Was this a lucky break or not? – OLD Bull Trailriders

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September 26, 2010 at 8:08 pm #98987

Mick D
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Dunno if you’d call this a lucky break or not. Yesterday at the HVMCC MX practice day a mechanical failure saw Connor get thrown from his KX85 and he took a fair tumble too. The KX85 and KX65’s front sprocket is held on by a circlip. I have seen one fail in the past on Moose’s KX85 but not with the same result we had happen yesterday. When the sprocket came off yesterday in got jammed between the frame and swing arm which compressed the rear suspension, that combined with the back wheel locking up caused Connor’s big off in one of the higher speed sections of the track. Luckily Connor got out of it with only a minor graze on his elbow and once I got the bike fixed he was ready for the next moto of the arvo.

I don’t mind telling you that sprocket was a bitch to get out of where it ended up. I checked it out last night and I cant believe it even fitted through the gap there, to end up where it did. One good thing that came out of it was I didn’t have to walk the track looking for the lost sprocket. :laugh:

September 26, 2010 at 8:27 pm #187933

Fez
Member

Don’t tell us you used that same sprocket again. Its bloody cursed, put a new one on you cheap Barstard.

September 26, 2010 at 8:35 pm #187935

Mick D
Member

Uncle Fester wrote:

Quote:

Don’t tell us you used that same sprocket again. Its bloody cursed, put a new one on you cheap Barstard.

Where was I gunna get another sprocket on a Sunday arvo you silly bastard?? :laugh: I was lucky that I had a spare circlip in my tool box.

September 26, 2010 at 9:34 pm #187936

Greg
Member

Use a new circlip every time (minimal cost ) and clean the sprocket with petrol and the new circlip, fit them and put some salastic over it to help retain the circlip. Most circlips like that get stretched and shouldn’t be reused after one use, further more people normally over open the circlip when fitting it, you should just open it enough to get it just on if you understand what I am trying to say. A good inspection of the bike pre riding would also be helpful for noticing a stretched loose circlip. That chain would want a real good clean and inspection now Mick I think

Lucky escape for Connor, cant say I would want to experience anything like that :blink:

TB

September 26, 2010 at 11:26 pm #187934

mike
Member

Looks pretty lucky to me Mick espiecally since young Connor was’nt hurt too bad. My KTM has the circlip and I’ve never put a new one on when changin sprockets. I’ll give TB’s advice a crack next time though.

September 27, 2010 at 12:40 am #187938

Bruce Curtis
Member

Touch wood eh Michael?

I hate circlips on vital bits like that, but if it’s there I second TBs Silicone advice (you probably already knew that anyway).

Betchya special Dad adrenaline gland went into overdrive as it threw him too…..

BTW Mick Brenton said to say a big thank you for the boots, he used them again yesterday and reckons they are better than his old OXtars.

September 27, 2010 at 1:34 am #187940

Mick D
Member

Mr Blue wrote:

Quote:

Touch wood eh Michael?

I hate circlips on vital bits like that, but if it’s there I second TBs Silicone advice (you probably already knew that anyway).

Yeah circlips aren’t the best option for holding a vital piece of the bike like the drive sprocket

Betchya special Dad adrenaline gland went into overdrive as it threw him too…..

Nah not really,it didn’t realise it was him till the dust settled and I saw a marshall hand him the numbers that where on his body armour that had been torn off. I only got concerned when I saw the marshall looking at the bike and making a slashing motion across his throat to say the bike was going no where in a hurry.

BTW Mick Brenton said to say a big thank you for the boots, he used them again yesterday and reckons they are better than his old OXtars.

Glad to see them being put to good use and also glad they went to such a nice kid.

September 27, 2010 at 2:55 am #187941

Greg
Member

As an after thought Mick, why did the circlip come off? You dont hear of this much yet there are a lot of bikes out there running circlips on the countershaft sprockets and they all couldnt be new or in perfect condition.
If I were you I would be checking rear sprocket the countershaft sprocket alignment especially since not long ago you fitted a longer swingarm ( I know its done some work since then but?) bent rear sprocket, check your circlip groove etc, everything happens for a reason mate and kids safety and our own shouldnt be taken lightly

TB

September 27, 2010 at 3:25 am #187942

Mick D
Member

Trailboss wrote:

Quote:

As an after thought Mick, why did the circlip come off? You dont hear of this much yet there are a lot of bikes out there running circlips on the countershaft sprockets and they all couldnt be new or in perfect condition.
If I were you I would be checking rear sprocket the countershaft sprocket alignment especially since not long ago you fitted a longer swingarm ( I know its done some work since then but?) bent rear sprocket, check your circlip groove etc, everything happens for a reason mate and kids safety and our own shouldnt be taken lightly

TB

Thanks TB, I will give it a thorough going over this evening. There is no lateral play in the swing arm bearings or the wheels. I will check the sprocket alignment with a straight edge while I am at it.The clip that came off wasn’t a genuine Kawasaki one but one that I had in a circlip assortment here. It has held on for close to two years though.
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