Is this the right 15 tooth front sprocket for a 2004 Gs500F?
Part Number: 504-15
Price: $12.99
Front Steel Sprocket (C/S)/Std/15 Teeth/For 520 chain
http://www.sprocketspecialists2.com/SearchResults.aspx?txtSearch=504
yup
Thank you for the info.
where did u find the sprocket and will it fit my 200f gs500f
that site says 14 tooth is OEM :o :dunno:
... and a 14-Tooth would be wrong. A 16-Tooth comes stock. Have a look at the GS 500E line on the Sprocket Specialists Suzuki Catalog (http://www.sprocketspecialists2.com/ProductSearch2.aspx). It should fit the GS500F -- same engine.
I think I've read something about the GSF having a tab on the sprocket. You might want to check that out.
There might be something to what X5 says. I've noticed that none of the usual sources offer a front sprocket with a reference to the GS500F. But why would Suzuki make a change to something that didn't need a change for 15 years? :dunno:
Anybody take off their GS500F front sprocket? My GS500E has a shoulder on the inboard side, flat on the outboard, held on the spline with a Circlip.
The F model had an oil cooler added too, so they did change a few things. I dunno. But you should look into that.
Any updates on this moutaindew? Did that end up being the correct sprocket?
Bump :thumb: I am also looking to switch to a 15t but I am having some confusion (no surprise there).
According to Kerry's Chains & Sprockets page:
http://www.bbburma.net/Documents/GS500_Chains&Sprockets.txt
It says that the "JTF512-15" is the correct 15 tooth sprocket for an '89-04+ GS.
But according to JT Sprocket's website:
http://www.jtsprockets.com/52.0.html?&L=0&sel_uid=4581&p=
It says that the front sprocket is "JTF 516.16" for the '04+ GS. I assume the .16 is for 16 tooth, so I could reasonly assume the 15T would be "JTF 516.15". But the JTsprocket website does not sell them directly. So I searched for the part # and found:
http://www.motorcycleproshop.com/detail.asp?product_id=JTF512-15
Is that right?
It just seems like I am going in circles here. Who here has the 15T sprocket on an '04+ GS, and where did you buy it and what is the part? Thanks :thumb:
i bought the one from sprocket specialists, and it's the wrong one, you need the one with the shoulder!!!! not from them!!!
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I'm looking into changing my Front Sprocket to a 17T, but am a little confused too. I have an '04 F so I need to get a sprocket with a shoulder on it? Like in this diagram...
(http://www.usdrews.com/images/gdrew/gstwin/jtf516FrontSprocket.jpg)
Quote from: AlphaFire X5 on October 09, 2005, 06:31:51 PM
I think I've read something about the GSF having a tab on the sprocket. You might want to check that out.
Is that the tab the AlphaFire X5 is talking about???
Quote from: flyingbeagle71 on February 09, 2006, 09:37:34 AM
Is that the tab the AlphaFire X5 is talking about???
Yes, that shoulder is the thing I was talking about. The raised edge from the sprocket has to be there, but I can't remember the physics of why. In a few weeks/months I'm going to get that one from JT Sprockets that Phaedrus posted and see how it works out.
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Quote from: Phaedrus on February 08, 2006, 11:00:52 PM
It says that the front sprocket is "JTF 516.16" for the '04+ GS. I assume the .16 is for 16 tooth, so I could reasonly assume the 15T would be "JTF 516.15". But the JTsprocket website does not sell them directly. So I searched for the part # and found:
http://www.motorcycleproshop.com/detail.asp?product_id=JTF512-15
Ok, I went to order one but I didn't complete the check out. They wanted a total of $9 for shipping and handling. :cookoo: :icon_rolleyes: So I sent them an email asking if they are nuts. It seems excessive to me. So I probably won't be ordering from them. Does anyone know anywhere else to get it? :dunno_white:
i bought mine from the dealer for $14
What did you ask for? A 15 tooth sprocket for a 2004 GS500F?
The nearest Suzuki dealer is an hour away. :icon_rolleyes:
correct, but my dealer is only 30min away. they did have to order it.
Cool. Maybe I will just call the dealer and have them order it and hen take a spin up to pick it up. Thanks. :thumb: I refuse to pay excessive S/H on anything. I don't need it that bad.
BTW, Motorcycle Pro Shop wrote back to my email where I said "Are you insane? $9 for shipping and handling on a front sprocket for a motorcycle? I know one place where I won't be buying a sprocket from". They simple responded with: "$9 is our minimum shipping rate." :icon_rolleyes:
Is it hard to change the front sprocket? do you have to change the chain or the rear sprocket too?
