How to tackle a new seat for this bike
Results 1 to 6 of 6
  1. #1
    Junior Member Jarrod164's Avatar
    Join Date
    May 2019
    Location
    Edmonton, Canada
    Posts
    13

    How to tackle a new seat for this bike

    Hey all, looking for some help/suggestions on how to handle putting a seat on this bike. It came with a bobber (?) seat but I want a cafe racer style. Ideally I would like to tuck in the wiring between the seat and the frame, if I were to get some form of bracket to hold the seat up above the frame. The cardboard box was what the PO wanted, to build a tray to hold everything (it would sit higher attaching to the tank bolt).
    When I was searching around, it seems everyone does these seat hoops, but I do not have any holes for the seat hoops to attach to, I just have these tabs with 2 holes.

    I should mention this is a 1980 CB400. I'm wondering if what I'm looking at in the 1st image is how they were made and I'm missing the rear piece. The holes don't look welded on (but I'll check again when I'm home).




    Attached Thumbnails Attached Thumbnails How to tackle a new seat for this bike-tggzgom.jpg  
    Last edited by Jarrod164; 05-15-2019 at 03:48 PM.

  2. #2
    Senior Member Polish's Avatar
    Join Date
    Oct 2017
    Location
    Sudbury, Ontario
    Posts
    331
    Best advice is to look at videos and pics off the internet. Dime City Cycles have a video making its own, witch i base my seat off with fiberglass. Classic Octane took measurements and sent them to a company and also has lots of videos about frame hoop, battery box and seat mount. For the bold has the same videos as well.

    You don't have to stick with the PO brackets, do it once and do it right. The more you look around, the more you'll know what you like and want. I have 2 seats myself, 1 cafe i made and the original i trimed down, reshaped and got upholstered, all using the original machanisim to secure them.

    Let me know if you need more...
    JL
    1979 CB 400 T (Cafe Racer)

  3. #3
    Senior Member Polish's Avatar
    Join Date
    Oct 2017
    Location
    Sudbury, Ontario
    Posts
    331
    The only thing I would do differently is to have one seat for both, just have a small cowl to put on top of the back of the 2 seater to make it cafe.
    JL
    1979 CB 400 T (Cafe Racer)

  4. Remove Advertisements
    HondaTwins.net
    Advertisements
     

  5. #4
    Junior Member Jarrod164's Avatar
    Join Date
    May 2019
    Location
    Edmonton, Canada
    Posts
    13
    The problem is, I don't think the PO welded the 2 hole pieces there (or at least it doesn't look welded). It looks to me like the CB400 comes that way, and they simply removed the rear seat and any rear frame part but it's really tough to tell and hard to search. This parts diagram even looks different. I'll have a closer inspection.
    https://www.bikebandit.com/oem-parts...151810sch18131

    I don't know how to weld or make anything out of fiberglass but I will explore ways to make a bracket to hold a seat up as well as 3D printing a seat pan.

  6. #5
    Senior Member Polish's Avatar
    Join Date
    Oct 2017
    Location
    Sudbury, Ontario
    Posts
    331
    I didn't know how to do fiberglass either, took me a couple times. The first time I made it too short, you have to lay the fiber way pass your template. You don't have factory manual? There is a topic about it. Let me see. The holes at the end of your frame are not what you should have, look at the picture you sent carefully. There should be 1 big hole for the flashers.

    Here it is:

    https://www.hondatwins.net/forums/61...-cb-cm400.html
    The first guy has a link. If it doesn't work, send a PM to dtsmjr8dan (a guy from Winsord, ON) to send one to you. You need a manual.
    Last edited by Polish; 05-15-2019 at 04:27 PM.
    JL
    1979 CB 400 T (Cafe Racer)

  7. #6
    Super Moderator longdistancerider's Avatar
    Join Date
    Oct 2011
    Location
    Vancouver Washington (text 408-239-9580)
    Posts
    21,614
    Her's a couple of stock frame pictures
    How to tackle a new seat for this bike-gedc2263-001.jpg How to tackle a new seat for this bike-gedc2264-001.jpg
    Jim O'Brien
    1979 CM400T "road bike" modified for travelling
    1978 CB400T1 restored
    1972 CL350 survivor restoration


    https://www.hondatwins.net/forums/22...d-attempt.html and https://www.hondatwins.net/forums/1-...r-attempt.html
    Road Trip https://www.hondatwins.net/forums/11...here-i-go.html or "where's Jim now?"
    Member Map https://www.hondatwins.net/forums/dcMembermap.php

Sponsored Links

Posting Permissions

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

Similar Threads

  1. Questions before I tackle the Carbs - 78 CB400
    By troy in forum Fuel Supply and Carburation
    Replies: 10
    Last Post: 03-15-2019, 06:09 PM
  2. Can/Should I tackle a top end rebuild?
    By Vintage914racer in forum Engine Discussion
    Replies: 8
    Last Post: 02-22-2016, 08:55 PM
  3. Can/Should I tackle a top end rebuild?
    By Vintage914racer in forum Engine Discussion
    Replies: 2
    Last Post: 02-19-2016, 10:28 PM
  4. How to tackle barn find 1976 cb360t rebuild?
    By djfob in forum Miscellaneous Discussion
    Replies: 13
    Last Post: 05-24-2015, 12:16 AM
  5. Time to tackle the CD175...
    By mmiiiiiz in forum Project Logs
    Replies: 5
    Last Post: 10-17-2011, 04:04 AM