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Thread: 7th gear on ZX-14R, ZZR1400

Created on: 06/03/13 06:16 AM

Replies: 12

pavlaras1


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Joined: 12/17/12

Posts: 8

7th gear on ZX-14R, ZZR1400
06/03/13 6:16 AM

Have you ever thought that should have in our bikes 7th gear?
I am thinking it about 5 months now.
Cause i believe that should have changed gear about in every 50km/h.
For example:
1st gear 0-50km/h.
2nd gear 50-100km/h.
3rd gear 100-150km/h.
4th gear 150-200km/h.
5th gear 200-250km/h.
6th gear 250-300km/h.
7th gear 300-350km/h.

Does anyone have meter what is the top speed in every gear and what do you think about 6 or 7 gears?

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streetracer


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Joined: 12/10/12

Posts: 256

RE: 7th gear on ZX-14R, ZZR1400
06/03/13 6:25 AM

I have been thinking in the opposite direction. I think it would suffice to have 4 gears instead of 6. I couldnt imagine a first and second gear as you outlined. How could you keep the front wheel on the ground?



"May your neighbor's respect you, trouble neglect you, angels protect you, and heaven accept you."

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pavlaras1


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Joined: 12/17/12

Posts: 8

RE: 7th gear on ZX-14R, ZZR1400
06/03/13 6:43 AM

I have traction control and the traction control when is enabled doesnt let me to Wheelie. :)
Also the ratio is about not exactly.
For example if it was like this:
1st gear 0-100km/h.
2nd gear 100-140km/h.
3rd gear 140-180km/h.
4th gear 180-220km/h.
5th gear 220-260km/h.
6th gear 260-300km/h.
7th gear 300-340km/h.

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Hub


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Joined: 02/05/09

Posts: 13785

RE: 7th gear on ZX-14R, ZZR1400
06/03/13 6:48 AM

I see a crank throw to wheel speed (((flutter))) the crankshaft.
We are 3100rpm in 6th? That's this side of harmonic is getting close to flutter that mudder.
A twin with bottom torque like a H-D can deal with 4 gears. It's a low rpm engine.
7th gear is me looking for it, but I think any higher gear will make me shoot back to 6th or I'm in the 'beginning harmonics' of that flutter.
So does 6th sort of match [almost] in that window of staying out of it @ 3100rpm?

And R being the R, this puppy is not geared to leave in 6th like the first gen could, let alone 4th waking me up to that gear ratio change [and] that crank rod change.


* Last updated by: Hub on 6/3/2013 @ 6:52 AM *



Tormenting the motorcycling community one post at a time

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pegscraper



Location: UK

Joined: 05/04/12

Posts: 440

RE: 7th gear on ZX-14R, ZZR1400
06/03/13 11:51 AM

IMO the 14 could probably manage with 5 gears. 7 gears are for buzzy, small cc bikes, certainly not a 1400cc+ 4 cyl with lots of bottom end grunt. Who buys a bike like this to be up and down the box all the time? A 7th gear would be utterly pointless, there's no way a standard bike is going to pull to 340k+ and the 14 is a sports tourer when all's said and done, not some state of the art race track refugee.

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pavlaras1


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Joined: 12/17/12

Posts: 8

RE: 7th gear on ZX-14R, ZZR1400
06/03/13 2:17 PM

I do small travels almost everyday.
For example from the city to the beach i do about 100-200km and i drive when the road is empty about 280-300km/h and is too slow for me also.
I need more speed for this kind of daily distances and i prefer a 7th gear just also to drive more economic when i am not in hurry.
In my 6th gear i consume about 6-7l/100km when i go slow about 100km/h and so i wish to had 7th gear to consume 4-5l/100km.

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darryle


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Location: ontario

Joined: 02/15/09

Posts: 1185

RE: 7th gear on ZX-14R, ZZR1400
06/03/13 2:42 PM

280 to 300kph to slow on the street?Interesting,you wouldn't want to tell me where these roads are would you?



2012 14R,full hindle Evolution ,vortex rear sets,BST's with ceramic bearings,HID's,hyper pro damper and custom map 205.3 hp/120.2 torque

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pavlaras1


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Joined: 12/17/12

Posts: 8

RE: 7th gear on ZX-14R, ZZR1400
06/03/13 2:43 PM

Sorry i dont want to tell you.
The only i can tell you is that the road has 5 lanes in one direction and another 5 lanes in the other direction total 10 lanes and the road doesnt have any turns only straight driving for 100km.


* Last updated by: pavlaras1 on 6/3/2013 @ 2:49 PM *

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pegscraper



Location: UK

Joined: 05/04/12

Posts: 440

RE: 7th gear on ZX-14R, ZZR1400
06/03/13 3:12 PM

300k isn't fast enough for you and you also want more economy? I don't get it.


* Last updated by: pegscraper on 6/3/2013 @ 3:13 PM *

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pavlaras1


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Joined: 12/17/12

Posts: 8

RE: 7th gear on ZX-14R, ZZR1400
06/03/13 3:18 PM

I dont want economy when i go on 300km/h but i want economy when i go on 100km/h.

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streetracer


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Joined: 12/10/12

Posts: 256

RE: 7th gear on ZX-14R, ZZR1400
06/03/13 4:32 PM

Pav: Simply change your front and rear sprocket. You will have better economy and higher cruising speed at lower revs.



"May your neighbor's respect you, trouble neglect you, angels protect you, and heaven accept you."

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pavlaras1


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Joined: 12/17/12

Posts: 8

RE: 7th gear on ZX-14R, ZZR1400
06/03/13 5:25 PM

Ok thats sound good ;)
What should i use front and rear?
How many teeths should been front and rear?

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streetracer


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Joined: 12/10/12

Posts: 256

RE: 7th gear on ZX-14R, ZZR1400
06/03/13 7:21 PM

Stock on a 2012 ZX14R is 17/42 which gives you 3397 RPM at 100 KMH. An 18/40 lowers the RPM at 100 KMH to 3056 which is roughly 10 per cent and should give you around the same per cent reduction in fuel used. Some other guys here can probably give you better advice. www.gearingcommander.com will give you lots of information.



"May your neighbor's respect you, trouble neglect you, angels protect you, and heaven accept you."

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