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Quick Shifters

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chickenstrip
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PostPosted: 09:13 - 26 Mar 2014    Post subject: Quick Shifters Reply with quote

I've never ridden a bike with one of these, and wondered what's the crack? Is there any point for road use? Just curious.
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Wafer_Thin_Ham
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PostPosted: 09:17 - 26 Mar 2014    Post subject: Re: Quick Shifters Reply with quote

chickenstrip wrote:
I've never ridden a bike with one of these, and wondered what's the crack? Is there any point for road use? Just curious.


They make a good sound. That's about the only advantage for road use.

Basically they work by cutting the spark as you shift, this unloads the transmission for a split second meaning that the gear can slot home and you can keep the throttle pinning. Saves you time each shift. No clutch required either.
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chickenstrip
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PostPosted: 10:27 - 26 Mar 2014    Post subject: Reply with quote

Thanks for that W-T-H.
One of the reasons I'm asking is that a mate of mine nearly upgraded his Fazer 600 for an FZ1 with a lot of cool mods on it, including a shifter. The deal didn't go through, but he's said he still maybe will go for an FZ1 when the right one comes along, and then said his first mod will be a quick shifter. I just thought it wouldn't be the first thing I'd do, not by a long shot, and all this just generally aroused my curiosity as I realised I don't really know anything about them.

I'm far from the fastest rider on the road, although I have been known to have a "spirited" ride (think that's the accepted turn of phrase here? Laughing ) now and again, so I also wondered if the things would be of any use to me, bearing in mind that most of my riding is distance for pleasure. And of course, it's nice to learn something Very Happy
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MarJay
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PostPosted: 10:28 - 26 Mar 2014    Post subject: Reply with quote

I can see their use for drag racing or even short circuit racing where every hundredth of a second counts, but for the road? Tart factor, nothing else.
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sabian92
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PostPosted: 10:47 - 26 Mar 2014    Post subject: Reply with quote

Considering you can clutchless shift on a bike anyway, using one of the road is a bit pointless. As long as you do it properly it's not any worse for your gearbox than using a clutch.

Using one on the road is pointless considering once you get above 250cc bikes you're pretty much faster than anything else around you.

On a track, I'd use one but that's the only time I'd use one and if I had a track bike it probably wouldn't be road legal anyway.
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chickenstrip
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PostPosted: 10:52 - 26 Mar 2014    Post subject: Reply with quote

Am I right in thinking that some new road bikes now come with a shifter fitted as standard though? Why would this be desirable?
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lihp
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PostPosted: 10:59 - 26 Mar 2014    Post subject: Reply with quote

They're there to sell bikes.

The majority of the cheaper ones and race orientated ones just don't work well anywhere other than near the redline at full throttle.

As depending on engine speed and load the amount of ignition cut needed varies, some can be tied into ECU's so the computer can adjust based on an algorithm.

Most aftermarket ones are set up to work where they were designed to be used, full throttle at the top end of the revs
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fozzym
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PostPosted: 11:08 - 26 Mar 2014    Post subject: Reply with quote

I saw one on a zzr1400 the other week, like its needs that extra tenth of a second!

Fair play though I think a quick shifter would be a good thing on a track bike if only for the fact that it gives you one less thing to think about.

When I've done track days I have so much going on in my head that often I bugger an up shift, not having to worry about it I guess would only help.

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Jayy
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PostPosted: 17:13 - 26 Mar 2014    Post subject: Reply with quote

They are cool though.

Upside down gears, quick shifter and quick action throttle makes for pinning it in a straight line fun.

I'd put one on the next bike as well.
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lihp
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PostPosted: 17:33 - 26 Mar 2014    Post subject: Reply with quote

ZX Jay wrote:

Upside down gears, quick shifter and quick action throttle makes for pinning it in a straight line fun.


It makes it absolutely pointless Laughing
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chickenstrip
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PostPosted: 17:40 - 26 Mar 2014    Post subject: Reply with quote

PhilDawson8270 wrote:

It makes it absolutely pointless Laughing


What's your experience of shifters Phil? I take it you found them superfluous for on the road?
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lllN30lll
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PostPosted: 18:30 - 26 Mar 2014    Post subject: Reply with quote

I won't ride a bike without one now.
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lllN30lll
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PostPosted: 18:33 - 26 Mar 2014    Post subject: Reply with quote

I found this video, of some bloke with the same bike as me, and the same exhaust. You can hear his quickshifter and how he doesn't have to drop throttle.

https://www.youtube.com/watch?v=kW7SstWM4RQ
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Nemo
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PostPosted: 19:16 - 26 Mar 2014    Post subject: Reply with quote

Quick shifters are pretty useless for the road in my opinion, I may go as far as fitting a slipper clutch and that's about it.
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lllN30lll
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PostPosted: 19:28 - 26 Mar 2014    Post subject: Reply with quote

Have you tried one Nemo?
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chickenstrip
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PostPosted: 19:58 - 26 Mar 2014    Post subject: Reply with quote

sabian92 wrote:
Considering you can clutchless shift on a bike anyway, using one of the road is a bit pointless. As long as you do it properly it's not any worse for your gearbox than using a clutch.



