Thoughts on the condition of these sprockets?

[Neoday2]

 

Hello,

Since this is my first sprocket and chain replacement, I thought I would get your advice on the condition of my sprockets. The chain has a tight spot and the red stuff that looks like rust (read it is usually when the orings go bad).

How much life is left in these sprockets if the chain did not need replacing?

[Bones]

If your chain didn't pack it in you still had plenty of life left in your sprockets.

[balky1]

Worn sprocket has very sharp tips of the teeth. Or teeth visually differ from normal shape.  Also, when your chain gets stretched too much usually the sprockets give you a clue about that by getting worn out pretty fast.

[FJmonkey]

The front is looking better than the rear. If you are putting a new chain on then do all three. That way you know the mileage of all three. 

[PaulG]

Not only do the teeth get sharper but the gap between becomes larger/more concave.  (In the "good-ol'-days" when the teeth started to bend, you just flipped it around so the bent back straight...  )  You can remove the rear one and bring it into a shop to compare it with a new one.  It's human nature to get used to things as they wear, and not notice how bad they are until they break....       That's why some genious invented preventive maintenance.  Comparing it to a new one will solve that doubt immediately.

Just remember the older it gets the faster it will wear.  If it looks like it's got some life in it still, just keep an eye on it 'cuz it may wear out before you know it.

And like they said above - do all three at the same time if you can.

As far as the rust goes, if it's just light surface rust on the pins or links, then it could be from winter storage (being in Minnesota).  If there is rust between where the o-rings are, then best to replace it.

[Rich Pleines]

Decent article on chain/sprocket replacement in a past issue of Motorcycle Consumer News.

Quote " You should always replace the sprockets at the same time as the chain. Running a new chain on worn sprockets will cause rapid wear, leaving you needing to replace the chain again in very short order, so it's a false economy to replace just the chain."


Link to full article

http://www.motorcyclenews.com/news/2014/june/how-to-change-chain-and-sprockets/

[fjfool]

i very much agree with the majority of previous posts
the FJ's mill has a lot of umf and i would replace the drivetrain as soon as you question its condition

if you contacted Cory, i am sure he could cross reference some sprockets for you and get you into this kit for a similar price:

https://www.motomummy.com/chain-kits-with-steel-front-and-rear-sprocket/driven-evo-spec-yamaha-530-superlight-steel-chain-kit-with-est-technology/

[bigbore2]

just a chain/sprocket question while we are on the subject. On my dirt bike using O or X ring chains, I plan on using 3 front sprockets per chain with 1 rear sprocket.  I am using steel sprockets here on both my dirt bike and my 1100.  JT brand. I just changed front sprocket, had around 10 or 11,000 mi on it.
Is that ratio still the same with our 1100/1200s? and what kind of total mileage do you get with chains , front sprockets, etc?

[racerrad8]

BB2,

We took the last set of chain and sprockets from Mike Ramos' bike last year. I wasn't there so, since he was worried about an upcoming cross country trip, they were changed out. They had a little over 30K on them.

When I got to the shop and saw them I asked Robert why he changed them as they looked great. No pointing or curling of the teeth.

His current set now has just over 15k and they do not show any wear.

I did get Mike to start using Tri-Flow. He does not pay any special attention to the chain as far as lubing it. Mike is always telling me "I live it semi regularly..." He does make sure it gets lubed when he is riding in the rain.

Plus, it cleans off the wheel easily and there is zero build up inside the sprocket cover.

I have set a goal of 50K on the current chain and sprockets.

We are using DID 530zvm-X chain, PBI 18t front and JT rear sprocket.

As far a sprocket sizes, if you set up with 18/38 the mighty FJ has the torque to pull it without any issues.

Randy - RPM

[FJmonkey]

Long live Tri-Flow and the chain it lubes....

[ribbert]

.....On my dirt bike using O or X ring chains, I plan on using 3 front sprockets per chain with 1 rear sprocket.

Is that ratio still the same with our 1100/1200s? and what kind of total mileage do you get with chains , front sprockets, etc?

Dirt bikes generally run smaller fronts and bigger rears than road bikes. The rule of thumb, and for the longest life on the FJ (or any road bike) is to replace all three together - always.

As far as chain and sprocket life goes, it varies enormously depending on the quality of the components, riding style, storage and maintenance.

My chain has been on so long I have no idea how many miles are on it but it would have to be over 50,000kms. I have an automatic oiler, never wash it (because of the oiler)  have no need to adjust it between tyre changes and it gets a pretty hard life.

A cheap chain is one of the worst investments you can make on a big road bike. You can go cheap on plenty of other things on the bike but chain is not one of them, IMO.

Noel