[Closed] 3-speed front gearbox in a crankset

I always fancied a Schlumpf Mountain Drive.

http://www.mossbikes.co.uk/store-2/#!/Schlumpf-Mountain-Drive/p/45095175

Not pretty is it.

This looks like an attempt at a not-so-subtle bit of marketing, being that it is your first and only post, and I notice you also joined another popular UK forum to ask the same question (word for word)

FWIW, some of us have heard of the Efneo, and it has been discussed on this forum a few times before.

I don't think anyone would begrudge you wanting to highlight the product of perhaps provoke some discussion of it but I wonder if perhaps you want to come clean as to your involvement?

I apologise if there is none, but it seems unlikely. If that is the case though perhaps you'd care to tell us a bit more about your intended use, whether you have any specific questions about it, and whether or not you have any experience of similar products to compare to?