Changing Sprockets

Bike aesthetic/mechanical/electrical modifications and general wrenching advice.
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Champ87
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Re: Changing Sprockets

Post by Champ87 » Mon Apr 20, 2020 1:10 pm


Prof J wrote: Mon Apr 20, 2020 9:52 amChamp87, did you note an MPG change/increase?
No. Average fuel consumption since the change is within 1 mpg of what it was before. Calculated from tank-to-tank refills my SE averages around 39 mpusg (47 mpig).

Maybe more highway cruising would show a slight improvement but right now that's only speculation on my part.
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Re: Changing Sprockets

Post by motoman » Tue Apr 21, 2020 5:30 am


Wow. Thanks for being honest.

So the whole project was a waste of time?
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Re: Changing Sprockets

Post by motoman » Tue Apr 21, 2020 5:40 am


This is a Supercharged motorcycle, not a cruiser. I love to twist that throttle and blast into Warp Speed! I love to hear that chirp.

It sounds to me like you might be happier on a Concours 1400. Possibly a Ninja 1000 that's been flashed.
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Re: Changing Sprockets

Post by Champ87 » Tue Apr 21, 2020 1:19 pm


motoman wrote: Tue Apr 21, 2020 5:30 amSo the whole project was a waste of time?
No, because if you read the whole thread you'll see that I have never mentioned fuel consumption as a factor in my decision to change gearing. I was asked if fuel consumption changed - I responded with a factual statement.

With the flash and the ZX10 header the bike can easily handle the higher gearing. It feels slightly more relaxed at cruise without any noticeable loss of performance or excitement when I wind it to the stop. Goal accomplished.
motoman wrote: Tue Apr 21, 2020 5:40 amIt sounds to me like you might be happier on a Concours 1400. Possibly a Ninja 1000 that's been flashed.
You're entitled to an opinion but I can tell you you're wrong. I know what makes me happy. I bought a Sports Tourer because sometimes I want to use it like a sports bike. Other times I may want to take it on a long road trip loaded with luggage. I love twisting the throttle too but if that was my only need then I would have gone out and bought a pure sports bike not a heavyweight like the SX.
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Re: Changing Sprockets

Post by prettybirdSE » Thu Jun 03, 2021 6:09 pm


Ha!Cooter's post up there showing someone's H2 sprocket removal...that was me back then.

Seriously though.Line the bolt up to the 7-8 position to allow room from the swingarm casting and either use the rear brake or put in gear.No need for an angled handle on these.Any wrench will do.Just looked at mine.Much easier than the H2 using our centerstand. :cheer:
One may have to loosen the lower chain guide to slip the sprocket clear of the housing,but easily doable.I know I didn't take that off(when I went to install a CF guide),only loosened it cause that underbolt in there just didn't want to come out,so I retightened it.
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Re: Changing Sprockets

Post by EsharoyeH2Sx » Thu Jun 03, 2021 9:44 pm


Snakes709 wrote: Tue Mar 19, 2019 1:52 am Think you over thinking the rear sprocket. Here is a video of EC’s hyper drive on the H2. Same steps for changing sprockets

Thanks!! I needed this video
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Champ87
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Re: Changing Sprockets

Post by Champ87 » Fri Jun 04, 2021 12:38 am


EsharoyeH2Sx wrote: Thu Jun 03, 2021 9:44 pmThanks!! I needed this video
No you don't.

That video is for an early H2. If you read the posts after that one, you'll see that it's a different setup. Our bikes have an inner axle that runs through the outer hub axle. To remove that inner axle, the wheel must be removed, to remove a cotter pin to undo and release the axle. As a side note, later H2s use the same arrangement as the H2 SX.

To see what's really involved, check out my guide to changing sprockets on the previous page of this same thread.
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Re: Changing Sprockets

Post by Snakes709 » Thu Feb 03, 2022 7:33 pm


Really trying to figure out why the manual and your guide says you need to drain the coolant and remove the clutch slave to get the front sprocket off. Are you doing this without removing the chain and the chain is in the way? Or does the 19 tooth sprocket not clear them when installing? I cut my chain and slid the front sprocket off without having to remove or drain anything. Waiting for new chain and sprockets to come in.
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Champ87
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Re: Changing Sprockets

Post by Champ87 » Fri Feb 04, 2022 12:16 am


Snakes709 wrote: Thu Feb 03, 2022 7:33 pm Really trying to figure out why the manual and your guide says you need to drain the coolant and remove the clutch slave to get the front sprocket off. Are you doing this without removing the chain and the chain is in the way?
If you're cutting the chain and rolling it off the sprocket then you should be OK without removing the clutch slave cylinder.

In my case I was just changing sprockets. You cannot slide the front sprocket off the output shaft with the chain in place and, without cutting the chain, you cannot lift it off the sprocket because there's a guard to prevent that happening. To lift the chain off the sprocket you need to remove the guard, which in turn means removing the clutch slave cylinder. Someone said they were able to leave guard in place and simply bend it to remove the chain. Not something I would do to my bike.

That's probably more information than you needed but you asked, and others may be curious too.
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Re: Changing Sprockets

Post by Snakes709 » Fri Feb 04, 2022 2:34 am


Champ87 wrote: Fri Feb 04, 2022 12:16 am
Snakes709 wrote: Thu Feb 03, 2022 7:33 pm Really trying to figure out why the manual and your guide says you need to drain the coolant and remove the clutch slave to get the front sprocket off. Are you doing this without removing the chain and the chain is in the way?
If you're cutting the chain and rolling it off the sprocket then you should be OK without removing the clutch slave cylinder.

In my case I was just changing sprockets. You cannot slide the front sprocket off the output shaft with the chain in place and, without cutting the chain, you cannot lift it off the sprocket because there's a guard to prevent that happening. To lift the chain off the sprocket you need to remove the guard, which in turn means removing the clutch slave cylinder. Someone said they were able to leave guard in place and simply bend it to remove the chain. Not something I would do to my bike.

That's probably more information than you needed but you asked, and others may be curious too.
Thats what i was thinking. Although if i did remove everything it would make it easier to clean the area lol.
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