Thanks Unfazed, will try to find some


I've just looked up tap sizes for 5mm diameter holes, and it appears for an m6 tap, you need a 5.2mm hole. I'm wondering if this is the issue since I'm trying to tap a 5mm hole.

Managed to drill the hole 5mm diameter 22mm deep, had to use carbide drill bits in the end, cobalt were useless!


Now I've tried tapping the hole and having no luck again, the taps are HSS to I've got a feeling I'd need carbide taps too (if they even exist??)...




How on earth did you do it Unfazed??

I'm using a Heller (German) Cobalt bit, so would have thought the quality would be fine?


http://www.ebay.co.uk/itm/191884884799?_trksid=p2057872.m2749.l2648&var=490991673100&ssPageName=STRK%3AMEBIDX%3AIT


However I am using a 12v hand drill which is possibly not the best? Would have though a drill is a drill, as long as it turns what more can it do 


I'm very tempted to put some lock-wire through the holes of the circlip and leave it at that at this point 

All reassuring to hear thanks guys!


I have ordered a 3.5 cobalt drill bit so hopefully that will work, I'd imagine once I've broken through the case hardened surface then it should be much easier. (touch wood). 


Will keep you updated.

Thanks guys, think I'll just weld the nut on with two tack-welds for the time being if the local garage will do that. If not I will probably try the circlip and bolt method.

In my head it seems like a good idea...
but also in my head these sprocket nuts shouldn't be failing or require such high torques as they are under no load?!?!

Yeah that does make me wonder, perhaps if Yamaha used a reverse thread, then the nut wouldn't spin off?

Hi,


Bought a 2002 FZS600 last month, was praying that I wouldn't be one of the unlucky ones with a stripped countershaft, but looks like I am 


I removed the front sprocket cover last week and was relieved to see no welded nut, and the sprocket was still there, so I assumed it was all fine. However after replacing the sprocket for a new one and tightening it back up, it would tighten a small amount, and then loosen again, so I'm lucky it didn't come off over the last 400 miles I've done.
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The threads on the shaft look shot, so I'm not sure if re-threading would work?


I'm thinking I may as well weld the nut to the shaft, would I have to weld the full circumference of the nut, or would some spot welds suffice?


I'd like to be able to grind it off and replace in the future if possible.


Also, will a garage be likely to weld this for me, or would it be classed as unsafe? 

Could it be due to the fact that it is one of the highest BHP bikes that can be legally restricted to the new A2 licences?


That's the reason I've just bought one anyway...

Price and location?

Hi Tommy,


Thanks for the welcome 


I think the inflation in price is mainly due to the new licencing laws, and there seems to be a loophole whereby those with restricted (A2) licences (like myself) can ride them, whereas before there wouldn't have been such a niche market.


I'm not too bothered about cosmetics to be honest, just mechanical issues like loose front sprocket nut which I will be wary of.


I will definitely keep you updated though!

Hi,


Looking for a FZS600 ideally under £1000, near East Yorkshire or East Midlands (or inbetween).


Thanks,