Author Topic: 77 CB550F getting started  (Read 1363 times)

0 Members and 1 Guest are viewing this topic.

Offline GardenGnome

  • Enthusiast
  • **
  • Posts: 241
  • 1977 CB550F
77 CB550F getting started
« on: June 11, 2017, 10:18:10 AM »
This is my first post in this sub. I've been posting mostly tech questions, so I'm excited to share some progress of my project. I went over to a friends house to have him weld the seat hoop in. While it may be small, it's the start of the vision I have for this bike since pulling all the bit out of the frame. Anyway, enjoy some pictures.









If I've learned anything about building a motorcycle, it's check and re-check your work before you put it all back together. Although you do gain more experience by doing it twice.

Offline calj737

  • Really Old Timer ...
  • *******
  • Posts: 21,038
  • I refuse...
Re: 77 CB550F getting started
« Reply #1 on: June 12, 2017, 04:32:35 AM »
You will have a conflict between your new seat hoop/pan and rear tire  :-[

This "modification" is very popular, and so too is the issue. The factory hoop had that "offset" bridge to allow suspension travel and the tire to move vertically under compression and not touch the inner fender. You'd best stop now and confirm that either suspension changes you're making (longer shocks) or a smaller tire (probably need a 16") or both will accommodate the new hoop.
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline SOHC4 Cafe Racer Fan

  • Speak up, Whipper-Snapper! I'm a
  • Really Old Timer ...
  • *******
  • Posts: 15,731
  • SOHC/4 Member #1235
Re: 77 CB550F getting started
« Reply #2 on: June 12, 2017, 09:04:22 AM »
This is one reason why the angled hoops are a popular option.  Not the good kind of friction.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline calj737

  • Really Old Timer ...
  • *******
  • Posts: 21,038
  • I refuse...
Re: 77 CB550F getting started
« Reply #3 on: March 09, 2018, 12:46:34 AM »
Diagram for reference:
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline DurangoCB

  • Hot Shot
  • ***
  • Posts: 354
Re: 77 CB550F getting started
« Reply #4 on: March 09, 2018, 08:42:38 AM »
Grave digger! 
 ;D

That wiring diagram though... I like the way it looks visually.  Is that a one-off someone created or is there a website with a variety of wiring diagrams that are all similar visually? 
1971 CB500 Four- current project http://forums.sohc4.net/index.php/topic,170622.0.html
1978 CX500- next in line