12oclocker Posted January 13, 2009 Report Share Posted January 13, 2009 anyone know who makes custom ATV sprockets for a reasonable price?Sidewinder will make me a custom front, but I have a feeling its going to be a kings ransom for it.I need a 12 tooth front for a LTR450R Suzuki Quadracer, cant find them anywhere. If I cant find anyone, I'll have to bite it and just order from sidewinder. Quote Link to comment Share on other sites More sharing options...
Dweezel Posted January 13, 2009 Report Share Posted January 13, 2009 Tool Steel+CAD time+CNC laser/plasma/water jet = Not cheap Sorry dude Quote Link to comment Share on other sites More sharing options...
12oclocker Posted January 13, 2009 Author Report Share Posted January 13, 2009 bummer, lol Quote Link to comment Share on other sites More sharing options...
ReconRat Posted January 13, 2009 Report Share Posted January 13, 2009 http://cgi.ebay.com/ebaymotors/SUZUKI-LTR450,LTR-450-FRONT-12T-SPROCKET-GEAR-06-08_W0QQitemZ400020948281QQcmdZViewItemQQimsxZ20081231?IMSfp=TL0812311510013r9725http://cgi.ebay.com/ebaymotors/SUZUKI-LTR450-LTR-450-FRONT-12T-SPROCKET-GEAR-06-08_W0QQcmdZViewItemQQ_trkparmsZ72Q3a1205Q7c66Q3a2Q7c65Q3a12Q7c39Q3a1Q7c240Q3a1318Q7c301Q3a1Q7c293Q3a1Q7c294Q3a50QQ_trksidZp3286Q2ec0Q2em14QQhashZitem400020948281QQitemZ400020948281QQptZMotorsQ5fATVQ5fPartsQ5fAccessorieshttp://cgi.ebay.com/ebaymotors/SUZUKI-LTR450-LTR-450-FRONT-12T-SPROCKET-GEAR-06-08_W0QQcmdZViewItemQQ_trkparmsZ72Q3a1205Q7c66Q3a2Q7c65Q3a12Q7c39Q3a1Q7c240Q3a1318Q7c301Q3a1Q7c293Q3a1Q7c294Q3a50QQ_trksidZp3286Q2ec0Q2em14QQhashZitem140291906823QQitemZ140291906823QQptZMotorsQ5fATVQ5fPartsQ5fAccessorieshttp://www.jetsrus.com/a_jet_kit_atv/suzuki_450_LTR450R.htmRenthal 12 tooth LTR450: old stock, they don't make them anymore. Don't know the Sprocket Specialist brand. Quote Link to comment Share on other sites More sharing options...
12oclocker Posted January 13, 2009 Author Report Share Posted January 13, 2009 ReconRat, you are a GOD!!!THANKS BUDDY!!! I've been searching online forever! I even searched ebay, but that auction never came up, weird!!!anyway THANKS!!!! Quote Link to comment Share on other sites More sharing options...
ReconRat Posted January 13, 2009 Report Share Posted January 13, 2009 yw, yeah, I got some sort of odd ability to do internet searching... btw, I'd buy two, one of each brand or something, or two from that one guy, save on shipping. You never know, might not ever see them again. Quote Link to comment Share on other sites More sharing options...
12oclocker Posted January 13, 2009 Author Report Share Posted January 13, 2009 Hey I got one more question!If I go -2 in the front, and +2 in the rear, will the stock chain still work?? I'm thinking it will. Quote Link to comment Share on other sites More sharing options...
ReconRat Posted January 13, 2009 Report Share Posted January 13, 2009 Yes, but... the distance between the two sprockets will not stay the same. It won't move much, the stock chain should still work. I'd have to do the math to know for sure how much. It's because the changes in sprocket diameters isn't really the same. In other words, going down two on the front is a bigger change than going up two in the rear, making the rear axle move to the rear. I got an Excel spreadsheet somewhere that I wrote, that calculates that change of distance for me. No it wasn't easy.Fun with on line sprocket and chain calculators:http://www.compgoparts.com/TechnicalResources/SprocketCalculator.asphttp://www.gearingcommander.com/http://www.sprocketspecialists.com/SprocketOptimizer2.aspx Quote Link to comment Share on other sites More sharing options...
kawi kid Posted January 13, 2009 Report Share Posted January 13, 2009 wow i didnt know they made such calculators like that Quote Link to comment Share on other sites More sharing options...
