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Crossplane crank bikes?

Discussion in 'Bike Reviews, Questions and Suggestions' started by neosporattis, Jan 26, 2009.

  1. Sorry guys I didn't know where else to put this.

    With the introduction of the crossplane crankshaft integrated into the new '09 YZF-R1, it provides a smoother torque curve and better overall back wheel contact with the road.

    Will the crossplane crank become standard issue in other bikes (Fireblade, Gixxer, Ninja) for the years to come, or is it just a gimmick?

    thanks a lot
  2. Yamaha has been developing the technology in MotoGP for a few years now. So your probably 1-2 years away from seeing another manufacturer take up the same technology. That's if they want to use it, they might be happy with the current engine setups as they dont require lots of $$$ in development.

    I'd say it depends how successful the new engine is in WSBK, if Yamaha clean up then the others will either follow or try and have it banned. :roll:
  3. from the R1 launch at Eastern Creek and Europe.. the new R1 sounds and seems amazing. The bottom end torque of a v-twin and the peak hit of a I4?

  4. Treat is as a gimmick until it's proven otherwise.
  5. #5 say_wat, Jan 27, 2009
    Last edited by a moderator: Jul 13, 2015
  6. It will be sold by everyone in the bike media as the most amazing thing since sliced bread. And it might make 2% of riders faster 2% of the time.
  7. 22% of people know that

    but yeah i agree.
  8. #8 neosporattis, Jan 27, 2009
    Last edited by a moderator: Jul 13, 2015
    stupid how they say enhanced performance is achieved through shorter wheelbase

    its 5mm shorter than the '08 model... hardly a significant change
  9. Not really a gimmick, but also not anything completely new. It's basically a way to make an I4 behave like a V4. The inertial torque thing is not really different to a V2 either.

    Can you notice it? Sure, when you're cranked over to the edge of the tyre and winding the throttle on to point that the tyre is starting to slide, a V2/V4 will hold its line and traction better than a traditional I4. Not something that you're ever going to notice on the public road unless you're pushing too hard (for the public road).

    Some top-end power is lost due to the imbalanced engine, either requiring a balance shaft, or having to live with annoying vibrations, so it's not a completely "free" benefit no matter how marketing tries to spin it. To get the most of it you really need to be a skilled rider, capable of riding on the knife-edge of traction, and it'll then give you a small advantage in mid-corner speed and on exits, at the loss of a bit of top-end.

    We'll have to see how they fare towards the end of the year in WSBK after the race teams dial them in properly.
  10. The sooner they admit they have one too many cylinders the better off we will be.
  11. :grin: Yep, all this stuffing around with 4's and 2's. If Yamaha really cared about minimal inertial torque, they'd be using a 120° crank-throw inline triple, which has about 9% of the inertial torque effect of a flat-plane I4, and just 43% of the inertial torque effect of a cross-plane I4, or 90° V2/V4.
  12. The latest Superbike - Overall Best Times
    Update: January 25, 2009, 18.35 PM ET
    Comment Email Print

