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Built-in steer angle.

Discussion in 'Ask The Pros' started by mike-E, Mar 24, 2021.

  1. mike-E

    mike-E Pinewood Ninja

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    I want to build a full length drill jig for Awana that has a built in 5 degree cant and steer. Can anyone give me an idea of what angle to tilt a milling machine head to achieve roughly 3" over 4 feet?
     
  2. ljo

    ljo District Champion

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    5° positive camber / and 1° toe in.
    Do your rules allow you to bend your front axle?
     
    Last edited: Mar 25, 2021
  3. mike-E

    mike-E Pinewood Ninja

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    Yes, but it's not an easy task to bend a polished, non-grooved Awana axle without doing damage.
    Hoping to help out a bunch of kids get fast(er).
     
  4. Loud2ns

    Loud2ns District Champion

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    Put your k-house slot on the head, polish it up, and try this method from one of the greats. This works on Awana axles.
     
    Last edited: Mar 25, 2021
  5. Hangtime

    Hangtime Pinewood Ninja

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    Wow! You would need very steady hands to do that without causing damage. It occurs to me that a guy who has access to a milling machine might also have a small lathe available to him. So, why not use that to cut a bending groove?
     
  6. mike-E

    mike-E Pinewood Ninja

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    Yeah, doing three or four wouldn't be a problem. There's about 20 kids though.
     
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  7. Hangtime

    Hangtime Pinewood Ninja

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    Fair point. There’s a good reason guys use vendor axles. The bending groove, tuning slot, polish and bend 20x would be a pain in the ...

    Anyway, my experience with drilled steer has been a mixed bag. It sounds great, but my results have not been consistent. We used drilled steer in our scout cars this year. We made it work, but I think a bent steer axle would have been better.
     
  8. T-Bone Racing

    T-Bone Racing District Champion

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    20! That sounds crazy! Is the issue bending the axle or putting the groove in? Or both?

    Are you not able to buy an axle bender?
     
  9. mike-E

    mike-E Pinewood Ninja

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    Sure. I could buy a bender, but there's still bending and k-house grooves that would have to be cut. Just looking for a simpler method that could be done quickly every season. I'm building the jig anyway. Making my own 2.3 mm bushings too.
     
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  10. Hangtime

    Hangtime Pinewood Ninja

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    Sounds pretty ambitious. Do you have a way to harden that bushing?
     
  11. mike-E

    mike-E Pinewood Ninja

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    yes. there will be 10 total. O1 tool steel(drill rod), oil quenched and left full hardness. 65-67 Rockwell I'm guessing.
     
  12. Hangtime

    Hangtime Pinewood Ninja

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    Is this your home shop that you’re talking about?
     
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  13. mike-E

    mike-E Pinewood Ninja

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    No, I have a Bridgeport at home, but I'm a machinist and the toys at work are a lot more accurate.
     
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  14. Hangtime

    Hangtime Pinewood Ninja

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    That’s great! Maybe you can post some pics once it’s finished.
     
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  15. Brian Stanley

    Brian Stanley Council Champion Pro Racer

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    I've wanted to make my own drill jig for a while, but I'm not sure my little hobby mill is up to the task. I'd love to have a Bridgeport, but I don't think I can convince the wife she'll have to start parking in the driveway! :)
     
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  16. mike-E

    mike-E Pinewood Ninja

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    Still have to heat treat and sand about .001 off o.d. Bushings are 7/8 long and reamed to .090 which is just a smidge tight for a 2.3 mm drill. May have to hone using a drill and lapping compound.
     

    Attached Files:

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  17. DerbyBoyz

    DerbyBoyz Rail Runner Pro Racer

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    Looks really nice, great job.
     
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  18. Brian Stanley

    Brian Stanley Council Champion Pro Racer

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    Be careful, people will start placing orders with you! :)
     
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  19. Hangtime

    Hangtime Pinewood Ninja

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    Nice work! That looks very clean. Built in steer as well as cant?
     
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  20. mike-E

    mike-E Pinewood Ninja

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    2 1/2 degrees on one rear, 3 on the other. One side has 5 degrees cant only. The other has 5 and 1 degree steer. Both fronts at 4 3/4" wheel spacing and raised .035 from rear height. There are also straight holes 1/8" and 3/16" from the bottom in the center of the jig. I like to drill straight through where my ladder rungs are going to be and CA glue a toothpick in the hole before doing the cut out.
     

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