Sprocket or not to sprocket!

PwnDirect

PwnDirect

PwnDirect

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So decided to adjust & clean my chain few weeks back, used some muc-off degreaser (facepalm). Long story short corroded chain now & kinky mess ( not in a good way ) loads of seized links. etc

So going to get a new chain probably a D.I.D 428VXGB

Now I know technically you should change the sprockets with the chain, but visually appear fine. 3400 miles on the bike total with stock sprockets.

Ohh & its a 2009 YBR 125c


So should I bother changing the sprockets or just leave them for now?
 
Whether you need to change them or not depends on how worn the teeth are. If they are still perfectly symmetric than they should be good to go again, but if they are starting to look worn on the thrust side of the teeth, or are starting to hook then it would be a waste of money fitting a new chain to them.
 
I'd change the sprockets anyway, they're only around £20-30 for a set and you get peace of mind you're not chewing your nice shiny new chain up.

I cleaned my chain last night, inspected the sprocket teeth and informed my wallet it was going to be very lonely at the end of the month :p
 
+1 on changing sprockets with the chain.

You may as well while you're getting dirty and greasy in that area and the cost of doing so is minimal.
 
Changed chain and I dropped 2 teeth on the front and upped the back by 2 to gear it like a 400 :) feels quite responsive now and when you are lazy you leave in top gear and wind on like a 1000cc (well, 1040cc with overbore) scooter :)

Maybe worth considering (but sports touring tyres last 2k miles if I'm lucky, so it's not all good)...

If you're gonna do one job (new chain) the other bits may as well get done too, I reckon.
 
Change them, I did my chain last year on my new bike, sprocket looked fine BUT thought balls to it and got an epic golden set that looks sweet. Just use it as an excuse to buy something nicer and shinier lol
 
acemastr said:
I imagine your top speed is now about 45 lol
Click to expand...
Heh, well I reckon it tops out about 150 on the clock so 140 ish now, which is quick enough for me. With the standard sprockets the bike would do 170 on the clock, but take longer to get there, so was mostly academic.

As it is I much prefer acceleration and flexibility that lowering top speed brings and rarely top 100 these days - the risks are too great and to be honest I don't need or want to go any faster on the twisty/up down/dry stone walled roads I frequent. Another downside is fuel consumption isn't great and light comes on after 120 hard miles. So, tyres, fuel and needing to restrain yourself thanks to harder acceleration are downsides. More instant power is worth it though, and I am glad it limits what I will ride at (top speed wise).

I'm sure many have maxed out their bikes but in the cold light of day the consequences of being caught have sent a chill down the spine!
 
I categorically know that your YBR will never... EVER hit 170kmh, not even indicated

I also know that your YBR won't hit 140kmh either

It's a 125, you max it out constantly, it has no purpose other than to be thrashed to actually make it move!

*Edit* just realised you're not the OP, why in the world are you posting like you are in here?
 
acemastr said:
I categorically know that your YBR will never... EVER hit 170kmh, not even indicated

I also know that your YBR won't hit 140kmh either

It's a 125, you max it out constantly, it has no purpose other than to be thrashed to actually make it move!

*Edit* just realised you're not the OP, why in the world are you posting like you are in here?
Click to expand...

Who? me? I was just someone adding +1 to the theory of changing sprockets as well as chain at the same time which was the original question, and suggesting changing gearing at the same time to improve rideability at the expense of top speed, though a 125cc (as per the OP) may find options limited, probably not much point. Well I guess an extra tooth on the back to get to max speed faster maybe.

And I wasn't talking about km/h.
 
Ok heres an update;

so I ordered THIS but they sent me 428vx-124FB :rolleyes:
few emails later with questions such as "is it gold?"
They sent me out 428VXGB-124 now in the ad above it clearly says 122 links & in places 118 links & the important bit for a Yamaha YBR125 (07-11).

So this 124 link chain is obviously goin to be too long... unless i stick massive sprockets on or take links out (which is bad? :confused: ).

So do i turn around again & say oi this isn't the right chain & wont fit or do i give up & take links out :(

To be honest yeah the sprockets are £20/30 but everywhere wants £10 delivery & am skint so decided against changing them (yeah if it mess's up the chain up the chain am down more money. but right now i just want a bike that works :(
 
Well if you're putting the new chain on yourself removing a few links isn't gonna add much to the job. That said if they advertise it wrong and that swayed your decision I guess you have a right to be annoyed ;)
 
Well as someone who doesn't own a chain breaker removing links cleanly is a pain (managed to borrow one after many phone calls)

When I order something I expect to get what I ordered or at least have them say ohh we don't do a 118 chain but you can mod this 124 chain instead.
 
You don't need a chain breaker, you can simply use an angle grinder, or even a dremel to grind the head off a rivet to break the chain.
 
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