Just brought home my new T120 - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 35 (permalink) Old 06-07-2019, 07:29 AM Thread Starter
Minitwins
Main Motorcycle: 2018 T-120 Bonneville
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Just brought home my new T120

Finally went out and exercised the checkbook and bought a new T120. After riding my 2007 T100 for a year the 120 is quite different in sound and power. The gear ratios are quite different, and the power curve is broader than the 100. The 270 degree crank setup makes for a very different sound. I still can't reconcile how a 270 degree crank would work, how it benefits the power and smoothness of the engine.
Lead mechanic at the dealership told me that the crank configuration allows better "tire recovery", meaning power pulses from the crank allows the tire to recover (?) during the pause in pulses as the crank rotates or some such. Never heard of tire recovery, and I kind of doubt that is the reason why Triumph designed this engine.
It's not as smooth as the 100 with the 180 degree crank. It's a great bike, the 120, and I know I'll enjoy it a lot, I do love having that 6th gear, but the crank configuration, anybody have a better explanation of why the heck that benefits?
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post #2 of 35 (permalink) Old 06-07-2019, 07:32 AM
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Congratulations on your new T120.

However... pictures, or it didn't happen.
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post #3 of 35 (permalink) Old 06-07-2019, 07:35 AM
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T100 is a 360 not a 180. 180 is a rare breed, Ninja 650 and various through the years. The liquid cooled T120 is a fantastic machine. All the limitations of the 865/790 air oli cooled bikes are addressed fully in Triumph's latest. I don't know how it could get any better.
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post #4 of 35 (permalink) Old 06-07-2019, 08:41 AM
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One of the wonders of the T120 is its engine smoothness, particularly impressive considering the displacement. I have not given much thought to how Triumph did it; I'm just glad they did.
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post #5 of 35 (permalink) Old 06-07-2019, 02:52 PM
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Originally Posted by tsmgguy View Post
One of the wonders of the T120 is its engine smoothness, particularly impressive considering the displacement. I have not given much thought to how Triumph did it; I'm just glad they did.
Balancing shaft, good EFI in balance. The 1200 is a torque thug.
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post #6 of 35 (permalink) Old 06-07-2019, 03:58 PM
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Welcome to the T120 club it's a nice place to be. I'm loving mine and it's a good looking lady that's for sure.

My one is 3 years old and 24,000 miles on the clock.

Still looks shiny and tidy too.

Dave
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post #7 of 35 (permalink) Old 06-07-2019, 04:37 PM Thread Starter
Minitwins
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True, the T100 is a 360 crank, I knew that, just, well, you know.

According to the head mechanic at the dealership the T120 engine has been counter balanced to smooth out the irregular firing order. I have yet to really take a long ride, weather's going to be good this weekend so I plan on logging some miles. I will post a few pictures tomorrow, if you guys will forgive my tardiness in that area.

I'll report back soon.
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post #8 of 35 (permalink) Old 06-07-2019, 07:19 PM Thread Starter
Minitwins
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Had a good ride this evening, about 44 miles along winding roads here in Vermont.

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post #9 of 35 (permalink) Old 06-07-2019, 07:42 PM
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Quote:
Originally Posted by 2 wheeler View Post
Finally went out and exercised the checkbook and bought a new T120. After riding my 2007 T100 for a year the 120 is quite different in sound and power. The gear ratios are quite different, and the power curve is broader than the 100. The 270 degree crank setup makes for a very different sound. I still can't reconcile how a 270 degree crank would work, how it benefits the power and smoothness of the engine.
Lead mechanic at the dealership told me that the crank configuration allows better "tire recovery", meaning power pulses from the crank allows the tire to recover (?) during the pause in pulses as the crank rotates or some such. Never heard of tire recovery, and I kind of doubt that is the reason why Triumph designed this engine.
It's not as smooth as the 100 with the 180 degree crank. It's a great bike, the 120, and I know I'll enjoy it a lot, I do love having that 6th gear, but the crank configuration, anybody have a better explanation of why the heck that benefits?
He wasn't wrong about the tire thing, but you're right, Triumph did not do it for that reason.
They did it because it sounds more like a V-twin than a motorboat. If we were bass fishers, we'd probably all ride 360 cranks.
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post #10 of 35 (permalink) Old 06-07-2019, 09:00 PM
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Congratulations on your new bike!

I've had one for just over two years, and I'm still loving it.

I am pretty sure that the 270 degree does not change the performance of the bike in any way. It does make it sound a lot different, more like a V-twin.


Ride safe!

Last edited by ranger995; 06-09-2019 at 03:05 AM.
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