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Offline Supernam

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Re: Front and rear sprocket sources
« Reply #10 on: October 04, 2014, 02:19:36 AM »
*Originally Posted by Defender >>>> link hidden <<<<
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Supernam, one thing to be aware of(you may be already) is that your chain will be near the end of the adjusters ,unless you remove links. It's ok like that & you can resize the chain when you're happy with the sprocket. I think you will be.

If that is the case then maybe I will wait until the current chain/sprockets wears out a bit then replace both at the same time. How long does the chain/sprocket last for on this bike?

Offline jsonder

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Re: Front and rear sprocket sources
« Reply #11 on: October 09, 2014, 02:34:34 PM »
*Originally Posted by Supernam >>>> link hidden <<<<
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If that is the case then maybe I will wait until the current chain/sprockets wears out a bit then replace both at the same time. How long does the chain/sprocket last for on this bike?

Should be about 25000 miles, but not really less than 20000 miles unless you really are doing a lot of hard "on->off" and "off->on" throttle transitions.  The engine is so smooth that the gear train (assuming downshifts are also smooth) isn't getting that much sudden stress which tends to wear the sprockets. 

Conversely, I needed to change the chain and sprockets on my dirt bike a tad before 9K miles.  The drive sprocket teeth were getting a curve worn into them.  That bike is always ridden at near full throttle and downshifts are not always as smooth as they should be. 
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Offline Defender

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Re: Front and rear sprocket sources
« Reply #12 on: October 09, 2014, 03:52:23 PM »
Supernam, seriously, I wouldn't worry too much about the chain, there's still some adjustment left. Do the sprocket change yourself, and run it until you're out of adjustment, then, if there's life left in the chain, get a workshop to shorten it for you. Honestly, it's such an improvement you'll love your X even more than before, and if you don't, you can still go back to 41T. Whereas if you wait, then buy a shorter chain, you can't revert as easily. Just my thoughts on it, but it was the best mod I did, and cheap too.
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Offline Johnsy

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Re: Front and rear sprocket sources
« Reply #13 on: November 08, 2014, 05:00:50 AM »
So after 7,000 klm's travelling from northern Thailand to the Moto GP at Sepang around Malaysia and back the combination of 16t front sprocket and 39t rear it is an improvement I wish I made when I first bought the bike. I spent half the trip 2 up plus luggage and half the trip solo with luggage as the gf had to fly back for work. 2 up with luggage through the steeper twisties was sometimes hard work for the bike and I needed to rev the gears out a little harder but all in all the gear ratios were far more usable and better than the stock 15t front and 41t rear. Solo with luggage roll on - roll off through the corners was smoother and there was much less gear changing and hard work keeping the bike at optimum revs and performance. With the stock gearing it seemed second or third gear was either too low or too high for tight corners, now entering and exiting a corner in either second or third gear gives the bike a much better and longer rev range. Sure the bike isn't quite as punchy anymore but I found that punchyness a pain, as the bike is either revving it's head off or labouring in corners. The bike still pulls hard (for a 500cc) with the 16t and 39t and revs out but it has a far more rider friendly and usable rev range now. 
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Offline Grim Rider

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Re: Front and rear sprocket sources
« Reply #14 on: November 08, 2014, 07:17:03 AM »
Interesting post Johnsy. Have you found any difference to the fuel economy? Where did you source the 16T front sprocket from in the end?  :028:
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Offline Defender

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Re: Front and rear sprocket sources
« Reply #15 on: November 08, 2014, 10:33:56 AM »
Johnsy, good review of a worthwhile mod. Useful info which may encourage others to follow suit. It's still a matter of personal requirement, but you've proved it viable under various conditions. It does seem to make the X more user friendly.
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Offline Matt F.

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Re: Front and rear sprocket sources
« Reply #16 on: November 08, 2014, 01:53:25 PM »
I'm sure this question will exposes me for the neophyte I am, but in the most simple terms, what is the benefit of the gearing change?  Does it simply take you down some rpms (and thus let you up shift later)?

In terms of super low speed, bumper-to-bumper commuting, would I be correct in thinking the stock gearing may be beneficial?  I do an unfortunate amount of time feathering in and out of first and would hate to make that less smooth.

Thanks in advance for putting up with the new guy.

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Offline Johnsy

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Re: Front and rear sprocket sources
« Reply #17 on: November 08, 2014, 03:06:55 PM »
*Originally Posted by Grim Rider >>>> link hidden <<<<
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Interesting post Johnsy. Have you found any difference to the fuel economy? Where did you source the 16T front sprocket from in the end?  :028:

To be honest I didn't even look at fuel differences but I guess with the 16t and 39t it would have to be marginally better, top end speed you're doing around 10 klm's p/h more at the same rev range.
I ordered the 16t front sprocket via email from the sprocket specialists in the USA, about $27 plus postage, (part number 659-16) and received it in 7 days, excellent service and quality product.
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Offline Johnsy

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Re: Front and rear sprocket sources
« Reply #18 on: November 08, 2014, 03:15:18 PM »
*Originally Posted by Matt F. >>>> link hidden <<<<
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I'm sure this question will exposes me for the neophyte I am, but in the most simple terms, what is the benefit of the gearing change?  Does it simply take you down some rpms (and thus let you up shift later)?

In terms of super low speed, bumper-to-bumper commuting, would I be correct in thinking the stock gearing may be beneficial?  I do an unfortunate amount of time feathering in and out of first and would hate to make that less smooth.

Thanks in advance for putting up with the new guy.
The only slight problem with the 16t and 39t was take off on a hill with passenger and luggage, you had to slip the clutch just a bit but not really an issue. I think solo without luggage in peak hour commute traffic it's not going to be a problem either, in fact I think you will find it better because you won't be constantly changing from first to second or second to first as much because the 16t & 39t will give you greater usability through the rev range. You could always try a 16t front and keep the 41 rear and see if that suits and if you want a bit more rev range change the rear to a 39 later. Hope that helps.
Cheers,
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Offline Grim Rider

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Re: Front and rear sprocket sources
« Reply #19 on: November 08, 2014, 05:47:18 PM »
*Originally Posted by Johnsy >>>> link hidden <<<<
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To be honest I didn't even look at fuel differences but I guess with the 16t and 39t it would have to be marginally better, top end speed you're doing around 10 klm's p/h more at the same rev range.
I ordered the 16t front sprocket via email from the sprocket specialists in the USA, about $27 plus postage, (part number 659-16) and received it in 7 days, excellent service and quality product.
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Thanks Johnsy - sent them an email. Have you found it affects accuracy of speedo at all (am thinking 16T front likely to make it more accurate as overreads as standard when compared to GPS)?
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