I'd like to change mine out too on the 94. Not much happens below 4 grand, and roll on at 4-6k is dismal at best.
So on a 94, it has a 16t, correct? And a 15 would fix that problem I take it. Like MelloGS said, necessary to change the chain and rear sprocket?
16 is regarded as the mimum number of teeth required for any chain sprocket of a given pitch, not just motorcycle final drives. Lower than 16 teeth and the chain begins to suffer from whats termed Chordal Action. Its a nasty and unwated side effect of all hig speed chain drives and it cannot be easily engineered out. In simple terms the chain struggles to engage on the teeth smoothly due to the extra and unwanted forces generated when being driven by a small diameter sprocket. The upshot of this is a fluctuation in chain speed (termed snatch) and a dramatic increase in noise, vibration and harshness (termed NV+H) caused by the difficulty the chain has engaging. In effect the rollers slam into position between the teeth rather than being smoothly drawn into them. Increased NVH will reduce the lifespan of the chain and sprockets and will probably impact on other parts of the drivetrain, particularly if the chain is already part worn. My guess would be the splines on the gearbox output shaft would be first to suffer as that is where all the torque and power is concentrated.
Click on this link.
http://chain-guide.com/basics/2-2-1-chordal-action.html
Ignore all the tech-talk and maths and look at the graph at the bottom
It plots tooth number against unwanted speed variation and from it you can see that at about 15-16t the line
shoots up indicating that chordal action is begining to take affect. The question now is will 15t be ok? my answer is yes but you will begin to notice an increase in noise and vibration, the chain may snatch, particularly on the overun or when coasting downhill and you can expect a reduced lifespan of the chain and sprockets as a result. I certainly wouldnt go below 15t and suspect the unwanted effects of Chordal action are the reason that the Suzuki Engineers chose a 16t sprocket as standard.
In terms of reliability I think a better option would be to alter the number of teeth on the rear sprocket to alter the overall ratio. Chordal Action will have no effect on a sprocket of that size and you will not be making any scarifices to the overall reliabilty of the chain and sprockets. The question now is are they available? and I cant answer it, but I can say having one made would not be difficult for a good engineering or specialist gear-cutting company. Take the old one as a sample and ask them to make another of the same pitch and fixing centers and however many or less teeth you want.
There have been a lot of people here who run a 15T Front, and I've never heard of anyone complain of excessive chain or sprocket wear. There have even been a few who installed a 14T, again without any word of increased failure rates.
I don't argue that "Chordal Action" is greater with reduced fron sprocket radius, but anecdotal evidence appears to support that that the effects are not significant at the 15T level.
As for why Suzuki engineers have chosen a 16T front, I suspect it has more to do with providing a balance between spirit and calm for a 40 HP bike that's aimed at the beginner and commuter. :dunno_white:
OEM Gearing:
91-98 CBR600F2/F3 15-43
95-04 ZX6R 15-40
94-04 YZF600R 15-47
88-95 GSX1100F 15-52
89-97 GSX600F 14-46
gsJack is the gonefather of GS500's
redshift?
I doubt anyone would physicaly notice the increase in vibration given the constantly varying and far from ideal conditions the chain operates in, nor the increased wear rate as chains and sprockets are wearing components, But the fact of the matter still stays. A reduction in size increases vibration and vibration has negative effects.
jack?
What can I say? Obviously Chordal action and its effects wasnt a big issue to the designers of the GSX6.
Quote from: chefod on February 08, 2006, 11:23:11 PM
i bought the one from sprocket specialists, and it's the wrong one, you need the one with the shoulder!!!! not from them!!!
Ok, I finally got my 15T sprocket from the dealer. After dealing with their saga (they ordered the wrong one the first time, adn I suspect this time too?). Here is what they gave me, which according to them, fits the 2004 Suzuki GS500F:
The sprocket:
(http://i17.photobucket.com/albums/b68/phaedrusGS/front-sprocket/newinpackage.jpg)
The label:
(http://i17.photobucket.com/albums/b68/phaedrusGS/front-sprocket/label.jpg)
As you can see from the picture, there is no shoulder. I mentioned this to the parts guy at the dealer and he said it did not matter if it was there or not. Since this one does not have the shoulder, I might need to re-use the rubber grommet from the stock one, and this one might be a bit noisier than stock.
So, is he full of :bs: or no? I won't be able to work on this for another week or two prolly, as my bike is stored out of town but I'll be getting it out when I have the time and a day off :)
Is this going to work, or should I take it right back and not even waste my time? (Keep in mind, this is the second one..I have little confidence in their competence).
