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June 21st, 2014, 01:28 PM
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#1 |
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ninjette.org member
Name: C-Bass
Location: Alberta
Join Date: Mar 2014 Motorcycle(s): Currently own: 98 Honda VTR1000, 02 Suzuki's DR200 & DR650, 04 & 08 BUSA's, 05 Ducati SS1000, 12 Ninja 250R SE Posts: 59
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42T rear sprocket installed
The chain adjustment only moved 1-1/2 graduations rearward, so there was no need to break the chain to remove any links. There's still 2 graduations remaining until I run out of adjustment. Now the gearing has been reduced by a factor of 42/45 = 0.93.
The stock 14T engine sprocket was left as is. Previously at 60 mph, engine speed was 9000 rpm. Now engine speed is at 0.93 x 9000 = 8400 rpm at 60 mph.  With the Yoshimura full system exhaust installed, the engine has a few more ponies to pull the taller gearing. I think it's a good balance - no apparent loss in pulling power and the engine is a bit calmer at a 60 mph cruising speed.    
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June 21st, 2014, 02:22 PM
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#2 |
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Board Member
Name: ...
Location: WI
Join Date: Dec 2011 Motorcycle(s): 250R (street), 250R (dirt) Posts: A lot.
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June 24th, 2014, 03:52 PM
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ninjette.org sage
Name: Brian
Location: Orange County, CA
Join Date: Apr 2012 Motorcycle(s): '12 ninja 250r Posts: 762
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Those ticks mean squat.
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June 24th, 2014, 04:30 PM
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The Corner Whisperer
Name: Chris (aka Reactor)
Location: Northern KY
Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much.
MOTY 2015, MOTM - Nov '12, Nov '13
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Quote:
 Some are waaaayyyyy off, others are spot on.  It's one of those things one learns about their own bike.Hope you like the 42, it's my fav rear sproc to run.
__________________________________________________
Goal: Shake A Million Hands | Look through the corners | Track Day Prep | Closest track? | The Mid-Ohio School |
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June 24th, 2014, 05:16 PM
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#5 | |
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Board Member
Name: ...
Location: WI
Join Date: Dec 2011 Motorcycle(s): 250R (street), 250R (dirt) Posts: A lot.
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Quote:
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June 24th, 2014, 05:23 PM
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#6 |
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The Corner Whisperer
Name: Chris (aka Reactor)
Location: Northern KY
Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much.
MOTY 2015, MOTM - Nov '12, Nov '13
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I could go either way and be happy, 14t or 15t on the front. I used to ride a HD so I like a bit calmer engine cruise rpm, unless I am on the r6... the scream on.
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Goal: Shake A Million Hands | Look through the corners | Track Day Prep | Closest track? | The Mid-Ohio School |
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June 25th, 2014, 05:06 AM
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#7 | |
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CPT Falcon
Name: J.Emmett Turner
Location: Newnan, GA
Join Date: Apr 2009 Motorcycle(s): '08 CP Blue EX250J, '97 unpainted EX250F, 2nd '97 unpainted EX250F (no engine), '07 black EX250F Posts: A lot.
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Quote:
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June 25th, 2014, 05:40 AM
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#8 |
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Board Member
Name: ...
Location: WI
Join Date: Dec 2011 Motorcycle(s): 250R (street), 250R (dirt) Posts: A lot.
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my ticks are spot on.
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