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Offline Rustyblack

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17 tooth front sprocket
« on: January 20, 2021, 03:51:09 PM »
 :465:  Is it worth going up to a 17 tooth front sprocket  as I do a lot of motorway miles and would like to improve mpg a bit if possible. 

Anyone got good or bad feedback please?
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Offline 1284rider

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Re: 17 tooth front sprocket
« Reply #1 on: January 20, 2021, 04:09:23 PM »
Definitely - one of the best mods you can make in my opinion if you just ride on road. 

Offline AvgBear

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Re: 17 tooth front sprocket
« Reply #2 on: January 20, 2021, 10:52:53 PM »
*Originally Posted by Rustyblack [+]
...I do a lot of motorway miles and would like to improve mpg a bit if possible. 
Anyone got good or bad feedback please?
How fast motorway miles?
Whilst gearing up / taller reduces engine revs, it may or may not improve mpg?
Some may prefer a more relaxed engine but that may not necessarily get higher mpg?
At some speeds, the throttle plates may need greater opening to maintain a certain speed due to greater loading / wind resistance?
The Tiger800 ain't slippery / sleek...
« Last Edit: January 20, 2021, 11:04:22 PM by AvgBear »
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Online ramondevic

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Re: 17 tooth front sprocket
« Reply #3 on: January 21, 2021, 07:49:37 AM »
*Originally Posted by Rustyblack [+]
:465:  Is it worth going up to a 17 tooth front sprocket  as I do a lot of motorway miles and would like to improve mpg a bit if possible. 

Anyone got good or bad feedback please?


I did exactly the opposite, I put a 15 tooth sprocket to have shorter gears to get better off-road.

On this page you can calculate the speed you will earn.
https://www.gearingcommander.com





Offline OHRider

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Re: 17 tooth front sprocket
« Reply #4 on: January 21, 2021, 09:24:51 AM »
*Originally Posted by Rustyblack [+]
:465:  Is it worth going up to a 17 tooth front sprocket  as I do a lot of motorway miles and would like to improve mpg a bit if possible. 

Anyone got good or bad feedback please?

I did it and love it.  :417:
Thanks

Al

Offline ped

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Re: 17 tooth front sprocket
« Reply #5 on: January 21, 2021, 02:35:00 PM »
i did it excellent and cheap mod and it doe's give me better mpg
 :001:

Online fac191

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Re: 17 tooth front sprocket
« Reply #6 on: January 22, 2021, 07:42:28 PM »
Keep it under 80mph clock speed and its ok. Above that and it starts to drink it.

Offline Paulhere

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Re: 17 tooth front sprocket
« Reply #7 on: January 22, 2021, 08:09:23 PM »
*Originally Posted by ped [+]
i did it excellent and cheap mod and it doe's give me better mpg
 :001:

What mpg did you get, before & after?
Current bikes Tiger800 XRx, Tiger Sport 1050, Ariel FH 650, Yam Serow 225.

Offline applecorp

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Re: 17 tooth front sprocket
« Reply #8 on: February 01, 2021, 08:33:34 AM »
I'm interested in this mod as I feel first gear is too short for my 100% road use.

Does it not affect the speedometer though?

Online Stevie.P

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Re: 17 tooth front sprocket
« Reply #9 on: February 01, 2021, 11:31:45 AM »
*Originally Posted by applecorp [+]
Does it not affect the speedometer though?

No, because the speedo is calculated via the rear ABS sensor signal, so wheel revolution, not gearbox output, dependant. The 'Gen 1' pre-2015 Tiger was driven off the gearbox output shaft though.  :028:
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