    1 67 Byrne S. (GBR) Ducati 1098R 1'43.294
    2 19 Spies B. (USA) Yamaha YZF R1 1'43.484
    3 41 Haga N. (JPN) Ducati 1098R 1'43.487
    4 66 Sykes T. (GBR) Yamaha YZF R1 1'43.546
    5 7 Checa C. (ESP) Honda CBR1000RR 1'43.657
    6 76 Neukirchner M. (GER) Suzuki GSX-R 1000 K9 1'43.674
    7 96 Smrz J. (CZE) Ducati 1098R 1'43.767
    8 84 Fabrizio M. (ITA) Ducati 1098R 1'43.951
    9 65 Rea J. (GBR) Honda CBR1000RR 1'44.115
    10 91 Haslam L. (GBR) Honda CBR1000RR 1'44.170
    11 11 Corser T. (AUS) BMW S1000 RR 1'44.261
    12 71 Kagayama Y. (JPN) Suzuki GSX-R 1000 K9 1'44.425
    13 55 Laconi R. (FRA) Ducati 1098R 1'44.546
    14 9 Kiyonari R. (JPN) Honda CBR1000RR 1'44.610
    15 23 Parkes B. (AUS) Kawasaki ZX 10R 1'44.704
    16 53 Polita A. (ITA) Ducati 1098R 1'45.108
    17 56 Nakano S. (JPN) Aprilia RSV4 1'45.179
    18 3 Biaggi M. (ITA) Aprilia RSV4 1'45.199
    19 24 Roberts B. (AUS) Ducati 1098R 1'45.278
    20 25 Salom D. (ESP) Kawasaki ZX 10R 1'45.393
    21 100 Tamada M. (JPN) Kawasaki ZX 10R 1'45.446
    22 36 Lavilla G. (ESP) Honda CBR1000RR 1'45.672
    23 33 Hill T. (GBR) Honda CBR1000RR 1'45.679
    24 99 Scassa L. (ITA) Kawasaki ZX 10R 1'45.820
    25 111 Xaus R. (ESP) BMW S1000 RR 1'46.128
    26 44 Rolfo R. (ITA) Honda CBR1000RR 1'46.916
    27 77 Iannuzzo V. (ITA) Honda CBR1000RR 1'46.971

    News 26/01/2009
    Yamaha World Superbike Team on top form in Portimao despite bad weather.

    The first test of 2009 for the Yamaha World Superbike Team at the Portimao circuit in Portugal was hampered by bad weather for the duration of the three days. Despite this setback both new riders performed well, fine tuning their set ups for the upcoming test and first race of the 2009 World Superbike Championship at Phillip Island in Australia.

    Young American three-time AMA Superbike star Ben Spies was consistently on the pace, and finished the test second fastest with an overall time of 1’43.484, less than two tenths of a second off fastest rider Shane Bryne. Spies team mate, Young rising British star Tom Sykes, took advantage of the test to catch up on time missed due illness at the previous test in South Africa and flew up the times, ending the test an impressive fourth, less than a tenth of a second from his team mate with a time of 1’43.546.

    This was only the third outing for the riders on the M1 derived 2009 Yamaha WSB YZF-R1. The advantage of the revolutionary cross plane crankshaft and uneven firing interval resulted in more grip and smoother torque delivery for Spies and Sykes, enabling both riders to achieve faster times in the dry and in the wet. With more fine-tuning to come the team are looking to be serious contenders in the 2009 WSB Championship. From the South Africa test to Portimao, the Yamaha team achieved a big power output, clearly demonstrated when the R1 claimed the maximum top speed of all teams at the Portugese test.
    It seems alright.. and apparently the motor ain't in final spec yet either!
  13. what power output are we looking at?

    I saw somewhere that the R1 has 190hp
    what about the other 3?
  14. Claimed horsepower figures are a load of garbage anyway.
  15. According to this the new R1 makes about 160 hp at the rear wheel. Not too far off what is published considering the published figure is usually at the crank.

    I'm surprised that you knock the cross plane crank FLUX -seeing that you're always extolling the virtues of the triple for the exact same reasons :) Any one who has ridden a V4 in anger will easily understand. The ability to get hard on the gas and simply drive out of the corner is brilliant. All the positives of the V4 without the extra cylinder head, 2 less cams, one less cam drive, less weight and all in a much more compact package. Personally, I reckon it's brilliant. A test ride will be in order I feel
  16. Nope. Re-read my posts a few times now. Can't see how I was knocking them (cross-plane cranks) in any shape or form. All I did was state that it takes a good rider to really appreciate what they do, and I was having a jovial jab at Yamaha's spin-marketing department.
  17. Fair enough :) The bike seems to be going rather well in testing given that it's a whole new bike with 2 new riders. Could be something in it eh? :)
    I must admit that it's the first litre bike that has me sitting up and taking notice. As a street bike anyway :)
  18. :LOL: you on a R1.....what you like riding by yourself :LOL: