Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.


Tools for bottom bracket on 1970s Sekine
#1
Hi folks! I was directed here by the folks over at r/bikewrench as I hear you are a helpful lot! I have a beautiful old Sekine which I think after a little research is a SHC 271 from the mid seventies. Unfortunately I was in a pretty nasty accident last year and it was out of commission for a while. I was using it indoors on my trainer and slowly going about repairs, getting it road ready again when I noticed the bottom bracket is super loose. https://imgur.com/a/vSZzAD6 (images from the reddit post)

I have never overhauled a bottom bracket before but I figure I should give it a shot especially as all the shops in my area are booked for months. I have an idea of what I need to do but the cups don't look like any others I have seen in my research. I took some up close pictures and they look like they use a hook spanner like for the lock ring but I cant find any other examples of it anywhere. Does anyone know what tool I should get for these cups?

I am getting a hook spanner and crank puller and want to get whatever other tool/wrench I will need to do the job right.

Lock Ring & Cup (Drive side Cup can be seen in Imgur post)

   

Lock Ring on the Cup

   
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
Post-Ride Nutrition
Yesterday 01:16 PM
find a cycling buddy?
06-20-2025 03:17 PM
First long distance ride..
06-19-2025 09:06 PM
How often check or change mechanical dis...
06-19-2025 08:59 PM
Pre Ride Food Intake
06-19-2025 07:22 AM
New Member
06-19-2025 07:20 AM
Attack // Force tire style narrow front ...
06-19-2025 12:27 AM
Pros & Cons of presta valve vs schrader ...
06-19-2025 12:16 AM
1987 Tommaso Alloy lugged frame
06-18-2025 09:05 PM
Thoughts on paceline riding
06-18-2025 09:56 AM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. Flowrider
17 posts
no avatar 2. GirishH
16 posts
no avatar 3. Criminal
16 posts
no avatar 4. rydabent
15 posts
no avatar 5. SPINMAN
13 posts