Mcmaster/Vex Urethane Wheels

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	B	C	D	E	F	G	I
1
2	Vex Pulleys
3	Tooth count	OD (in)	Type
4	18	1.083	Metal
5	24	1.459	Metal
6	30	1.835	Metal
7	36	2.211	Metal
8	42	2.588	Plastic
10
11	Polyurethane Tubing for Fabrication (Black)
12	OD (in)	ID (in)	Wall Thickness (in)	Mcmaster PN	Pulley	Psuedo OD (in)
13	1.75	1	0.375	87235K29	18	1.80	Should Fit very nicely for most. Some might be a tad loose for high torque applications
14	2	1	0.5	87235K32	18	2.04
15	2	1.25	0.375	87235K33	24	2.14
16	2	1.5	0.25	87235K34	24/30	2.26
17	2.5	1	0.75	87235K36	18	2.53
18	2.5	1.5	0.5	87235K38	24/30	2.71
19	2.75	1.5	0.625	87235K42	24/30	2.95
20	2.75	1.75	0.5	87235K43	30	2.80	Either is a very large (but possible) interference requiring some stretching, or a loose fit that requires shimming the OD of the pulley with VHB (recomemended) or other double side tape
21	3	1	1	87235K45	18	3.03
22	3	1.5	0.75	87235K46	24/30	3.18
23	3	2	0.5	87235K47	36	3.14
24	3	2.25	0.375	87235K48	36	2.97
25	3.5	2	0.75	87235K52	36	3.62
26	3.5	2.5	0.5	87235K53	42	3.56
27
28	Links
29	Vex Metal Pulleys		http://www.vexrobotics.com/vexpro/all/htdpulleys.html
30	Vex Plastic Pulleys		http://www.vexrobotics.com/vexpro/all/htdversapulley.html
31	Vex Hubs		http://www.vexrobotics.com/vexpro/all/versahubs.html
32	Mcmaster Tubing		http://www.mcmaster.com/#standard-polyurethane-hollow-tubing/=x2cvw7
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