April 27th, 2016, 02:53 PM | #201 | |
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April 27th, 2016, 02:58 PM | #202 |
ninjette.org member
Name: JJ
Location: USA
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I finally got the little beast back out to the track again after being down for 9 months with a broken transmission. It stopped shifting into 5th gear at Road America last July, and we finally got around to tearing it apart over the winter to check things out. The dogs on the tranny gears are really weak in these things, and they're poorly cast with rounded edges, so not very conducive to good shifting under high load. I know a lot of peope have had problems with slipping out of gear and otherwise sloppy shifting on Ninja 300 track/race bikes. We got 3rd-6th gears back-cut and hardened, and now after running it on the track for the first time earlier this week, it's 1000% better! Shifts crisp and solid every time now, just like a "normal" sportbike! Ready for the TrackAddix GP races at Motorsports Park Hastings in 2 weeks!
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April 27th, 2016, 07:21 PM | #203 |
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Good to hear you're back out and at it! That little bike is a beauty!
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April 27th, 2016, 07:38 PM | #204 | |
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April 28th, 2016, 07:55 PM | #205 |
ninjette.org member
Name: JJ
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April 29th, 2016, 06:32 AM | #206 |
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Name: Aaron
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How much did the transmission modifications cost you?
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April 29th, 2016, 11:33 AM | #207 | |
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Thanks, Dave |
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April 29th, 2016, 11:37 AM | #208 |
Vintage Screwball
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Anyone who wants to know more needs to talk to the guy in this thread:
https://www.ninjette.org/forums/showthread.php?t=240374
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April 29th, 2016, 04:19 PM | #209 |
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Name: JJ
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April 29th, 2016, 04:23 PM | #210 | |
ninjette.org member
Name: JJ
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http://www.rcsperformanceonline.com/ It was about $400-$450 if I remember correctly. |
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April 29th, 2016, 05:14 PM | #211 |
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Name: snot
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Bike looks great, glad you got it back up and running.
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May 18th, 2016, 11:07 AM | #212 |
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First race of the season is now in the books, this one was at Motorsports Park Hastings, and I had the worst start of my racing career! (Well, I take that back, the WORST start was stalling on the grid at a CCS MWGT race in 2007 and getting clocked from behind by another bike and then spending 4 months on crutches!) We run an Expert / Amateur split grid for the Lightweight GP races, I started at the back of the Expert grid and was passed by 2 Amateurs before Turn 1! 8-lap sprint race, I clawed my way back up to 4th by the end, but the leaders were GONE! Still have another 1-2 secs to pick up in order to win again, I'm switching to a 415 chain setup before next time, we'll see what that does. I did have it tuned for MR12 and ran that last time, but it made no difference in the real world, so I'm going to stick with regular 100-octane race fuel at $6/gal rather than $27/gal for MR12.
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May 18th, 2016, 11:21 AM | #213 | |
Board Member
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The MR12 really made no difference? |
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May 18th, 2016, 04:05 PM | #214 |
ninjette.org member
Name: geno
Location: granite city
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if your motor has stock compression, run 87 octane you will loose performance with 100 octane in a stock compression motor, the mr12 should have made 2hp more and accelerated quicker than the pump gas, overlay your two dyno runs and compare the acceleration
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May 19th, 2016, 12:52 PM | #215 |
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May 19th, 2016, 12:54 PM | #216 |
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I have JE high-comp pistons, JE said 94 octane or higher to prevent detonation. The dyno showed 3HP difference, but that didn't translate into the "real world" performance on the track where it really matters. I might run it when I go to race at Road America in July, but other than that I'm just going to run my mix of 100-octane and 92 pump premium.
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May 20th, 2016, 06:49 AM | #217 | |
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June 12th, 2016, 11:55 PM | #218 |
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June 13th, 2016, 09:42 AM | #219 |
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Just curious, what's the difference between the two Ohlins rear shocks?
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July 9th, 2016, 08:43 AM | #221 |
ninjette.org member
Name: JJ
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Standard Ohlins shock vs. the TTX racing shock. TTX is the latest/greatest Ohlins technology with a separate channel inside the valving for rebound and compression damping. If you YouTube it there are a ton of videos out there explaining how the TTX technology works.
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