Shimano Ultegra/600 downtube shifter issue.

[jimo746]

All you need are two flat backed washers instead of the curved washers that will fit onto the existing frame shifter mounts to get the shifters to fit. No drilling, cutting or hacking required. I can post up some photos later to explain if needed.

Do you mean like the ones below?

Shimano Dura-Ace SL-7800 Lever Boss Cover

For use with Shimano Dura-Ace SL-7800 10 speed shifters. This Lever Boss Cover can also be used on the following shifters: - Shimano Dura-Ace SL-BS77 - Shimano 600 Ultegra SL-BS64 - Shimano SL-BS50 - Shimano Dura-Ace SL-7900 - Shimano Dura-Ace SL-7700 - Shimano Dura-Ace SL-7402-8FCAI - Shimano...

www.sjscycles.co.uk

It does say they're compatible with 600 SL-6400 shifters, amongst others.

 

[rikster]

That's the ones. They fit onto the existing frame mounts and then the shifter fits on top. The photo shows why you can't get the existing frame mounts off as they're screwed through from each side. You have to use a 7mm spanner on the black flats on either the drive side or non drive side to unscrew it.

 

[rikster]

To demonstrate how they fit, see the photos. Ignore the the broken part of the tab in the first photo as it still has enough thread for the shifter to screw onto.

 

[jimo746]

That's the ones. They fit onto the existing frame mounts and then the shifter fits on top. The photo shows why you can't get the existing frame mounts off as they're screwed through from each side. You have to use a 7mm spanner on the black flats on either the drive side or non drive side to unscrew it.

Ahh... It all makes sense now.
Glad I called it a day and sought advice on here before I damaged something!
That's brilliant, thanks very much

 

[rikster]

It does make the downtube shifters stick out a bit especially if it's a fat tubed Cannondale but that's the way it is.

 

[legrandefromage]

I had those on my Vitus but I thought it was to do with a steel Orange not an aluminium one

 

[jimo746]

I had those on my Vitus but I thought it was to do with a steel Orange not an aluminium one

It's an aluminium Orange Dynamo road bike, read my 1st post . Think all the Dynamo's, including the later momostay ones, were aluminium.

What was the Orange road bike you had then? It definitely looks skinny steel tubed to me

 

[legrandefromage]

an Orange Dynamo

in Columbus steel

 

[legrandefromage]

And to keep it on track, heres the frame with slightly awkward dt shifter mounts - awkward when they fall off mid ride

 

[legrandefromage]

my DT shifters fell off after the retaining bolt similar to the above simply decided it no longer wanted to do the job of holding the shifter mounts in place

It was a long long single speed ride home