Yes to the IGH; far more elegant IMO than a FD and a chain tensioner not to
mention the multiple chainrings. But the defect of IGHs is the choice of
ratios, drag -- if you choose a wider-range, more-ratios hub the internal
friction increases, and if you choose the lowest drag options (several
tests have shown that the basic SA 3 speed hubs have no more drag, or even
a wee bit less drag, overall, than derailleur systems), you are limited to
the more basic 2 and 3 speed hubs which have very limited range.

But if you can get by with limited ratios, they're worth considering. I've
built very usable all-rounder beaters with the venerable, durable, and in
fact ineradicable AW, and the nice thing is that the these are very
available, very cheap -- old units are about $50 on eBay and older ones,
even the 114 mm OL ones, will work fine with 120 mm frames. I've set mine
up with 3d/high/overdrive for pavement cruising with about a 72" gear,
2nd/direct at about 54", and 1st/low/underdrive at about 41".

Couple the AW with a double ring and you can split the gaps in the AW for a
very usable 6-speed -- my second complete bike build circa 1971 had a "half
stepped" AW, tho' I used 2 cogs instead of 2 rings.

But even more exotic SA IGH are available on eBay; the wonderful AM medium
ratio hub comes up from time to time at reasonable prices (I got mine for
well under $200 each -- $150? -- IIRC in runnable condition) and again the
114 mm OL will fit 120 mm frames with only strategic anti-rotation washer
selection and placement. And, it uses the ubiquitous AW trigger shifter.
Direct, 15.5% overdrive, 0.8654% underdrive; mine are geared75/65/56". And
the AM is reputed to be, like the AW, one of SA's most durable hubs.

And even the pure gold ASC close ratio fixed 3 speed. I got my 2 very
cheaply, $200 NOS and $150 used but VG. But these are much rarer; I was
lucky.



On Thu, Sep 12, 2024 at 1:19 PM Mackenzy Albright <
[email protected]> wrote:

> ... I think an internal real hub like a sturmey-archer 3 speed with a
> compact double crank and paul tensioner would be an incredible build....
> Price aside the roaduno is the perfect candidate for some fun builds.
>

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