The first video shows the whole bike, and the entire deraileur mechanism
The second video is a closeup of the main pivot
And the third video is of the main deraileur mechanism itself
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.
Friday, September 6, 2013
BGA Velectrik deraileur mechanism
I have cleaned, greased, reassembled, and mounted the deraileur. Here are some videos of how the BGA deraileur works.
The first video shows the whole bike, and the entire deraileur mechanism
The second video is a closeup of the main pivot
And the third video is of the main deraileur mechanism itself
The first video shows the whole bike, and the entire deraileur mechanism
The second video is a closeup of the main pivot
And the third video is of the main deraileur mechanism itself
Tuesday, September 3, 2013
Left Pedel reassembly
The pedal soaked in a bucket of evapo-rust overnight.
Here are the parts out of the evapo-rust after a quick wipe down. (the other pedal is in the background)
This is the cone on the pedal. You can see a hole in the race, and part of the race actually seems to have dissappeared. (I also found what looked like 1/2 a ball bearing when I dis-assembled it). I went to 2 bike stores to try and find a replacement but no luck. I did get a lead on a place about an hours drive away that recycles old parts, so I will try that later this week.
Repacked using new 5/32" ball bearings.
and lots of grease
before the top layer of grease was added.
finished left pedal next to the right pedal (which is in the evapo-rust bucket now)
right pedal
finished left pedal
Here are the parts out of the evapo-rust after a quick wipe down. (the other pedal is in the background)
This is the cone on the pedal. You can see a hole in the race, and part of the race actually seems to have dissappeared. (I also found what looked like 1/2 a ball bearing when I dis-assembled it). I went to 2 bike stores to try and find a replacement but no luck. I did get a lead on a place about an hours drive away that recycles old parts, so I will try that later this week.
and lots of grease
before the top layer of grease was added.
finished left pedal next to the right pedal (which is in the evapo-rust bucket now)
right pedal
finished left pedal
Sunday, September 1, 2013
Reinstalling the bottom bracket.
1/4 inch bearings required
The adjustable cup and lockring before cleaning and repacking
After cleaning
First layer of grease with 11 1/4 inch ball bearings packed in.
Another layer of grease on top
Drive side of spindle (I hope, this side was a little longer) with a layer of grease and the 11 1/4 inch bearings packed in
Another layer of grease on top
Adjusting the adjustable cup was difficult because;
1. it has wrench flats instead of pin holes
2. the wrench flats are too large for any non-adjuctable wrench I own
3. the lockring notches are too small for any lockring tool i own.
The wrench flats are 1 1/8 inch (28.575mm). I ended up using an adjustable wrench, and since this is not put on tight at all, it worked fine.
After a lot of searching and trial and error, I found this VAR - 78 tool worked very well on the knurled edge of the lockring.
I haven't fully inserted the cotter pins yet, but wanted to see it look a bit more like a bike. Quite please with how the chainring/cranks have cleaned up with the evapo-rust. (the cotter pin nut and washer are in there now)
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