Any question answered...

I reckon that you could use Hollowgrams on a BSA shell, with a suitable axle.

Why would this not be true?

Your two problems would be finding a Hollowgram axle 22-24mm longer than standard, and finding a front dérailleur which could reach the rings at the new chainline. Cranks designed for HT2/GXP/UT/BB86 have dished spiders, so the chainring plane lies inboard of the outer face of the DS bearing. Hollowgrams are designed for BB30 only, so the spider is flat because the expectation is that the DS bearing face will always be 34mm off the frame centreline.

Hang on, your three problems would be axle length, front dérailleur alignment and Q-factor; generally lower Q (lower even than standard track cranks) is more biomechanically efficient, so widening it even more is a bad idea.

Four problems; axle, FD, Q and an almost fanatical devotion to the Pope...

Shimano RS80 or Fulcrum Racing 3?

RS20 or RS30 for now, wait for WH9000 tech (D2 rims, 2:1 spoking) to trickle down before buying mid range wheels.

Your two problems would be finding a Hollowgram axle 22-24mm longer than standard, and finding a front dérailleur which could reach the rings at the new chainline. Cranks designed for HT2/GXP/UT/BB86 have dished spiders, so the chainring plane lies inboard of the outer face of the DS bearing. Hollowgrams are designed for BB30 only, so the spider is flat because the expectation is that the DS bearing face will always be 34mm off the frame centreline.

Hang on, your three problems would be axle length, front dérailleur alignment and Q-factor; generally lower Q (lower even than standard track cranks) is more biomechanically efficient, so widening it even more is a bad idea.

Four problems; axle, FD, Q and an almost fanatical devotion to the Pope...

MTB axle is 131mm, front mech can clearly cope as it can handle my cranks and also standard Shimano cranks which as I noted move the rings out significantly.

Q factor- yeah, that might be an issue, but then MTB'ers cope.

If you already know the answer*, why ask the question?

*at least, what you want the answer to be.

Because there may well be something I'd not considered.

On one external BB crank good for the money?
Seems so to me, they'll be going on the gangsta.

Because there may well be something I'd not considered.

The thing you haven't considered is that you might be wrong about the things you have considered.

i.e. I imagined the rings being far further out on the HT2's?

The Doors - Back Door Man (2006 Remastered) - YouTube

Euph?

i.e. I imagined the rings being far further out on the HT2's?

Yes.

The centreline of my big ring is ~46.5mm from the centreline of the bike, what would an HT2 one be?

On one external BB crank good for the money?
Seems so to me, they'll be going on the gangsta.

apparently the BB is crap, but when you replace that they're good.

Cheers, I'll use the stock on for the time being I guess, they're on sae for £75 now anyway.

^ have been £75 for years, no rush.

What's the accepted aesthetic match for a titanium post, that isn't a titanium stem?

Frame

Fair enough. How about:

Excluding titanium, what's the best finish/material for a stem to match a Ti post?

Stainless steel.

What other colours and finishes are we looking at here?

And quill or ahead?

Ahead, carbon fork, blue slightly sparkly fillet brazed steel.

Matt blasted Ti

I'd go for matching the bars, which (guessing here) is going to mean black anno.

Or, as I seam to be mildly obsessed with this brand at the moment, a Syncros stem.