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PostPosted: Sat Oct 20, 2012 8:06 pm 
Retro Guru

Joined: Tue Oct 16, 2012 4:16 pm
Posts: 1568
Location: NOTTINGHAM
Evening all - I've got a pair of the Delta centre pull calipers (mid 80's) for a build i'm on with. I'm really struggling to understand how the cable is connected (truth is I think the straddles that hold cables to calipers is missing).

Does anyone know if this straddle / connector is a Shimano specific part or can I use something I can off the shelf? If it's the former then I guess these calipers are rendered redundant!

Any input would be appreciated as these calipers look superb on my build.

Thanks all :)


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PostPosted: Sat Oct 20, 2012 8:20 pm 
King of the Skip Monkeys
King of the Skip Monkeys
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Joined: Wed Nov 07, 2007 4:34 pm
Posts: 26154
Location: Moomin Valley
These?

Image

You need the specific clamp thingies - these force the caliper arms onto the rims as the cable is pulled. You get some made or make your own if your handy.

Image


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PostPosted: Sat Oct 20, 2012 9:11 pm 
Retro Guru

Joined: Tue Oct 16, 2012 4:16 pm
Posts: 1568
Location: NOTTINGHAM
Those are the very ones. From those pictures it's the centre section with the cable / connecting bolt and straddle - alas I don't have them. I wish I was handy enough to cobble something together - as I sit here I cant even think how I'd start.

The sections where the straddle slides into each side of a caliper is somewhat engineered with a curved section and lip - looks complicated!

I assume there's nothing comparable that I could purchase?

Thanks for your input - much appreciated.


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PostPosted: Sat Oct 20, 2012 9:53 pm 
retrobike rider
retrobike rider

Joined: Sat May 29, 2010 3:44 pm
Posts: 1508
Location: Leeds
It is a triangular shaped section that is curved to give the braking characteristics. I have some spare. Drop me a pm


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PostPosted: Sat Oct 20, 2012 10:02 pm 
rBoTM Winner
rBoTM Winner
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Joined: Tue Mar 27, 2012 9:28 pm
Posts: 3104
Location: Mansfield Woodhouse, Nott's.
I'd search bike jumbles! The 600AX is a cheap brake at these jumbles and I saw a pair for just £5!!!!

Shimano also made the poor man's AX stuff which was the Adamas, these fetch buttons on ebay, the Cam will fit the 600AX.

http://velobase.com/ViewComponent.aspx? ... c&Enum=117


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PostPosted: Sat Oct 20, 2012 10:28 pm 
retrobike rider
retrobike rider

Joined: Sat May 29, 2010 3:44 pm
Posts: 1508
Location: Leeds
Dura Ace AX new ones here


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PostPosted: Sat Oct 20, 2012 10:34 pm 
Devout Dirtbag

Joined: Mon May 31, 2010 9:10 pm
Posts: 116
Wish I'd thought to post here when I needed one of these! I bought a NOS dura ace ax calliper that was missing this part. Several
cut fingers later, metal filings all over the floor resulted in a lop sided approximation of the delta shaped piece that was missing and mine are now working......kind of!
In hindsight I'd go with the option just posted of $8.95 for the right part!


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PostPosted: Sat Oct 20, 2012 10:41 pm 
Retro Guru

Joined: Tue Oct 16, 2012 4:16 pm
Posts: 1568
Location: NOTTINGHAM
I've sat for hours searching on the www - appears I wasn't looking hard enough or in the right places! Sourced a couple of said parts from a retrobike member so my build can continue as I first envisaged. That has very much made my evening so thanks for everyone's input.

Next time I buy something i'll try and make sure ALL the parts are there![/u]


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PostPosted: Sat Oct 20, 2012 10:57 pm 
Retro Guru
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Joined: Fri Mar 12, 2010 11:24 am
Posts: 354
Location: London
caution. They are truly poor performing brakes ! Had them on my lo pro back in the day and I left more skid marks in my pants than on the road :oops:


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PostPosted: Sat Oct 20, 2012 11:39 pm 
retrobike rider
retrobike rider

Joined: Sat May 29, 2010 3:44 pm
Posts: 1508
Location: Leeds
argonsixar wrote:
caution. They are truly poor performing brakes ! Had them on my lo pro back in the day and I left more skid marks in my pants than on the road :oops:


It is all in the setting, they need quite a big gap block to wheel (enough to get wheel out with inflated tyre) for the ramps on the roller cams to fully work. Then they perform as well as any other any other 80s road brake.


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