The arm is not designed to be bendable. The throw on the sliding piston is different for the 2-speed from the standard 3-speed.
regards
Hilary
hilarystone.com Period bikes and components
On 06/02/2011 19:48, Damon Strub wrote:
> I am relatively new to this group; this is my second posting. I live in NYC
> and currently have 12 bikes, only three of which are relevant here, all
> Raleigh's.
>
> Last year I purchased a 1948 Raleigh clubman that had an FW hub and a Cyclo
> Benelux 2 speed conversion kit. However, someone had substituted a schwinn
> derailleur. Based on what I observed on the web, a mark 7 derailleur looked
> like the right, original set up. However, the one I purchased did not
> align right; when the coil spring is extended, the pulley is in the spokes.
> When pulled all the way out, it still does not align w/ cogs.
>
> Looking again at a Raleigh sport on eBay w/ a similar setup and a mark 7, it
> appears that the pivot arm is bent differently, angling out so that the
> pulleys line up. Its steel so should be bendable.
>
> My question is: Are the pivot arms on Mark 7 deraileurs bendable, that is,
> were they intended to be field adjusted to align, or rather were they
> offered in several different factory set up bends and I just ended up the
> wrong bend?