HI all,
As some of you may know I have been making custom sprockets for our bikes and have always sought better ways of doing things.
Since we all know about the factory 9 hole mounting system and its short comings (mainly not being able to mount the sprocket perfectly....(i.e. not having lateral run out / wobble or up and down wobble)....I began placing
the 6 Hole ISO standard disc mounting pattern on my sprockets....With this one can securely and accurately (not to mention quickly) mount a sprocket in place of the disc on a disc brake hub.
While this mounting method works for MOST all people it can POTENTIALLY cause minor chain line issues and/or interference of the sprocket with the rear frame stays on SOME frame on and wheel combinations..
The quick and easy solution for this would be to simply re-dish and/or re-space the rear wheel.....This solves the problem for most all users although this is not necessarily the best solution because re-dishing weakens the wheel to an extent and re-spacing can make cornering feel "funny" since the rear wheel would be more out of line than the front wheel.
With this, I began develop a disc mount sprocket adapter that will precisely hold a standard 9 hole sprocket (on a stock sprocket the center hole would have to be enlarged to clear the disc hub mounting area but when we sell sprockets for use with the adapter it will have the proper sized in approximately the same position as the factory 9 hole mount thus eliminating
potential chain line issues and / or possible sprocket interference with the rear frame stays.....
The hub adapters are made of the same aerospace grade 7075 T651 aluminum that we make our sprockets from. In prototype form, with the factory nuts and bolts, it weighs in at 8.8 ounces VS the stock 9 Hole mount at 13.3 ounces....I may include shorter mounting hardware as well since the factory pieces are way too long....That will make for a neater and cleaner install not to mention saving probably another ounce or two of unnecessary weight.
The photos are of the preliminary adapter....Version #2 of my adapter will (hopefully....space is tight) allow full use of the rear disc brake as well.
Version #1 will be available for sale in approximately a week or so....Estimated price will be $24.50 Plus shipping
Version #2 will be available in 2 weeks or so....Estimated price will be $27.50 Plus shipping.
Questions, comments, or concerns are welcome because it would help us make a better product from the get go.
Thanks for taking time to read about our new product and for your past, present and future business!
Andrew
As some of you may know I have been making custom sprockets for our bikes and have always sought better ways of doing things.
Since we all know about the factory 9 hole mounting system and its short comings (mainly not being able to mount the sprocket perfectly....(i.e. not having lateral run out / wobble or up and down wobble)....I began placing
the 6 Hole ISO standard disc mounting pattern on my sprockets....With this one can securely and accurately (not to mention quickly) mount a sprocket in place of the disc on a disc brake hub.
While this mounting method works for MOST all people it can POTENTIALLY cause minor chain line issues and/or interference of the sprocket with the rear frame stays on SOME frame on and wheel combinations..
The quick and easy solution for this would be to simply re-dish and/or re-space the rear wheel.....This solves the problem for most all users although this is not necessarily the best solution because re-dishing weakens the wheel to an extent and re-spacing can make cornering feel "funny" since the rear wheel would be more out of line than the front wheel.
With this, I began develop a disc mount sprocket adapter that will precisely hold a standard 9 hole sprocket (on a stock sprocket the center hole would have to be enlarged to clear the disc hub mounting area but when we sell sprockets for use with the adapter it will have the proper sized in approximately the same position as the factory 9 hole mount thus eliminating
potential chain line issues and / or possible sprocket interference with the rear frame stays.....
The hub adapters are made of the same aerospace grade 7075 T651 aluminum that we make our sprockets from. In prototype form, with the factory nuts and bolts, it weighs in at 8.8 ounces VS the stock 9 Hole mount at 13.3 ounces....I may include shorter mounting hardware as well since the factory pieces are way too long....That will make for a neater and cleaner install not to mention saving probably another ounce or two of unnecessary weight.
The photos are of the preliminary adapter....Version #2 of my adapter will (hopefully....space is tight) allow full use of the rear disc brake as well.
Version #1 will be available for sale in approximately a week or so....Estimated price will be $24.50 Plus shipping
Version #2 will be available in 2 weeks or so....Estimated price will be $27.50 Plus shipping.
Questions, comments, or concerns are welcome because it would help us make a better product from the get go.
Thanks for taking time to read about our new product and for your past, present and future business!
Andrew
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