Show us something that you MADE...

Discussion in 'Shiny Things' started by Ricardo Kuhn, Nov 8, 2009.

  1. AK Oldman

    AK Oldman WANDRN

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    That is beautiful! Many years ago we used to make them but used an ether cartridge instead of CO2. One guy would hold the car and a lighter. A second guy would use a hammer and nail to puncture the end of the cartridge. Nice flame shooting out of the back and the car would haul butt!
  2. Keith

    Keith Slabbing it

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    I built a table for a lathe I recently bought.

    I used a sheet of 15/32 sanded plywood. I had home depot cut it in four pieces, of 2'x4'.

    I set the lathe on a sheet of ply and set it in a locale that looked right and traced the holes and measured twice and drilled once for the lathe location. I sunk 4 1/4"-20 Tee Nuts in the bottom of the first sheet of ply to hold the lathe in place. I screwed and glued the four sheets together, capturing the tee nuts in place and making a 2" think Glu-lam of sorts, of 2'x4' dimensions.

    I used four carriage bolts to hold the motor in place, pretty much only because I didn't have any extra tee nuts when I screwed and glued everything in place.

    To hold the legs in place, I cut the sheet of ply it was being held to into 8 1'x2' triangles, to support the 8 3' 2x4s I fashioned into 4 4x4s.

    I left a 2" space at the top of the triangles to nest the table into the legs and supports and screwed everything together.

    I had two extra pieces of cull lumber left over, so I used that to support the table legs and make a base for a shelf in the future.

    Not bad for $25 worth lumber, $4 in glue, some screws, manual labor and part of a day off of work.


    Blah, blah, blah pictures...

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  3. Keith

    Keith Slabbing it

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    As well...


    I found a front seat in the dumpster at work, about a year ago. It looks like it came out of a newer BMW. It's a heavy-ass seat, so I stripped off all the wiring and brackets and seat belt tensioner and lumbar pump and blah, blah, blah.

    I wound up with some other dumpster fun stuff, including a couple backboards from our local CHP who was moving location and unloading a bunch of good stuff.

    A free computer seat base from a coworker and the idea hit.


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    Whammo, new german luxury computer chair.
  4. Pablo83

    Pablo83 Sleep, Wrench, Ride

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    Looks comfy. And it should hold you in well while cornering. :lol3
  5. mjydrafter

    mjydrafter evil boy for life

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    Mine was similar way back when. Held the school record for a while, IIRC scale 212 mph. Mine was ugly though.

    My buddy's was beautiful, perfect mirrored deep red paint. They had sanded it for days, and wet sanded and polished...

    It took off and went about 3' before flipping onto it's top and sliding down the floor (track) scratching it all to shit...:lol3
  6. Signal

    Signal Cynical Idealist

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    :lol3
    :lol3 I was the "head overseer" and consultant- he did countless hours

    He spent most of thanksgiving day on my father in law's workshop shaping it, and days sanding it.

    He polished and then made the center of the axles concave to reduce friction.
    He ground down the wheels (save a 1/4 inch ridge) at the school on a lathe

    I did spray it :lol3.... I managed to spray a bad combo of primer/paint that reacted to create a goo :huh...Much sanding and stripping later we were back to wood... then just quickly threw on the gold
  7. Anglewood

    Anglewood Has a fake Mustache

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    Each year my school does a Pinewood Derby as an 8th grade project. Every 8th grader is given a kit and about a month (with deadlines) to build a car. Along the way we work in various 8th grade standards and the kids all build their own cars along the way. One fun part is that as a teacher, I get to build a new car each year to compete in the "teacher race." This is my submission from this year. The body shape is based on the 1931 Miller V-16 race car. I ended up winning the teacher class for the second year in a row by employing a number of speed tricks that I have learned over the years.

    [​IMG]

    -Connor
  8. Signal

    Signal Cynical Idealist

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    You have the VERY old school wheels :deal, excellent


    We've had local dads make cars and run a separate competition when the boys rent the track. Good times :freaky- nad the boys get to do more of their own car
  9. Slimie

    Slimie Long timer

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    :ear:ear:ear:ear:ear:ear :evil

    -Simon
  10. mjydrafter

    mjydrafter evil boy for life

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    A few I helped my son when 2nd place in his pack a couple of years ago were:

    Polish the axles on the lathe. Make sure to ream the seams out of the insides of the wheels. Also the axles (nails) have flashing on the backside get rid of this and polish them up real nice. Also remove the flashing on the outside diameter of the wheels.

