Retrobike Forum Index

It is currently Tue Sep 25, 2018 11:20 am

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 13 posts ]  Go to page 1, 2  Next
Author Message
PostPosted: Fri Sep 21, 2018 6:16 pm 
Geoff Capes

Joined: Wed Dec 11, 2013 9:41 pm
Posts: 120
Not sure to call it a gap in design or a flaw or just "old-style"... but just realized how weird is the design of the jockey weels support on nuevo gran sport RD...

Notice the rounded sides are inwards ! - opposite as all the rd's I know where the rounded shape is facing outwards the jockeys.

I've was close to dissasemble it all when had a look at velobase and found this is as per design ...

Quite interesting. Does any one know any reason for this ??


Attachments:
39EB7614-FD7A-433F-B5C5-48F5C97F3FCC.jpeg
39EB7614-FD7A-433F-B5C5-48F5C97F3FCC.jpeg [ 258.78 KiB | Viewed 251 times ]
Top
 Profile  
 
 Post subject: Re:
PostPosted: Fri Sep 21, 2018 6:36 pm 
Retro Guru

Joined: Sun Mar 01, 2009 2:49 pm
Posts: 2854
Location: Boiling in a Bivvy Bag
Do you mean the cage? - apologies if I've missed the point.
Having a steel cage on the Gran Sport kept the cost down, and I guess shaping it like that is a bit more attractive than the usual pressed steel cages. Maybe it offers a bit of structural rigidity too.

A couple of other mech's did it as well, Roto etc
http://www.disraeligears.co.uk/Site/Rot ... lleur.html


Top
 Profile  
 
PostPosted: Fri Sep 21, 2018 7:10 pm 
Geoff Capes

Joined: Wed Dec 11, 2013 9:41 pm
Posts: 120
yes, sorry, I was refering to the cages. But mind the original gran sport, it's "as usual" design (rounded shaped facing out)


Attachments:
images-cambicampagnolo-gransport60-450x600.JPG
images-cambicampagnolo-gransport60-450x600.JPG [ 49 KiB | Viewed 229 times ]
Top
 Profile  
 
 Post subject: Re:
PostPosted: Fri Sep 21, 2018 7:51 pm 
Retro Guru

Joined: Sun Mar 01, 2009 2:49 pm
Posts: 2854
Location: Boiling in a Bivvy Bag
I suspect the original was a much more costly affair to produce, the cage being forged or cast as opposed to pressed - and all that luscious chroming/polishing..

I've a lot of affection for '70s GS though, unpretentious and functional (with great bearings!). A very satisfying groupset :)


Top
 Profile  
 
 Post subject: Re:
PostPosted: Fri Sep 21, 2018 8:26 pm 
GOLD | PoTM | Rider | rBOTM
GOLD | PoTM | Rider | rBOTM
User avatar

Joined: Tue Feb 26, 2013 6:26 pm
Posts: 22645
Location: 54 Festive Road Winchcombe GLOUCS Yarp...
Lovely stuff.


Attachments:
EAACD000-3A57-4076-90B3-074625261F37.jpeg
EAACD000-3A57-4076-90B3-074625261F37.jpeg [ 391.94 KiB | Viewed 206 times ]
Top
 Profile  
 
 Post subject: Re:
PostPosted: Sat Sep 22, 2018 10:34 am 
Retro Guru
User avatar

Joined: Mon Sep 24, 2012 9:10 pm
Posts: 1031
Quote:
I suspect the original was a much more costly affair to produce, the cage being forged or cast as opposed to pressed


Exactly. And the price-point pressed steel cage plates on the Nuovo Gransport being 'inside out' makes functional sense at the expense of aesthetics, because you don't want the rivets of the moving chain fouling on the sharp edges of the plates.


Top
 Profile  
 
PostPosted: Sat Sep 22, 2018 11:32 am 
Old School Grand Master
User avatar

Joined: Fri Oct 14, 2011 8:41 pm
Posts: 9354
Location: Cumbria
Nobody bought them BITD as they were way more expensive than Jap offerings at the time. Viking brought out a fully GS equipped bike, the Severn Valley, but I guess they bought the kit in bulk?


Top
 Profile  
 
 Post subject: Re:
PostPosted: Sat Sep 22, 2018 11:40 am 
Retro Guru
User avatar

Joined: Mon Sep 24, 2012 9:10 pm
Posts: 1031
The front mech was OK. Almost indistinguishable from the earlier NR mechs without the holes in the cage. I've seen more than one 'seventies' retrobike with an '80s Nuovo Gransport front mech mis-identified as an NR.


Top
 Profile  
 
 Post subject: Re:
PostPosted: Sat Sep 22, 2018 12:17 pm 
Geoff Capes

Joined: Wed Dec 11, 2013 9:41 pm
Posts: 120
Thanks. Good to know ! Makes sense as this was mounted in a Colnago Sport from the 70's I recently bought, with universal brakes ....


Top
 Profile  
 
 Post subject: Re: Re:
PostPosted: Sat Sep 22, 2018 1:36 pm 
Retro Guru

Joined: Sun Mar 01, 2009 2:49 pm
Posts: 2854
Location: Boiling in a Bivvy Bag
The History Man wrote:
Lovely stuff.

TT'er Sue Fenwick certainly loved her Raleigh Gran Sport, and did pretty well on it!
If you click back 6 pic's there's a nice colour photo of them both in action.
http://www.ttlegends.org/women-cyclists ... 24734&t=tc


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 13 posts ]  Go to page 1, 2  Next

All times are UTC [ DST ]


Who is online

Users browsing this forum: Chrisfromglossop, keithglos and 29 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