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Yamaha lied about the new R6 redline

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Kickstart
The Oracle



Joined: 04 Feb 2002
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PostPosted: 23:43 - 05 Feb 2006    Post subject: Reply with quote

G wrote:
Admittley you get relatively a lot smaller returns from revvy high on bigger bikes, but it still does reward you! Using 80% of the redline is going to make a lot less difference on a 600, but using 100% does make you descernably faster.


Not quite, using 80% of the red line might be getting you 100% of the power. Using 100% of the red line might well put you past using peak power.

Red line is where it is safe to rev the engine to, which is not really directly related to where max power is produced.

All the best

Keith
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Kickstart
The Oracle



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PostPosted: 23:45 - 05 Feb 2006    Post subject: Reply with quote

gsxrmick wrote:
Dont the cbr, zxr etc.. 250's rev to 18,000?? Very Happy


Not sure about the others but the CBR250 did have a red line on the rev counter at 19500rpm.

The rev counter apparently bears as much resemblence to reality as an RS125 speedo.

All the best

Keith
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Jack_Cheese
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Joined: 14 Jul 2005
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PostPosted: 23:53 - 05 Feb 2006    Post subject: Reply with quote

Kickstart wrote:
Not quite, using 80% of the red line might be getting you 100% of the power. Using 100% of the red line might well put you past using peak power.

Red line is where it is safe to rev the engine to, which is not really directly related to where max power is produced.

All the best

Keith


But the extra revs, and the extra speed definitely help a 125 through the next gear. Though i do agree on the peak power point. Having said that, the time wasted in the lower gear would probably be larger than the time saved in the next gear. I just change when the acceleration slows down.

Jack
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G
The Voice of Reason



Joined: 02 Feb 2002
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PostPosted: 23:56 - 05 Feb 2006    Post subject: Reply with quote

Kickstart wrote:

Not quite, using 80% of the red line might be getting you 100% of the power. Using 100% of the red line might well put you past using peak power.

Red line is where it is safe to rev the engine to, which is not really directly related to where max power is produced.

Sorry, I should have made it clear that when saying 'using' I mean the maximum you will rev to.

On the r6 you definitely need to rev to pretty much the redline to be at the right point in the next gear for maximum average power.
Obviously if you change up at maximum power you will put yourself a fair bit further down the range on most engines - meaning that the average power being used will be lower.
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Kickstart
The Oracle



Joined: 04 Feb 2002
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PostPosted: 00:11 - 06 Feb 2006    Post subject: Reply with quote

Hi

There are quite a few bikes made where revving it to the red line means that changing up a gear will still drop the revs to a point above peak power. For example if you rev a ZZR600 to the red line then you are 2500rpm past peak power, which will do you no good at all.

All the best

Keith
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G
The Voice of Reason



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PostPosted: 00:16 - 06 Feb 2006    Post subject: Reply with quote

Yea, appreciate that.
Only bike I've owned with such was an RD350 oddly enough! Though it was an FII that has an odd restriction as standard.

I did say 'most' engines Smile.
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Kickstart
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PostPosted: 00:28 - 06 Feb 2006    Post subject: Reply with quote

Nah, the red line is just marketing and not much to do with peak power. Although remember you are riding to the rev counter rather than the real rpm which is probably quite a lot lower.

Seen a few bikes with peak power inside the red line. From memory Gilera even sold a 125 with peak power after the rev limiter.

Apparently the CBR250 MC19 red lines at 18000, but produces peak power at 14500.

All the best

Keith
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Jack_Cheese
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Joined: 14 Jul 2005
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PostPosted: 00:36 - 06 Feb 2006    Post subject: Reply with quote

Kickstart wrote:

Seen a few bikes with peak power inside the red line. From memory Gilera even sold a 125 with peak power after the rev limiter.

All the best

Keith


Sounds like a form of restriction to me.

Jack
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Kickstart
The Oracle



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PostPosted: 00:43 - 06 Feb 2006    Post subject: Reply with quote

Nope, just quoted peak power was a few hundred rpm into the red and after the ignition called time. It was the Gilera MX1 which claimed peak power of 28hp at 10000 rpm yet had the rev limiter set to 9500rpm

All the best

Keith
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Wooly R6
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Joined: 19 May 2005
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PostPosted: 09:43 - 06 Feb 2006    Post subject: Reply with quote

it isnt gonna stop people buying them though!!! Thumbs Up
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cqueen
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Joined: 13 Apr 2005
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PostPosted: 09:57 - 06 Feb 2006    Post subject: Reply with quote

That is pretty cheeky!

It wouldnt put me off buying one though,

I kinda have a bit of respect for them for lieing, it was brave & would have worked a treat for them, if only people hadnt dyno-ed them before they've had a chance to sell.

I can imagine the board meeting now....

''So much for your fucking 'bright idea' nigel! Evil or Very Mad ''
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loply
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PostPosted: 19:14 - 06 Feb 2006    Post subject: Reply with quote

Wouldnt it be fun to change the tacho face to spin round to 22,000?

Might make you go faster too...
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.....
Quote Me Happy



Joined: 15 Jan 2005
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PostPosted: 19:43 - 15 Feb 2006    Post subject: Reply with quote

Yamaha has offered to buy back the R6s of any owners who are upset about the discrepancy. Respect to Yamaha for doing the right thing and taking care of their customers. Here is the text of a letter that has been sent to all 2006 R6 owners:

Dear Yamaha Customer:

Yamaha introduced and marketed the new 2006 YZF-R6 motorcycle with a red line limit of 17,500 RPM, as indicated on the tachometer. After testing production units, we have determined that the actual red line limit is approximately 16,000 RPM, resulting in a tachometer error of roughly 9%. This has no affect whatsoever on the performance of the motorcycle.

We are extremely confident that, despite this error, the R6 will more than satisfy you in every way. However, if you are not satisfied with your motorcycle because of this discrepancy, we will repurchase it and will reimburse you the entire purchase price, including any setup fees, taxes or interest that you have paid in connection with your purchase of this motorcycle.

If you choose to have your 2006 YZF-R6 repurchased, please check where indicated below, sign this letter and return it to Yamaha Motor Corporation, U.S.A., Attn.: 2006 YZF-R6 Buyback, 6555 Katella Ave., Cypress, CA 90630 in stamped envelope provided. Yamaha must receive this letter indicating this choice by March 15, 2006, or we will assume that you have decided to keep and enjoy your motorcycle.

Our goal is to ensure your satisfaction, both now and in the future. We would like to sincerely apologize for this error and any inconvenience it may have caused you, and also to thank you for your continued support of Yamaha.

Best Regards,

Dennis McNeal
Vice President Motorcycle Operations
Yamaha Motor Corp.

This is also a smart move for Yamaha: it mostly mitigates the bad publicity they have received over this issue, and it is unlikely to cost them too much money.

This is from the US though, don't know about over here. I can't really see anyone taking them up on the offer though.
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