Rear Derailleur Hanger Identification - Dan Smith DOS Columbus Steel Frameset

Hi All,

I'm after some help to identify a rear mech hanger to replace one that has broken on my bike.

The frame was built by Dan Smith of Cycles in Motion in Sheffield. Unfortunately this shop has no closed and I don't have a direct contact with them to enquire what hanger was used to build the frame.

Firstly, if anyone knows Dan or has contact details for him to ask on my behalf, or pass them on that would be amazing.

If not, does anyone know what the hanger is and where I might get a replacement?

Cheers

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That looks fairly standard, in fact I think I bought that exact one to put on one of my bikes from Wheels manufacturing, unfortunately I can't remember the code now ha.

I just had a quick look, it looks like number 1 derailleur hanger

But have a browse of them all if you disagree, I know it looks like an insane amount but there aren't many 3-bolt ones so you can zoom through them pretty quickly looking

Thanks for the comment. It is the same shape as No.1 but my one is the reverse of it, i.e. it needs to flip 180deg

I've had a look through Wheels and PILO but can't find the exact on. The nearest hanger I can find is the PILO D438. It looks very similar but the cut where it steps out and buts up to the frame is too high and square rather than at the bottom of the circumference of the hanger mounting part.

It can't be the reverse, there's only one way it can go on. If you look at the position of the butt for the dropouts and the mech, they are both facing the same way as the one in your post and the number 1 hanger. I am 99% sure it is the number 1 hanger.

Mine is the inverse of the No.1 as mine attaches from the inside of the frame, not the outside.

So the thicker part is on the opposite side. See photo to try and show.

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The picture on the website shows the hanger being attached to the outside of the frame meaning the thicker part then sits under the frame.

My broken hanger in the picture is flat to the ground and the thicker part pointing upwards. It fits on the inside of the frame, so on the underside that you can't see, the bolt holes are chamfered to take the screws. The thicker part then fits under the frame.

So I believe the website to be correct for Wheels No.1.

The PILO D438 is the correct orientation for what I need, but if you look the thicker part squares at the top rather than following the curve of the flat part as the Wheels one does meaning it won't fit my frame unless you machined it down to match the curve.

I'm lost now to be honest. The PILO one does have a little indent along that line though, so it wouldn't be too difficult to machine it along that line. You could get most of it off with a dremel and then the rest with a file.

I'm kind of even wondering if the WM one just looks 180 because the image has been flipped. It looks like it's being attached to the NDS in the image. Don't take my word though

WM are good at showing which side the hanger mounts tbh. If you are filling a flat you have to make 100% sure it’s parallel to stop poor shifting.

Not really - it doesn't have to be filed absolutely perfectly; you just have to do what you'd do whenever you fit a new hanger, and check its alignment.

Perhaps worth shooting a picture of it over to Peter at Ceeway, If the frame was handbuit here in the UK, chances are all the raw materials came from Ceeway.

I thought Dan had opened a new place with a couple of other people, but can't remember the name.

Maybe @TheBonk might have a better idea?

He set up Gritspoke but I don't think that is trading either now.

Thanks for the idea, I'll drop them a message and see.

If you're still looking this tool is very useful!

https://www.marwi-eu.com/gh_assembly_style.php

That's a nifty link.

Thanks for everyone's help / input so far.

I managed to get hold of Dan and speak to him today. It turns out the hanger was custom made and is not an off the shelf item unfortunately.

Does anyone know someone who would custom make a hanger that they would recommend?

May be try bear frame supplies or bentley components.

If you can get a 3D file of it, you can get a mob like PCBWay to machine you one.