1975 Commando 850 restoration

My excuse by the way is i ran out of money
Yer lucky.
I worked on the street today with a knee pad . Wiped away the snow first.
But did manage to fit the new 21 T. sprocket tight. And fitted the better mainshaft clutch support circlip sanded down thinner to fit. Tapped into place. Covered up good as a new snowstorm hits tonight.
A lowly garage goes for a million dollars here now.
 
Yer lucky.
I worked on the street today with a knee pad . Wiped away the snow first.
But did manage to fit the new 21 T. sprocket tight. And fitted the better mainshaft clutch support circlip sanded down thinner to fit. Tapped into place. Covered up good as a new snowstorm hits tonight.
A lowly garage goes for a million dollars here now.

Surely you have a house / flat etc with a kitchen / living room / bedroom?

Plenty of space to work on the bike.

Just a question of priorities ;)
 
You need to park it in an old uhaul trailer, or an old horse float. Put a wheel clamp on it so no one can haul it away. Protection and a place to work.
 
At uni I brought my 250 BSA up 4 floors to my room. I got away with it for a while until
the Authorities took exception to my driving up and down the hallways....
No sense of humour whatever.
I used to live in an old warehouse loft in Seattle, half a block from the police station where the riots were last year. Rode thru the carb shop, up the freight elevator down the hall to my 2500sf loft. Guy next door had an old BSA single and did the same thing.
 
At uni I brought my 250 BSA up 4 floors to my room. I got away with it for a while until
the Authorities took exception to my driving up and down the hallways....
No sense of humour whatever.
But, if you had just pushed it, you might have got away with it a bit longer. . . . .
 
Got my wheels back after lacing at a local bike shop. $150. Not bad. Things are looking good!!
 

Attachments

  • 1975 Commando 850 restoration
    20210225_190240-01.jpeg
    433.5 KB · Views: 240
  • 1975 Commando 850 restoration
    20210225_190045-01.jpeg
    436 KB · Views: 220
More progress. Cleaned up a few bits.
 

Attachments

  • 1975 Commando 850 restoration
    20210118_184739-01.jpeg
    621.9 KB · Views: 217
  • 1975 Commando 850 restoration
    20210225_190550-01.jpeg
    826.5 KB · Views: 222
  • 1975 Commando 850 restoration
    20210225_190642-01.jpeg
    394.1 KB · Views: 213
  • 1975 Commando 850 restoration
    20210225_190829-01.jpeg
    368.3 KB · Views: 200
  • 1975 Commando 850 restoration
    20210225_190855-01.jpeg
    514.5 KB · Views: 212
  • 1975 Commando 850 restoration
    20210225_190907-01.jpeg
    427.6 KB · Views: 214
These pipes are cleaning up nicely! You might not be able to tell from the photos but this has beautiful patina. The pretty bluing.
 

Attachments

  • 1975 Commando 850 restoration
    20210225_191633-01.jpeg
    475.2 KB · Views: 213
  • 1975 Commando 850 restoration
    20210225_192240-01.jpeg
    437.8 KB · Views: 217
These pipes are cleaning up nicely! You might not be able to tell from the photos but this has beautiful patina. The pretty bluing.
Do yourself a favor. When you install the exhaust system on the bike, coat all the faying [contact] surfaces with anti seize. That will ensure that the parts will disassemble easily in the future. It also will prevent the faying surfaces from rusting.
 
It's been awhile since I've updated but I've been working on the rebuild as funds and time allows. Progress nonetheless. Installed a bunch of bolt ons.
 

Attachments

  • 1975 Commando 850 restoration
    20210329_190958.jpg
    512.6 KB · Views: 181
  • 1975 Commando 850 restoration
    20210329_190942.jpg
    490.4 KB · Views: 208
More progress. I'm installing a new wiring harness. I read a bunch of old threads trying to figure out how to run all the wiring throughout and the best piece of advice I found was from grandpaul. He stated to just drape the harness over the spine of the frame and everything should just about hang where needed. From there it's all about threading the harness through the various grommets starting from the front grommet leading with the tail light section working it through till it's correct. gtiller's wiring diagrams are just great. For anyone that doesn't know, he has made individual drawings for all different configurations. Excellent resource.
 

Attachments

  • 1975 Commando 850 restoration
    20210426_190423.jpg
    513.1 KB · Views: 196
  • 1975 Commando 850 restoration
    20210426_190447.jpg
    549.8 KB · Views: 184
  • 1975 Commando 850 restoration
    20210426_190510.jpg
    432.1 KB · Views: 175
  • 1975 Commando 850 restoration
    20210426_190844.jpg
    273 KB · Views: 189
Look what I received today from CNW. A beautiful new 34mm carb kit. Nice stuff! Thanks Matt.
 

Attachments

  • 1975 Commando 850 restoration
    20210428_195911.jpg
    434.4 KB · Views: 188
  • 1975 Commando 850 restoration
    20210428_195900.jpg
    432 KB · Views: 226
Ok, still doing my wiring and I've come across this item. It doesn't show up on the parts drawings but it was definitely hooked up on the bike. With the new harness there are no wire terminals to connect to this item. What is it, what does it do, and why do I need it? Keep in mind I'm running a Power Arc electronic ignition. Thanks in advance.
 

Attachments

  • 1975 Commando 850 restoration
    20210429_202631.jpg
    579.2 KB · Views: 169
  • 1975 Commando 850 restoration
    20210429_202626.jpg
    438.3 KB · Views: 168
It doesn't show up on the parts drawings but it was definitely hooked up on the bike. With the new harness there are no wire terminals to connect to this item. What is it, what does it do, and why do I need it?

It's the 3AW charge 'Warning Light Assimilator' items 36 and 37 in the AN link parts diagram (not the 2MC capacitor) fitted to early MK3 models (see Mk3 manual section J8). Top left in the picture below near the head steady.
1975 Commando 850 restoration

Replacement harnesses only have connections for the later 5-wire assimilator/warning light control unit that would be attached to the battery tray.

Edit: There should be a group of seven harness wires (five for the standard assimilator plus two alternative wires for the Canadian lights on control unit (see manual J8) and the same three colour coded wires (WN, GY, R) can be connected to the 3AW.
 
Last edited:
Back
Top