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Riding Skills Tips, lessons, experiences, etc. Beginner, intermediate and advanced.

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Old 10-14-12, 00:52   #1
Rink675
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Default Racing starts

For you D675 race bike owners, what RPM do you find is good for the best launch? The previous owner told me 5300RPM and anything more and your are pulling a wheelie....sounds like he was just dumping the clutch to me.

Only reason I can't find out myself physically is because the bike is already in winter storage :(

Also after how many races do you find yourself replacing clutch plates?
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Old 10-14-12, 01:13   #2
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No idea what anyone else here does... But I recall an article a while ago, claiming you should launch at 10k, and just slowly slip the clutch. I can't talk much, my last race start I tried to start in 2nd and at lower RPM's then I knew I should... Stalled, and looked like a idiot... Good thing I am fast, went from last to Second place finish.
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Old 10-14-12, 01:59   #3
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^^^ Whatever you do don't stall on the grid.. Almost killed myself and another rider since the dude stalled on the front row and I clipped him at 80mph. That was an unpleasant tumble down the tarmac.

I'm usually between 6k-8k, stock gearing, small wheelie but nothing uncontrollable.
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Old 10-14-12, 02:11   #4
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Quote:
Originally Posted by Jstu202 View Post
^^^ Whatever you do don't stall on the grid.. Almost killed myself and another rider since the dude stalled on the front row and I clipped him at 80mph. That was an unpleasant tumble down the tarmac.

I'm usually between 6k-8k, stock gearing, small wheelie but nothing uncontrollable.

+2 vortex rear sprocket so maybe 5300 wasn't far off?
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Old 10-14-12, 07:46   #5
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Yeah I also go off at about 8K, resulting in a small little wheelie

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Old 10-14-12, 07:54   #6
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Can't be watching the tach while launching, a good start always pulls up a small wheelie
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Old 10-14-12, 14:31   #7
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How often are you guys replacing clutch plates?
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Old 10-14-12, 15:52   #8
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I'm new to racing so I haven't had to replace any clutch plates, but I am launching at between 8k and 10k with pretty good results. The last race I was in, I was on the grid in the 11th spot and jumped up to 4th right off the start, just gotta work that clutch a little.
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Old 10-14-12, 17:08   #9
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Quote:
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How often are you guys replacing clutch plates?
Approx 100 or so races, no clutch plates replaced. Plus two seasons of track days before that.
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Old 10-14-12, 17:59   #10
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Quote:
Originally Posted by whirlybird View Post
I'm new to racing so I haven't had to replace any clutch plates, but I am launching at between 8k and 10k with pretty good results. The last race I was in, I was on the grid in the 11th spot and jumped up to 4th right off the start, just gotta work that clutch a little.
Oh nice, yea that last guy must not have been doing it right because it's not like this bike has a built motor with more down low spec'd cams or anything.


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Approx 100 or so races, no clutch plates replaced. Plus two seasons of track days before that.

That's good to hear, the guy that is my mentor said that on his 06 R6 he is replacing clutches every 3-4 race weekends although he is easing that clutch out at 14k RPM's so I am sure that has a lot to do with it also.
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