There is no way on Earth you can do a clutchless gear change as quickly and smoothly as a quick shifter changes.

True? Sounds right to me as it's done at speeds of electronic circuitry, and there's no need to ease the throttle at all - more time saving.
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Nemo
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PostPosted: 20:06 - 26 Mar 2014    Post subject: Reply with quote

_Iain_ wrote:
Nemo wrote:
I may go as far as fitting a slipper clutch and that's about it.


On your 90,000 mile NTV? The one where the gearbox whines more than I do?

Somehow I feel the money may be better spent elsewhere Laughing


Obviously not, tard.

And yes I have tried q.shifter and s.clutch together and seperate.

They're an awesome bit of kit don't get me wrong, but not entirely sure it's worth the money if you don't use the bike on the track at all.
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lihp
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PostPosted: 20:34 - 26 Mar 2014    Post subject: Reply with quote

chickenstrip wrote:
PhilDawson8270 wrote:

It makes it absolutely pointless Laughing


What's your experience of shifters Phil? I take it you found them superfluous for on the road?


How many gear changes can you make with the throttle pinned before it gets dangerous?

Why bother changing to race pattern? Race pattern is down to go up to increase ground clearance at maximum lean so you don't need to hook the boot under the lever at max lean to shift up in corners.

Why are these any use on the road?
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lihp
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PostPosted: 20:37 - 26 Mar 2014    Post subject: Reply with quote

chickenstrip wrote:

There is no way on Earth you can do a clutchless gear change as quickly and smoothly as a quick shifter changes.

True? Sounds right to me as it's done at speeds of electronic circuitry, and there's no need to ease the throttle at all - more time saving.


Bit at the speeds of electronic circuitry, it's done at the minimum speed the transmission requires to change the gear.

But yes, entirely correct that they are quicker than clutchless shifts. However, we're talking hundredths of a second, worth less than 1 tenth over a lap, at what point on the road is a hundredth of a second an advantage. Are you going to use it all the way up to top gear with the throttle pinned?

They are impressive, they are quite cool, but they offer no useful advantage on the road.

(I would still have one, but still I admit it would be for the tart factor, I will not pretend it is useful on a road)
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NooBish-AbbZ
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PostPosted: 22:16 - 26 Mar 2014    Post subject: Reply with quote

lllN30lll wrote:
I found this video, of some bloke with the same bike as me, and the same exhaust. You can hear his quickshifter and how he doesn't have to drop throttle.

https://www.youtube.com/watch?v=kW7SstWM4RQ


that sounds beauuutiful
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UrbanRacer
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PostPosted: 22:31 - 26 Mar 2014    Post subject: Reply with quote

Quickshifters are great, even on the road they are useful.

New bikes are starting to come with them however some are more shit than others. The S1000RR for example has the worst quickshifter i have ever used, It causes damage to the gearbox, wont shift under certain conditions and causes loss of power usually at the worst possible times. for example on track on the a main straight at 150mph and you almost end up over the bars.

The best one to go for is an HM quickshifter, Dynojet do one also that plugs into a Power Commander.
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CHR15
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PostPosted: 22:49 - 26 Mar 2014    Post subject: Reply with quote

ive got whatever the newest version of the one translogic do is on my mille. works great after a bit of twiddling to get it set up right.

i'll definitely fit one on anything i get in the future.

there handy on boosted things because you dont get any boost drop when changing gears.
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Philly46
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PostPosted: 01:35 - 27 Mar 2014    Post subject: Reply with quote

Useless for the road? GTFO.

Same boat as fathead, won't ride without one. Hooning is great when you can whack the throttle open and not have to release it to change gear.

Next you'll tell me my QAT is pointless. Rolling Eyes
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trevor saxe-coburg-gotha
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PostPosted: 03:45 - 27 Mar 2014    Post subject: Reply with quote

Timely thread. Gonna get one put on the vanvan.
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