Wongster's Production
Share it on
  • Home
  • Blog
  • My Old Blog
  • My Shop
  • Resources
  • About Me...
  • Contact Wongster

Slot Car Rollers

17/7/2015

2 Comments

 
Been wanting to get back to the shop for the longest time. My last post to this site was about 2 years ago... Anyway, blame Terence, whom has been showing off his work.

A young man contacted me on Carousell asking if I'm also into CNC. He would like to customize some wheels, which are used as rollers on his slot car. From what I understand from him, the rollers would ride against the wall of race tracks, guiding the car along the track.

He forwarded me some pix:

Picture
Picture

He bought some blanks and would like to have them machines tongue design he wants. We chatted thru Carousell and migrated to Whatsapps with pix flowing to and fro. Based on what was told to me, i put them into 3D models.

Picture
Picture

But I find the spokes too thin at 1mm. So I reduced the number of spokes to 6 instead.

Picture
From his response, I know that he still prefers having 8 spokes than 6. So I went back to the drawing board and made some adjustments:
Picture
After having dinner with my girls at an overcrowded Korean BBQ restaurant at SOTA, I went by the young man's place to pick up the blanks.
Picture
Don't ask me why some came with the blue plastic ring and some don't. I don't know anything about slot car till now.

I imported the 3D model into BobCadCam and extracted the bottom edges. The features I'll be working on are the spokes since I'm given the blanks. After computing the toolpath, I ran the simulator to make sure.

Picture
Picture
I'm giving the rapid height a bigger value to clear the cap screw which I plan to use to hold the wheels.

Next will be to find the right sized capscrew to use. The centre hole is slightly less than 5mm, which is to be used to press in a 520 bearings. M5 capscrew seems about right but there is some tiny bit of movement. Also, the capscrew head is a tad too big. I've it turned down to just slight more than 6mm.

Picture
Picture
Picture
Terence suggested I try using a countersink screw as it would centre itself to the countersink.. As I do not have a suitable one, I'll make a trip down Kelantan Road sometime next week.

Just to have a feel of how it would look:

Picture
Ok. That's all for now. I'll see if I can get some work down tomorrow cutting some blanks to test. Wouldn't want to try it on the actual thing.

Meanwhile, Be blessed!

2 Comments
Geoff
17/7/2015 08:19:35 pm

Keep those Blog entries coming Wongster. I always enjoy reading them!

Reply
Kyle
18/7/2015 02:21:34 am

Thanks. Let me know if I'm doing anything wrong or if there are better ways of doing things.

Reply

Your comment will be posted after it is approved.


Leave a Reply.

    Enter your email address:

    Delivered by FeedBurner

    Categories

    All
    3d Printer
    Er32 Collet Chuck Proxxon
    Misc
    Misc Projects
    Projects
    Proxxon Pd400
    Sherline / A2Z Monster Mill
    Things I Bought
    Wabeco Mill

    Archives

    June 2018
    January 2017
    December 2016
    August 2015
    July 2015
    June 2014
    May 2014
    December 2013
    November 2013
    October 2013
    June 2013
    March 2013
    February 2013
    November 2012
    October 2012
    September 2012
    August 2012
    July 2012
    June 2012
    May 2012

    RSS Feed

Powered by Create your own unique website with customizable templates.