Retrobike Forum Index

It is currently Sun Dec 04, 2016 3:10 am

* Login   * Register * Search  * FAQ

Forum rules


**Classified Rules & Guidance - Feedback - Dispute Procedure - Gold Trader Status - All Adverts Need A Price - 5 Adverts Maximum - Leave Prices In Sold Adverts - No cross posting adverts**



Post new topic Reply to topic  [ 46 posts ]  Go to page Previous  1, 2, 3, 4, 5  Next
Author Message
PostPosted: Sun Oct 06, 2013 6:12 pm 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
User avatar

Joined: Sun Sep 16, 2012 9:59 pm
Posts: 2174
Location: Kent, UK
Swede wrote:
Question... I've downloaded the 1988 Suntour brochure and the XC9000 front mech only came in Ø28mm or Ø28.6mm (see pic), I've also found a picture of an '87 SM800 with an XC9000 front mech. So can I assume that a 28.6 will fit my '87 'dale? I'm thinking that it will probably be ok but...


Hi Swede,

If your seatpost is 27.2mm and the front mech is 28.6mm that would mean a seat tube wall thickness of 0.7mm. I'm not an expert on early Cannondales, but I reckon thats a bit thin for an aluminium seat tube!
Surely it must be 31.8? We already know the catalogue has info missing on XCD6000, so I wouldn't be surprised if the XC9000 info was the same.

Can you measure the saet tube?

Cheers,
Andrew


Top
 Profile  
 
PostPosted: Sun Oct 06, 2013 7:27 pm 
Gold Trader
Gold Trader
User avatar

Joined: Thu Aug 02, 2012 11:48 am
Posts: 977
Location: Somerset
andyz wrote:
Swede wrote:
Question... I've downloaded the 1988 Suntour brochure and the XC9000 front mech only came in Ø28mm or Ø28.6mm (see pic), I've also found a picture of an '87 SM800 with an XC9000 front mech. So can I assume that a 28.6 will fit my '87 'dale? I'm thinking that it will probably be ok but...


Hi Swede,

If your seatpost is 27.2mm and the front mech is 28.6mm that would mean a seat tube wall thickness of 0.7mm. I'm not an expert on early Cannondales, but I reckon thats a bit thin for an aluminium seat tube!
Surely it must be 31.8? We already know the catalogue has info missing on XCD6000, so I wouldn't be surprised if the XC9000 info was the same.

Can you measure the saet tube?

Cheers,
Andrew


Hi Andrew

Since then I've acquired an NOS Ø28mm front mech and there's no way it's going to fit and neither would a Ø28.6mm, so I'm pretty sure I'm looking for a Ø31.8mm but Suntour didn't offer them in 1987 (at least that's what the brochure says...). I got in touch with Melvin to ask him about his SM800 http://www.retrobike.co.uk/forum/viewto ... amp;t=9424 but it’s been sold, so I’m not going to get any info from that anytime soon. You can remove the cage from the clamp by unscrewing the top pivot pin and disengaging the spring; so maybe I could use an XC Pro clamp?


Top
 Profile  
 
PostPosted: Sun Oct 06, 2013 7:53 pm 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
User avatar

Joined: Sun Sep 16, 2012 9:59 pm
Posts: 2174
Location: Kent, UK
Swede wrote:
andyz wrote:
Swede wrote:
Question... I've downloaded the 1988 Suntour brochure and the XC9000 front mech only came in Ø28mm or Ø28.6mm (see pic), I've also found a picture of an '87 SM800 with an XC9000 front mech. So can I assume that a 28.6 will fit my '87 'dale? I'm thinking that it will probably be ok but...


Hi Swede,

If your seatpost is 27.2mm and the front mech is 28.6mm that would mean a seat tube wall thickness of 0.7mm. I'm not an expert on early Cannondales, but I reckon thats a bit thin for an aluminium seat tube!
Surely it must be 31.8? We already know the catalogue has info missing on XCD6000, so I wouldn't be surprised if the XC9000 info was the same.

Can you measure the saet tube?

Cheers,
Andrew


Hi Andrew

Since then I've acquired an NOS Ø28mm front mech and there's no way it's going to fit and neither would a Ø28.6mm, so I'm pretty sure I'm looking for a Ø31.8mm but Suntour didn't offer them in 1987 (at least that's what the brochure says...). I got in touch with Melvin to ask him about his SM800 http://www.retrobike.co.uk/forum/viewto ... amp;t=9424 but it’s been sold, so I’m not going to get any info from that anytime soon. You can remove the cage from the clamp by unscrewing the top pivot pin and disengaging the spring; so maybe I could use an XC Pro clamp?


