BGA Velectrik: Dissasembling and cleaning rear derailleur (part 2)

Detailing the strip, clean, and reassembly of this bicycle. The bike is a BGA, which stands for Blanchard-Grange Armes. It was made in St Etienne in around 1935. The derailleur and brakes are ”Velectrik” which seems to be the house brand of Blanchard-Grange. The most interesting thing about the bike is the rear deralieur which is operated by a long leaver by the downtube, which in turn is linked to a rod which moves the derailleur CLICK ON THE PHOTOS IN EACH POST TO SEE THEM FULL SIZE.

Monday, August 5, 2013

Dissasembling and cleaning rear derailleur (part 2)

August 5 2013

Cleaned lots of the parts shown in these photos in white spirits.

The rod and spring are soaking in oxalic acid overnight.

Removed derailleur hanger from linkage strut

Starting to clean derailleur wheel


Cleaned

Leading edge of strut mounting bolt is at 10mm. Leading edge of spring mounting bolt is at 111mm. Mounting bolts are at 180 degrees from each other

spring mounting bolt detail. This was very hard to remove, even with lots of WD40. Was difficult to turn all the way to the end.

Lever mounting bolt detail

Lever mounting bolt removed.

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