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Author Topic: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"  (Read 6797 times)

Offline BLAC

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1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« on: Jan 30, 2017, 17:45:36 »
Hello all!

Im midway through a build and decided to finally get a thread going.

I started with a mostly stock and complete 1974 CB550 with 8k miles on it, rode it once (home from the previous owners house) then tore into it. 

Here are some of the highlights thus far and I will update this thread as I make progress.

The starting point:


The workshop:


GF is a photographer.  Had to document that I was doing all my own work  :P


Rebuilt the stock carbs with factory rebuild parts:



More disassembly:

If you cant fix it with a hammer, it's an electrical problem.

Offline BLAC

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Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #1 on: Jan 30, 2017, 17:53:06 »
Naked frame!


I decided to go with aftermarket wheels. Excel Shouldered wheels (18's).  Time to chop:


I contacted Cliff Meyers via Cognito Moto and had this beauty made:



For the front suspension I went with new TNK fork tubes, Racetech springs, and gold valve emulators:


Installed in my rebuilt and polished forks.. I sanded my fingerprints off getting these things shiny...


Wheels came in from Buchannan's (avon Roadrider tires):


I had to stage a pic:


If you cant fix it with a hammer, it's an electrical problem.

Offline BLAC

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Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #2 on: Jan 30, 2017, 18:00:24 »
after going back and forth, I decided to cut the read subframe off and rebuild it how I wanted it, instead of just adding a hoop to the rear section:




(small tacks to help me see what I want it to look like)



I built a new subframe and tacked it together to see what it would look like with my Hagon springs:





Starting to come together:


I fell out of love with the Hagon setup and decided to go the monoshock route:
http://forums.sohc4.net/index.php/topic,154614.325.html

Milling the channels in the hoop.


Added the front brace bar (I'm finally getting decent at fish-mouthing!)


Test fitting... Getting Closer...


Ahh there it is.


Mock up.


Looking good for now!
If you cant fix it with a hammer, it's an electrical problem.

Offline BLAC

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Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #3 on: Jan 30, 2017, 18:09:47 »
I contacted Cliff Meyers again about making a front fender.. he is amazing:



Im going to have Racetech make me a custom Monoshock, here was my notes from my first call with their team.. I think its making sense..


Snagged a new upper tree from Cognito:



Got a new welding mask, Digital Elite from Miller just in time to patch up my frame:







I needed one more thing to spend too much money on, so I decided to open up the motor, send the head off to Mike Reick for headwork, 59mm Weisco pistons, megacycle cam (still decide which profile) and balanced crank+rods.

If you cant fix it with a hammer, it's an electrical problem.

Offline Hurco550

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Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #4 on: Jan 30, 2017, 18:12:24 »
Wow dude. Nice work. Love those high shoulder rims. Cliff over at Meyerbuilt sure knows how to push metal through an English wheel! Keep the updates coming!
"If you just picked up a drug habbit instead of a kawasaki triple at least you could get high while you waste money"
~ bradj

2006 Suzuki DR650 Adventure monowheel trailer build: http://www.dotheton.com/forum/index.php?topic=75033.0
1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"much ingenuity with a little money is more profitable and amusing than much money without ingenuity" - Arnold Bennett

Offline BLAC

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Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #5 on: Jan 30, 2017, 18:17:11 »
Sent a couple pieces off to Noblehops to be vapor blasted.. amazing work...



Are you kidding me, this is amazing...


I fell out of love with the angle that I had my subframe braces, so I cut them off and made new ones:





Got the rest of the engine broken down, ready to be vapor blasted by Niblehops:



Time to get this monoshock mounting business wrapped up...

I decided to make a mock up of the monoshock with an adjustable section so I can set my desired ride height.  Here was the workflow:

Make the ends based on what I am having Racetech make for my spring ends:


Didnt spend much time making it pretty, but it should work!

If you cant fix it with a hammer, it's an electrical problem.

Offline BLAC

  • Posts: 27
  • See Bee Five Fifty
Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #6 on: Jan 30, 2017, 18:21:49 »
Wow dude. Nice work. Love those high shoulder rims. Cliff over at Meyerbuilt sure knows how to push metal through an English wheel! Keep the updates coming!

Thanks!  I will definitely keep the updates coming. It has been about a year into the build (almost) so I apologize for the heavy datadump getting y'all up to speed, but progress from here out should make more sense  ;D
If you cant fix it with a hammer, it's an electrical problem.


Offline jpmobius

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Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #8 on: Jan 30, 2017, 18:38:06 »
Looking good!  And some familiar looking general direction so far as well, not to mention posting all at once!  Race Tech - great people to work with.
Mobius


On a long enough timeline, the survival rate for everyone drops to zero.

1973 RD350 Yamaha build  http://www.dotheton.com/forum/index.php?topic=66498.0

Offline kosmoto

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Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #9 on: Jan 30, 2017, 18:40:51 »
Very cool stuff! -- following along...