Results 1 to 8 of 8
  1. Collapse Details
    Rear uprights - bearing carrier clearance
    #1
    Default
    I'm starting a CBR1000F buggy build and planing to use a Honda Civic trans and short CV axles with the Civic DX front wheel bearings and hubs.

    I have attached a photo of the outer bearing measurement and the specs for the tubing that is a close match for the carrier.

    So I'm no machinist, and my Harbor Freight digital caliper shows only 2 digits...

    If the caliper is accurate, the bearing OD is 2.87". The specs for the tubing say 2.876" ID.

    Is .006" enough clearance to slide the bearing into the carrier/upright or would I have to get some machine work done ?

    The wheel bearings included a clip retainer that fits in a groove.

    Do I need to have a groove cut to hold the bearing in the carrier ?






    Sent from my SM-J700T using Tapatalk
    Added OD measurement photo in inches.
    Reply With Quote
     

  2. Collapse Details
    Re: Rear uprights - bearing carrier clearance
    #2
    Keeper of the Asylum K-fab's Avatar
    Join Date
    Jun 2006
    Location
    Scottsdale, AZ. 10.9 miles from the trailheads
    Posts
    10,858
    Default
    More than likely the bearing is 2.875.
    Stick the tube in the oven at 350 for 10 min and see if the bearing will slip in.
    A groove is recommended.
    Where are you? I might be able to do some quick machine work if you cover shipping...
    Sand is for fast cars
    Dirt is for fast drivers



    Yellow Dog Racing
    Reply With Quote
     

  3. Collapse Details
    Re: Rear uprights - bearing carrier clearance
    #3
    Duck in a Tux jimmyg's Avatar
    Join Date
    Sep 2016
    Location
    Bendigo AUS
    Posts
    368
    Default
    Please don't burn your self and if the bearing fits cool things down fast so you don't heat soak you bearing to much.

    And please don't burn your self! Safety first.
    All dressed up and waiting for the beer to arrive.
    Reply With Quote
     

  4. Collapse Details
    Re: Rear uprights - bearing carrier clearance
    #4
    Default
    Quote Originally Posted by K-fab View Post
    ...
    A groove is recommended.
    Where are you? I might be able to do some quick machine work if you cover shipping...
    Thanks for the offer !
    I am in central Alabama, east of Birmingham so I will try to find some place locally to cut me a couple of grooves.

    I will go ahead and get some tube on order.

    Assuming the groove would be in line with the outer edge of the bearing... How is the inner edge of the bearing retained, with a step (?)

    I may need to turn the tube ID a little to make the bearing slip in and rest against an inner stop.



    Sent from my SM-J700T using Tapatalk
    Reply With Quote
     

  5. Collapse Details
    Re: Rear uprights - bearing carrier clearance
    #5
    Default
    Quote Originally Posted by jimmyg View Post
    ...And please don't burn your self! Safety first.
    Yah, parts are always hotter or sharper than they look.

    Thanks !

    Sent from my SM-J700T using Tapatalk
    Reply With Quote
     

  6. Collapse Details
    Re: Rear uprights - bearing carrier clearance
    #6
    Default
    Good news ! I found a local machine shop and think I can get my machine work started.

    I did a mock-up today to see if I have enough detail to make a shop drawing and realized I need advice on the clearances for a pesky c-clip to hold the bearing in place.

    Here are some photos with a few dimensions.

    Can someone suggest how much space should be provided between the bearing carrier pipe end and the spindle lugs or backing plate to work that c-clip into place ?

    Thanks !




    Sent from my SM-J700T using Tapatalk
    Last edited by gegcorp2012; 01-25-2021 at 08:37 PM.
    Reply With Quote
     

  7. Collapse Details
    Re: Rear uprights - bearing carrier clearance
    #7
    Keeper of the Asylum K-fab's Avatar
    Join Date
    Jun 2006
    Location
    Scottsdale, AZ. 10.9 miles from the trailheads
    Posts
    10,858
    Default
    Without trying to be a smart ass in my answer, you just need "enough" clearance so things don't hit.

    Those are some pretty beefy parts so flex will be minimal but I'd shoot for at least .050", er, about 1.5mm (I see your drawing is in metric).

    As long as the spindle is able to bottom out against the bearing and nothing else, you'll be good. Looks like it's gonna be a tight fit.
    Sand is for fast cars
    Dirt is for fast drivers



    Yellow Dog Racing
    Reply With Quote
     

  8. Collapse Details
    Re: Rear uprights - bearing carrier clearance
    #8
    Default
    Thanks @K-fab ,

    I use metric because its easier on my eyes and the parts Im building around are Honda.

    The tubes are about 6mm longer than the minimum space taken by the bearing and snap ring, so I was just puzzled about how to get the snap ring out

    I watched some repair videos last night and see the way they service the stock Honda bearings is to take the upright assembly off, then press out the hub. That gives access to the snap ring, which can be removed so the bearing can be pressed out.

    I will follow up with my local machine shop and make sure theres enough meat to hold the clip in.

    It's been a slow start working from the wheels inward, but I can see why it needs to be done that way - causes focus on the details !

    Sent from my SM-J700T using Tapatalk
    Reply With Quote
     

Similar Threads

  1. piranha rear with bearing carrier
    By Speedybug24 in forum Piranha
    Replies: 22
    Last Post: 01-17-2012, 03:15 PM
  2. Help with rear wheel bearing carrier
    By Airwolf450 in forum Driveline
    Replies: 2
    Last Post: 06-11-2010, 09:56 PM
  3. rear hub bearing carrier
    By Stomper in forum Suspension - Wheels & Tires
    Replies: 12
    Last Post: 10-30-2009, 10:32 AM
  4. Rear Axle bearing carrier
    By sega702 in forum Driveline
    Replies: 3
    Last Post: 06-22-2008, 05:56 PM
  5. Rear bearing carrier fabrication
    By Plastic Fork in forum Driveline
    Replies: 3
    Last Post: 04-01-2006, 10:17 AM

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •