Retrobike Forum Index

It is currently Sun Dec 04, 2016 12:59 am

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 8 posts ] 
Author Message
PostPosted: Thu Mar 21, 2013 2:08 pm 
Gold Trader
Gold Trader
User avatar

Joined: Wed Sep 02, 2009 10:05 pm
Posts: 2264
Location: Virginia, USA
Can someone please confirm the thread pitch for inner chainring bolts? I know they're size M8 and I believe the thread pitch is 0.75, but I need confirmation please. And if you're wondering why I need to know the thread pitch rather than just ordering a set of inner chainring bolts from a reputable bike shop, I need an extra long (20mm) bolt to use with a set of Sampson cranks and that length is not readily available.

Thanks in advance for the help.


Top
 Profile  
 
PostPosted: Thu Mar 21, 2013 9:00 pm 
Newbie

Joined: Tue Oct 23, 2012 8:42 pm
Posts: 5
Pitch is indeed 0.75.


Top
 Profile  
 
PostPosted: Thu Mar 21, 2013 9:12 pm 
Gold Trader
Gold Trader
User avatar

Joined: Wed Sep 02, 2009 10:05 pm
Posts: 2264
Location: Virginia, USA
Thanks! Now for the impossible task of finding one 20mm long.


Top
 Profile  
 
PostPosted: Fri Mar 22, 2013 1:11 pm 
Retro Guru

Joined: Tue Dec 04, 2012 6:15 pm
Posts: 523
Any good:

http://www.namrick.co.uk/acatalog/Home_ ... 2__37.html

I've used Namrick many times in the past for sourcing obscure bolts for old cars


Top
 Profile  
 
PostPosted: Fri Mar 22, 2013 3:42 pm 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
User avatar

Joined: Sat Jun 20, 2009 3:45 pm
Posts: 5261
Location: Birmingham
none in stock at the moment, but these guys will custom make them to your requirements, aint gonna be cheap mind you

http://oscommerce.tibolts.co.uk/product ... cts_id=168

does it have to be 20mm too, as 18 mm is relatively easy to get hold of?


Top
 Profile  
 
PostPosted: Fri Mar 22, 2013 11:40 pm 
Retro Guru
User avatar

Joined: Fri Jun 12, 2009 11:58 pm
Posts: 801
Location: Quantocks
sjs cycles. use them for making up tandem chainsets.


Top
 Profile  
 
PostPosted: Sat Mar 23, 2013 12:17 pm 
Gold Trader
Gold Trader
User avatar

Joined: Wed Sep 02, 2009 10:05 pm
Posts: 2264
Location: Virginia, USA
Thanks for the help fellas. I'll try Namrick, but they don't specify the thread pitch for the M8 bolts. I'll search SJS next. I already tried Toronto Cycles without any luck.


Top
 Profile  
 
PostPosted: Sat Mar 23, 2013 12:19 pm 
Gold Trader
Gold Trader
User avatar

Joined: Wed Sep 02, 2009 10:05 pm
Posts: 2264
Location: Virginia, USA
Bikepro says it is supposed to be 20mm. I'll see if maybe 18 will work.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 8 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: boswell, mechanical_vandal, rc200ti and 30 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