A
andyinchville1
Guest
HI All,
As you all may know I have been making sprockets for mounting in place of the disc on a disc brake hub....However, placing the sprocket further out (where the disc mounts) has caused some issues for some users (the chain or sprocket would interfere with the rear stays of the bike frame itself).
A simple solution for most users has been to simply redish or space out the rear wheel....While this has proven to work for some users for some it is still not enough for others (primarily depends on the frame and wheel in question)....Plus extreme dishing can weaken the wheel and spacing sometimes has its own problems (in extreme cases some of the rear cog gears cannot be used)...
With this in mind, I am designing a "Hub Adapter" to which a 9 hole sprocket is attached (the sprocket with the enlarged center hole (to clear the disc hub) is bolted onto the adapter and the adapter is then bolted onto the disc portion of the disc brake hub....This will place the sprocket, at or very close to where the sprocket would have been had it been mounted using the standard mounting hardware (of course using the hub adapter and sprocket on this disc mount will ensure a more precise alignment and be free from lateral run out or "wobble"...
While there has been a another design of adapter that somebody had made....My design hopes to not only mount the sprocket precisely but ALSO enable one to retain use of the original disc brake if one choses to....
Which brings me to my question for you disc brake gurus out there (my bikes are not equipped with a disc brake so I can't check here at the shop)....
1) The adapter will push the disc of the disc brake out 1/8".....would this be a
problem or is there some adjustment that can be made (much like a
rim brake)?
2) What is the diameter of a disc brake disc?
3) What is the thickness of the disc brake disc?
4) How far in towards the spokes does the disc brake caliper (the part that
grips the disc to slow you down) extend ?
Thanks in advance for any help on this....I will post pipcs of the prototype soon!
Andrew
As you all may know I have been making sprockets for mounting in place of the disc on a disc brake hub....However, placing the sprocket further out (where the disc mounts) has caused some issues for some users (the chain or sprocket would interfere with the rear stays of the bike frame itself).
A simple solution for most users has been to simply redish or space out the rear wheel....While this has proven to work for some users for some it is still not enough for others (primarily depends on the frame and wheel in question)....Plus extreme dishing can weaken the wheel and spacing sometimes has its own problems (in extreme cases some of the rear cog gears cannot be used)...
With this in mind, I am designing a "Hub Adapter" to which a 9 hole sprocket is attached (the sprocket with the enlarged center hole (to clear the disc hub) is bolted onto the adapter and the adapter is then bolted onto the disc portion of the disc brake hub....This will place the sprocket, at or very close to where the sprocket would have been had it been mounted using the standard mounting hardware (of course using the hub adapter and sprocket on this disc mount will ensure a more precise alignment and be free from lateral run out or "wobble"...
While there has been a another design of adapter that somebody had made....My design hopes to not only mount the sprocket precisely but ALSO enable one to retain use of the original disc brake if one choses to....
Which brings me to my question for you disc brake gurus out there (my bikes are not equipped with a disc brake so I can't check here at the shop)....
1) The adapter will push the disc of the disc brake out 1/8".....would this be a
problem or is there some adjustment that can be made (much like a
rim brake)?
2) What is the diameter of a disc brake disc?
3) What is the thickness of the disc brake disc?
4) How far in towards the spokes does the disc brake caliper (the part that
grips the disc to slow you down) extend ?
Thanks in advance for any help on this....I will post pipcs of the prototype soon!
Andrew