News:

C5alive - The Premier Sinclair C5 website
https://www.c5alive.co.uk


Author Topic: Drive gear has small cracks  (Read 4123 times)

0 Members and 1 Guest are viewing this topic.

Offline gertk

  • Jr. Member
  • *
  • Posts: 58
  • Battery level: 6
  • When in doubt: C5
Drive gear has small cracks
« on: 11, May, 2013 - 17:01:37 »
Today when disassembling the rear wheel for inspection I found out the big drivewheel has some small cracks.



I recognize this problem from several consumer electronics stuff (like CD/DVD player drive motors) where sometime the small gear on the motor develops a small hairline crack and the gears do not mesh properly anymore.



In this case the cracks are not all the way through so it is still sitting tight but I wanted to stop the cracks from growing bigger. The smaller crack was quickly filled with industrial cyanoacrylate. To make the cyanoacrylate fill the larger gap I filled it with an aggregate (some plexiglas filings left on my workbench..) and soaked it in cyanoacrylate.
Photo later on..

I hope this way the wheel is strong enough again.
 

Offline radiomarty

  • Millennium Member
  • *****
  • Posts: 2641
  • Battery level: 100
Re: Drive gear has small cracks
« Reply #1 on: 11, May, 2013 - 19:55:50 »
Looking forward to seeing the results of this as it is a very common failure with this component - Marty

Offline dansretropod

  • Full Member
  • **
  • Posts: 138
  • Battery level: 3
  • The C5 was born to be customised... 3D style
    • www.c5owners.com
Re: Drive gear has small cracks
« Reply #2 on: 03, October, 2013 - 22:27:09 »
Marra is making metal versions of these, I'm sure theres also scope to run these through a 3d printer

Offline coverman

  • Sr. Member
  • ***
  • Posts: 487
  • Battery level: 4
Re: Drive gear has small cracks
« Reply #3 on: 04, October, 2013 - 10:23:53 »
Will be surprised if a 3D layer printed drivewheel will have the shear stregth to withstand the torque at lock.

Offline dansretropod

  • Full Member
  • **
  • Posts: 138
  • Battery level: 3
  • The C5 was born to be customised... 3D style
    • www.c5owners.com
Re: Drive gear has small cracks
« Reply #4 on: 04, October, 2013 - 10:41:22 »
Aye :D But if you never try, you will never find out ;D If it disintegrates I'll use a metal one

Offline C5 ENTHUSIAST + RESTORER

  • Millennium Member
  • *****
  • Posts: 1877
  • Battery level: 8
Re: Drive gear has small cracks
« Reply #5 on: 04, October, 2013 - 17:42:31 »
Hi there Dan I think that if we all check the large drive wheel we will find that most of them will have small cracks in them ....Chas