Set 4 - Gears & Pulleys


	Parts List Set 4 --------- Gears ------------ Qty2~36 tooth gears 18cm diameter Qty8~24 tooth gears 12cm diameter Qty5~12 tooth gears 6cm diameter -------- Pulleys ---------- Qty2~12cm pulley Qty8~6cm pulley -------- Crank ---------- Qty 1 - Ash crank with brass drive "dogs", brass rotary crank. --------- Belts ------------ Qty1~20cm belt Qty1~40cm belt Qty1~60cm belt Qty1~80cm belt ----- Stub Shafts ---- Qty 2 ~ Stub Shaft -1U Qty 2~ Stub Shaft -2U Qty 4 ~ Stub Shaft -3U Qty 2 ~ Stub Shaft - 2U Qty 2~ Stub Shaft - 5U --- Shaft Collars --- Qty 12 ~ Split Shaft Collars - Stainless Steel --- Washers --- Qty 2 ~ Delrin Damping Washers -- Shaft Spacers -- Qty 6 ~ 1 unit spacer Qty 2 ~ 2 unit spacer ----- Connectors ----- Qty 14- ~ 0 unit connector Qty 5 ~ universal connector ---------- Tools ------------ Qty 1 - Collar Wrench Qty 1- Wooden Wrench ------- Pointers ------- Qty 2 - Acrylic pointers with laser engraved markings Qty 2- Brass stub shaft knurled accessory screw ---- Matrix Board ----- Qty 1 - Matrix board. 19" by 19" internal tapped inserts. Precision corner brass bushings with 1/4" holes. Qty 4- Rubber Feet, insert in matrix board corner holes. ---Torque Beam ---- Qty1 - 50cm torque beam/matrix board extension. (Not shown in picture) Qty2 - Solid brass torque beam attaching screw --------- Storage --------- Qty 1 - Cherry Wooden small part storage box with velvet lining --------- Manual ---------- Qty 1 - Reference Guide

Set 4 - Gears & Pulleys Price: $495.00

Set4 - Gears & Pulleys - Options

Shown: Cogworks Set4- Standard

Cogworks Set4 provides the necessary spark to get middle and high school students enthused about simple and complex machines. Set 4's unique design features include a 20" by 20" rectangular matrix board with a plethora of tapped insert holes. Set 4 includes all the parts listed in the Set4 kit list tabulated in the left green window Please see the Set10 description for a full explanation of the Cogworks stacked pulley/gear drive system.

Set 4 has a great sampling of pulleys, gears and hardware, it comes packaged with the mechanical arrangement shown left. The arrangement features an interesting design featuring two sub gearboxes, idler pulleys and belt systems. We call this as delivered machine "Discovery". Extra hardware pieces are stored in a rectangular hinged cherry box 4" by 10". Although Set4 does not have a storage case the smaller hardware can be kept safe in the supplied box. Set4 features rubber feet to prevent sliding on a table. Note: Set4 has same size size matrix base as Set5. Set5 features additional gears, pulleys, hardware and a dovetailed hardwood storage case and parts tray.

Mounting Holes Note: The Set4/Set5 matrix board shown above has a solid brass bonded thru bushing in each corner, 1/4" internal diameter. The base is a solid 1" thick with internal steel tapped inserts. The thru bushing can be used to solidly mount the base to a wall or exhibit. A series of set4 bases can easily form a larger exhibit with a different mechanical arrangement on each base. The corner holes can also be used to mount posts to mount a polycarbonate display dust cover.

Set 4 - Packaging

Set4 includes a hinged hardwood box with velvet lining to store all small parts & tools. Set 4 is shipped shrink wrapped in a rigid cardboard box.

Set 4 - Tutorial building the machine " Discovery"

The best way to learn is to do. Below are the step by step instructions to make a creation with Set4. We have many standardtutorials that can deeply explore mechanical motion & machines. We have found that if students go through the step by step construction process it has a profound effect on creating interest and actions to learn.

Step 1- Screw in the Posts.

The post position is identified by column, alphabetically from left to right. The student finds the column and then counts down the required number of holes to identify the correct post hole. The correct "Unit" length post ( 1U, 2U, 3U, 4U, 5U or 6U) is then inserted. "Discovery" required 11 posts in total. Post positions and unit length are given below.

A8-2U, C13-3U, D5-3U, F8-1U, G3-3U, K5-1U, K10-5U, N4-4U, O12-3U, Q5-4U and Q9-4U.

After completion the board should look like the picture.

Note: Posts should be tightened in place by the cogworks wrench.

Step 2- First Layer of Pulleys & Gears

Install the Qty 3 6cm pulleys, Qty3 12cm-24 tooth gears, Qty 2 6cm-12 tooth gears. Install brass "1U" spacers on any post without a gear or pulley. Inserts brass close coupled drive pins on the gears and pulleys as shown. Attach Belt17 ( "17" is length in cm), coded green. Install stainless steel shaft collar on any fully populated post.

Step 3- Second Layer of Pulleys & Gears

Install the gears, pulleys and spacers as shown. Attach Belt14 ( "14" is length in cm), coded red. Install stainless steel shaft collar on any fully populated post.

Step 4- Third Layer of Pulleys & Gears

Install the gears, pulleys and spacers as shown. Attach additional Belt14 coded red and Belt17 coded green. Install stainless steel shaft collar on any fully populated post.

Step 5- Fourth Layer of Pulleys & Gears

Install the gears, pulleys and spacers as shown. Attach Belt16 color coded orange. Install stainless steel shaft collar on any fully populated post.

Step 6- Add the crank !!

Step 7- Add reference markers via brass knurled screws, crank and study the motion !! Please click on picture to see in motion.