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Sticky going from 1st to neutral - diagnosis needed please

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SteveSmith
Nitrous Nuisance



Joined: 08 Nov 2012
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PostPosted: 16:29 - 12 Sep 2017    Post subject: Sticky going from 1st to neutral - diagnosis needed please Reply with quote

Hi, I'm looking for any ideas of what might be causing my gear change problem. The bike is a 2005 Triumph Sprint 1050 ST. Occasionally going from 1st into neutral the lever gets stuck. Sometimes it just requires a bit more force than normal to get out of first, which means that it will jump straight into second, other times it jams totally. Feathering the clutch just enough to get a bit of movement will usually free it up and it pops out.

It doesn't happen all the time, but tends to be worse when the bike is hot.

I read somewhere that low / old oil can cause this, so I changed the oil recently but it made no difference.

It runs fine when it is actually in any gear, so I suspect (hope!) that the problem is with the change mechanism rather than the innards of the gearbox.

Any ideas please?

Many thanks,

Steve.
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RhynoCZ
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Joined: 09 Mar 2012
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PostPosted: 16:36 - 12 Sep 2017    Post subject: Reply with quote

New boots? Worn/loose gear shifter linkage?
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MarJay
But it's British!



Joined: 15 Sep 2003
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PostPosted: 16:55 - 12 Sep 2017    Post subject: Reply with quote

My Street Triple does this occasionally. It means one of two things for my bike, either the chain needs adjusting, or the linkage needs re-greasing again.
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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.
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MCN
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PostPosted: 17:25 - 12 Sep 2017    Post subject: Reply with quote

Clutch not fully releasing the drive.
Cable stretched.
Adjust cable

https://www.triumphrat.net/sprint-forum/196393-1050-clutch-adjustment.html
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Polarbear
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Joined: 24 Feb 2007
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PostPosted: 22:50 - 12 Sep 2017    Post subject: Reply with quote

MCN wrote:
Clutch not fully releasing the drive.
Cable stretched.
Adjust cable

https://www.triumphrat.net/sprint-forum/196393-1050-clutch-adjustment.html


My first thought as well.
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SteveSmith
Nitrous Nuisance



Joined: 08 Nov 2012
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PostPosted: 11:48 - 13 Sep 2017    Post subject: Reply with quote

Thanks for all the suggestions. I'll give those a go and report back whether it solves the problem.
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arry
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PostPosted: 11:57 - 13 Sep 2017    Post subject: Reply with quote

Had the same on my Sprint. Needed the clutch cable adjusted. Did so from the pivot end, and then gave myself a bit more to play with up at the lever.

On chain adjustment - if you didn't know already, the eccentric hub thing on the single sided swing arm to adjust the chain can get hellish to loosen off if left for too long - make sure you adjust the chain once every couple of months at least to avoid that, even if it doesn't need adjusting. Just keeps it free.
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arry
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PostPosted: 11:57 - 13 Sep 2017    Post subject: Reply with quote

Stupid double post.
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MCN
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Joined: 22 Jul 2015
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PostPosted: 16:37 - 13 Sep 2017    Post subject: Reply with quote

arry wrote:
Had the same on my Sprint. Needed the clutch cable adjusted. Did so from the pivot end, and then gave myself a bit more to play with up at the lever.

On chain adjustment - if you didn't know already, the eccentric hub thing on the single sided swing arm to adjust the chain can get hellish to loosen off if left for too long - make sure you adjust the chain once every couple of months at least to avoid that, even if it doesn't need adjusting. Just keeps it free.


Actually the single sided swing arm and the eccentric chain adjustment hub is not hellish to adjust if left too long.

For the record, It's a Pig's Fanny's Arse of a beast if left for a few months... Evil or Very Mad

It can even require a visit to a bike garage (or dealer) and they will gouge three or four hours labour out of you for the pleasure.

I bought the tools to do mine myself when it seized 'twice' Smile

The chain hardly wears so it rarely needed adjustment. Why Adjust if it is not slack?

Well adjust it. Even if it is not slack. The trick is to not let the hub get too comfortable in the swing arm.

There is a bit of a 'procedure' to fix it if it does seize though. Not mega technical but the design means you will need a couple of kind-of-specialist tools to rip it apart.
Special as in you will only ever use them to do this one job. Smile

I got shot of my ST for these reasons. Sad It was a fairly comfy bike with not too bad performance.)

Edit in case you meet with disaster:

To do the hub repair you need a big effin socket 47mm (3/4" drive is best. Unusual to find one with a 1/2" drive that size.
***Warning*** Check that size before you buy. Shifty

A 1/2" to 3/4" drive adaptor.

A 1/2" Torque wrench (to set the pre-load on the way back out.)

A pair of Massoooff External Circlip Pliers Ebay will have.

A tube of Anti Seize.
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SteveSmith
Nitrous Nuisance



Joined: 08 Nov 2012
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PostPosted: 09:14 - 14 Sep 2017    Post subject: Reply with quote

Clutch cable adjusted, problem solved. I've got silky smooth changes now.

To be honest I'm not sure if I'm delighted that it's fixed, or annoyed that the problem I've been putting up with for months turns out to have a 30 second fix!

Either way, thanks BCF for the help. Thumbs Up
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Polarbear
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PostPosted: 10:06 - 14 Sep 2017    Post subject: Reply with quote

SteveSmith wrote:
Clutch cable adjusted, problem solved. I've got silky smooth changes now.

To be honest I'm not sure if I'm delighted that it's fixed, or annoyed that the problem I've been putting up with for months turns out to have a 30 second fix!

Either way, thanks BCF for the help. Thumbs Up


You live and learn Thumbs Up
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