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Message from BMI Racing The Copperhead 10 is the first 2nd generation World GT car. After two years of racing and testing we had more than few good ideas that we wanted to incorporate in our next World GT car. As the concept for the new car started to come together we realized this was not going to be a DB10RRR. There we too many subtle tweaks, changes in suspension geometry, altering the chassis torsional stiffness as well as optimizing the car for the latest Brushless/LiPo power systems.
Front suspension assembly Step 1 Locate your lower front suspension arms and the hard anodized alloy pivot balls. Note that the arms are not symmetrical. Pop the pivot balls into the arms with the shoulder on the ball facing up. Do this by placing the ball on a hard flat surface and placing the arm over the ball. Carefully push the arm down over the pivot ball. Be careful. It will take a lot of force. Special Note: The best way to install the pivot balls is with an IRS pivot ball tool (www.teamirsrc.
Step 7 Step 6 Locate the Ti front axles, four 4-40 alloy lock nuts, and two alloy pivot balls. Thread the Ti axles into the steering spindles. Note that the threads on the axles that go into the spindles are left hand. After the axles are fully seated tighten an alloy 4-40 lock nut onto the threaded stub coming out the back of the spindle. Attach the upper suspension arm assembly to the lower suspension arms as shown with 4-40 x ½” screws.
Step 10 Step 9 Note that the Track Width Adjuster plates have the large holes chamfered on one side. This is to provide clearance for the heads of the 8-32 screws that hold the front suspension to the lower chassis. Make sure these face down towards the chassis in all assembly steps. Take a minute to prepare all your carbon components for assembly. With a file or sand paper knock off any sharp edges along the perimeter or the carbon parts. Special note: Carbon fiber dust is really bad for you.
Rear suspension assembly Step 13 Step 14 Locate the delrin center pivot assembly one 4-40 x ¼” and two 4-40 x 3/8” flat head screws. Locate two flex plates*, 2 flex plate pivot assemblies and 4 2-56 button head screws. 1.Insert a pivot assembly into a flex plate. 2.Pass the 2-56 screws through the pivot ball assembly from the top so they thread into the flex plate. 3.Repeat for the other flex plate.
Step 16 Step 17 Locate and install the two long anodized threaded spacers as shown with 4-40 x ¼” flat head screws Locate the two alloy rear pod plates, the alloy rear pod plate spacer tube 2 4-40 x 3/8” flat head screws and 4 4-40 x ¼” flat head screws. Attach the alloy pod plates to the lower carbon pod plate with the 4 4-40 x ¼” screws. Attach the alloy rear pod plate spacer tube to the allow rear pods with the 2 4-40 x 3/8” screws. Step 18 1.
Step 19 Locate the damper tube parts bag, the rear pod top plate and 4 4-40 x ¼” flat head screws.. 1.Thread a 4-40 x3/8” set screw into each of the 4 ball cups from the damper parts bag. 2.Thread a ball cup/set screw assembly into the ends of each of the damper tube pistons and damper tubes. 3.Apply 10000wt silicon diff oil to the pistons and insert them into the damper tubes. 4.Snap the ball cups of the assembled damper tubes onto the pivot balls on the pod top plate and wings.
Step 22 Step 23 Locate the rear axle parts bag. There are a couple of steps that can make your diff last longer that should be done at this time. Assemble the IRS Nickel-Teflon Macro Shock as per the included instructions with 40wt silicon shock oil. Use the right alloy diff hub as a holder and sand both sides of each diff ring on 600 grit sand paper using electric motor cleaner spray as a lubricant. Sand until you see an even scoring pattern across the face of each diff ring.
Step 24 Insert the IRS precision ride height adjuster cams into the rear alloy pod plates. Insert a 3/8” x ¼” flanged bearing into each ride height adjuster and insert the axle as shown. Install your favorite wheels and measure the width of the car. Shim as necessary to obtain a centered axle and a 200mm rear track width. Special Note: The Copperhead 10 is designed to work with IRS precision ride height adjuster cams.
Step 27 The Servo mounts are attached to the lower chassis with two 4-40 x ¼” flat head screws. At this time drill out the center holes on your servo saver (not supplied) for two Nickel Teflon ball studs. Secure them with two 3/16 alloy lock nuts. Locate two titanium turnbuckles and four black ball cups. Assemble them as shown and adjust them to an over all length of 2.66” (67.5mm). This is a starting point.
Mounting Electronics The “Center Mass“ chassis layout of the Copperhead 10 is one of the features that really puts this car ahead of the pack. This chassis design moves the batteries forward and places the electronics between the battery and the motor pod. This accomplishes two things. 1. The batteries are moved forward to obtain the proper weight distribution. 2. The electronics are located in the most efficient location (short power wires, tidy receiver wiring).
