Bike Spec:

Genesis GS29
Model #GS32936
Hardtail 29er "mountain bike" with suspension fork

aluminum/not steel/not magnetic: frame, rims, pedal exterior cage, crank chain guard
steel/magnetic: seat post, spokes, nipples, fork, stem, handlebars, crank arms, front chain rings, pedal spindle
unsure: head tube (magnet attracted but only weakly, probably steel stem/fork inside aluminum head tube)

top pull FD
no RD hanger; just sits on the axle, alongside the frame, clamped by the axle nut, with a fixing screw into the frame to keep it from twisting

brake mounts: for V-brakes

BB/crank spindle = traditional square taper, cup and cone with caged bearings

headset type = traditional threadless with press-in external cups (not zero stack, not integrated)
headset bearings 22 balls, 3.93mm = 5/32 inch, caged
head tube diam = 42.164mm = 1 21/32 in = 1.66 in
steerer tube = 1 1/8 inch

seat tube diam = 32.1mm
handle bar diam = 22.05mm (apparently 25.4mm is some kind of standard?)
top tube diam = 38.3mm
seat post diam = 27.1mm

bottom bracket lock ring (NDS, "adjustable cup" side) outer diam = 45mm
bottom bracket adjustable cup (NDS) at threads = 34.6mm (measured)
bottom bracket fixed cup (DS) wrench flat span = 1-13/32in = 35.81mm
bottom bracket shell width bike-left-to-bike-right = 68mm (bare frame only; 74mm if including the cups)
bottom bracket shell outer diameter = 43mm (measured)
bottom bracket shell inner diameter at threads = 33.7mm (measured)
- so presumed BB standardized size spec is 68 x 34
bottom bracket bearings, each side = 9 balls, 1/4in, caged

bb height (from bb center to ground) = 13 1/4 in
bb drop, vertically down from line connecting front and reat axles = 1 1/4 in
chain stay length, bb center to rear axle = 18 1/2 in
seat stay length, seat tube center to rear axle = 19 1/2 in
wheelbase, front axle to rear axle = 44 1/2 in
axle height above ground = 14 1/2 in

frame reach = 40 5/8 in - 24 9/16 in = 40 10/16 - 24 9/16 = 16 1/16 in
frame stack = 36 3/4 in - 13 1/4 in = 23 1/2 in
standover height above the crank = 31 in
top tube length, along angle of tube, seat tube center to head tube center = 23 in
top tube length, along flat top only = 21 1/4 in
down tube length, bb center to head tube center = 27 5/8 in
down tube length, along flat side only = 26 1/4 in
seat tube length, BB center to seat tube top edge = 19in
seat tube length, BB center to seat tube-top tube intersection center = 17in
seat tube angle = 75 degrees (74.74 degrees)
head tube length = 4 3/4 in (between cups, not including cups)
head tube angle = 71 degrees (70.79 degrees)
head tube height above ground, from below top cup to ground = 36 1/2 in
steerer height above ground, from top of top CAP to ground = 39 in
stem length, top cap center to handlebar center = 3 13/16 in
stem length, overall end to end = 5 9/16 in

fork length, from bottom of lower stem cup to end of fork arm = 19 5/8 in
front axle offset/rake = 2 1/4 in (rough estimate)
front wheel trail = 3 1/2 in (rough estimate)

rear v-brake arm length: 122mm end to end, 102mm axis to axis
axle nuts (front and rear): 15mm
rear brake cable length: 51in = 1,295mm
tires = 29 x 2.10 (marked ISO 622-54) Kylin brand
rim diam with tire off (front) = 25 inches (need to recheck this since different from rear)
tire diam (front) = approx 29 inches (or maybe 28 7/8 with wear)
rim diam with tire off (rear) = 24 13/16 inches
tire pressure = 40lb
all the way around chain = 4 turns of the crank on small chainring
chain = KMC Z-series (probably z51, maybe z7, z72 or z8) 116 links, non-bushing
chain master link = KMC Missing Link II Reusable
front chainrings: 3, 48T/38T/28T
freewheel: MF-TZ21
rear cogs: 7, 28T/24T/22T/20T/18T/16T/14T
crank arm length, crank length = 6 11/16 inches BB spindle center to pedal spindle center = 170mm
pedal = maybe sunlite?
pedal threads = 9/16" outer thread diameter
rear axle slightly bent or hub axis drilled off-center- slight waggle of rear gear stack as wheel rotates
rear axle diam = varies, but 8.85mm in center, 9.4mm at threads
rear axle length = 7.25 inches
total wt approx 32lb