Can anyone link me to a place to buy the 14t sprocket? Ive seached but i cant seem to come up with a part number. I already have the chain but not the sprocket.
Link me to a buy it now kind of situation would be great!
Brad
http://www.sprocketspecialists.com/ProductDetails.aspx?productID=15333 :thumb:
Dennis Kirk has one:
http://www.denniskirk.com/jsp/product_catalog/Product.jsp;jsessionid=JPSSQQ2YEPNQNLA0WTKSM4VMDK0NCIV0?store=&skuId=8098514
JT sprocket site:
http://www.jtsprockets.com/
In my (5-year-old) experience, Sprocket Specialists only sells one sprocket model to cover ALL years. I put one on my '99 shortly before a 3,000-mile trip, and had to listen to scary-sounding "clacking" a few times a day. Later on, I figured out that their shoulder-less design should work fine on '89-'93 models, but that '94-'00 (and possibly beyond) came with a "shoulder" cast into the sprocket. (See [THIS RECENT POST (http://gstwins.com/gsboard/index.php?topic=39272.msg444716#msg444716)].) If the SS sprockets are just too cheap to pass up, you could probably add a washer or two in lieu of the shoulder.
My [Chains & Sprockets (http://www.bbburma.net/Documents/GS500_Chains&Sprockets.txt)] page is a couple years old, but most of the part numbers are probably still good. Gotta update that page one of these days.... :icon_confused:
Also Chaparral:
http://www.chaparral-racing.com/Chaparral/product_family.asp?family%5Fid=16780&gift=False&mscssid=007D8E34F9BAA47D89EA8F8345DD9B62
The JT516 sprockets have the hub.
Thanks Kerry. Ill go with the JT sproket from Kirk. It says it fits 94-00 so it should have the sholder right kerry?
Dont need a klickity clack sound, thats scary
Kirk Kills Chaperall with shipping. for total price wise.
Yep, it should have the shoulder/hub/spacer built-in. :thumb:
Bought and done!
Thanks all!
Quote from: Kerry on February 03, 2008, 06:28:05 PM
In my (5-year-old) experience, Sprocket Specialists only sells one sprocket model to cover ALL years. I put one on my '99 shortly before a 3,000-mile trip, and had to listen to scary-sounding "clacking" a few times a day. Later on, I figured out that their shoulder-less design should work fine on '89-'93 models, but that '94-'00 (and possibly beyond) came with a "shoulder" cast into the sprocket. (See [THIS RECENT POST (http://gstwins.com/gsboard/index.php?topic=39272.msg444716#msg444716)].) If the SS sprockets are just too cheap to pass up, you could probably add a washer or two in lieu of the shoulder.
My [Chains & Sprockets (http://www.bbburma.net/Documents/GS500_Chains&Sprockets.txt)] page is a couple years old, but most of the part numbers are probably still good. Gotta update that page one of these days.... :icon_confused:
The front sprocket for the GS with the hub is the JT516. Your links show a JT512?
I used those Sprocket Specialists sprockets without hub on both my 97 and 02 GSs for tens of thousands of miles without the clicky clack. But Chaparral has the JT now so I'll just get the right one with hub with my next chain. Hope it doesn't spoil my bike, it's not used to the best of everything. :laugh:
Quote from: gsJack link=topic=39634.msg445198#msg445198 ate=1202090188The front sprocket for the GS with the hub is the JT516. Your links show a JT512?
Cool - from the drawings on the JT website, the hub on the 516 series appears to have a diameter closer to the stock sprocket. I can't remember how I stumbled on the 512 series years ago - probably either a cross reference from a non-JT catalog, or a GStwin post, or a "lucky" guess.
When I update the page I'll be sure to shill the 516 series of sprockets instead of the 512 series. ;)
darb85, no reason to panic if you ordered the 512 series. It will be slightly heavier, but it will work fine. :thumb:
I got the one that Kirk had. Says it will work and complete refund if it doesnt. Hevier aint nessesarily a bad thing.
108 chain is what i need right?
or is it a 110. damn it now i have to find the thing.... pretty sure its the right piece. went down two links from stock... so what ever that is
The stock chain has 110 links. You dropped 2 teeth on your front sprocket, but that doesn't translate directly to a 108-link chain, because it reduced the sprocket circumference by 2 tooth widths, not the diameter. The change in diameter would be more closely related to the amount that the rear wheel has to move back to restore normal tension for the chain. If I'm doing my math right, that amount would be around 1.3 links worth.
