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droog |
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droog Spanner Monkey
Joined: 03 Dec 2019 Karma :
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Posted: 18:59 - 20 Sep 2021 Post subject: Crossplane Crank Explained |
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Good explanation/visualisation of the physics, mechanics and advantages of the crossplane crank engine design as per Yamaha R1
(Also historical focus on the application of 'Big Bang' firing order in 90's MotoGP).
https://www.youtube.com/watch?v=uM-ycHS9uvw ____________________ Even more boring in real life . . . |
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A100man |
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A100man World Chat Champion
Joined: 19 Aug 2013 Karma :
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Posted: 11:46 - 21 Sep 2021 Post subject: Re: Crossplane Crank Explained |
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droog wrote: | Good explanation/visualisation of the physics, mechanics and advantages of the crossplane crank engine design as per Yamaha R1
(Also historical focus on the application of 'Big Bang' firing order in 90's MotoGP).
https://www.youtube.com/watch?v=uM-ycHS9uvw |
Indeed - I sure learned something - more staggering is the fact it's had 1.2 m views in 2 weeks. ____________________ Now: A100, GT250A, XJ598, FZ750
Then: Fizz, RS200, KL250, XJ550, Laverda Alpina, XJ600, FZS600 |
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droog |
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droog Spanner Monkey
Joined: 03 Dec 2019 Karma :
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grr666 |
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grr666 Super Spammer
Joined: 16 Jun 2014 Karma :
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Posted: 16:50 - 21 Sep 2021 Post subject: |
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I was going to post this myself but couldn't be bothered, I watched it a week or so ago during a you tube surfing
session of MT10 related stuff as I'm seriously considering ordering one. All clever stuff. ____________________ Currently enjoying products from Ford, Mazda and Yamaha
Ste wrote: Avatars are fine, it's signatures that need turning off. |
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droog |
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droog Spanner Monkey
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Zen Dog |
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Zen Dog World Chat Champion
Joined: 11 Aug 2004 Karma :
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Posted: 14:21 - 22 Sep 2021 Post subject: |
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Where he's talking about the R1's use of a balancer shaft (approx 8 mins in), he says they do so as a better solution than adding mass to the crankshaft to counter the rocking couple of the outer cylinders. And he says they do this because adding mass to the crankshaft would effect the rev happy nature of the engine. That seems fair enough, but why wouldn't the additional balancer shaft also have this effect? If it's being driven directly by the crankshaft, then isn't that additional mass that also needs to be spun up as revs increase? What am I missing? ____________________ Current - '94 VFR750FR, '00 VFR800FI Previous - '10 Street Triple R, '92 MZ ETZ301, '05 TTR250, NSR125R, KMX125, "Honda" Win (chinese copy of an old Honda design with a C90 engine)
My bike trip around S.E. Asia 2010/2011 |
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rpsmith79 |
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rpsmith79 World Chat Champion
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droog |
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droog Spanner Monkey
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droog |
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droog Spanner Monkey
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rpsmith79 |
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rpsmith79 World Chat Champion
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droog |
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droog Spanner Monkey
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Old Thread Alert!
The last post was made 2 years, 214 days ago. Instead of replying here, would creating a new thread be more useful? |
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