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There is a lot of information on this page. Go ahead
and print the entire page and the plans.
Use common sence, and don't do anything stupid with
your tools. Keep your fingers on your hands!!!
|We didn't take any pictures during the building process,
but i hope i can explain enough thru these pictures. Page one of the plans
illustrates the layout of the ramp support pieces. Layout points A,B, and
C first. Then draw perpendicular lines across the 2x8 every 3" starting
at point A and working toward the B and then A. Then using the dimensions
on the plan, measure out the distances to the curve. Connect the dots and
cut the ramp support out. Use it as a template and cut 3 more!
||Next you'll need to cut some notches in your ramp supports.
Stack all 4 supports and lay them out at the same time. I used 1"x1-3/4"
stock for my ribs, just because I had that size laying around. I'm sure
you could use some standard sized 3/4" stock, but perhaps you should add
another rib. The rib length is 31" which is the width of the ramps. This
is because a sheet of plywood can be cut into 3 pieces 48" wide by 32",
with the 32" way going across the width. Now there is 1/2" hanging off
both sides that's removed with a flush trim bit in your router. But more
on that later.
|This picture poorly illustrates the joinery at the legs.
A half lap is cut into the ramp supports parallel to the end, 2-1/2" wide
x 3/4" deep. A 2x3 leg with a matching half lap is screwed to the inside
of the ramp supports, and a 2x4 ripped to 3" sits on top of the leg and
connects the two ramp supports. A 1" filler block 3" long is needed to
fill the gap between the back of the 2x4 spreader and the lap joint in
the ramp support. A 31" 1x8 serves as a lower spreader between the legs.
This piece also keeps the legs from racking when sideways pressure is applied
to the ramp, caused by kids dragging this thing around. Page 3 of
the plans shows how this all goes together better.
||Now to assemble. Be sure to build on a flat level surface.
Next you can fit the trimmed 2x4, Part C between the
ramp supports and on top of the legs. It should fit flush at the top. If
it doesn't, make it fit! Use 3" screws and construction adhesive to secure
it. Make the filler block to fit into the void that remains. Construction
adhesive alone should be ok if the block fits snugly enough. This piece
will keep the legs from getting wobbly.
Now fit the rips part E into their slots flush to the
outside of the ramp supports. More construction adhesive and a 2" screw
down thru the rib into the support. Remember to pre drill everything first.
Now put the 2 ramp assemblies back to back and check for height. They should
be about 16" high. The plans call for extra so you can trim off one leg
in case things get racked during assembly. The top of the two ramps should
be perfectly flush across the whole joint. This is important to make a
smooth transition from one piece of the ramp to the other. This is also
why it's important to build this on a flat surface!
||It's important that the low end of the 2x8 ramp lays
flat on the ground. If it's a little off, you can adjust this with the
|I added support at the lowest part of the ramp. I think
I was thinking about initial impact of the skater hitting the ramp, but
now I don't think there necessary. If you choose to add these supports,
use a piece of poster board and trace the shape on the inside of the 2x8
ramp support (yellow arrow). Secure with a screw and construction adhesive
in the bottom rib.
||There is a lot of detail in this picture. A side view
of the 2 ramps back to back. Take a look at the first layer of 1/4" plywood.
Notice it goes up to the edge of the part C. The second layer is attached
after a spacer strip is nailed in place. The second layer runs over this
spacer. This allows the two ramps to be tight at the top even on uneven
|I'm sorry there are no pictures of applying the plywood
to your frameworks. I'll do my best to walk you thru. First cut out plywood
parts 1 & 2. Take plywood part 1 (the first layer of plywood) and dry
fit it to your frame. Align it so that one of the 32" ends is half
on the rib closest to the top of the ramp. This should leave you with a
couple of inches over on the low end of the ramp. Yes, you will need to
flex the plywood. Try holding it in place with clamps. Divide the overhang
on both sides, should be 1/2" on each side. If your happy with this, take
it off and apply construction adhesive to the the frame work where this
piece will fit. Make sure to only cover on half of that upper most rib!
lay the piece back on the frame, and starting across the top rib run some
1" drywall screws thru the plywood into the rib. Use clamps or small children
to hold down the plywood while you secure the plywood at the second rib.
Continue to the bottom, then down the sides. When your secure, run down
both sides with a flush trimming bit to clean off the extra plywood that
over hangs the sides. Be careful at the bottom, where you will run out
of surface for the ball bearing on the router bit to follow! Cut the bottom
with a hand saw.
Now grab plywood part 2 and complete the top of the ramp
in the same manner, apply glue to the frame, screw down the piece, then
trim with a router.
|Now cut 2 strips 1/8" thick from some 1x stock and cut
to 31". Glue and nail it flush to the top side of the 1st layer of plywood.
See the pic at left.
Now measure the length needed for plywood part 3. It
should hang about 2" beyond the first layer at the bottom of the ramp,
and some extra at the top! Cut the length needed and the rough width to
32 inches. Apply a lot of construction adhesive to the top of the first
layer of plywood and lay the 2nd layer on top of that. Divide the over
hang on each side, then give yourself that 2 inches (or what ever you needed)
extra at the bottom. Make sure you have extra at the top! Use clamps to
flex the plywood near the bottom and secure with screws. Continue as you
did the first layer, only working from the bottom and moving upward. Screw
down at all the ribs and along the sides. Run around the top and sides
with your router, be careful at the bottom again, use a hand saw!
||Finally you'll need some metal for the leading edge og
the ramp. I had an old stop sign in the garage. I was able to cut two 30"x6-1/2"
strips out of it. The metal is .085 thick, that's a little under 3/32".
If you don't feel like swiping a stop sign off the end of your street,
find somethin equivilent. Secure it with rivits.