rockmeupto125 Posted June 2, 2021 Share Posted June 2, 2021 Hey all, I'm in need of a special sprocket. It's got a bolt circle of 3.5 inches by quick guesstimation with a tape measure, 5 bolts. There used to be catalogs online that one could search, not any more, apparently, or google searches need to throw you to advertisers negates the actual search. Anybody got any ideas? I need a 530 pitch, 45 tooth sprocket with a bolt circle of 3.5 inches and 5 bolts. Inner bore probably 2.5 inches or so. I just wouldn't expect it to be a proprietary sprocket when there are plenty of off the shelf designs available. Thanks! Quote Link to comment Share on other sites More sharing options...
jon haney Posted June 2, 2021 Share Posted June 2, 2021 AFAM has this, https://www.afam.com/en/service-2/sprocket-finder/ but I couldn't find anything close to the numbers you gave. Quote Link to comment Share on other sites More sharing options...
IcePrick Posted June 2, 2021 Share Posted June 2, 2021 JT gives the dimensions of their sprockets in their online catalog, but it can only be searched by application so that makes it *a little* time-consuming. Can you share the application? Or is it too obscure for a search? Quote Link to comment Share on other sites More sharing options...
RXX Posted June 2, 2021 Share Posted June 2, 2021 29 minutes ago, IcePrick said: JT gives the dimensions of their sprockets in their online catalog, but it can only be searched by application so that makes it *a little* time-consuming. Can you share the application? Or is it too obscure for a search? It may be for a personal thingy he would just as soon us not know about. And with those specs, I’d just as soon not know. Quote Link to comment Share on other sites More sharing options...
SwampNut Posted June 2, 2021 Share Posted June 2, 2021 27 minutes ago, RXX said: It may be for a personal thingy he would just as soon us not know about. Sex swings use pulleys, not sprockets. Quote Link to comment Share on other sites More sharing options...
RXX Posted June 2, 2021 Share Posted June 2, 2021 1 hour ago, SwampNut said: Sex swings use pulleys, not sprockets. Ropes use pulleys, chains use sprockets. Quote Link to comment Share on other sites More sharing options...
rockmeupto125 Posted June 2, 2021 Author Share Posted June 2, 2021 It's a lightweight wheel I thought I was getting a good deal on. Came with an aluminum sprocket and I thought I'd change it out with no real problem. The Caro's for instance take a Kawi sprocket as I recall. This is a TWM wheel, looks very similar to the stock one. Here's a representative. https://www.ebay.com/itm/HONDA-CBR1100XX-TWM-Rear-Wheel-yyy-/264667888588?_ul=IL Quote Link to comment Share on other sites More sharing options...
SwampNut Posted June 2, 2021 Share Posted June 2, 2021 1 hour ago, RXX said: Ropes use pulleys, chains use sprockets. Isn't your sex swing made of ropes? Quote Link to comment Share on other sites More sharing options...
IcePrick Posted June 2, 2021 Share Posted June 2, 2021 56 minutes ago, rockmeupto125 said: It's a lightweight wheel I thought I was getting a good deal on. Came with an aluminum sprocket and I thought I'd change it out with no real problem. The Caro's for instance take a Kawi sprocket as I recall. This is a TWM wheel, looks very similar to the stock one. Here's a representative. https://www.ebay.com/itm/HONDA-CBR1100XX-TWM-Rear-Wheel-yyy-/264667888588?_ul=IL Ah. Looks like a Ducati-ish adaptor. That's going to be a fun journey. Quote Link to comment Share on other sites More sharing options...
Zero Knievel Posted June 3, 2021 Share Posted June 3, 2021 Fourth Dimension sprockets are only a shadow of what you need. Fifth Dimension sprockets are highly rated, but good luck keeping them in the moment. Quote Link to comment Share on other sites More sharing options...
IcePrick Posted June 3, 2021 Share Posted June 3, 2021 A friend tells me that several of the aftermarket wheel companies use the same sprocket - Marchesini Type A. Check out Supersprox rst-7090-45 or Sunstar RM-102. The dimensions seem off for what you measured but I don’t know how accurate you got - 76mm center and 100mm bolt circle. Quote Link to comment Share on other sites More sharing options...
SwampNut Posted June 3, 2021 Share Posted June 3, 2021 Also, the center could be larger and still work right? Isn't all the load on the bolts anyway? And it would not be expensive to have one with a smaller hole machined out. I had some wheels with too-small center holes cut at a machine shop for under $20 per. Ooooh... https://duckduckgo.com/?q=blank+sprocket&atb=v270-1&ia=web Quote Link to comment Share on other sites More sharing options...
IcePrick Posted June 3, 2021 Share Posted June 3, 2021 37 minutes ago, SwampNut said: Also, the center could be larger and still work right? Isn't all the load on the bolts anyway? And it would not be expensive to have one with a smaller hole machined out. I had some wheels with too-small center holes cut at a machine shop for under $20 per. Ooooh... https://duckduckgo.com/?q=blank+sprocket&atb=v270-1&ia=web There are custom-machined options as well, probably stupid expensive though. One thing I've noticed is that most of the super light aftermarket wheels use 520 chains to stay with the weight loss regimen. Quote Link to comment Share on other sites More sharing options...
tomek Posted June 3, 2021 Share Posted June 3, 2021 Sprocket Specialist. https://sprocketspecialists.com/custom-builds/ Quote Link to comment Share on other sites More sharing options...
rockmeupto125 Posted June 3, 2021 Author Share Posted June 3, 2021 I've a strong feeling its the Marchesini pattern. I've forgotten enough trigonometry to figure it out. Quote Link to comment Share on other sites More sharing options...
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