Clutch Lifespan - Triumph Forum: Triumph Rat Motorcycle Forums
Air Cooled Twins Technical Talk Technical Talk for Hinckley Triumph Twins: Bonneville, Bobber, T100, Speedmaster, America, Thruxton, and Scrambler. Sponsored by: triumphtwinpower.com

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post #1 of 16 (permalink) Old 05-06-2019, 04:56 PM Thread Starter
Minitwins
Main Motorcycle: Scrambler 2012
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Clutch Lifespan

Hey

I am almost at the 30K mile mark on a 2012 Scrambler EFI and was planning a few tweaks, preventive rather than repairs and wanted your thoughts on clutch wear.

The bike's got the usual mods, TTP stage 2 map with free flowing 2:1...... i ride hard often pushing 7k revs. The clutch is doing just fine but at times feel if I go the green Barnett route it may bite a little better.

Since i am opening her up i was wondering if at 30K miles, i should consider changing the plates too.

I have heard both ends of the spectrum of folks who have reached the 70k miles before the plates were toast and those that say its 30k, so go ahead and change the plates.

Be great if you could reply back with, when and if your plates gave in or if you are running higher than 30k miles with typical riding style and any performance mods to get a better idea on the expected life of the clutch plates.

Cheers
Tom
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post #2 of 16 (permalink) Old 05-06-2019, 07:32 PM
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I have a 2015 Thruxton purchased new and recently installed Barnett green springs but I have to tell you when I opened her up the OEM springs in there sure looked green. I think Triumph updated the clutch springs somewhere in the EFI range bikes but I'm not sure when and that's just an educated guess. If I were you I'd go full on with plates and springs if you do anything....just my opinion.
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post #3 of 16 (permalink) Old 05-06-2019, 09:11 PM
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If you are not getting clutch slippage leave them alone. when and if you get slippage it's time to change. Don't try and fix what is not broken. Just my 2 cents of many years of riding high HP sport bikes.

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post #4 of 16 (permalink) Old 05-06-2019, 10:05 PM
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Quote:
Originally Posted by yrunvs View Post
I have a 2015 Thruxton purchased new and recently installed Barnett green springs but I have to tell you when I opened her up the OEM springs in there sure looked green. I think Triumph updated the clutch springs somewhere in the EFI range bikes but I'm not sure when and that's just an educated guess. If I were you I'd go full on with plates and springs if you do anything....just my opinion.
I have a 2013 Thrux and yes the OEM springs have a faded light green strip on them. However, they lack the coil thickness of Barnetts and more coil turns as the Barnetts are shorter. I must say the shifts are noticeably crisper and snappier with Barnetts at the expense of a little more hand pull effort. Worth the swap any day of the week.

2013 Thruxton EFI
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post #5 of 16 (permalink) Old 05-07-2019, 09:08 AM Thread Starter
Minitwins
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Back 2-2, I hear you and that's usually my stance, but then the "what if" creeps in. I believe the plates at this point should only be half way down from what I have gathered thus far and so if the springs can give a bit more feel for the hot summer then it may just be the tipping point to open her up.
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Last edited by Thomasinasu; 05-07-2019 at 09:15 AM. Reason: addressed the reply to earlier comment.
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post #6 of 16 (permalink) Old 05-07-2019, 09:11 AM Thread Starter
Minitwins
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Quote:
Originally Posted by MyEvilTwin View Post
I have a 2013 Thrux and yes the OEM springs have a faded light green strip on them. However, they lack the coil thickness of Barnetts and more coil turns as the Barnetts are shorter. I must say the shifts are noticeably crisper and snappier with Barnetts at the expense of a little more hand pull effort. Worth the swap any day of the week.
Thank you this is super helpful. I think i will switch the springs when the oil change is due and will keep you all posted on the results once done.
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post #7 of 16 (permalink) Old 05-08-2019, 01:58 PM
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The Clutch plates barely wear...OEM Springs have 65k life span.

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post #8 of 16 (permalink) Old 05-09-2019, 11:30 AM
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You cant really talk about miles with clutches, some people burn through them instantly, for some they never wear, its a matter of technique.
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post #9 of 16 (permalink) Old 06-03-2019, 05:16 PM Thread Starter
Minitwins
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A quick update after the job

I managed to get the springs switched out the plates looked great, while i was in there dropped in a TTP safe start. In that same time i also changed out the fork oil with Maxima 10W & 15W on a 40:60 ratio, new drive chain and sprocket, tore out the old brake lines and replaced with braided lines and really cleaned out the calipers.

And the result is just fantastic..... Superb, it was worth all that time & effort as the bike runs even better now. The clutch pull is just a tad tighter but as someone said the gear changes are crisper. I feel like there is a bit more of the power low down and it just pulls better on hard acceleration.

Anyone on the fence about this, it’s an easy project that takes time with the fiddly things such as removing the old gasket and also putting the spring restrain back in without the tool while keeping the alignment.
Here are some images

Cheers
Tom
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post #10 of 16 (permalink) Old 06-03-2019, 09:39 PM
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Thanks for the update. See this is how it should work....when a poster starts a thread they need to finalize it.
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