12oclocker Posted January 13, 2009 Author Report Share Posted January 13, 2009 Yes, but... the distance between the two sprockets will not stay the same. It won't move much, the stock chain should still work. I'd have to do the math to know for sure how much. It's because the changes in sprocket diameters isn't really the same. In other words, going down two on the front is a bigger change than going up two in the rear, making the rear axle move to the rear. I got an Excel spreadsheet somewhere that I wrote, that calculates that change of distance for me. No it wasn't easy.Fun with on line sprocket and chain calculators:http://www.compgoparts.com/TechnicalResources/SprocketCalculator.asphttp://www.gearingcommander.com/http://www.sprocketspecialists.com/SprocketOptimizer2.aspxthanks!!!, I figured the sprocket sizes would come into play and it wouldn't be exactly the same, that Sprocket and Chain Optimizer is cool, ive been calcing all that long hand, takes forever, lol...This is what I figured out...06 Suzuki LTR450R tire size 17"77/27 2.851 Primary Reduction (crank)27/13 2.076 1st gear 2500rpm (stock:15.216 8.31mph) (stunt:18.738 6.750mph)28/17 1.64728/21 1.33323/21 1.09521/23 0.913 5th gear (stock final ratio:6.692)36/14 2.571 Final Reduction (sprockets stock)38/12 3.166 Final Reduction (stunt) [my optimal setup]99-02 trx400ex tire size 19"23/65 2.826 primary (crank)12/35 2.916 1st gear 2500rpm (stock: 20.873 6.77mph) [my optimal setup]16/31 1.93719/28 1.47322/26 1.18126/26 1.0 5th gear (stock final ratio: 7.158)15/38 2.533 secondary (sprockets)Final Gear Ratio = Primary Reduction Ratio * Current Gear Ratio [ex 1st gear] * Final Reduction Ratio Mph = (rpm x tire diameter (in inches)) / (Gear ratio x 336) Quote Link to comment Share on other sites More sharing options...
phugitive Posted January 13, 2009 Report Share Posted January 13, 2009 Is that a 520 chain? I read somewhere that with a 520 chain you shouldn't go under 15 because of the tight radius, that might be why you can't find one. The same thing probably goes for other size chains as well, after all there has to be a minimum size. You may want to research that. I bought a sprocket specialist front sprocket and it wasn't as thick as my original, I figured well they know what they are doing, and I used it. It lasted about 500 miles and I was pulling a wheelie and my transmission shaft stripped spinning inside the gear. I had to pull the engine and change the transmission shaft then I put on an oem sprocket. Also the first sprocket I bought from them, they had it listed for the bike, was to big and the chain rubbed the case so I couldn't use it. Don't get me wrong I am not knocking sprocket specialist, they will provide whatever size you want and then some, its up to you to know what size you want and if it will work. Good Luck Quote Link to comment Share on other sites More sharing options...
12oclocker Posted January 13, 2009 Author Report Share Posted January 13, 2009 huh, the sprocket specialist calculator works good, except the MPH looks wrong, its always high, when I manually calc it, it comes up lower.still a good tool though, very handy! Quote Link to comment Share on other sites More sharing options...
12oclocker Posted January 13, 2009 Author Report Share Posted January 13, 2009 Is that a 520 chain? I read somewhere that with a 520 chain you shouldn't go under 15 because of the tight radius, that might be why you can't find one. The same thing probably goes for other size chains as well, after all there has to be a minimum size. You may want to research that. I bought a sprocket specialist front sprocket and it wasn't as thick as my original, I figured well they know what they are doing, and I used it. It lasted about 500 miles and I was pulling a wheelie and my transmission shaft stripped spinning inside the gear. I had to pull the engine and change the transmission shaft then I put on an oem sprocket. Also the first sprocket I bought from them, they had it listed for the bike, was to big and the chain rubbed the case so I couldn't use it. Don't get me wrong I am not knocking sprocket specialist, they will provide whatever size you want and then some, its up to you to know what size you want and if it will work. Good LuckHonda and Suzuki design bikes using 14 and 13 with 520 chains, my oem front is a 14 on the quad, I dropped my CRF250X to a 12t in the front, and its a 520 also, its working good, its a sunstar sprocket.thats crazy your transmission shaft stripped, what kind of bike was that. Quote Link to comment Share on other sites More sharing options...
phugitive Posted January 13, 2009 Report Share Posted January 13, 2009 (edited) Its a 87 yamaha xt350 garage built motard.Yes and some 520 oem are 11 tooth with a 10 tooth available that in itself doesn't invalidate the article.Anyways just food for thought. Edited January 13, 2009 by phugitive Quote Link to comment Share on other sites More sharing options...
phugitive Posted January 13, 2009 Report Share Posted January 13, 2009 Sprocket Specialists #638 should fit. Call them before ordering or cross reference yourself as this is what I did at partforyamaha.com Quote Link to comment Share on other sites More sharing options...
12oclocker Posted January 13, 2009 Author Report Share Posted January 13, 2009 I bought one on ebay already Quote Link to comment Share on other sites More sharing options...
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