Retrobike Forum Index

It is currently Tue Nov 19, 2019 10:16 pm

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 19 posts ]  Go to page 1, 2  Next
Author Message
 Post subject: Remove broken dustcap
PostPosted: Sat Jun 08, 2019 6:58 pm 
Old School Hero
User avatar

Joined: Tue Jun 24, 2014 1:13 pm
Posts: 217
Location: London
Hi guys,

Any suggestions on how to remove a broken dustcap from the crank?
It's screwed in the pedal body, only the external part is completely gone, there is only the threaded bit, which 'clogs' the thread on the pedal.
I'm at loss...

Thanks


Top
 Profile  
 
PostPosted: Sat Jun 08, 2019 8:09 pm 
Old School Grand Master
User avatar

Joined: Fri Oct 14, 2011 8:41 pm
Posts: 9718
Location: Cumbria
The dust cap cap covering the crank bolt? Just can't picture it in my mind


Top
 Profile  
 
 Post subject: Re:
PostPosted: Sun Jun 09, 2019 12:55 am 
r.B.o.T.M. & P.o.T.M. Winner
r.B.o.T.M. & P.o.T.M. Winner
User avatar

Joined: Thu Nov 22, 2007 10:51 am
Posts: 2411
Location: Camel Land
Pics please as it’s all a bit confusing a crank dust cap suddenly in a pedal...


Top
 Profile  
 
 Post subject: Re:
PostPosted: Sun Jun 09, 2019 9:05 am 
Devout Dirtbag

Joined: Fri Aug 24, 2018 9:48 am
Posts: 132
Location: Copenhagen, Denmark
I am guessing you mean that the broken cap is 'clogging' the thread at the bottom bracket end, not the pedal end, of the crank?

It sounds like it is a plastic dustcap, which the 'face' has broken off, leaving the threads in the crank (this happened to me, with 25 year-old Shimano crank dustcaps).

You need something to grip it from the inside - I used a tool I have for opening/closing quick links on chains - a bit like pliers, but with points sticking outwards at the ends. I stuck it in, opened the jaws, and they gripped the inside edge of the cap. Then turn anti-clockwise, and they were out.

Or have i misunderstood?


Top
 Profile  
 
 Post subject: Re:
PostPosted: Sun Jun 09, 2019 9:25 am 
Retro Guru

Joined: Sat Oct 25, 2008 12:17 am
Posts: 852
I had this on a bike I bought and ended up melting it out with a bit of heat


Top
 Profile  
 
 Post subject: Re:
PostPosted: Sun Jun 09, 2019 11:20 am 
Devout Dirtbag

Joined: Fri Aug 24, 2018 9:48 am
Posts: 132
Location: Copenhagen, Denmark
Heat will work, but might damage the finish - I removed a plastic bottom bracket, by melting it out, but was going to repaint anyway.


Top
 Profile  
 
 Post subject: Re:
PostPosted: Mon Jun 10, 2019 9:34 am 
Old School Hero
User avatar

Joined: Tue Jun 24, 2014 1:13 pm
Posts: 217
Location: London
Sorry, it was a bit optimistic of me, trying to explain it in English.

This should help:

Image


Top
 Profile  
 
 Post subject: Re:
PostPosted: Mon Jun 10, 2019 11:13 am 
Devout Dirtbag

Joined: Fri Aug 24, 2018 9:48 am
Posts: 132
Location: Copenhagen, Denmark
Super fine chisel, pointy tools and patience. You are going to need to take that out, but by bit. Or melt it out and ruin the cranks. Can’t see any other options.


Top
 Profile  
 
PostPosted: Mon Jun 10, 2019 11:19 am 
Old School Grand Master

Joined: Mon Feb 11, 2008 9:42 am
Posts: 3473
If it's plastic they are (eventually) fairly easy to lever/crack/chisel out.

If it's aluminium you need to expand your english vocabulary. You'll need more swears.
Could possibly do something with a dremel and a peg spanner?

(Unless there is no corrosion at all?)


Top
 Profile  
 
 Post subject: Re:
PostPosted: Mon Jun 10, 2019 11:26 am 
Old School Hero
User avatar

Joined: Tue Jun 24, 2014 1:13 pm
Posts: 217
Location: London
Luckily is plastic.

I tried removing it bit by bit with the smallest flat screwdriver I own, but it doesn't work.

I will try with a smaller chisel...


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 19 posts ]  Go to page 1, 2  Next

All times are UTC [ DST ]


Who is online

Users browsing this forum: nonowt and 36 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

About Us

Follow Retrobike

Other cool stuff

All content © 2005-2015 Retrobike unless otherwise stated.
Cookies Policy.
bikedeals - the best bike deals in one place
FatCOGS - Fat Chance Owner's Group

Powered by phpBB® Forum Software © phpBB Group