Dismiss Notice
Welcome to
Pinewood Derby Online, a forum for questions and discussions about everyone's favorite gravity powered racers!
CLICK HERE to register as a member today for full access to the forum, it's fast, simple, and absolutely free!

2021 Awana Grand Prix Goals/Self Challenge

Discussion in 'General Pinewood Derby Discussion' started by CVRacing, Feb 15, 2021.

  1. CVRacing

    CVRacing Pinewood Ninja

    Messages:
    26
    Likes Received:
    29
    Trophy Points:
    3
    Gender:
    Male
    Location:
    Allendale, Michigan
    I have created a little challenge for myself this year since my church Awana Grand Prix and the Michigan Awana Grand Prix State Championship races are both cancelled for 2021. I figured I would create this thread for anyone who would like to follow along. I plan on posting some pictures throughout the process and of course the results.

    2021 Awana Grand Prix Goals/Self Challenge
    1. Beat personal best 2020 State Race time: 2.5056 sec.
    2. Beat personal 2020 State Race Avg. time: 2.5119 sec. -based on two passes down each lane, worst time dropped.
    3. Maintain personal 2020 State Race Std Dev: 0.0032 or lower
    4. Beat the fastest 2020 State Race time: 2.4991 sec.
    5. Beat the best 2020 State Race Avg. time: 2.5038 sec. -based on two passes down each lane, worst time dropped.
    -I am planning on building two cars one with fenders and one without.
    -I will be doing this on a 32 ft. Besttrack with Champ Timer, the same track used for the 2020 State Race.
     
    Jimmy & his 2 Kids and DerbyBoyz like this.
  2. CVRacing

    CVRacing Pinewood Ninja

    Messages:
    26
    Likes Received:
    29
    Trophy Points:
    3
    Gender:
    Male
    Location:
    Allendale, Michigan
    -I got two bodies cut and squared up tonight, here is how I do it.
    1. Started with 5/16" thick basswood and cut the bodies to rough size.
    2. Flatten the bottom of the body: draw lines across the entire bottom of the body and sand until lines are gone. I tape sand paper down to my table saw to do this. Do not push down while sanding, you want to sand the bottom flat not push it flat.
    3. Square one edge with the bottom: I support the body with the flat sanded bottom against a square while sanding the edge. Again I draw lines down the entire edge and sand till they are gone.
    4. Square the remaining edge and check width: Sand the second edge just like the first but be sure you are also checking your finished width. I also check the fit of each body in The Block and in my body jig.
    -Ready to layout some pockets and axle holes.

    20210216_223728-COLLAGE.jpg
     
    DerbyBoyz likes this.
  3. CVRacing

    CVRacing Pinewood Ninja

    Messages:
    26
    Likes Received:
    29
    Trophy Points:
    3
    Gender:
    Male
    Location:
    Allendale, Michigan
    Axle holes are drilled:
    -I used The Block and #43 drill bits
    -Rear axle holes are drilled at a 3 deg. angle, 1/8" up from the bottom of the body.
    -Front axle holes are drilled straight, 3/16" up from the bottom of the body.
    -The rear axle holes are drilled as far back as possible so the wheels are flush with the rear of the body.
    -4-1/2" wheel base.
    -The dominate front axle will be bent for steer, this will also cause the other front wheel to be raised off the track.
    20210217_145712-COLLAGE.jpg
     
    Jimmy & his 2 Kids and DerbyBoyz like this.
  4. CVRacing

    CVRacing Pinewood Ninja

    Messages:
    26
    Likes Received:
    29
    Trophy Points:
    3
    Gender:
    Male
    Location:
    Allendale, Michigan
    Drill Press Work is Complete:
    -Drilled router plunge holes for cutting out pockets with router.
    -Drilled 1/8" holes in corners of weight pockets.
    -Drilled 1/8" holes for axle glue holes, 1/2" in from side of body.
    -Cut 1/16" deep notch from dominate front side of car for dominate front wheel. Used router bit on drill press to do this.

