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Discussion Starter #1
I'm not sure how many of you guys get Cycle World, but for those of you who don't. I'm sure you'll find this interesting. Cycle World compared the accuracy of the tachometers of the 600rr, zx-6r, gsxr6,r6, and the triump 675. They tested each one at indicated 5000, 10000, and max rpms. the kawa, had about 6.5% until redline and was off about 8.5% there. The gsxr had 6.5% all the way; the triumph had error increasing from 6.5% to 9.5% at peak, and the yamaha jumped from 2% error to 11.5% error at peak. The 600rr was dead nuts on its indicated vs real rpms throughout the entire band, even at peak. I don't know how reputable a measurement machine a Dynoject model 150 RW dyno is, but I still like the fact that the RR did the best. :)
 

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i just picked up June's issue of the UK mag SUPERBIKE. they ha da small article on the same thing.
They said Yamaha UK, made n such offer for a full refund of the R6s. Thye got a mere apology.

They had 2 independent shops run dyno/rpm tests, on the top 5 600s.
and did a High speed run at Bruntinhthorpe proving grounds also.

basically heres the break down...these are redlines and top speed.

Bike --- indicated rpm --- actual rpm --- difference ---- indicated speed --- actual
R6 ---- 17600 ------- 15900 ------ +1700 ------ 168 mph ------ 155mph
ZX6R ---- 16000 ------ 14700 ------- +1300 ------ 181mph -------- 162mph
675 ----- 14300 -------- 13250 ------ +1050 ------ 165mph -------- 155mph
GSXR6 --- 16200 -------- 15500 ------ +700 ------- 175mph -------- 157mph
600RR --- 15200 -------- 15300 ------ -100 -------- 171mph ------- 156mph
 

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C.A.H.N founder / President
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NewRedRider said:
So you're saying that the Yamaha motor is even further below thier reported 17.5k rpm's. Hahahah...That's funny! Yami's think think they're doing something special.
Yep. I read one article where it was actually 16200 then I another where it don't even reach 16K.
Thanks for the info.
 

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MotoGP NEWS Guru
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Well, in the SportRider two issues or so ago, they talked about the new R6 tach being off, but in general, most tachs are off by 5-6%, or something like that. Yamaha did issue to BUY the bikes back from unhappy owners. I didn't realize that the Yamaha was off almost 12% at peak. Way to go, Honda, though for being dead on. It's like Tracy Morgan on Jeremy Roenik in NHL 2K... Ak-u-rut!
 

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i wonder show much Yamaha paid Sportbike magazine to print the 17.5K RPM redline on the cover of the magazine, only to retract it a few months later.
 
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