If you're getting a brand-new chain, I would probably get a regular 110-link unit. Maybe, as the chain "stretches" (wears down) and the rear axle gets close to the end of its adjustability, you could remove 2 links?
Even better, wait for someone who has actually mounted a 14-tooth chain to weigh in.... :icon_rolleyes:
What was changed from '93 to '94 models in regards to requiring a different front sproket?
Jenya
I had a 14t on my GS and the 110 link worked like a charm.
Quote from: Jenya on February 04, 2008, 01:35:46 AM
What was changed from '93 to '94 models in regards to requiring a different front sproket?
Thanks for asking; it made me look more closely through the [
Parts Fiches (http://www.bbburma.net/Documents/GS500_Parts_Fiche_1.html)]. :thumb:
The only thing I can see (under the TRANSMISSION category) is that spacer #37 got shorter. It apparently went from 35.6mm in length to 32.7mm ... a reduction of almost 3mm. That would have moved the sprocket closer to the engine, and introduced a small misalignment with the rear sprocket. I never measured the shoulder/hub/spacer on my stock '99 sprocket, but I wouldn't be surprised if it's about 3mm wide. ;)
I think the change was made to add the hub because they wanted more engagement between the sprocket and shaft spline.
The JTF516 sprocket with hub is 8.8 mm wide and the 520 chain is 1/4" wide between plates so the tooth part of the sprocket or a sprocket w/o hub would be about 6 mm wide allowing for chain clearance. That's about 2.8 mm approx the same as the spacer difference.
If a sprocket w/o hub is run on the 94 and later GSs, there is no misalignment between sprockets if there is no wheel misalignment. The front sprocket is located by the rear thru the running chain and rides right up against the snap ring leaving the extra clearance behind it. Honest, it was right there everytime I looked. There is just less sprocket/spline engagement.
Got a whole pile of those sprockets over in the garage, I'll bring one of each back when I put the bike away later. (if I remember)
Measured a OEM Suzuki 16T front sprocket with hub:
.346" (8.8mm) o/a wide - .232" (5.9mm) tooth width = .114" (2.9mm) hub width which is exactly equal to the spacer #37 length change. Splined driveshaft has same part # from 89 thru 02.
Sprocket Specialists 504 16T sprocket measured same .232" wide and is of significantly lower quality than the OEM sprocket.
Both sprockets weighed same 210 grams on wife's Weight Watchers scale which is marked in 10 gram increments.
Thanks gsJack - it's always nice to have empirical data! :thumb:
One more thing and I'm outta here, we've milked all we can out of this one. :laugh:
Using my trusty Tsubaki Chain Length Calculator I've determined the ideal center distance for 16/39T and 110 chain links to be 25.679" and for 14/39T and 110 links to be 25.975". Axle would only move back .296" so a 110 link chain should work nicely with the 14 T front sprocket.
On the other hand, for 14/39T and 108 links the center distance would be 25.347" so the axle would move forward .332". Considering the amount of slot in the swingarm ahead of the axle with a new std chain and sprockets, it looks to me like the 108 link chain would also work.
http://tsubaki.com.au/tsscs/chain_length.htm
very good! Its a 108. Dont know why i got that instead of a 110. eh, as long as it will work
cool thanks all!!
Any reason why one may want to conver a pre-94 GS to use the hubbed sproket or is it plenty good to stick with the stock type?
Jenya
Now that you mention it, I wonder if too many pre-'93 bikes exhibited "stripped" splines on the countershaft? Adding the hub would spread the torque out a bit, and exert less force on a given spot on the countershaft.
Anyone?
I assume that if converting, all that needs to be changed is the spacer. right?
Jenya
That's a "Roger" ... I don't think any of the other parts have changed over the years.
HOWEVER ... according to [
THIS OLD POST (http://gstwins.com/gsboard/index.php?topic=12488.msg105320#msg105320)] by
Bob Broussard:
Quote from: Bob Broussard on September 27, 2004, 11:19:34 PM
Unfortunately the spacer is pressed on the shaft, so you can't just replace it. It requires a complete disassembly to replace the shaft.
Luckily, he also says:
Quote from: Bob Broussard on September 27, 2004, 11:19:34 PMBUT, I wouldn't worry about it for a long time. You should be able to get many more miles before the splines go.
Also, true to form, Bob was willing to go out of his way for another GS'er. (I couldn't say whether he is still able to supply parts like this.)
Quote from: Bob Broussard on September 27, 2004, 11:19:34 PMIf you do decide to replace it, let me know. I have lots of transmissions.
I'll send a complete shaft ready to drop in. :thumb:
aye. jack and kerry. a combo which cannot be beaten O0