uh, 29 rings a bell for me, but im not certain.

I have a new sprocket nut and have just checked it is a 30mm socket.
I usually change the nut and washer when I replace the front sprocket the nut has a very fine thread and is only avaible from Yamaha about £6 I think.

Just checked the socket - 30mm.

Thank you, so its 30mm then :)

Have you guys had a problem that the socket is hard to hold in place on the nut when you try to turn it with much force? Is that normal or do you think i need to get a new socket?

It is normal for the socket to try & slip off because the nut is quite shallow.
Best to get someone else to hold the rear brake on so you can support the socket while you undo the nut.
Bob

i agree its a two man job to undo a tight sprocket nut , if you try to do it your self your going to end up in a painfull heap on the floor. these nuts can be very/very tight . the worst one i have known was on a 1200 bandit we had to put a 3 foot scaffalding pole on a strong arm, and stand on that , the reason was the previese owner had put some v/ strong thread lock on . good luck and be carefull. zigzag:thumbup1:

To save any unnecessary struggling ( like ive done in the past and was unsuccesful) I take the right size socket to the farm next door or the garage up the road and ask them to wazz it off with their Air gun, its 2 seconds of a job and no skin off their nose, better than timber through your back wheel over swing arm trying to lock it and back brake stuff trying to crack it with a socket, bar and hammer.

nice tip
I just talked to my dad and he has a electrical "gun" that hammers, its for the wheel bolts on cars really but I think i can fit a 30mm socket on it.

Im gona go and get a single 30mm black "powersocket" today at the store. And since its gona be a 3.5 hours drive il pick up a torque wrench and some other sockets to improve my toolset at the same time.

oh boy...this awaits me soon too :funmeterno:

and if the damn sprocket is fused to the splines try PB Blaster and a gear puller....

Can be a pain in the arse. I also busted a stud for the rear sprocket upon torqing.

Icehole, I would not worry too much. I removed the front sprocket a few weeks back to clean out some junk that was stuck behind it. It was easy, the engine compression was enough for me to loosen the nut. So you may have a problem ahead.. but you may not.

wrong sprocket
 

The front sprocket nut went off easy today, all went good, i changed the rear sprocket and all, but then i was going to put on the new front sprocket and it doesnt fit!

I ordered a set on wemoto so i dont understand why the front sprocket is different. The old sprocket is wider then the new one. The new front sprocket was the same diameter and 15 tooth all seemed good but its thinner..the new front sprocket goes too far in on the axle :(

Bummer...

I have a 15T front sprocket I got from WEMOTO as well, but have not yet tried to install it.

How does it not fit? Will it bind on the retaining plate?

It fits but it doesnt "work". You can put the sprocket on, everything looks correctly except that this sprocket isnt "wide" enough so that it will go too far in on the axle.

Look at this picture and see what i mean, where it says 9.5,thats the thing i mean, its less then the original and so it goes too far in on the axle, using it would be impossible.

Im starting to think maybe wemoto put in a wrong front sprocket for me by accident? Can you check what type your front sprocket from wemoto is? The one that came in my set was a JTF 1577.15



http://www.jtsprockets.com/fileadmin...ge/jtf1577.jpg

Turn it the other way around and fit it in!? :rofl:

Vando :innocent: