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Assembling a Dobstuff ROCKER BOX KIT can be simple. You'll need
a few tools, including a power drill with screwdriver-tip and
some bar clamps.
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1) Regardless whether you purchased a Lightbridge rocker box
upgrade or a rocker box another telescope -- the assembly is
essentially the same. they say that a "picture is better than
1000 words".
I hope these help. If not, CONTACT ME!! |
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2) Use "bar clamps" to assemble the front and rear spacers along
with the sides. Note the sides are "pre-drilled" and the holes
are counter-sunk for the assembly screws. At this point -- DON'T
use any glue.
Later, after the assembly is complete and you've installed your
telescope in the rocker -- and all looks and feel right, I like
to "back out each screw" and dip them into glue. Re-insert the
screw and the glue will follow.
Enough glue will add whatever rigidity you're looking for.
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3) Inserting the 1 5/8" fine-thread wood screw is simple with a
power-drill and phillips-head bit. If you have one, use
PD2 or TD2 screw-bit. |
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4) Fit the bottom, use clamps as needed. Eight screws finish the
job easily. |
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5) I use the "3M 77-10 Super 77 Spray Adhesive" to affix the
bottom laminate to the rocker box. |
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6) Install the "feet". |
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7) Affix the Teflon bearings to the ground board. The
form has changed a bit over the years -- but the process is
about the same. |
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8) The center pivot comes with a washer and lock nut. Leave abut
1/8" spacing between the rocker box side and ground board. Loose
is better and will improve the motion of the rocker box azimuth
motion. |
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9) SOME, but not all, of my rocker boxes come with altitude
bearings of some sort. If that's the case, use "contact cement"
to affix the altitude-bearing laminate. I now use black FRP
laminate as a substitute for Ebonystar. It'll work just great.
CLAMPS?? If contact cement is used, and used correctly, the
laminate will adhere to the altitude bearing immediately. No
clamps will be needed. Just apply the contact cement to both
surfaces and burnish the two together. Directions are on
the side of the contact cement container.
Use the small nail (brad) as described in step 10. |
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10) A small brass-brad inserted into the ends of the
altitude-bearing laminate keep it in place. Drill a small pilot
hole first. It doesn't need to be very deep into the wood, just
through the laminate material itself. |
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11) These instructions will help assemble the Lightbridge rocker
box.
For a full explanation and set of instructions click
HERE to see the Lightbridge rocker
box assembly page. |
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12) If your rocker box comes with BREAK. Use this
technique to install.
Installing the “break” for the rocker box is
easy (we now install a "break" on all our
Lightbridge rocker boxes):
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Install the carriage bolt front the inside of
the rocker.
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Insert the small “wood screw” to about the
thickness of the altitude bearing.
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Slip the Teflon and washer over the carriage
bolt.
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The knob holds everything in place. Tighten the
knob as needed for “friction”.
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You're done!!
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For more information about
your requirements:
--Dennis Steele
--Tel: 650-315-6578 (anytime)
--Email: densteele@dobstuff.com
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