Step 1: Parts, Hardware and Tools
1) Logitec force pro GT4 racing wheel, $79 on amazon with free shipping.
2) A used front car seat, preferably a sport type. Mine came out of a 1994 Honda Civic that I bought from craigslist for $20 each.
3) Tools as shown in the picture. Note that the hand saw is for plastic pipes but can also cut small pieces of wood that are needed for this project. The drill bits are 3/32" and 5/16".
4) Hardware, as shown in the picture.
a) 1 pack of #8x3/4 Metal screws (~$3.20)
b) 4 pieces of 5/16"x21/2" bolts (~18 cents each)
c) nuts (~8 cents each)
d) flat washers (~7 cents each)
e) locking washers (~12 cents each)
5) PVC pipes and fittings as shown in the picture.
a) 2 pieces of 1" x 10' white PVC pipes (~$3.19 each)
Note: There are thick and thin types, get the thick one.
b) 8 pieces each of L and T shape fittings (~48 and 49 cents each)
c) 2 pieces of straight fitting (~32 cents each)
d) 1 cross shape fitting (~$1.29 each)
a) 1 piece of 11" x 71/4" x 1/2" plywood or something similar.
b) 3 pieces of 1" x 4' wood dowels (~$3.20 each, OPTIONAL)
Note: the dowels are optional. They help stiffen the frame a little but not significant enough to be included as required items. I provided this optional step as the last one in case anyone wants to try it.
7) A No.2 pencil and a black permanent marker
Step 2: Seat Frame Assembly
2) Cut 2 pieces of 143/8" pipe, label them B.
Assemble as shown using the cut pipes and 2xL and 2xT shape fittings. This is the base frame for the seat. Ignore the 5/16" holes on the fittings for now. We'll get back to them later.
Step 3: Rear Steering Base Assembly
2) Cut 3 pieces of 21/4" pipes, label them E.
Using 4xC cut pipes and 3xT shape fittings, assemble as shown in the first picture.
Attach 2xE cut pipes and 2xT fittings onto the front of the above assembly. Then attach this frame to the seat frame as shown in the second picture.
This is the steering base assembly for the rear.
Step 4: Front Steering Base Assembly
Using 2xD and 2xC cut pipes and 2xL and 1xT shape fittings, assemble as shown in the picture. This is the steering base assembly for the front.
Step 5: Overall Cage Base Frame Assembly
Step 6: Top Steering Column Supports
Using these cuts and 4xL shape fittings, assemble as shown.
These are the supports for the top steering column assembly.
Step 7: Top Steering Column Assembly
Slip them over 2xC and 1xD cut pipes. Then using the cross style fitting, assemble as shown. This is the top steering column.
Step 8: Final Steering Column Assembly
Step 9: Final Cage Assembly
Step 10: Steering Wheel Clamp Support
Step 11: Tightening the Cage
Optional: At this point, if you are interested in stiffening the frame a bit more, go to step 13. If not, continue with the following up to step 12.
2) Screw all the holes using the #8x3/4" screws and the drill. Let the screws mesh into the holes slowly. Then using a hand screw driver, tighten all the screws one last time.
Step 12: Placing the Seat
Place the seat over the seat frame assembly, align, mark, and drill 5/16" through holes for the bolt, as shown in the pictures.
Place the seat over the bolts, put the washers and tighten the nuts. Becareful to not overtighten them.
Now, sit back, and take a break. Then mount your steering wheel and happy racing.
Step 13: Optional, Stiffening the Cage With Dowels
1) Remove the seat if it's not already removed.
2) Detach the seat frame assembly from the rear steering base assembly.
3) Insert the dowels all the way into the front steering base frame as shown. The dowels are 1" in diameter and and should fit just right in the pipes. Twist the dowels on their way in to help ease the travel.
4) Reattach the seat base frame. The dowels are exactly 4' in length and should fit perfectly after the frame is reattached.
5) Carefully hammer all the fittings to stiffen the joints.
6) Place the seat and tighten all the screws. Or continue with step 11 if you came here from there.