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Old 07-29-2014, 12:02 AM   #1
conanony OP
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Joined: Jan 2012
Oddometer: 11
Question 990 Adv - rpm/speed in gears?

Hi all, I've been looking for the rpm values in each gear at certain speeds with different sprockets for the 990 Adventure but haven't found very much so far.

For example something like this: http://www.f650gs.crossroadz.com.au/Calc-MPH.html but for the 990?

I did find these for the gear ratios:
.............990 ADV........
1st.............12:35.......
2nd.............15:32.......
3rd.............18:30........
4th.............20:27........
5th.............24:27.......
6th.............27:26......
Primary.......35:67........
Secondary..16:42........

but am looking for the rpm values with various sprockets at 100km/h (60mph), 120km/h (75mph), etc?
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Old 07-29-2014, 12:27 AM   #2
Sumi
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http://www.gearingcommander.com/
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Old 07-29-2014, 12:34 AM   #3
conanony OP
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Found that but it wouldn't load, now it does, thank you
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Old 07-30-2014, 03:29 AM   #4
roookie1
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16/42

6. speed.
4000 rpm 100 km/h
5000 rpm 126 km/h

Thats all i can remember right now..
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Old 07-30-2014, 10:21 AM   #5
j.king
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Joined: Jun 2011
Location: Santa Cruz Mountains - SLV
Oddometer: 50
after changing to 16/45

stock was 16/42 i believe
that got me about 80mph @5k
and pretty straight down the gearbox in 10mph increments:
5th - 70 @5k etc...

went with 16/45 for lower gearing off-road. so far pretty happy with the change. it does help on single track and rock-crawling type stuff to have first gear that bit lower.

on the highway it isn't really all that much worse.
5k in top gear is now around 75-76

somebody who works out the ratios in their head might tell me this is all wrong but its my story and im sticking to it.

also - older gearing was with 50/50 or street biased tires and the new gearing is almost always knobbies - so that does make a difference as well....
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Old 07-31-2014, 11:30 PM   #6
conanony OP
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Thanks, that's useful. Wanted to know what my cruising rpm will be with various sprockets.
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