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 Front sprocket lock washer 
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TRAIL BOSS
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Joined: Mon 17 Oct, 2011 7:37 pm
Posts: 271
Location: Cooroy
Post Front sprocket lock washer
Getting chain and sprockets shortly. I will be getting a new locking washer for the front sprocket too, as the old one served its purpose well... I never thought to check that the nut was on tightly enough. :nono
After closer inspection I found that the only thing keeping the nut on was the lock washer and a bit of dirt. I undid it by hand :o

The chain I pulled off had a rivet master link but going to be getting a clip one...Is that what everyone else is using?

Just have a couple of questions about the process of putting the new front sprocket back on:

When doing the nut up, do I use locktite and how do I know it's tight enough without a torque wrench?

Also, what is the best way to go about getting the tabs on the locking washer to line up with the flat parts on the nut? It looks like once the nut is tight it probably won't move the extra distance to let the tabs line up perfectly, unless the washer happens to be in the right spot to start with... I suppose when it's all lined up right it's just a matter of knocking the tabs down with a hammer and screwdriver or similar?

Is there a more foolproof style of locking washer that can be used in that situation? (me being the fool)

This is the first bike for me and it is a steep learning curve.
I am not a very mechanically minded person but am trying to learn, so any advice would be greatly appreciated. icon_thumright

Cheers.

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Dave
08 WR 250F


Thu 26 Jul, 2012 4:00 pm
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Post Re: Front sprocket lock washer
i usually just do mine up just bit past hand tight , thats what lock washers for .. if u rattle gun them up they can be a bitch to get off later on ..

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Thu 26 Jul, 2012 4:08 pm
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TRAIL GURU

Joined: Thu 18 Nov, 2010 6:48 pm
Posts: 595
Post Re: Front sprocket lock washer
You don't need it tight, otherwise the sprocket won't turn freely. I learnt this the hard way by tightening it up and then wondered why pushing my bike felt like the brake was one. After a few hours fiddling with the rear brake I realised it was actually the front sprocket providing the breaking :?

I just put the lock washer on and firm up the nut, if the lock washer doesn't line up real well, take note of where it should be, remove the nut, realign the washer and refirm up the nut, a drop of locktite probably couldn't hurt. Finally, bend over the washer with a screwdriver and ride into the sunset.

I have a clip on my chain and seems to have worn a bit thin, probably from the chain guides dontknow I should carry a spare in case, just don't have one yet - I like to live dangerously.


Thu 26 Jul, 2012 4:24 pm
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TRAIL PORN STAR
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Joined: Sat 22 Aug, 2009 11:11 pm
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Location: Brisbane
Post Re: Front sprocket lock washer
steak if your clip is worn better of replacing it as they do come of thne they have been worn down a bit.

i did alot of damage when my clip came loose last time, even the case saver did help

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Thu 26 Jul, 2012 4:29 pm
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TRAIL GURU

Joined: Thu 18 Nov, 2010 6:48 pm
Posts: 595
Post Re: Front sprocket lock washer
Yeah, it's something I always forget about - I assume you can just buy that bit at a bike shop?


Thu 26 Jul, 2012 4:31 pm
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Post Re: Front sprocket lock washer
Steak although ur clip is worn , u prolly find the little poles are now like rivets, they seem to get flatend out ..

im not to sure when guys break chains on rides is it always on the joining link ??

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Thu 26 Jul, 2012 4:31 pm
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TRAIL GURU

Joined: Sun 06 Sep, 2009 4:57 pm
Posts: 450
Location: Morayfield
Post Re: Front sprocket lock washer
on the clip style join links the chain guides wear the pins and clip and they will fail when to worn to far.
allthough i'm a fan or rivet type i have clip type fitted now ( forgot to get a rivet 1 with new chain BangHead )

Hori wrote:
im not to sure when guys break chains on rides is it always on the joining link ??


i have had only 1 chain failure but no idea how old chain was. was a RK XSO fitted to bike when purchased. i put atleast 80hrs on it and a couple links were siezing up so i should have replaced it but you's know the story sign10 .

could have had many link failures if not replacing when worn

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Thu 26 Jul, 2012 5:54 pm
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Post Re: Front sprocket lock washer
best change mine then cause it is worn lol ..

got a spare new one down stairs ..

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Thu 26 Jul, 2012 6:52 pm
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TRAIL BOSS
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Joined: Mon 17 Oct, 2011 7:37 pm
Posts: 271
Location: Cooroy
Post Re: Front sprocket lock washer
Good to know I don't have to do the nut up too tight.
Does the rivet master link make the chain harder to install than with the clip? I haven't looked too far into it, because it seems like it would be a more difficult process.

Cheers for the replies.

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Dave
08 WR 250F


Thu 26 Jul, 2012 9:25 pm
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Joined: Thu 18 Nov, 2010 6:48 pm
Posts: 595
Post Re: Front sprocket lock washer
^ yeah I think so. I have only changed a chain once and the old one was a rivet type, I couldn't get it undone (didn't have the proper tool which I think you need) so the angle grinder came out.


Fri 27 Jul, 2012 7:37 am
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TRAIL HACK
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Joined: Fri 26 Mar, 2010 1:50 pm
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Location: Bris Northern Suburbs
Post Re: Front sprocket lock washer
I've always torqued up the front sprocket nut on my wrf to the correct spec as in the manual, then set the lock washer but it never stays tight for long as every time I've replaced the front sprocket the nut is always loose. The only thing that ever holds it all together is the lock tabs of the washer but I've understood this is something that all four strokers do from my past experience.

My old two banger bikes never had this issue, the sprocket nut was always tight on removal without exception.


Fri 27 Jul, 2012 11:00 am
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