Although not designed to be bendable (and certainly not supplied in a range of 'bent' positions) they are vulnerable to knocks like any derailleur, and from workshop experience way back, occasionally have to be got to grips with/getting the grips (pliers) onto to keep the jockey wheels vertical and aligned fore and aft. That is essential for any derailleur to work properly. Unless the Schwinn 'throw' can be reduced to the very limited amount to hop from one cog to the only other one and not onwards into the spokes (which I doubt) this set up really does need the special Cyclo 2 speed 'reduced throw' arm as Hilary describes rather than any old Mark 7. Hope that helps further John Purser Sudbury, Suffolk
Message: 4 Date: Sun, 06 Feb 2011 21:37:21 +0000 From: Hilary Stone <hilary.stone@blueyonder.co.uk> Subject: Re: [CR] Cyclo Benelux two speed conversion kit question To: Damon Strub <nomadarch@verizon.net> Cc: classicrendezvous@bikelist.org Message-ID: <4D4F1491.6030406@blueyonder.co.uk> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
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?