New 2024 Triumph Tiger 900 Announced! (GT, GT Pro, Rally Pro)

[DaveM]

New 2024 Triumph Tiger 900 Announced! (GT, GT Pro, Rally Pro)


View: https://www.youtube.com/watch?v=aW8JrDMfIXw

 

[rodders]

Correction:
The T-Plane crank does NOT improve torque.

The only difference is the different exhaust note, which appeals to brain-dead motorcycle reviewers. And supposedly a 'relaxation' in the tyre tread between power impulses. But on my calculations, anything above 3,000 rpm and the rubber has absolutely no time to relax whatsoever.

So there you have it. The only reason for all those g-d awful T-Plane vibrations, was because some purple haired idiot in the design team thought that the exhaust sounded better to their childish little mind. And THAT, is the trouble with UK engineering and management.

Perhaps they wanted to regain Triumph's previous reputation for vibration, which rattled their bikes to bits and gave the rider 'white finger'.

As a result they have to add rubber handlebars, just like on my old A65. Oh, brilliant - the purple hair brigade have taken us back to the 1970s. Bravo, lads, bravo. Oh, sorry for being so judgemental - they probably all queue up for the ladies dunny.

R

 

[Vector]

Seems there is a benefit , "Flat-plane cranks, no matter what firing order they have, will always alternate from bank to bank. This yields optimum exhaust scavenging and thus doesn't require the more complex header primaries that have to cross over from one bank to the other. Due to their design they don't need huge counterweights, which is why they rev up so quickly. The downside is that they suffer from secondary vibrations. More on that later."

 

[daggy]

Correction:
The T-Plane crank does NOT improve torque.

The only difference is the different exhaust note, which appeals to brain-dead motorcycle reviewers. And supposedly a 'relaxation' in the tyre tread between power impulses. But on my calculations, anything above 3,000 rpm and the rubber has absolutely no time to relax whatsoever.

So there you have it. The only reason for all those g-d awful T-Plane vibrations, was because some purple haired idiot in the design team thought that the exhaust sounded better to their childish little mind. And THAT, is the trouble with UK engineering and management.

Perhaps they wanted to regain Triumph's previous reputation for vibration, which rattled their bikes to bits and gave the rider 'white finger'.

As a result they have to add rubber handlebars, just like on my old A65. Oh, brilliant - the purple hair brigade have taken us back to the 1970s. Bravo, lads, bravo. Oh, sorry for being so judgemental - they probably all queue up for the ladies dunny.

R

there is absolutely a difference in torque with the T Plane crank & it's 1-3-2 firing order. The increase in engine braking is considerably more compared to the old 800 which isn't hard as the 800 had zero engine braking when riding off-road. BTW the 800 had 79NM of torque whereas the 900 has 87NM
Here's an excerpt from a well know motorcycling magazine;
"

Triumph’s T-Plane Crankshaft​

It is all about traction. The 1-3-2 firing order has a prolonged gap between cylinders three and two firing. The gap removes drive to the rear wheel, allowing it to grip the surface before cylinder one comes along, and we begin the cycle again.

The word “gap” is a relative term. For example, with the Triumph triple running at a mid-range RPM, the gap is measured in thousands of a second. Yet the unequally spaced firing sequence gives T-Plane crankshaft motorcycles a unique character.

The best explanation I’ve heard centres around a spinning tyre. Once spinning, keeping the power smooth and constant, or even adding more power will only keep the tyre spinning.

Close the throttle and then open it again, and you get a “kick” caused by the tyre gripping as the power is reintroduced.

That is what Triumph’s T-Plane crankshaft is doing, but many times a second, giving the Triumph extra traction.

There is a wonderful video representation of the firing order by William Moser on Youtube that you can find below. It shows how the gap in the firing sequence works and how it modulates the delivery of power to the rear wheel"