Wie man eine SRAM G8 mit einem Schalthebel für Kettenschaltung rettet: Unterschied zwischen den Versionen

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I purchased the whole ‘kit’ for this hub as new old stock on eBay in early 2019, the twist changer dated 2013.  As supplied this hub was unusable, but of course I didn’t know that at the time!

I use hub gears for my ‘about town’ cycles, nicknamed here my ‘bank bikes’ as that is the run they normally provide; a round trip of about an hour; a mixture of main roads in traffic, dedicated cycle paths and singletrack through a wood.  First gear must be low, the equivalent of a normal ATB’s ‘granny gear’.  Until recently I’ve been using the Shimano Nexus 7 with a twist changer; all excellent and thoroughly reliable.  So when the chance of the extra gear came up at a bargain price, I thought ‘why not?’.

Then ensued a series of disappointments ending in the reinstalling of the Nexus 7 wheel.  If the Sram was adjusted as in the leaflet, gears 1, 2, 3 and 4 were ok but 5 slipped and 6, 7, 8 were unreliable.  If five was set not to slip, 1 2 3 disappeared.  Such behaviour is of course dangerous in traffic.  It struck me that the twist shifter was nothing like as ‘clicky’ as the Shimano Nexus, and rather vague in its indexing.  I also noted that with the yellow marks aligned in gear 3, there was actually another first gear missing because the cable was so tight.

I then recalled reading on the internet (Sheldon’s site I think) [here] that this and the G9 [probably not the G9 though without some alternate cable routing] were the only hub gears that worked with their standard derailleur rear shifter controls, a more normal twin lever shifter (push up, click down) [SRAM 3.0 8-speed shifter].  Finding one on eBay, I recalled how SRAM boasted of their 1:1 actuation system, where shifter movement equalled mech movement (I’ve precis-ed that…).  Off the cycle, I tested the fitted shifter, and it behaved very differently from the twist one.  It pulled a lot more cable at the upper gear end, and nicely precise.  I also set it so that the yellow marks matched in gear 4.  It would only just click into gear 8, a judgement I was later to find important.