There are loads of XC pro/comp 31.8mm mechs about on ebay. That would at least keep you going until you find the correct one.
A guy in Poland always has them for sale.
http://www.ebay.co.uk/itm/Vintage-Sunto ... 0986734335
You have to ask him as he doesn't state the size in the advert.

Cheers,
Andrew


Top
 Profile  
 
PostPosted: Sun Oct 06, 2013 7:59 pm 
Gold Trader
Gold Trader
User avatar

Joined: Thu Aug 02, 2012 11:48 am
Posts: 977
Location: Somerset
Anyone got a photo of the top pivot of one of these? Looking at the few photos I've seen I think the cage is riveted on rather than screwed?


Top
 Profile  
 
PostPosted: Wed Oct 09, 2013 11:05 am 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
User avatar

Joined: Mon Jun 07, 2010 4:00 pm
Posts: 959
Location: Hunting down the "foxes" of lincolnshire
Swede wrote:
Anyone got a photo of the top pivot of one of these? Looking at the few photos I've seen I think the cage is riveted on rather than screwed?


I'll try and take a look at mine tonight.

This guy in the states has some interesting stuff:

http://www.ebay.co.uk/itm/vintage-Sunto ... 43c08c01f7

and brakes / thumbies (might be a bit early for you tho)

And


Top
 Profile  
 
PostPosted: Wed Oct 09, 2013 2:35 pm 
Gold Trader
Gold Trader
User avatar

Joined: Thu Aug 02, 2012 11:48 am
Posts: 977
Location: Somerset
Archemist wrote:
Swede wrote:
Anyone got a photo of the top pivot of one of these? Looking at the few photos I've seen I think the cage is riveted on rather than screwed?


I'll try and take a look at mine tonight.

This guy in the states has some interesting stuff:

http://www.ebay.co.uk/itm/vintage-Sunto ... 43c08c01f7

and brakes / thumbies (might be a bit early for you tho)

And


Thanks, spotted this lot today during my morning eBay scan. I'm pretty much there with all the components it's just the brakes and mech to sort. I'm now fairly certain that Suntour did make a 31.8 but they just didn't advertise them, which is going to make finding one fun!


Top
 Profile  
 
PostPosted: Sat Oct 12, 2013 1:16 am 
Dirt Disciple

Joined: Sat Mar 16, 2013 4:25 am
Posts: 28
I have a Suntour XC 9000 front derailleur in 31.8.

I'm in California.

My thread.

It looks a little grungy in the picture, but I have cleaned it up since then.


Top
 Profile  
 
PostPosted: Sat Oct 12, 2013 8:31 pm 
Gold Trader
Gold Trader
User avatar

Joined: Thu Aug 02, 2012 11:48 am
Posts: 977
Location: Somerset
TwigJumper wrote:
I have a Suntour XC 9000 front derailleur in 31.8.

I'm in California.

My thread.

It looks a little grungy in the picture, but I have cleaned it up since then.


That solves that mystery then :D. They did make them but didn't advertise them. Any chance you could send me some more pictures?


Top
 Profile  
 
PostPosted: Sat Oct 26, 2013 2:46 pm 
Gold Trader
Gold Trader
User avatar

Joined: Thu Aug 02, 2012 11:48 am
Posts: 977
Location: Somerset
Sen's front mech has arrived and there's no doubt that it what I've been after :D. It's date stamped 1987 (D), October (J) and I've put some pictures up of it compared to my Ø28mm. But why would Suntour choose not to tell people this? I guess we'll never know.

Anyway all I need now is some parts for the roller cams and I'm finished. I think I'll change the title of the post.


Attachments:
XC9000 front mech.jpg
XC9000 front mech.jpg [ 46.04 KiB | Viewed 160 times ]
XC9000 front mechs.JPG
XC9000 front mechs.JPG [ 105.33 KiB | Viewed 160 times ]
untitled.jpg
untitled.jpg [ 52.15 KiB | Viewed 160 times ]
Top
 Profile  
 
PostPosted: Sat Oct 26, 2013 3:38 pm 
Dirt Disciple

Joined: Sat Mar 16, 2013 4:25 am
Posts: 28
I'm glad I could help!

It was taken off a 1990 StumpJumper M2, by the way.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 46 posts ]  Go to page Previous  1, 2, 3, 4, 5  Next

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 15 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