Total current design weight = 37.48kg
- 5.50 Front wheels + steering assembly
- 7.15 Wheel
- 0.67 Axle
- 0.38 Sprocket
- 0.52 Chain
- 0.71 Brake disk
- 1.15 Brake caliper & handle
- 5.25 Motor
- 5.34 Batteries
- 0.23 Controller
- 8.33 Frame**
- 1.50 Seat**
- 0.25 Steering wheel**
- 0.50 Other components**
** = estimated
- 3.5m of 75x25 RHS, 1.66mm wall at 2.38kg/metre
- 200x2700 of plate steel, 4.00mm or 5.00mm
- Frame itself weighs 8.33kg without remainder components
- Needs to have some kind of mounting arrangement, otherwise cannot get it into the axle. That is ... needs to slide in then mount
- 6004 bearings are ID 20mm, 12mm width ... but need to be "pressed" ... and need to stop the axle moving. eBay source seller is zaccsbearings.
- Source of the other bearings (http://www.smallparts.com.au) is too expensive.
- Located another source - http://www.vxb.com.
- Thoroughly researched Pillow Block bearings (easier to mount, by far).
- Found evidence of successful use for powered Go Karts - on the forum http://www.diygokarts.com
- Checked prices in Australia (double, or more than double).
- Ordered from http://www.vxb.com, using PayPal.
- Needs slight revision of frame design for Kart.
Frame - steel or fibreglass
Decision - is that at present (according to current abilities to fibreglass) must be steel chassis.
Steel:
......+ Very strong
......+ Very fast to make
......- A bit heavy.
......- May have difficulty buying the 1.6mm wall 75x25 RHS.
......- Cannot start now. Need to wait for car to be repaired, then go with Pops to buy.
Fibreglass
......+ Completely funky
......+ Can start today
......+ Extremely fun to make
......+ Very satisfying, if the outcome is good.
......+ May be very lightweight.
......- Takes a long time to build
......- Probably more expensive
......- Only maybe saves 2kg (down from 37.48kg to 35.48kg)
......- Potential strength problems with high-torque motor etc.