    PXL_20210218_022545839-COLLAGE.jpg
     
    Last edited: Feb 19, 2021
    Jimmy & his 2 Kids and DerbyBoyz like this.
  5. CVRacing

    CVRacing Pinewood Ninja

    Messages:
    26
    Likes Received:
    29
    Trophy Points:
    3
    Gender:
    Male
    Location:
    Allendale, Michigan
    Lots of Body Work:
    -Laid out the body on each car blank.
    -Used my router and body pocket fixture to remove the unwanted material from the body.
    -Laid out the side profile on the car bodies (making sure to check thickness with tungsten cubes).
    -I built a new fixture to hold the cars while sanding the profiles and used two sided tape to hold the car bodies on the fixture.
    -Sanded the top and bottom of both bodies verifying thickness and depth of weight pockets with tungsten cubes throughout the process.
    -The finished product is 2 frames that weigh just 5 grams each.

    PXL_20210218_160050092-COLLAGE.jpg
     
    Jimmy & his 2 Kids and DerbyBoyz like this.
  6. Mojo Racing

    Mojo Racing National Contender Pro Racer

    Messages:
    943
    Likes Received:
    507
    Trophy Points:
    93
    Location:
    Uniontown, OH
    Nice work, CV! The bodies look really good!

    I like the idea of that sanding jig. Over the years, my cars have turned into airplanes on a few occasions. When they fly that soon, they don't usually fly down the track.

    Good job!
     
    Jimmy & his 2 Kids and CVRacing like this.
  7. DerbyBoyz

    DerbyBoyz Rail Runner Pro Racer

    Messages:
    89
    Likes Received:
    94
    Trophy Points:
    18
    Gender:
    Male
    Location:
    Oregon
    Looking really nice, great job CV.
     
    Jimmy & his 2 Kids and CVRacing like this.
  8. CVRacing

    CVRacing Pinewood Ninja

    Messages:
    26
    Likes Received:
    29
    Trophy Points:
    3
    Gender:
    Male
    Location:
    Allendale, Michigan
    Thank you, Mojo, and I know what you mean by sending them flying early. There is just to much time into making these to risk it and the jig worked great.
     
    Jimmy & his 2 Kids and DerbyBoyz like this.
  9. CVRacing

    CVRacing Pinewood Ninja

    Messages:
    26
    Likes Received:
    29
    Trophy Points:
    3
    Gender:
    Male
    Location:
    Allendale, Michigan
    Thank you, DerbyBoyz.
     
    DerbyBoyz likes this.
  10. CVRacing

    CVRacing Pinewood Ninja

    Messages:
    26
    Likes Received:
    29
    Trophy Points:
    3
    Gender:
    Male
    Location:
    Allendale, Michigan
    Finish Body prep:
    -Glued 3/32” Balsa veneer to top and bottom of car bodies.
    -Sanded veneer flush with sides of car bodies.
    -Fit tungsten into rear weight pocket formed by the veneer.
    -Sanded top and bottom of car to finished profile.
    -removed veneer from bottom of car to access forward weight pocket.
    -One body now weighs 7.1 grams and the other weighs 6.8 grams.
    PXL_20210221_140948816-COLLAGE.jpg
    *Onto the fenders*
     
    Jimmy & his 2 Kids likes this.
  11. CVRacing

    CVRacing Pinewood Ninja

    Messages:
    26
    Likes Received:
    29
    Trophy Points:
    3
    Gender:
    Male
    Location:
    Allendale, Michigan
    So two things:

    1. I am at a point in this build were I start to think that what I built isn't up to my standards and I could make it better. Time to decide to keep going or restart.

    2. I am not a fan of building fenders, probably because I haven't done it enough yet.
     
    Jimmy & his 2 Kids and DerbyBoyz like this.

Share This Page