No, no, no! Bob is right. That is a Sturmey pulley braze on, probably cut from the usual band-on item. This bike would have had an ASC. Look at the size of it in relation to the pump peg. The two extra loops on the top tube are cable guides. They ensure the cable enters the stop in a straight line. A common feature on top British frames. Mark Stevens.London
Sheldon Brown wrote:
> Tom Hayes wrote:
> >For some of you tall folk on the list, I thought this Hetchins might be
> >interesting:
>
> Oooo, I'm drooling all over my keyboard!
>
> >http://page.auctions.yahoo.com/auction/46406631
> >
> >One question, what is the braze-on for on the seattube near the seattube lug?
>
> That's a standard down-tube shifter braze-on.
>
> This is a fairly common item on high-end touring machines. It's for
> a down-tube shift lever which is used to control a lighting generator
> below the bottom bracket.
>
> The use of a friction lever allows the rider to adjust how hard the
> generator's roller presses against the tire. This is a good thing,
> because the biggest problem with this type of generator is that they
> tend to slip when the tire gets wet. If you have enough tension to
> make it turn reliably when wet, you'll have excessive friction and
> wear in dry conditions.
>
> Sheldon "Hetchins Lust" Brown
> Newtonville, Massachusetts
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