Author Topic: Does this need replacing oval mounting holes?  (Read 674 times)

Online McCabe-Thiele (Ted)

  • Grogu
  • *
  • Posts: 6393
    • View Profile
Does this need replacing oval mounting holes?
« on: February 07, 2023, 12:13:35 PM »
Whilst starting to clean up the front brakes I noticed the top calliper pivot arm bracket had visibly oval mounting holes - one is much worse than the other.
The ovality is visible from the rear as well.
The long pivot pin was nice & free - could this have been caused by this having been stuck previously?
Will it need replacing if they are available?

.top bracket by Macabe Thiele, on Flickr

« Last Edit: February 07, 2023, 12:18:31 PM by McCabe-Thiele (Ted) »
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline taysidedragon

  • SOHC Master
  • Posts: 1358
    • View Profile
Re: Does this need replacing oval mounting holes?
« Reply #1 on: February 07, 2023, 05:49:44 PM »
As long as the brake pivot pin hasn't got any play in it you'll be fine. The mounting holes give you a bit of adjustment to line it up and won't move once everything is tightened up. 👍
Gareth

1977 CB400F
1965 T100SS

Online McCabe-Thiele (Ted)

  • Grogu
  • *
  • Posts: 6393
    • View Profile
Re: Does this need replacing oval mounting holes?
« Reply #2 on: February 07, 2023, 07:13:21 PM »
I did wonder if the torque on the bolt would hold it nicely in place.

Was the pivot arm originally painted or polished alloy?
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline Oddjob

  • SOHC Jedi
  • Posts: 4296
    • View Profile
Re: Does this need replacing oval mounting holes?
« Reply #3 on: February 07, 2023, 07:15:55 PM »
Painted, like the casings Ted.
Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.

Online McCabe-Thiele (Ted)

  • Grogu
  • *
  • Posts: 6393
    • View Profile
Re: Does this need replacing oval mounting holes?
« Reply #4 on: February 08, 2023, 11:39:12 AM »
My existing calliper arm is polished - its cleaned up quite quickly on my buffing wheel (not to Kens standard)- I think I prefer it painted as on my 400 so good to hear they were painted originally.
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline Sesman

  • SOHC Master
  • Posts: 2000
    • View Profile
Re: Does this need replacing oval mounting holes?
« Reply #5 on: February 08, 2023, 12:00:32 PM »
Painted black Ted…..not nut brown😁

Online McCabe-Thiele (Ted)

  • Grogu
  • *
  • Posts: 6393
    • View Profile
Re: Does this need replacing oval mounting holes?
« Reply #6 on: February 08, 2023, 12:30:38 PM »
Have you seen that 500 link I posted today Phil ?
It's on the Hi from Essex thread I might be a tad colour blind but sure the bodywork is Brown.😁😁😁
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline Sesman

  • SOHC Master
  • Posts: 2000
    • View Profile
Re: Does this need replacing oval mounting holes?
« Reply #7 on: February 08, 2023, 03:17:13 PM »
Ha, ha. Just been for a peak. Not my cup of tea as they say..😁

How’s the bike coming along. The recent photos show some promise.

Online McCabe-Thiele (Ted)

  • Grogu
  • *
  • Posts: 6393
    • View Profile
Re: Does this need replacing oval mounting holes?
« Reply #8 on: February 08, 2023, 04:50:08 PM »
Hi Phil I'm currently putting the front suspension together but tbh the cold weather slows me down. Once I have fitted the brakes, mudguard & wheel back in I need to turn the bike round on the stand plus turn the bike stand round as well. This is to make fitting the engine easier later in the year.
I need to remove the tank badges etc to get the bodywork off to the painter by the middle of this month.
 
I need much warmer weather then to start on the engine/gearbox internals - I do not want to bit & bob on the engine like I can with frame stuff over the winter.
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline Sesman

  • SOHC Master
  • Posts: 2000
    • View Profile
Re: Does this need replacing oval mounting holes?
« Reply #9 on: February 08, 2023, 05:33:07 PM »
OOI, how do you intend to paint the caliper? I ask simply as the HT paint I used cracked on assembly. I tried and failed a couple of times. In the end I etch primed, mist coated then two top coats, cured in the oven and hey presto it worked.

I was wondering if others had a fail safe solution?

Offline Oddjob

  • SOHC Jedi
  • Posts: 4296
    • View Profile
Re: Does this need replacing oval mounting holes?
« Reply #10 on: February 08, 2023, 05:41:10 PM »
I'll most likely powder coat mine Phil or may go for ceramic coated instead.
Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.

Offline peterengland

  • SOHC Member
  • Posts: 189
    • View Profile
Re: Does this need replacing oval mounting holes?
« Reply #11 on: February 08, 2023, 06:09:10 PM »
I just rattle canned mine and it's been fine ever since!
Suzuki 50
Suzuki GT185
Honda CD175
Yamaha RD350
Honda 50 crunch box
Honda 400/4
Honda 550/4
Honda 750C

Online McCabe-Thiele (Ted)

  • Grogu
  • *
  • Posts: 6393
    • View Profile
Re: Does this need replacing oval mounting holes?
« Reply #12 on: February 08, 2023, 07:34:04 PM »
Painting in February not sensible due to garage temperature.
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

 

SimplePortal 2.3.5 © 2008-2012, SimplePortal