Here is the information I got back from Harlan today:
25T - $50
28T - $40
30T - $80
98T - $100
132T - $90
200T - $60
220T - $90
I also looked into getting the front sprocket as a Gates off-the-shelf product since it might just be easier to use a plain bore- I'm not sure if Zero uses some proprietary mojo for shaft mounting. A 28t sprocket from Gates is $57, part number PB8MX-28S-12.
The two main problems I need to solve are tensioning and length. Tensioning- job 1, design, build, and install a tensioner, OK. Length- I only have two stock Zero lengths to choose from. With the 28/98 combo, I would get 21.29" center distance from the 200t, and 24.48" from the 220t belt. However, Gates also sells a standard length 224t belt (~25.12" CD, part number 8MGT-1792-12, $43 from Royal Supply), although in 12mm width. I'm not worried about dropping 2mm of width since I'm not making Zero levels of power. Don't forget tensioner deflection.
Last edited by nedfunnell; 14 July 2015 at 1838.
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