schooligan
Novice Class
Posts: 48
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posted August 08, 2007 03:09 PM
Sprocket changes for the ZX-14
Don't have a 14 but a couple of buddies do. Getting into 1/8 and 1/4 mile drag runs. Why is it that no one mentions about going up on the rear sprockets. Everyone talks about dropping in the front only. I was told long ago that going up in the rear 3 is like going down one in the front. going up in the rear allows for less chance of binding on the front sprocket as the chain tries to turn the tight curve in the front when it has been reduced in sprocket count. What say you????
PS- one of my first bikes was a ZX-6E that was down one in front and up three in rear. Could jump a ZX-11 in 1/8 but of course was swallowed up in the 1/4.
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03 Z1000, two brother slip-ons, down 1 in front
  
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stevewfl
Moderator
Posts: 27920
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posted August 08, 2007 03:14 PM
I say VORTEX!
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2010 Concours14
'08 R1 YAMAHA
ZX14 gone!
CBR600RR track bike
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Fastest-14
Expert Class
Fastest -14
Posts: 354
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posted August 08, 2007 03:23 PM
I agree with you, School. The reason most people that I know usually go down in the front instead of just in the rear alone is because they usually don't want everyone to know how their bikes are geared. (You know the whole saying, "I'm stock") when they really are not. In the front any gearing that you have, whether one down or one up or whatever, is hidden by the stator cover. Whatever gear you have in the rear is in plain view. Another reason for the front sprocket change for some is that a front sprocket is 2 to 3 times cheaper than a rear one. Hope that helps ya.
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schooligan
Novice Class
Posts: 48
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posted August 08, 2007 03:30 PM
thanks fastest, understand for street racing, but when these guys show up at the track stretched, lowered, airshifters sticking out, some even with nitrous, what difference does it make? I agree about the "stock" though. Its amazing what they'll say when your looking right at their bike that has been tricked out! Steve, I 'm a drag dummy, what is VORTEX???
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03 Z1000, two brother slip-ons, down 1 in front
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Fastest-14
Expert Class
Fastest -14
Posts: 354
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posted August 08, 2007 07:22 PM
"School", Vortex is a top brand name sprocket maker as well as other bike accessories. Here is the website. Check it out...www.vortexracing.com.
Click on Vortex Products. They have a whole line of goodies for all types of bikes.
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stevewfl
Moderator
Posts: 27920
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posted August 08, 2007 07:27 PM
quote:
"School", Vortex is a top brand name sprocket maker as well as other bike accessories. Here is the website. Check it out...www.vortexracing.com.
Click on Vortex Products. They have a whole line of goodies for all types of bikes.
+1
99.99% of reputable parts dealers carry VORTEX brand quality race products. I apologize I should've mentioned VORTEX is the major brand :P
____________
2010 Concours14
'08 R1 YAMAHA
ZX14 gone!
CBR600RR track bike
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3boysand3bikes
Expert Class
Posts: 382
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posted August 08, 2007 08:15 PM
Going smaller on the front sprocket by one tooth does change the ratio.... but it does not 'act' like going up two in the back. Think of a 10 speed bike. You can change the front and the back ratios. 6th gear feels easier to pedal than 5th does... even though you have more gear. (Showing my age vecause I think everything is at least a 15 speed now??!!) Going up two teeth in the back will be more prone to wheelie due to the physics. When you go down one in the front, it offers the 'ratio' of going up in the back, but the power delivery is different. Also, on the sprockets that are on these bikes stock, you will not have a problem with the chain binding if you go down just one tooth in the front. If you do both, then you will gain a lot of low end power, and have to fight the wheelies. Now I will admit that I am going from my experience in the 80's and can't be positive that it is still exactly the same... but judging by the people who drag race, they all go down a bit on the front... so I can only imagine that it is the same principle on the new bikes. Going smaller in the front will wear a chain out faster than going bigger in the back. Just my 2 cents... I would like to hear from the drag racers though....
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stevewfl
Moderator
Posts: 27920
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posted August 08, 2007 08:28 PM
 Edited By: stevewfl on 8 Aug 2007 21:31
on our road race track bikes we change the front and the back sprockets. the desired tooth count/ratio depends on the characteristics of the specific track we are racing. we do the 520 size chain and sprockets to shed weight too
Oh, and did I mention VORTEX :P
____________
2010 Concours14
'08 R1 YAMAHA
ZX14 gone!
CBR600RR track bike
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BlackMagic14
Needs a job
Posts: 2058
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posted August 08, 2007 09:08 PM
best place to buy zx14 sprockets www.sportbikezone.com 877-dragbike tell em Matt sent you and yes they are vortex this is Rickey Gadsons shop great people to deal with
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BobC
Pro
Posts: 1736
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posted August 08, 2007 11:20 PM
The other point worth making here is that by going up a few teeth on the rear chainwheel the wheelbase is shortened and you will have to purchase a new chain too. Not neccessary if you keep the standard 41 tooth item and go down to a 16 tooth gearbox sprocket.
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Candy Thunder Blue 2006 ZZR1400
Stock wheelbase
Max: 205.4 mph in 1.25 miles
2012 ZZR1400 in Golden Blazed Green
Brock CT Full System. etc
Max: 203.1 in 1 mile (so far)
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FasterThanStink
Pro
Posts: 1218
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posted August 09, 2007 02:44 AM
quote:
quote:
"School", Vortex is a top brand name sprocket maker as well as other bike accessories. Here is the website. Check it out...www.vortexracing.com.
Click on Vortex Products. They have a whole line of goodies for all types of bikes.
+1
99.99% of reputable parts dealers carry VORTEX brand quality race products. I apologize I should've mentioned VORTEX is the major brand :P
SPAM SPAM SPAM wonderful SPAM.
____________
Speed has never killed anyone,
suddenly becoming stationary...
That's what gets you.
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stevewfl
Moderator
Posts: 27920
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posted August 09, 2007 05:54 AM
Wrong - Naw I don't have an financial interest in VORTEX, I'm just a customer of them and use their parts on my race bike. Sorry if it sounds like spam or a commercial. I'm particular about VORTEX and MICHELIN on my bikes. Fack all the lesser products :P
____________
2010 Concours14
'08 R1 YAMAHA
ZX14 gone!
CBR600RR track bike
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stevewfl
Moderator
Posts: 27920
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posted August 09, 2007 11:55 AM
____________
2010 Concours14
'08 R1 YAMAHA
ZX14 gone!
CBR600RR track bike
|
1badzx12r
Needs a life
Posts: 8321
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posted August 09, 2007 12:13 PM
quote:
Don't have a 14 but a couple of buddies do. Getting into 1/8 and 1/4 mile drag runs. Why is it that no one mentions about going up on the rear sprockets. Everyone talks about dropping in the front only. I was told long ago that going up in the rear 3 is like going down one in the front. going up in the rear allows for less chance of binding on the front sprocket as the chain tries to turn the tight curve in the front when it has been reduced in sprocket count. What say you????
PS- one of my first bikes was a ZX-6E that was down one in front and up three in rear. Could jump a ZX-11 in 1/8 but of course was swallowed up in the 1/4.
THE REASON IS the front cost less....... and you will not need to replace chain like going 6 up on back to dropping 2 down on front
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http://www.youtube.com/watch?v=S06nIz4scvI
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schooligan
Novice Class
Posts: 48
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posted August 10, 2007 10:53 AM
thanks all...good beta. I thought for sure someone would try to call me on the ZX-E comment!!
____________
03 Z1000, two brother slip-ons, down 1 in front
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