Re: [CR] Headset with Locking/Clamping/Cinching Topnut

>
> From: Peter Craig Martin <petercraigmartin@gmail.com>
> Subject: [CR] Headset with Locking/Clamping/Cinching Topnut
>
> I vaguely recall having seen a threaded headset with a topnut the upper part
> of which could be clamped to the quill stem itself by tightening a small
> draw bolt, stabilizing the stem. I have managed to find several locking
> topnuts that clamp to the steerer alone -- e.g., the Onza Mongo II and the
> Wheels Manufacturing Growler Headlock -- but they aren't what I remember
> seeing. I'm stretching my recollection to the limits, but I want to say
> that what I saw was silver, nicely rounded and polished, possibly French or
> Italian, and on the pricey side. I also think it may have been mentioned as
> an aside by someone on this list. (Unfortunately, I haven't been able to
> find it in the CR archives or in my own email archives.)
>
> Does anyone know of a headset or locking/clamping/cinching topnut that
> matches my recollection? If so, I'd be grateful if you would email me a
> name or a link. (If you post, please also copy me offlist; I have CR
> delivery suspended for the time being.)
>
> Peter Craig Martin
> Seattle, Washington, USA

I have one that clamps to the steer-tube only, it is only about 6mm thick and has an M4 bolt that clamps it tight after it is screwed on.

I have never seen one that clamps to both except for ones that are part of the gooseneck like this one by bike friday that I've attached a picture of, it is welded onto the "goose-neck" and is a skirt that comes down around the top of the steer-tube, clamping onto the top of the steer-tube. I think a few other folding bike types things use a similar thing, but I do not remember off the top of my head... I know the picture will not come through to the list, but it will go to Peter, so I attached it anyway, if anyone needs to see it, I can resend to individuals... I was looking for a picture of it on their web-site to link to and found this, which might be close to what Peter was asking for... http://store.bikefriday.com/product_info.php?cPath=25&products_id=9383

Thomas Seaman
Portland, Oregon: U.S. of A.
kokoPedli.com