Cmon guys... Your gonna tell me that no-one out there has changed their front sprocket before?

 

I guess they can't believe your asking. So...it's easy. Yes put it in gear. And if you don't have help brace the front tire against something cus' it's a 60 lb torque nut. 30mm, im pretty sure. Be sure to pry the lock lip out a little. You should be able to do it with a good wrench. For something that tight I use a length of steel pipe on the end of the wrench for leverage. Makes it easy.

 

they must have changed in one year, because my '05 was a 36mm and was torqued around 55lbs...not sure what '06 are...

 

Certainly that could change. As well as the torque. As well as the lock ring configuration. Your manual is a good place to start and things should line up. I think the forum can offer you a shop manual to download. Thats where I got my 07'. Interestingly my 01' R6 is the same size and torque as my R1.

 

I kinda figured it was easy to do. I have been procrastinating on working on my ride for months. I finally got motivated to get out there in my garage and work. Its a nice day, about 35 degrees. The sun is warm, so it feels really comfortable out. I open my garage door, break out the tools and start pulling the rear tire off when the sky turned a dark gray and the wind kicked up. It took me 5 minutes to pull the rear tire off and start breaking the nuts off the rear sprocket when I looked out my garage door to see a freaking blizzard of snow! :scared WTF? I swapped the rear sprocket and took the old chain off the bike when i realized I don't have the right size socket for the front. So I cleaned up and closed the garage. No sooner did I go into my house and start scrubbing the grease off my hands did the snow stop and the sun came back out. I guess it was an OMEN... :nforc: So I just sat my fat ass down on the couch and posted the question. Ill try to get out there again next weekend.

 

36 mm is correct

 

Like "gypsyjack" i use a good lenght of steelpipe, put in 1st gear and push the foot break hard at the same time as i pull the pipe (with socket).

Some people use a impact wrench but i'm not sure how good that is for the transmission.

 

Not to sound any dumber, but is it reverse threaded or standard?

 

it's standard thread..

 

Didn't you know that was coming. It's cool dude.

 

Ok...I don't bother with brakes or putting into gear....usually, when the sprocket goes the chain should be replaced to, basically a whole new kit...I use a long bolt,thread through the chain,nut it at the end and when you tension the chain by removing the sprocket nut, upper chain runs forward,lower backward,bolt stops it and off comes the sprocket nut...easy, no stress on the gearbox...works for me:hammer:

 

I just have to ask, how do you hold it when you retighten the sprocket nut to 85 Nm?

 

Thanks for the tip Scrat. Like I said before "too bad i didnt ask for advice BEFORE I took the chain off :hammer:

 

I cant get that damn nut off. Hehehe. I mean the one holding the sprocket on. Its so damn tight it wouldnt budge.

 

Sure, they are tightened real hard but with the method i wrote of before I've allways managed to get the nut loose.

If you have thrown away the old chain, use the new one, it's the upside of the chain loop that have to take all the force while loosning the nut.
So all you need to do is put on the chain and tie the ends together with a piece of string or something, of course on the underside of the chain loop, if it's not, you are turning the nut the wrong way...

Since the nut is pretty short you must use the right socket, otherwise it will wigle and eventually destroy the nut (and maby som knuckles).

You also need a wrench extention, unless you are Popeye :crash

Mind over matter

Good luck

 

I put the new chain on the bike, put her in gear. Had a buddy of mine step on the rear break and we used a 3' length of pipe on the damn wratchet and got nowhere.

I'm thinking ill just ride it to the shop like it is and have them swap it for me. Just hate having to do that.

 

What a Bummer.

Have someone removed that sprocket before and used highstrength Loctite or something like that?

I've done that work on two of my R1s and i allways managed to loosen the nut by myself, just meening, it should be "doable" the way you did it.

 

Maybe you should just go buy yourself an Impact...I picked up a Dewalt at Home Depot works even without a chain...

 

yeah, i know...just trying to watch my spending right now.

 

The first time I took mine off it was a bear...what I did was, wrapped a solid piece of stainless rod with a towl stuck it through the rear wheel catching the jack stand on both sides...took my jack handle (it's about 4 foot long) and put the wrench through the opened end and cranked on the nut...It came off effortlessly...this was with the chain still intact...