2006 09:36 AM
 Edited By: Denver zx 14 on 30 Oct 2006 11:00
One advantage to installing a 16 T front sprocket as opposed to a 44 Rear sprocket is is the wheelbase length. A 16 moves the wheel back whereas a 44 moves the rear wheel forward. Since the motor is gaining a mechanical leverage advantage with the higher gear ratio and therefore more wheelie prone, I think I would opt for the 16 /41 (2.562) over the17/ 44 (2.588). Smaller(lighter) sprockets also reduce rotating mass which frees up horsepower. Probably the only advantage a 17/44 combination would have over a 16/41 is that the larger sprockets wouldn't tend to bind as the chain goes around the primary . Just my thoughts.
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