You may need to use a washer to fill in the space. I have done so with mine, and just last weekend I cleaned out the c/s cavity and inspected the splines and they are fine (16tooth, 15,000 miles).
The dealer obviously cannot distinct between models.
According to Kerry's webpage here:
http://www.bbburma.net/Documents/GS500_Chains&Sprockets.txt
that is the correct 15T Sunstar sprocket for '94-'04 models, which I'm sure will fit the subsequent '05-'06 models as well. Though I can't eyeball anything for you (my GS went on vacation without me!), odds are good you've got the right one now.
FWIW, Sunstar sprockets are probably at least equal to the stock OEM Suzuki sprockets in quality (which is very good); in fact, I think Sunstar actually supplies most or all of the OEM sprockets for Suzuki, and probably all of the other Japanese makers.
Bottom line is, I think you've got a keeper... though scratch might be correct, you MIGHT need to shim it with a large washer. You'll need to check chain alignment after you install the sprocket to be sure, but I don't think that will be necessary. Let us know...
Thanks guys. Like I said, I don't have my bike handy so I can't just run outside and check it out or "give it a shot" yet, and if this wasn't the right one, I would want to go back and get the one that I *should* have before I start tearing things apart.
I'll definitely keep you posted :thumb:
Another reason to keep your old used ones available, so you can check 'em against the new one's you order.
Quote from: Phaedrus on March 09, 2006, 10:56:59 AM
The sprocket:
(http://i17.photobucket.com/albums/b68/phaedrusGS/front-sprocket/newinpackage.jpg)
As you can see from the picture, there is no shoulder. I mentioned this to the parts guy at the dealer and he said it did not matter if it was there or not. Since this one does not have the shoulder, I might need to re-use the rubber grommet from the stock one, and this one might be a bit noisier than stock.
Phaedrus, from this picture, it does have a shoulder. Just a really big shoulder. The older sprockets are much thinner, see the following:
(http://www.usdrews.com/images/gdrew/gstwin/jtf565Sprocket.jpg)
The newer bikes have a shoulder on the sprocket for ??? spacing on the shaft ??? :dunno_white: Anyway, they look more like this:
(http://www.usdrews.com/images/gdrew/gstwin/jtf516Sprocket.jpg)
Notice the thickness. I'm not an expert but did sleep at a Holiday Inn Express last night, so please take this info at face value... :)
Edit: Changed to correct sprocket diagrams.
Good eye!
Hm...yes, good eye :thumb: I understand what you are saying now. The reason I didn't think it had the shoulder is because the Suzuki OEM one they originally ordered me had a "different" shoulder. It was smaller, more like a ridge, around the inner circle. It was about as thick as the ridge of a quarter, and the same diameter of that inner circle. I noticed this one did not have it, so I assumed it was a "shoulderless" one. But it does have it, just slightly different configuration.
I see what you are saying. Thank you! :thumb:
ok i got my 15t from a non dealer shop. it is a sun star by sunex pn#33315 for a 2000 mod. it was 12.00$ it fit just like stock. see ya.
How'd it go, Phae? Work?
I bought the 33315 15t and it worked on mine. 04 GS500.
i bought the 33315 sunstar one too. we'll see how it fits on my '00
I just got the bike home today, had battery issues. I'll prolly give it a shot this weekend.
Quote from: leo on March 28, 2006, 03:53:07 PM
I bought the 33315 15t and it worked on mine. 04 GS500.
where di you order it from??
Quote from: melloGS on March 29, 2006, 11:30:07 PM
Quote from: leo on March 28, 2006, 03:53:07 PM
I bought the 33315 15t and it worked on mine. 04 GS500.
where di you order it from??
You can get it from MAWOnline for ~$20.
Quote from: AlphaFire X5 on March 29, 2006, 11:39:58 PM
Quote from: melloGS on March 29, 2006, 11:30:07 PM
Quote from: leo on March 28, 2006, 03:53:07 PM
I bought the 33315 15t and it worked on mine. 04 GS500.
where di you order it from??
You can get it from MAWOnline for ~$20.
...what's the web address? maw.com? mawonline.com?
http://www.mawonline.com/
Or seller name MAWOnline on eBay.
Quote from: melloGS on March 29, 2006, 11:30:07 PM
Quote from: leo on March 28, 2006, 03:53:07 PM
I bought the 33315 15t and it worked on mine. 04 GS500.
where di you order it from??
I ordered if from the dealer. It's cheap enough where I wasn't concerned to find the best possible deal. I figured I've tried on enough things there and gone online to order it, that I could spend a little money their way.
