I'm on the wait list for the 8th. Never been to a RC day so see how that goes to sign up for the 22nd. Hope to see ya!
Calabogie this weekend
- Thread starter RobVN
- Start date
I'm on the wait list for the 8th. Never been to a RC day so see how that goes to sign up for the 22nd. Hope to see ya!
TLDeano
Well-known member
A good quick Getoff at 5 probably would make you feel quite alive.I had a great day, Saturday. Really got comfortable and set some good lap times. Very encouraging.
Then I lost the front on the 4th lap on Sunday and lunched every inch of bodywork on the 600 as well as a few other things... I came in hot into 5, knew it was probably not going to stick because of the difference in track conditions and was proven right.
Then I took out the 1000, struggled like mad to come to grips with it, made some changes to the suspension and finally started making it work for me. Was chasing down "the fast guy" on a CBR 1000RR that I couldn't outcorner enough on the 600 to stay with on Saturday, when the engine started sounding a bit rough and there was a big vibration in 5th gear. I'd missed a shift (with the quickshifter) coming out of 4 and the shift display on the dash wasn't working right, I'd assumed the sensor was just dirty because I've had that happen before... and I was right. I backed out of the throttle, went offline and rode it into the pits... when I had a chance, I looked down and my left boot was coated in oil (as was the gear position sensor, of course). There is now a hairline crack in the block just underneath the cylinders that oil is pushing out of at high RPMs... the engine still runs "fine" but I'm certain there is something more wrong in there, wherever the vibration is coming from... could be gearbox, could be a bearing, who knows... but that engine block is finished. And now it needs to be pulled apart to see what happened... sigh
The 600 was ridable, I could have taken the fairings off and completed the rest of the day on it, albeit the exhaust would have limited its power output. So I'm hopeful that I will have that bike ready in August, but the 1000? Who knows... I can just transfer the head (that's where the power and the money is) to another motor but I doubt that it would live long without some higher spec parts in the engine.
Shaman
Well-known member
Scrambling to get out from underneath a bike that was 3 feet off the ground and coming at me was rather breathtaking, to say the least. I don't know if it would have landed on me but from my vantage point, I wasn't taking a chance.
I know now what the issue is with the motor:
GSX-R 1000 engines used in racing have a common issue, which is that the stator is on the left hand of the crank, and is a big draw on power (8hp?) as well as stress on the crank, for an engine that spins up 10,000 rpm in just an instant. More to the point, sudden throttle-offs or a missed gear puts a LOT of stress on the crankshaft where it is necked-down for the stator assembly, and me missing a gear going onto the main straight was likely the final bit of metal fatigue needed to put the crank snout out of balance enough to not only cause a very noticable vibration in the engine but also enough force to crack the engine block.
Zed warned me of this potential issue. The only cure is replacing the crankshaft from time to time in order to combat the metal fatigue... so really, a racing 2008 GSX-R 1000 engine used in that application is a time bomb waiting for the metal fatigue to set in and kill something expensive.
According to Zed, nobody else's engine is really any better, either.
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That's the third bad "off" I have seen at close quarters in turn 5. People must hear me coming and panic................
Exact same bike, symptons, problems, fix and story a friend had from the same misshift at CTMP last summer.
Scrambling to get out from underneath a bike that was 3 feet off the ground and coming at me was rather breathtaking, to say the least. I don't know if it would have landed on me but from my vantage point, I wasn't taking a chance.
I know now what the issue is with the motor:
GSX-R 1000 engines used in racing have a common issue, which is that the stator is on the left hand of the crank, and is a big draw on power (8hp?) as well as stress on the crank, for an engine that spins up 10,000 rpm in just an instant. More to the point, sudden throttle-offs or a missed gear puts a LOT of stress on the crankshaft where it is necked-down for the stator assembly, and me missing a gear going onto the main straight was likely the final bit of metal fatigue needed to put the crank snout out of balance enough to not only cause a very noticable vibration in the engine but also enough force to crack the engine block.
Zed warned me of this potential issue. The only cure is replacing the crankshaft from time to time in order to combat the metal fatigue... so really, a racing 2008 GSX-R 1000 engine used in that application is a time bomb waiting for the metal fatigue to set in and kill something expensive.
TLDeano
Well-known member
Scrambling to get out from underneath a bike that was 3 feet off the ground and coming at me was rather breathtaking, to say the least. I don't know if it would have landed on me but from my vantage point, I wasn't taking a chance.
I know now what the issue is with the motor:
GSX-R 1000 engines used in racing have a common issue, which is that the stator is on the left hand of the crank, and is a big draw on power (8hp?) as well as stress on the crank, for an engine that spins up 10,000 rpm in just an instant. More to the point, sudden throttle-offs or a missed gear puts a LOT of stress on the crankshaft where it is necked-down for the stator assembly, and me missing a gear going onto the main straight was likely the final bit of metal fatigue needed to put the crank snout out of balance enough to not only cause a very noticable vibration in the engine but also enough force to crack the engine block.
Zed warned me of this potential issue. The only cure is replacing the crankshaft from time to time in order to combat the metal fatigue... so really, a racing 2008 GSX-R 1000 engine used in that application is a time bomb waiting for the metal fatigue to set in and kill something expensive.
ask Sandy about his r6 cranks,.... actually don't bother, lol. (1200km stock bike right down to the pipe, breaking cranks)
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TLDeano
Well-known member
My second lap at Bogie ever , in the red group I saw the same thing. A guy passes me at the end of backstraight, and proceeds to gracefully lowside on the brakes in front of me, slides straight off 5 and when the kawi digs into the grass it pinwheels as its bodypanels fly off. How do you NOT fixate on that kind of entertainment? Luckily I looked away just enough to not touch the grass edge.
