R3, CrossPlane Crank?

barett · May 5, 2014

Back in July of Last year Yamaha showed off a new crossplane parallel twin that mimics the crossplane principles of the R1's engine. They revealed at the time that they would be developing an entire lineup of engines around crossplane cranks.

Just imagine the benefits...

On a twin, the same idea surely relates to a 270-degree crankshaft, imitating the power delivery of a 90-degree V-twin. That’s the arrangement Yamaha already uses on the TDM900 and the Super Tenere parallel twins, so this new design isn’t likely to be as ground-breaking.

A couple of the Indonesian blogs have been speculating about this lately, so I'm just wondering if this might in fact have some merit to it...

race3 · May 6, 2014

would this be the first crossplane crank from yamaha apart from the r1?

barett · May 7, 2014

race3 said:
would this be the first crossplane crank from yamaha apart from the r1?

TDM900 and the Super Tenere both use crossplane..

YR3 · May 7, 2014

Hopefully they go through with developing a whole line of them, that would be sweet.

race3 · May 8, 2014

barett said:
TDM900 and the Super Tenere both use crossplane..

ahh that is good to know

are those engines based off the R1?

barett · May 8, 2014

race3 said:
ahh that is good to know

are those engines based off the R1?

I don't think so, unless they just hack sawed R1 in half. R1 has an I4 cross plane, ST uses a cross plane P-Twin...

race3 · May 18, 2014

ah ok right

sorry dont know too much about the r1.

Vaughan · May 20, 2014

No confirmation of f R25 is crossplane or not...

but...

R25 is making

36 ps @ 12000 RPM
22.1 Nm (16.3 ft-lb) @ 10000 RPM
11.6:1 compression

YR3 · May 20, 2014

Those are some good specs, are there any more engine cutaways of the R25 engine?

Vaughan · May 21, 2014

no sir, but I do have this picture of the tach. 14K redline...

YR3 · May 24, 2014

Vaughan said:
no sir, but I do have this picture of the tach. 14K redline...

Seen it before and love it, I like how they kept a traditional RPM gauge and didn't make it digital

race3 · May 26, 2014

bwahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

YR3 · May 28, 2014

Just like that, and sounds good for what it is, enough to make me not think about a CBR

R3, CrossPlane Crank?

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