    Do not use the pre-made axle holes/channels. Drill them yourself, make sure they are all straight and stuff. If you use a mill, it's really easy to set up the 3 of the axles holding the car up, and the fourth not dragging the car down. Balance it on 3 wheels:deal

    Weight as far back in the car as possible (greatest gravitational influence, in the front once the front of the car gets to the flat gravity's done, with the weight back even when the front of the car gets to the flat the weight is still pushing)

    Wear in the wheels on the belt sander with copious amounts of dry graphite.

    Work the insides of the wheels where the get up against the car, polish this up really good, and make sure the wheels are up against an area without paint. Use the graphite here in excess.


    The more accurately you can weigh it the closer you can get it to the heaviest you can run. If you're lucky they will have a weigh in early, so you can check their scale against yours.

    Those are the major areas that will put it in the running.
  11. Trixie

    Trixie No, not that Trixie

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    I'd add :to the above tips- weight- to the rear and as high as reasonably possible. The track start is elevated. The higher the weight, the greater the potential energy= greater terminal speed, all other things being equal.

    I helped my son make a rail, similar to the gold one pictured, with a lead rear spoiler. met all specs and won easily. Just be careful it doesn't tend to wheelie.

    Also, if you don't have a lathe, a drill press or even a hand drill (properly secured) will do fine to hold the nails for polishing.
  12. Slimie

    Slimie Long timer

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    Thank you both, already looking forward to next years Cub Scout race!

    -Simon
  13. Anglewood

    Anglewood Has a fake Mustache

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    Those guys pretty much covered it. The main key is reducing friction as much as possible while taking advantage of gravity by maximizing weight (and placement).

    -Connor
  14. Fast_Boy_Slim

    Fast_Boy_Slim Don't call me Wighty

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    What a great tradition. We have nothing like that in the UK. Where do you start with stuff like this do all the kids get given some wheels and a hunk of wood or do you have to source it all? Do the girls build cars too as there are plenty of competitive Dads with daughters too :D
  15. thisflatearth

    thisflatearth 2 wheel has been

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  16. Slimie

    Slimie Long timer

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    Our local Cubs do it every year (East Devon), that's why I'm looking for tips!

    They supply a block of pine, four wheels and pins to hold them and the rest is up to you.

    -Simon
  17. mjydrafter

    mjydrafter evil boy for life

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    Just to add to the above our pack gives each boy a car, and then parents can buy one ($10 IIRC).

    The pack we were in did something really cool and invited the girl scouts to our derby. So the GS each made their own cars as well.

    :D

    Does the UK have Hobby Lobby? I've seen cars and all kinds of extras there. Cars, stickers, wheels, little dudes (drivers), fake engines, you name it.

    Other than the wheels, everything else would be pretty easy to recreate on the cheap. Just need some pine wood blocks and nails.
  18. Slimie

    Slimie Long timer

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    Our local Cubs sell the components to raise funds, my daughter is a Cub :evil she didn't fit in any of the more girly groups!

    We came almost last in the event this year, mostly because I followed the rules and let her do most of the work.

    Next year will be different :lol3

    Hobby Lobby, what's that?

    -Simon
  19. ADK

    ADK ____

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    Dads doing all the work and using these speed cheats ruins the event for the kids. there should be a supervised build where the kids do their own work and an open class for the cheater specials. :norton :1drink
  20. Anglewood

    Anglewood Has a fake Mustache

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    That's a great site for speed tips (I've used their basic speed kit before). The specific kit we use can be found here:

    http://www.pinewoodderbycars.com/

    The kit is only $3.45, and my fellow science teachers and I applied for a grant to supply kits to all of our 8th grade students. The work is all up to them and they can get very creative. I of course am available to help cut out and paint cars, but I encourage them to get as much help at home as they can. Here is a pic of the finalists from my five 8th grade classes:

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    -Connor