1953/55 Campagnolo Gran Sport rear der - Sunday sharing

Jamiedyer

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I was speaking to a an older freind in Glasgow a couple of months ago, just general bike chat type thing at a family get together. He has been keeping an eye out for a Flying Scot for me for a long while and we were talking about a few of the old rides.
He was talking of his flying Scot his dad bought for him from his dads good mate who used to work for them. His dad had one and my freind had his for many, many years. He sold it in the late eighties/early nineties to replace it with a Mercian or Holdsworth.
Anyway I digress, but he said to me that he still had the Campag der that his dad put on it in the 50's. He said it was one of the first type and was expensive in the day as it was the same or very similar to what Coppi had won the world champs with in 53. He said it was in a bag, somewhere in his shed. He had moved a couple of times and cleared out things but unless the wife had thrown out the bag, which could be possible, then it should be there somewhere.
My fatherinlaw came to visit this weekend and on arrival gave me a dirty tesco bag and said' thats from Norrie'. Upon opening it I found the said Gran Sport component.
I dont really know too much about it other than general Gran Sport info, or even if the above is correct, but its in very good condition for its age and works perfectly :D The chrome, yes its chromed, is wearing thin but a good polish should bring it back to reasonable, or maybe even a rechrome. I polished a small section around the jockey wheel and it came up very well. The surface rust you can see in the pics is very much just that, surface rust from very small pinpricks.
Its certainly a bit of history and extremely well made. I found another the same for sale and they were asking crazy money, not that that matters as its not really mine to sell, but maybe to restore. 8)
I must be getting old now as I find myself really interested and enthused by what is essentially a rear mech.
Just thought I would share a nice bit of kit with people who may (or may not) appreciate it.
If any body knows any more then I would be grateful to hear.
Cheers
Jamie

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Do you have a suitable bike you can bolt it on to? Should look lovely when polished up.

What's going on with those jockey wheels though? Look a bit worn, there's no teeth! :) Talking of which though, are those bearings in the jockey wheels? I've only ever seen those sleeve things on any of mine, presumably the sleeves are a newer invention?
 
Several versions on show here -

http://velobase.com/ListComponents.aspx ... a54f3c8c63

The original early 'Coppi' model had larger pivot bolts and cage differences.

The jockey wheels on early mechs of many brands were smooth with ball bearings. Very free running.

The Gran Sport mechs, front and rear, were the most popular upgrade for most people when trying to improve their bikes. The rear mechs sold for £4.00 for donkey's years! I sold a bagfull of GS parts at a jumble last year.
 
The earlier mechs with the holes in the rollers had bronze arms and castings. Later the arms were chrome plated steel with replacable bronze bushes. The depth of the "dust cap" bearing plate between the bottom casting and the cage got successively wider to afford a larger bearing surface.
Compared with other makes of the time GS could be relied upon to work in the wet, and was difficult to damage. We always set the down tube gear lever about 30 degrees back for the top gear, to get the hand over the top of the lever to control the downward gear change. Much better than finger and thumb.
 
I use one of these mechs on my Carlton Flyers, still shift and works beautifully.
 
jCymbal":1azakniu said:
Lovely piece of bike jewelry that's what it is. 8)

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I agree!

I notice the mech in the first post has the cable adjustment, making an earlier version, certainly 1950s I would have thought.
 
Info

Hi Guys
Thanks for all the info.
I do realise that Gran Sport covered quite a span of time. This is definately mid fifties and should come up well.
I dont have a frame to hang it on at the moment, or the rest of the gruppo, but maybe this is the the start of a new project :wink:
Thanks and keep it coming guys.
All the best
Jamie
 
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