BMI Racing DB10R, Assembly Manual

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Step 6
Attach the upper suspension arm assembly to the
lower suspension arms as shown with 4-
40 x ½”
screws.
Step 7
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.
Thread the alloy pivot balls into the holes on the
steering arms and secure them with alloy 4-40 lock
nuts. Remember these are alloy pivot balls so
make the nuts snug. They are strong enough to
last a few racing seasons; but if you crank them
down, you can snap them.
Step 8
1. Slide 4 shims onto the king pins against the
capped end of the king pin.
2. Pass this through the pivot ball in the upper
suspension arms rod end.
3. Place one more shim on the king pin.
4. Slide the steering spindle onto the king pin.
5. Slide the king pin through the pivot ball in the
lower suspension arm.
7. Slide the spring onto the king pin.
8.
Place a nylon spring perch and one 1/8”
shim onto the king pin then snap an e-clip on
to the bottom of the king pin.
9. Repeat for the other side of the front
suspension.
Locate 2 steel 1/8” king pins,12 1/8” shims, 2 e-
clips and 2 .022” king pin springs and 2 white nylon
spring perches.
Special notes :
Make sure the steering arms on the spindle are
pointing towards the rear of the car as shown in
the picture.
The axle is offset in the spindle. Make sure the
axle is closest to the lower suspension arm. As
shown in the picture to the left
It is important that the king pin slide freely in all of
the parts including the steering spindle. When
you thread the axle into the spindle, it may swell
the king pin bore and make it tight on the spindle.
You can try to use a 1/8” drill to open it up but the
best solution is to use a 1/8” reamer.
You can order the reamer from:
www.mcmaster.com . The part number is
2995A61