Ducati Sporting Club
Home Calendar Gallery Membership Online Shop DSC Blogs Extras
Go Back   Ducati Sporting Club > General > Idle Chat
Reload this Page broken bolt...grrrr
Forum Home Register FAQ Search Forum Recent Posts Mark Forums Read

Idle Chat Still needs to be clean and of value to the club.

Reply
 
Thread Tools Display Modes
  #1  
Old 12-Jun-2013, 09:14 PM
kiwicoops's Avatar
DSC Member kiwicoops kiwicoops is offline
DSC Club Member
Mille
Bikes: M620ie, DD583R #30
 
Posts: 198
Join Date: May 2009
broken bolt...grrrr

Anyone got a brand of extractor kit they would recommend? Got a broken 7mm exhaust stud on one of the kids vespa's

cheers pete


"Nearly all men can stand adversity, but if you want to test a man's character, give him power". Abraham Lincoln ...53 horse power should do it
Reply With Quote
  #2  
Old 13-Jun-2013, 05:32 AM
dunlop0_1's Avatar
dunlop0_1 dunlop0_1 is offline
Registered Forum User
Big Twin
 
Posts: 1,564
Join Date: May 2009
Never sucessfully removed one Pete. Always had to drill and tap or helicoil. Definitely M7? seems an odd size, usually 6 or 8.
Reply With Quote
  #3  
Old 13-Jun-2013, 07:26 AM
ChrisBushell's Avatar
DSC Member ChrisBushell ChrisBushell is offline
DSC Club Member
Big Twin
 
Posts: 1,600
Join Date: Oct 2004
Mood: Im Going to Italy soon!
If you have got any of the stud showing, then a stud extractor and a lot of heat prior to trying to turn it may work.

Safest bet is remove barrel/head (2/4 stroke option) and give to an engineering shop. They will remove on a mill, using an end mill that wont wander like a normal drill.

Bad news is if you use an Eziout and it snaps of (the small ones are very brittle) then the only way to get it out is with spark erosion.

I learn't these lessons the hard way!


Chris
Reply With Quote
  #4  
Old 13-Jun-2013, 12:24 PM
dunlop0_1's Avatar
dunlop0_1 dunlop0_1 is offline
Registered Forum User
Big Twin
 
Posts: 1,564
Join Date: May 2009
Also of you do not have access to a helicoil etc.

Drill the old stud out M7
Drill the hole to 8.5
Tap the hole to M10 with a taper tap only
File an M10 bolt to a blunt point.
With thread lock screw the bolt in tight
Cut the bolt off at face level
Drill and tap the new bolt to M7

Bit long winded but really does work if you have a limited budget or access to tools.

Reply With Quote
Reply
  
Thread Tools
Display Modes
Postbit Selector
Switch to Vertical postbit Use Vertical Postbit

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Recent Posts - Contact Us - DSC Home - Archive - Top
Powered by vBulletin 3.5.4 - Copyright © 2000 - 2017, Jelsoft Enterprises Ltd. - © Ducati Sporting Club - All times are GMT +1. The time now is 10:27 PM.