U
unisk8r
Guest
My 2nd guni model (finally complete except for paint and brake caliper)
is a slight refinement of Purple Phaze. Improvements are a modified
frame, allowing a narrower jackshaft and jackshaft housing. This
leaves room for an 80mm hub flange width, plenty for the 36". Phaze
Too has better changeability of gear ratios, as it uses standard bike
58BCD granny rings. Ratios are: 20t = 1.00, 22t = 1.22, 24t = 1.44,
26t = 1.67, and 28t = 1.96. Although this is still a fixed gear
machine, the chainrings permit up to 5 choices of gear ratios on one
jackshaft. Gearing is changed by switching out the chainrings on the
right crank and inboard jackshaft.
The hub is a custom Tommi Miller, 135mm bearing width, 100mm flange
diameter, 80mm flange width, and 35mm hub bearings. The hub is
drilled on both sides for ISO disc brake pattern (6 x 44BCD), so it
uses a disc brake on the left side. More reports when I add the brake
caliper.
[image: http://img292.imageshack.us/img292/5892/phazetooside9ph.jpg]
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unisk8r
------------------------------------------------------------------------
unisk8r's Profile: http://www.unicyclist.com/profile/4660
View this thread: http://www.unicyclist.com/thread/44900
is a slight refinement of Purple Phaze. Improvements are a modified
frame, allowing a narrower jackshaft and jackshaft housing. This
leaves room for an 80mm hub flange width, plenty for the 36". Phaze
Too has better changeability of gear ratios, as it uses standard bike
58BCD granny rings. Ratios are: 20t = 1.00, 22t = 1.22, 24t = 1.44,
26t = 1.67, and 28t = 1.96. Although this is still a fixed gear
machine, the chainrings permit up to 5 choices of gear ratios on one
jackshaft. Gearing is changed by switching out the chainrings on the
right crank and inboard jackshaft.
The hub is a custom Tommi Miller, 135mm bearing width, 100mm flange
diameter, 80mm flange width, and 35mm hub bearings. The hub is
drilled on both sides for ISO disc brake pattern (6 x 44BCD), so it
uses a disc brake on the left side. More reports when I add the brake
caliper.
[image: http://img292.imageshack.us/img292/5892/phazetooside9ph.jpg]
--
unisk8r
------------------------------------------------------------------------
unisk8r's Profile: http://www.unicyclist.com/profile/4660
View this thread: http://www.unicyclist.com/thread/44900