Retrobike Forum Index

It is currently Sat Dec 10, 2016 1:53 pm

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 5 posts ] 
Author Message
PostPosted: Mon Jun 25, 2012 7:07 pm 
Dirt Disciple

Joined: Mon Jun 25, 2012 6:59 pm
Posts: 25
Location: Southampton
Hello all,

I'm trying to restore a 1998 Sunn Xircuit Plus (the polished and blue one) back to something resembling its former glory.

And I have a question:

What was the original fork length of this bike?

Mine has a pair of silver grey Bomber Z3 Lights on that I am 99% certain are not original. The Bombers are 44cm from the top of the crown to the axle and I have never been convinced that was right.

I would have thought 42 cm was more likely. Am I right?


Top
 Profile  
 
 Post subject:
PostPosted: Mon Jun 25, 2012 8:39 pm 
Retro Guru
User avatar

Joined: Tue Jul 15, 2008 7:20 am
Posts: 1823
Location: Austria
here's a copy of the 98 Sunn brochure:

http://www.le-jurassien.com/sunn/catalo ... mmes98.php

ref. to that brochure the original fork's a Obsys 55 which has a meassured 420 mm from axle to top of crown.

nice frame, show us some pics. :)


Top
 Profile  
 
 Post subject:
PostPosted: Mon Jun 25, 2012 9:51 pm 
Dirt Disciple

Joined: Mon Jun 25, 2012 6:59 pm
Posts: 25
Location: Southampton
Thanks for the info.

I'll post a pic up in the readers' bikes section once I get round to taking a photo of it.

I knew that it was originally a fairly good bike, but I'm afraid to say that various components have been 'downgraded' over the years from the original spec. I'll also weigh it tomorrow to see how far from the original 10.8 kgs it is now.

I don't have the budget to go out and make it as nice as I would like, but there are a few things that need doing to it.

Currently the drop from saddle to handlebars is far too great and very uncomfortable, so I'm looking at getting some new forks (with an uncut steerer tube) to get the handlebars up to where I need them to be. Unless anyone can recommend a handlebar with a 4" rise?

They're not fully legit, but I'm considering a pair of On-One Cro-Mo rigid forks - unless someone has some Obsys or Pace RC31s they want to give away?


Top
 Profile  
 
 Post subject:
PostPosted: Mon Jun 25, 2012 11:42 pm 
MacRetro rider
MacRetro rider
User avatar

Joined: Sat May 22, 2010 7:25 pm
Posts: 4977
Location: Edinburgh
It will look like this with On-One forks on it. It certainly saves a lot of weight. This is a Total but is the same frame as the Xircuit but with a soft tail rear triangle. It should be 12Kg and with all the components upgraded to XT and the On-One forks it is coming in at 11.3Kg.

Image


Top
 Profile  
 
 Post subject:
PostPosted: Tue Jun 26, 2012 4:24 pm 
Dirt Disciple

Joined: Mon Jun 25, 2012 6:59 pm
Posts: 25
Location: Southampton
For pictures of the bike as it is now

http://www.retrobike.co.uk/forum/viewtopic.php?t=208798

http://www.retrobike.co.uk/gallery2/v/u ... ms/jsbean/


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: CristiRD, keitht, sandgrown and 14 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