Output shaft

Dtaylor12345 · Two Stroke Sniffer Joined: 24 Oct 2018 Karma :

Hello ive resently changed my sprockets I've noticed there is a very tiny amount of rotatinal movement on the splines. when you move the sprocket on it's own without the shaft .. I mean it's not even a 1mm I've attached a video please don't Lough lol you can see certainly see the sprocket moves slighly without the shaft but it's hard to get a clear video of it without it just moving the shaft like normal but you can tell from some of the video.

Online there is qwite a few different people with this but there movemet is very bad and it's lead to needing a whole new shaft and a engine rebuild.
I mean my bike is only a year old with 10k miles I know it's not bad now but what I don't want haft to do is worry about it going worse then it being really bad after anouther 20k .

What i want know is iff mine is the normal tolerance so u can accturaly fit the sprocket?

Or does it look like its going be allot worse ? I have a year left on warrenty so the last thing I want is to find out the play as gone double on size for when my warrenty ends . What's your opinions please people? I hope you understand my concerns. Sorry for my bad spellings I'm dyslexic. I am.basicaly just trying to cover my back inacse it's going mess me up in 2 years time as I believe any play just increases over time ?. I will really appreciate people facts / opinions. Or any advice iff needed like I say it might look abit silly and picky but I'm sure you can understand that I don't want it going worse .
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DT

Riejufixing · World Chat Champion Joined: 24 Jun 2018 Karma :

Dtaylor12345 · Two Stroke Sniffer Joined: 24 Oct 2018 Karma :

Dtaylor12345 · Two Stroke Sniffer Joined: 24 Oct 2018 Karma :

Video like I say it's very small but I believe it should of no movement what so ever a
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DT

P. · Red Rocket Joined: 14 Feb 2008 Karma :

Looks OK...

I'd really not worry about that.

bikenut · World Chat Champion Joined: 21 Nov 2011 Karma :

mmmmmmmm this sprocket is "bolted" on and may also have a locking tab.

Please show the bolt and any washers that are to do with it.

There is some play there but usually that type of sprocket holding arrangement relies on a good fit between the sprocket and output shaft, else the bolt arrangement and locking devise can come loose due to drive and overrun forces.

Always grease those splines else they can corrode together making removal difficult and result in more play.

Since the bike is still under warranty, show the supplier and get their opinion.

Note, does the chain clear the raised portion of the sprocket, the chain plates should not be raised by the raised portion of the sprocket. Is the raised portion of the sprocket rubber, its not absolutely clear in the video......

and what bike is it please?

post a pic of the output shaft splines, any ridges/wear?? also when you removed the bolt, how tight was it, very tight, tight, or seemed a bit on the loose side for the application.
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Dtaylor12345 · Two Stroke Sniffer Joined: 24 Oct 2018 Karma :

thanks allot for the reply my bike is a Honda cbr 650f I've accturaly used some copper greece to try and protect it abit more . There is rubber on this sprocket. My splines looked like this when i first removed the original sprocket so when I refitted I tried my best clean the surface rust with a cloth . I believe this sprocket is designed to move side to side ( NOT like on video) it moves side to side so it can self adjust the chain alignment.

I was worried incase that original side to sode play was wrong at first but then after my research that's normal. So the only thing I don't like is the fact it can move about half a mill rotatinal. I probs look very picky I know but after seeing bikes online there has been people who have noticed they have got qwite bad play and it ruins the bike . They have also been Honda's so I can't help but worry . Iff it was a 10 year old bike with 50k I might be able to accept it .
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DT

Dtaylor12345 · Two Stroke Sniffer Joined: 24 Oct 2018 Karma :

Shaft
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DT

Dtaylor12345 · Two Stroke Sniffer Joined: 24 Oct 2018 Karma :

Dtaylor12345 · Two Stroke Sniffer Joined: 24 Oct 2018 Karma :

bikenut · World Chat Champion Joined: 21 Nov 2011 Karma :

Did the old sprocket have that same side to side movement you talk of, or, was it firmly clamped to the output shaft by the bolt a washer??

MJE sprocket, a pattern one ??

Measure the max thickness of the oe sprocket and compare with the new, same or slightly thicker than the new one??
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bikenut · World Chat Champion Joined: 21 Nov 2011 Karma :

it has one big washer/ spacer with one nut

you mean bolt.

splines look ok but a bit rusty, some wear on spline flanks/sides suggesting some movement of the old sprocket due to drive/overrun loads.

I would contact Honda UK to ask if sprocket is "clamped" to the output shaft via the washer and bolt, which is usualy with this type of arrangement.

Suzy and Kwak and probably yam are effectively clamped.

Measure thickness of old and new sprockets but ask honda uk to be sure.
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Dtaylor12345 · Two Stroke Sniffer Joined: 24 Oct 2018 Karma :

bikenut · World Chat Champion Joined: 21 Nov 2011 Karma :

If the system is designed to allow "wobble" then so be it. I would still check with honda uk. I know honda use some cheap and nasty designs sometimes.
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Dtaylor12345 · Two Stroke Sniffer Joined: 24 Oct 2018 Karma :

Dtaylor12345 · Two Stroke Sniffer Joined: 24 Oct 2018 Karma :

cb1rocket · World Chat Champion Joined: 30 Jan 2010 Karma :

Don't use copper grease, certainly not on a moving part. Copper grease is abrasive. Use LM based grease.

And the play in that sprocket is very normal, Loads of bikes are like this. Any tighter tolerances and you would struggle to slide on the new sprocket!
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dydey90 · World Chat Champion Joined: 01 Oct 2013 Karma :

This is the third thread, by the same guy, about the same problem, on the same bike.

Either be satisfied with the answers you’ve been given three times, or let a mechanic look at it.
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Past: CBR125,~~ER6f~~ NINJA 650, ZZR600 Current: VFR750

Pete. · Super Spammer Joined: 22 Aug 2006 Karma :

That movement is perfectly normal. Bolt it up and ride on.
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132.9mph off and walked away. Gear is good, gear is good, gear is very very good Very Happy

bikenut · World Chat Champion Joined: 21 Nov 2011 Karma :

At what point I wonder is the op gunna post a thread about a weird noise ( clunk ) and a jerk when opening the throttle, and on the over run, and that the sprocket keeps coming loose, its only an 8mm bolt by the looks of it after all.

What did honda uk say about the fit of the sprocket on the shaft exactly?
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MarJay · But it's British! Joined: 15 Sep 2003 Karma :

Looks fine to me. There might be some movement engineered in for some reason. I doubt it's an issue.
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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.

P. · Red Rocket Joined: 14 Feb 2008 Karma :

Dtaylor12345 · Two Stroke Sniffer Joined: 24 Oct 2018 Karma :

P. · Red Rocket Joined: 14 Feb 2008 Karma :

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

So OP hasn't got the answer he wants... Why doesn't he just go and complain to Honda or the Sprocket manufacturer if he's so sure there's something wrong?
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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.