| Author |
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Kenm123t
| | Posted on Sunday, March 17, 2013 - 10:57 pm: | 
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Guess who was blowing engines Yamaha! EBR s problem were the clutches. First time failures! Day two had new motors on both bikes Speculation is mismarked clutch springs |
Crusty
| | Posted on Monday, March 18, 2013 - 05:19 am: |
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Daytona has always been a problem track for Buells and EBRs. In 1999, Shawn Higbee was over a second a lap faster than the second fastest bike. He made one lap, crossed the finish line two seconds ahead of the rest, and the bike died. Then there was the debut of the XBRR. All four of the bikes failed to finish the race. Or the time Danny Eslick was leading the 200 until the first pit stop; then it all came to a nightmarish end.
The bikes will inspected, the problems dealt with, and they'll be back at the next race. I think we'll see them on the box this year. |
Reepicheep
| | Posted on Monday, March 18, 2013 - 08:26 am: |
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And with regards to the tire slipping... was it the front instead of the back this time? I'm still wondering if some of the new electronic controls moved the performance up enough to create new problems... like a front tire rotating on the rim instead of the rear.
Anyone seen any wheel speed sensors on the 1190's yet? |
Riohondohank
| | Posted on Monday, March 18, 2013 - 08:45 am: |
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I don't think the front tire slipping has anything to do with increased performance of the electronics, it just happens sometimes under heavy braking. I spoke to Cory about it and he said he has experienced it in the past on other bikes. Of course the problem is that it throws the wheel out of balance. |
Fast1075
| | Posted on Monday, March 18, 2013 - 08:56 am: |
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I was glad that I got to chat briefly with Cory and his team mates. What a class act! |
Reepicheep
| | Posted on Monday, March 18, 2013 - 10:37 am: |
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Given these are race bikes with race spec tires, why doesn't Dunlop (or whever) balance the tire separately? They can't be that far out, just glue on a sheet of rubber on the inside wall where it belongs to balance the tire.
Then balance the wheel separately, and fix that balance to the wheel.
You would add a little weight (as you can't line up the light spot of the tire with the heavy spot of the wheel), but it gives one less thing that can go wrong, and it would let you balance the tires before they left the factory and not have to rebalance anything on a tire change. And the tires can't be *that* much out of balance... |
Crackhead
| | Posted on Monday, March 18, 2013 - 12:09 pm: |
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I agree with Reepicheep. And to take it 1 step further, instead of basic balancing, road force balancing should be used.
I suspect as the electronics improve, the variation in tire flex will be come an issue since it can cause the tire to bounce/chatter. |
Hybridmomentspass
| | Posted on Monday, March 18, 2013 - 01:54 pm: |
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Or the time Danny Eslick was leading the 200 until the first pit stop; then it all came to a nightmarish end. "
Gosh, who can forget, right there with those two yamahas and then the bodywork let go...
Dang Danny can ride though!
Hate he's not on a EBR/Buell anymore, but he's still entertaining to watch
Heck, race one he went off twice and still finished great |
Sparky
| | Posted on Monday, March 18, 2013 - 04:18 pm: |
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WRT tire slipping, heck, my Bultaco Matador had rim screws which worked OK for plonking around in the woods, but OTOH, it couldn't go 200 mph either...  |
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