how to make a go kart by guid765

VIEWS: 118 PAGES: 4

Guide teaches you how to make a go kart

More Info
									                           Making a go-cart




T   he hardest part of making a go-cart is finding the wheels. The sad truth is that most
    modern baby carriages aren’t made the way they used to be, so the classic idea of finding
a stroller and removing the axles intact isn’t really possible anymore. Those carriages that do
survive are antiques and too valuable for our purposes.


                                         The Design


                       You will need
                  •    Two fixed axles with wheels attached.
                  •    Plank to sit on—we used 3/4 in (18 mm) pine.
                  •    Axle wood. Length will depend on your axles, but we
                       used a plank of 31/2 × 11/2 inches (88 mm × 37 mm).
                  •    Rope for the handle.
                  •    Two eye screws to attach the rope.
                  •    Four electrician’s metal “saddles” (see explanation below).
                  •    Wood paint (color of your choice).
                  •    11/2-inch screws (40 mm).
                  •    Vinyl and foam if you intend to add a seat.
                  •    A steering bolt (see explanation).
                  •    Upholstery tacks for the seat.



First, cut the wood. We cut two lengths of 17 in (43 cm) for the axles but this will be differ-
ent for each project. We also cut quite a long central plank at 3 ft 9 in (114 cm). Again, that
depends on the length of your legs. Allow some growing room at least. It really is a good idea
to let an adult cut the wood for you, especially if power tools are involved. If you ignore this
advice and cut off a finger, please do not send it to us in the mail as proof.


                                       making a go-cart

                                              79
     However, the good news is that there are other things you can use. We found our two
axles after many visits to three local waste management centers—dumps. It took many weeks
to find ours, so the best planning you can do is to go out now and make your face known to
the employees in every dump, recycling center, or junkyard in your town. Our rear axle came
from a golf cart and our front from a modern three-wheel stroller—used ones are just starting
to appear in these dumps, so you might find one faster than we did. The other possibility was
to find a tricycle and use the rear wheels from that. As long as it has a fixed axle that doesn’t
turn with the wheels, you needn’t worry. If at all possible, use metal wheels rather than plas-
tic ones. Plastic is an awful material and has a tendency to shatter under stress—while going
down a hill, for example.
     It is also a good idea to sand and paint the wood—or varnish it—at this stage. We com-
pletely forgot to do this and painting it at a late stage was very fiddly. Better to do it now. We
used a wood primer and black matte paint. As we had an old can of varnish in the shed, we
then varnished it as well. You can, of course, buy paint, but digging out old cans with just a
dab still wet at the bottom is somehow more satisfying.
     When the painted wood is dry, attach the axles. Twenty years ago, we used U-shaped nails,
and these were perfectly reliable. This time we found our axles were much wider and had to
find an alternative. This is the sort of problem you might have to solve.
     Above is an electrical “saddle,” available for less than a dollar from any electrical shop.
They are also quite useful for attaching axles and come in a variety of sizes.
     We used three of them on the front axle. The
original plan was two, but one of the screw holes
seemed weak and we wanted it to be reliable. Make
sure you place the saddles carefully so that the axle
is straight on the plank. Given identical saddles, we
measured the distance from the top of each one to
the edge of the wood. You can place this by eye, but
it’s better to measure and be certain.
     11/2-in (40-mm) screws will secure the rear of
the main plank, as shown below. It looks easy, but




                                      making a go-cart

                                               80
some careful measuring is necessary to make the angle between the main plank and the axle
plank exactly ninety degrees. You must also make sure that the overhang on each side is the
same. We clamped the pieces together quite loosely and then used a rubber mallet to tap it
into place, measuring again and again until we were satisfied.




    The steering is the only tricky thing left to do. We were extraordinarily lucky in finding that
the single wheel bolt on a three-wheel stroller is perfect for this, but you can’t depend on that
kind of luck. You must find a bolt with a thread only partway along.




               Bolt from a three-wheel stroller           More likely to use this type.

    The benefit of this is that a nut can be tightened on the bolt and yet the bolt can still turn
freely in the hole. They are available from any hardware store. Find one a little over the length
you need and add a washer at both ends—or more if it’s too long.




                                        making a go-cart

                                                  81
    Getting the front position right wasn’t as hard as the rear. It was crucial to have the same
distance of axle poking out on either side as before, but it didn’t have to be at ninety degrees
as the axle was going to pivot—otherwise there could be no steering. The nice thing about this
design is that you sit with your feet on the steering bar, also holding onto ropes. As a result, it
is extremely maneuverable.
    We decided to put a seat on ours. We asked in a carpet store and were given a bit of carpet
and a vinyl sample for free. We folded the vinyl around a piece of pine, using the carpet as
padding between. We then tacked it down with upholstery nails from a hardware store and
screwed the whole thing to the main plank from underneath. The rope was attached using a
bowline knot on each end.


                                              Cost

Getting a stroller and a golf cart from two different dumps cost us $20. We think it might have
been possible to get them for less, but after weeks of asking, we were so pleased to find them
that we offered too much. Begin by offering $5. The wood came to $20, the screws, nuts and
washers cost around another $10. The paint came from old cans in the shed. We had the rope
already. Altogether, it came to around $60. However, to buy a go-cart of this sort of quality,
you would have to pay at least $100 and possibly even $150 or more. This one has the benefit
of lasting longer than pedal versions (room to grow), being much faster down hills and, well,
being something you made rather than a company in China.




                                      making a go-cart

                                                82

								
To top