thruxon/t120 shifting - Triumph Forum: Triumph Rat Motorcycle Forums
Water Cooled Twins Technical Talk Technical Talk for water cooled Triumph Twins.

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post #1 of 26 (permalink) Old 07-12-2019, 04:17 PM Thread Starter
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thruxton/t120 shifting

I have a 2016 Thruxton R, and the first 3 upshifts (1-2, 2-3, 3-4) are somewhat clunky. 4-5 and 5-6 are silky smooth. Anyone else experience this and is there any remedies (ie. different oil, I'm using Motorex which is supposed to help shift quality but I see no difference). Doesn't seem to make much difference preloading the shifter either.

Last edited by speedm; 07-12-2019 at 05:22 PM.
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post #2 of 26 (permalink) Old 07-12-2019, 08:23 PM
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Check your clutch, it might not be fully disengaging. The ratios in the "smooth" gears are a lot closer than the ones in the lower gears.

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post #3 of 26 (permalink) Old 07-13-2019, 12:17 AM Thread Starter
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Quote:
Originally Posted by Ranjith Punani View Post
Check your clutch, it might not be fully disengaging. The ratios in the "smooth" gears are a lot closer than the ones in the lower gears.
thanks, i'll give that a shot. just wondering if it's 'normal' for it to clunk in those gears. i see/hear it in videos of the bike as well (jump to 0:35):

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post #4 of 26 (permalink) Old 07-13-2019, 05:56 PM
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Nope mine is flawless, as said, check linkage and clutch disengaging.
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post #5 of 26 (permalink) Old 07-13-2019, 08:17 PM
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My shifts are like that: 1-2-3-4 are clunky, 4-5-6 are smooth, but only when doing clutchless upshifts. When using the light and easy to modulate clutch, all shifts are as smooth as I want them to be. As Ranjith noted, the 4-5-6 are much closely spaced thus no big drop in RPMs.
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post #6 of 26 (permalink) Old 07-14-2019, 07:26 AM
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Quote:
Originally Posted by stgatev View Post
My shifts are like that: 1-2-3-4 are clunky, 4-5-6 are smooth, but only when doing clutchless upshifts. When using the light and easy to modulate clutch, all shifts are as smooth as I want them to be. As Ranjith noted, the 4-5-6 are much closely spaced thus no big drop in RPMs.
So are mine and this was after first service?

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post #7 of 26 (permalink) Old 07-14-2019, 07:39 AM
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If you are timing your throttle and clutch correctly and you clutch is properly adjusted all the changes should be smooth as butter. Mine are on my Thruxton, although my Street Scrambler shifts ever smoother. I don’t understand why you wouldn’t just use the recommended Castrol and focus on getting the changes right.
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post #8 of 26 (permalink) Old 07-14-2019, 08:38 AM
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You are lucky that you do not have the same problem.
I have made my clutch adjustments and they are correct.
I have changed my oil since the service and it has made no difference.
In my opinion there is an issue with my selector and this is is not an isolated incident.

My gear changes were like yours until the dealer did my first service then I had this issue.
It is a problem with the selector mechanics.

Your suggestions are basic, simplistic and condescending.

Have a look at some previous posts on the gear change linkage weakness.

If my gear changes had not been smooth before the service I would not have noticed such a big difference.


Last edited by Tricolour; 07-14-2019 at 08:53 AM.
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post #9 of 26 (permalink) Old 07-14-2019, 09:03 AM
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Lower gears, slightly clunky. Higher gears, higher RPM and higher speed, buttery smooth. It's been a characteristic of the beast for over three years now. No concerns here.
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post #10 of 26 (permalink) Old 07-14-2019, 09:42 AM
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Quote:
Originally Posted by Tricolour View Post
You are lucky that you do not have the same problem.
I have made my clutch adjustments and they are correct.
I have changed my oil since the service and it has made no difference.
In my opinion there is an issue with my selector and this is is not an isolated incident.

My gear changes were like yours until the dealer did my first service then I had this issue.
It is a problem with the selector mechanics.

Your suggestions are basic, simplistic and condescending.

Have a look at some previous posts on the gear change linkage weakness.

If my gear changes had not been smooth before the service I would not have noticed such a big difference.
Apologies. I wasn’t directing my remarks at your situation.
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