Gearing question
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  1. #1
    Hooligan SquireSCA's Avatar
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    Gearing question

    I believe that on the newer models they played with the internal gear ratios?

    I have a 2017 Speedy S model, Arrow cans(although they sent the wrong ones, these have welded in dB killers, waiting on the right ones to come in to swap them out)... Added the frame sliders, waiting on the quickshifter to arrive from the UK... Took off the passenger pegs and popped on the rear seat cowl and belly pan... Not really much else to do to this bike, I ordered it with the accessories that I wanted, so not much to tinker with.

    My question is, does this bike really need any sprocket changes like bikes from earlier years? I know that it's always "subjective", but I figure that others have likely played around with it and "know what works best"...

    I was considering swapping out the rear from a 43t to a 45t from SuperSproxx or one of those places... Extra acceleration is nice, but I know that there is a tipping point where the extra poke is offset by the fact that you have to shift a lot more often as you run out of revs quicker...

    So what's the recommendation here? 17t front or 45t rear, or just leave it alone?

    I believe that theoretical top speed on this bike is only like 157mph with stock gearing, and going to a 45t rear only drops it to 150mph...

  2. #2
    Chicken Strips Oahu Triple's Avatar
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    I find the gearing on my '14 S3R just right for the kind of riding we have here...I can do slower corners in second gear that would have had me downshifting to first in my 14t front sprocket geared 2010 Streetfighter.

    I know apples to oranges, but that's my perspective...
    -you only live once and I feel like I'm running out of time...

  3. #3
    Hooligan SquireSCA's Avatar
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    Yeah, the Streetfighters didn't like to go below 4000rpm without lugging and rattling your fillings loose. haha

    Gearing is a tough question to answer... I wouldn't mind more acceleration, but at the same time I don't want to have to shift up to 2nd before I reach the end of my driveway. :-)

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    The "Friends" of Officer Frank Poncherello Joe Houle's Avatar
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    I wouldn't go down in the front, just up in the back.

    Personally I would ride until mid-summer, get everything bedded in, then go up in the back. You will know in the first 10min if you like it or not
    Quote Originally Posted by Bryanc123 View Post
    Speedtriple.com is like motorcycles meets Monte Python from what I've seen, you either get it or you don't.

  6. #5
    Hooligan SquireSCA's Avatar
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    Yeah, I might just do that. I usually like to go down 1 tooth in the front so that it moves the wheel back a tad, that way the extra drive isn't just wasted with more wheelies...

    I know the concern about the chain rubbing on the swingarm, but what is the actual difference in the diameter between a 17t and an 18t? Like... 1/8 of an inch? Can't be much, can it?

  7. #6
    The "Friends" of Officer Frank Poncherello antisocial's Avatar
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    it already does rub the swingarm, that is what those plastic thingies are for. no worries. I personally have not felt the need to mess with the gearing on my old 09, or my current 12. like Joe said, ride it before you mess with it. it won't take long to figure out what you want to change. It also would not be a bad idea to do what you are going to do exhaust wise before messing with gearing, as the weight reduction and slight power increase will give you a better idea as to what you have vs. where you want to be in terms of acceleration.
    Ha! You came to the wrong place talking that shit. We missing bone, spleens, testicles, and common sense from riding bikes.

  8. #7
    The "Friends" of Officer Frank Poncherello Bad Santa 1050's Avatar
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    Food for thought - the Pre 2011 bikes ran 18/42 gearing, whilst the 2011 and newer went to 18/43. On my older gen 1050, going to 18/43, gave it a noticeable and appreciable increase in pep.

    The likes of Joe H and Sparti have both gone 18/45 on their first gen 1050s and seem quite satisfied with the change.
    Considering the current model stock Speedies are making at the wheel, about the same as our first gen 1050 bikes made at the crank in stock form, the question is do you really need the gearing change - especially after the mods/arrow pipes and remap? Considering you are coming from more powerful bikes, perhaps you do...

  9. #8
    Hooligan SquireSCA's Avatar
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    How much does the arrow cans and pipe really make, though? An extra 2hp? I don't think it is anything significant, it is more about the look, sound and a few lbs of weight, right?

    I will ride it around and see how I like it, and maybe order up a 45t rear and swap that out and see how it changes things. The rear is the simpler one to swap on these bikes, right? No need to pop the wheel off, just loosen the chain, remove 6 bolts and slide it off, right?

  10. #9
    Squidly Diddlers Mucus's Avatar
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    Quote Originally Posted by SquireSCA View Post
    How much does the arrow cans and pipe really make, though? An extra 2hp? I don't think it is anything significant, it is more about the look, sound and a few lbs of weight, right?
    The installation of a BMC air filter would do that performance upgrade.....

    M

  11. #10
    The "Friends" of Officer Frank Poncherello Bad Santa 1050's Avatar
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    Quote Originally Posted by SquireSCA View Post
    How much does the arrow cans and pipe really make, though? An extra 2hp? I don't think it is anything significant, it is more about the look, sound and a few lbs of weight, right?

    An excellent question...

    I know from first hand experience with the 05-06 models, going from OEM mufflers to aftermarket Micron Dual High mount mufflers shaved off about 8-9 pounds in weight, and once the bike was remapped on the dyno it gained about 12HP (112 stock, up to 124).

    The question is, how good is the factory Arrow generic tune, and how well will it suit the bike vs a bespoke dyno tune.
    It'd be interesting to see back to back runs, of standard exhaust to set the base line, then Arrow Pipes with no remap, then with Factory Generic Arrow map. Personally I'd be wanting more than just a couple HP considering the cost of the arrows. From memory, Chewies 06 bike with Arrow Dual highs made about 129HP after dyno tuning, so a relative gain of 13-15HP.

 

 
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