anyone have any bright ideas? any little-known stores with good prices? should I just get a new cheap bike from the warehouse?
Garmin Fenix 5
nickb800: Have you looked at torpedo7? No single cranks for under $60, but a few options for cranksets at $120
3: Why do you need a new crank to begin with? Did it come loose and slog out? Did it get bent during a jump or big drop? Did the pedal insert fail?
If it came loose / is creaking, then the bottom bracket axle will also be damaged.
The axle is on a taper, and if the edges are worn in any way, the crank will either come loose again (damaging the axle even further) while creaking worse and worse over time.
If it was my money, I'd buy a new bike.
Dunnersfella: I should mention, not all axle holes are drilled on the same angle... so make sure it matches the one you already have, or one will be at 45 degrees to the other crank!
Oh, and as Shimano own a patent for the axle taper, other companies 'work around' this patent, meaning it won't always work well as a friction fit on your bottom bracket.
Yup, I used to be a bike mechanic. Yup, cranks are a problematic area, especially square taper units.
nickb800: What's your timeframe? There a few cheap options on Ebay e.g. this for ~$30
marmel: Why not just buy another crankset off trademe? Older style square taper crank sets come up for sale reasonably often.
Dunnersfella: Square taper cranks are just terrible... no wonder they were replaced by the (still annoying) Octalink / external bottom bracket standards.