Ok, I finally got the sprocket on! It was a lot easier than I expected it to me. I am not really mechanically inclined, but I like to tinker. I am sure anyone could do this. I think this is easier than adjusting the chain - if you can do that, you can certainly do this. I installed my new ProGrip grips the same day and even that was more of a pain than this was. :laugh: After I took it for a ride to test it out to make sure I didn't screw anything up too badly, I was very impressed. It is noticable. Still no rocket of course but I could definitely feel the improvement. Trust me and everyone else when they say this is an awesome mod to do :thumb:
Here is my recap.
My bike is a 2004 GS500F.
I used the SUNNEX 33315 15 tooth sprocket. It was $16.32 plus tax from the Suzuki dealer:
(http://i17.photobucket.com/albums/b68/phaedrusGS/front-sprocket/newinpackage.jpg)
(http://i17.photobucket.com/albums/b68/phaedrusGS/front-sprocket/label.jpg)
To replace the 16 tooth stock sprocket with the 15 tooth sprocket, I basically followed the step by step instructions from the Haynes repair manual. I happen to have one for the older 89-97 GS500E model, but it still worked just fine. In summary:
1. Unscrew the pinch bolt on the gear shift lever and remove it. Take note where it is so you can put it on exactly the way you took it off. Remove the 5 bolts that hold the sprocket cover onto the crankcase. I used an 8mm socket for this. Take note that two of the bolts are short, the other 3 are long. Lay them out in order so you know where each one goes back to properly.
(http://i17.photobucket.com/albums/b68/phaedrusGS/front-sprocket/1-unscrew-gearchangelever.jpg)
2. Remove the circlip that holds the sprocket on the shaft. This was probably the hardest part because I couldn't find my needlenose pliers so I had to be creative; I used my finger, a knife, and a screw driver. Tip: Just go get some damn needle nose pliers. Set the circlip aside and don't lose or destroy it so you can reuse it.
(http://i17.photobucket.com/albums/b68/phaedrusGS/front-sprocket/2-remove-circlip.jpg)
3. Slide the sprocket (with chain on it) off the shaft. You might need to loosen the chain to get it off, but I didn't have to.
4. Take the old sprocket off the chain and put the new one in it's place. This is pretty obvious. Put the circlip back on and make sure it is properly seated in it's groove.
(http://i17.photobucket.com/albums/b68/phaedrusGS/front-sprocket/3-install-newsprocket-andcirclip.jpg)
5. Reinstall the sprocket cover, the gear change lever, etc. Basically just install everything back in the reverse order you took it off.
6. I had to re-adjust my chain, I ended up with some extra slack. So be sure to check and adjust your chain. You can find out how to do this by going here (http://gstwins.com/gsboard/index.php?topic=24581.0).
Like I said, this was very much worth doing. While I had the cover off, I did a clean out (http://gstwins.com/gsboard/index.php?topic=20468.0) similar to how RedShift had previously posted directions for. There was a lot of gunky sludge built up in there so I cleaned all that out while I was in there. I even used a little bit of Engine Degreaser to make the inside of the case purrty.
3d
Yeah, all I know is...what I did and used worked for my bike :thumb:
i'd like to ad sprocket specialist does not have the shoulder, just put mine on last week. have an 05. was to eager to send it back and get the one with the shoulder. i just put a spacer behind it works fine
:icon_mrgreen:
So what sort of effect does the new sprocket have? Does it mess with your RPM / gear / speed ratio?
I noticed some changes when I went with a taller rear tire, I'm wondering if the different sized gear has a similar effect.
Quote from: Straymonolith on June 10, 2006, 11:38:24 PM
So what sort of effect does the new sprocket have? Does it mess with your RPM / gear / speed ratio?
I noticed some changes when I went with a taller rear tire, I'm wondering if the different sized gear has a similar effect.
It has the opposite effect from a taller rear tire. You get a little more torque to the rear tire but you will be running higher rpms in all gears. Also, theoretically, more wear on the smaller sprocket.
The OEM sprocket is the best compromise.
If the bike doesn't carry much weight then I wouldn't bother changing. If you carry a passenger and/or other heavy stuff then 15 teeth helps with get up and go but at highway speed you'll be looking for a seventh gear.
:cheers:
So a 15T sprocket combined with a taller tire should even out?
Because I notice that in 6th I have trouble getting the RPM up and usualy have to downshift. The crawl from 90 to 100mph is really slow.
So would it make sense for me to do this mod. Although, I really dont carry much weight, and I only weigh 140lbs.