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RX100 - 5th gear Modification
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sticking to the same final drive ratio of the 100, you can fix the 5 speeds 5 th ratio on the RX100, will give 5-7kms more speed with not much lost on breath
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Originally posted by atul_astro View Postalso, AFAIK, the 5th gear of 5 speed = 4th gear of 4 speed. The final drive ratio is 0.97
Cheers
AtulOriginally posted by jd666 View Post^^ nope because like atul pointed out, the final drive ratio is the same.. so what you get with a 5 speed gearbox is more closely spaced ratios for better driveability in the city. Thats all.
Dunno about the final drive ratio, but the top gear for 4 speed is 23:23 ie 1:1 and for 5 speed is 22:24 ie 0.91
Also the rx100 and the rx135 have the same gear ratios ....
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What excatly do you need? If it is sproketing you are worried about, then stick to the stock 16/34 setup, doesn't matter if it is 4-speed or 5-speed, as long as your 4-speed bore is stock.Originally posted by xxbomb View Postsorry to bump this ancient thread....am planning to add in 5th gear to my rx 135 4s, everything stock except that its running on rx-k sprocket. Its one of the last bikes from the Yamaha stable..(those with golden color and 5speed like looks of engine + funny looking speedo :P ).
Some pointers and help would be appreciated.
And i loved the quote in the signature area. Grenade launcher !!! LOL.... Seriously.......
May i know from which thread this was??
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sorry to bump this ancient thread....am planning to add in 5th gear to my rx 135 4s, everything stock except that its running on rx-k sprocket. Its one of the last bikes from the Yamaha stable..(those with golden color and 5speed like looks of engine + funny looking speedo :P ).
Some pointers and help would be appreciated.
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16-34 is way too tall for a 100cc(even if something special done to engine),
punching torque & Greatest acceleration...
how about a final drive of 15-42/15-44, with a fifth cog!!!
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But tell me something, is it a world of difference? Does that one pin make a visible notice?Originally posted by psycho 98 View PostMight be, buttttt i had bought OE sprockets of 5 speed one year back which says 16/38, may be the 16/38 was for 5 speeds and 15/38 was for z's again not sure here.
Yes, I firmly believe you're right on the shorter rear part because when the vehicle was modded in 2007, the mech changed the sprockets & the acceleration was & is still really great.Originally posted by psycho 98 View PostNot much gains though yea but you will notice some difference. according to me the shorter the rear sprocket more the torque and acceleration. with shorter rear sprocket the power is being transfered fast to rear wheels in less time compared to bigger sprockets. but i would rather suggest keep the front size 16 and play around with rear and see which suits you the best in terms of acceleration.
Yeah, should be. But give me few days of time, when I'll be removing the old sprocket set & I'll update you with the precise count.Originally posted by psycho 98 View PostIf its an OE pack its should be 16/34.
Finally what do you recommend for my requirement?
1. I want a punching torque
2. Greatest acceleration & would like to remain less or Max 100 not anymore
I hope the 16-34 should do the work isn't it?
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Might be, buttttt i had bought OE sprockets of 5 speed one year back which says 16/38, may be the 16/38 was for 5 speeds and 15/38 was for z's again not sure here.Originally posted by aargee View PostBetting beer to dollar - original size of 5 speed sprocket is 15T/38T - just back after checking the spares
Not much gains though yea but you will notice some difference. according to me the shorter the rear sprocket more the torque and acceleration. with shorter rear sprocket the power is being transfered fast to rear wheels in less time compared to bigger sprockets. but i would rather suggest keep the front size 16 and play around with rear and see which suits you the best in terms ofOriginally posted by aargee View Postbetween 15-38 & 16-38 - can we notice the top speed/acceleration considerably or marginally? Again the same question with 16-34 & 16-38?
acceleration.
If its an OE pack its should be 16/34.Originally posted by aargee View Postnow I run on 34, not sure if its 16 or 15 on the frontal.
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Betting beer to dollar - original size of 5 speed sprocket is 15T/38T - just back after checking the spares
Switching between 15-38 & 16-38 - can we notice the top speed/acceleration considerably or marginally? Again the same question with 16-34 & 16-38?
Right now I run on 34, not sure if its 16 or 15 on the frontal.Last edited by aargee; 05-07-2010, 04:58 AM.
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I would say try 16/34 first, if you are not satisfied change to 16/38.
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^^ i would like a higher speed and a lower engine rpm.. dont mind sacrificing some acceleration for it.. so i think ill try 16/38, depending on whats already on, coz a 15/34 is a higher ratio than 16/38 as is.
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15/37
on RX100 if you use the 5 th gear from 135 then you will have
4th 1:1
5th 1:0.917
you can use the gear on levels, inclines (!!!) , or if you use a 15 teeth front sprocket your bike will be a screaming monster..what say ?Last edited by satishg; 05-06-2010, 10:07 PM.
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