Author Topic: 1976 CB550 K2 First timer - Sold  (Read 36473 times)

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Offline Godffery

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #175 on: February 03, 2018, 05:16:11 PM »
Hey man, would you be interested in a custom sprocket cover for this beauty?
I built it for a customer but he backed out B4 I was finished, at that point I was too far along to just shelve it.





Fits Honda CB550 K/F. Made of 18 gauge steel, Coated with etching primer, Ready to paint. .
« Last Edit: February 03, 2018, 05:18:53 PM by Godffery »

Offline SOHC4 Cafe Racer Fan

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #176 on: February 04, 2018, 12:14:09 AM »
Looks well made.
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 Godffery

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #177 on: February 04, 2018, 02:25:52 AM »
Looks well made.
Thanx, here's a pic of the back side.

Offline mscuiletti

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #178 on: February 04, 2018, 05:29:14 AM »
Hey man, would you be interested in a custom sprocket cover for this beauty?
I built it for a customer but he backed out B4 I was finished, at that point I was too far along to just shelve it.

That does look well made and thanks, but I am using the original cover which I already polished.

Offline mscuiletti

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #179 on: February 04, 2018, 07:45:45 AM »
I was hoping to get to the point in my wiring where I could push the start button and have it turn over. I realize I have yet to connect the rec/reg, coils, etc, but I figured having power to the right switch (black) would then send back through yellow/red. The solenoid clicks when green/red is grounded and yellow/red touches black. I did a continuity test on the start button from black to yellow/red and nothing happens when the button is pushed. I haven't wired the clutch switch yet, nor the two prong ssm. I figured I would get something from that push button though. I'll keep reading.

Offline mscuiletti

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #180 on: February 05, 2018, 04:50:12 PM »
Coils are all wired now (minus making it pretty).



The pup is tired of me ignoring him.


Offline mscuiletti

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #181 on: February 06, 2018, 05:47:28 AM »
Would it behoove me to replace things like the neutral safety switch and oil pressure sensor now while I have easy access? I already planned on reusing the diode (mine did not have the SSM unit) but I was unsure if sitting would hurt those other things and cause troubleshooting later on.

Offline mscuiletti

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #182 on: February 08, 2018, 03:40:01 PM »
I had a bit of a frustrating time in the garage just now. I have been trying to wire by following this guide for a 1976 550. This includes the diode rather than the Starter Safety switch/box/whatever it is. However, the reproduction switches I have do not match the wiring for this diagram, but rather the wiring diagram in my Haynes manual. The start button, for example, has continuity between green/red and yellow/red. I, however, planned on connecting yellow/red to the solenoid from the switch, and green/red from the solenoid to the diode to the clutch switch. Maybe I just tie the green/red wire from the handlebar with the clutch switch and then ground them.

A new clutch switch came today. It is Honda OEM. However, when checking continuity in the new switch, my multimeter beeps while the switch is depressed. I checked the old switch which I thought was junk, and the meter beeps while the switch is out, and stops once depressed. Am i just bad at ordering parts?

Then I continued to wonder why the solenoid would click when i jumped it, but the starter was not engaging. I realized that my test light was dim, and then the solenoid stopped clicking. I checked the AG-801 battery, and saw 5.3V. The only time it has been connected is during my troubleshooting, and left unplugged. Maybe I am an idiot and they ship them uncharged, but that is very low. I worry that I somehow destroyed the expensive battery, either by a drain somehow, or the cold garage. It is currently being charged and the OptiMate charger shows saver mode, so hopefully i can get SOME use out of that battery.

So my question is this, would it be best to follow the diagram that has black power going to the solenoid and try to find an SSM, or somehow wire the switches to work with my current configuration, as shown in this diagram? I will have to think about how the difference in the clutch switch, for example, will affect my current wiring.

« Last Edit: February 08, 2018, 03:49:45 PM by mscuiletti »

Offline mscuiletti

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #183 on: February 08, 2018, 04:44:08 PM »
It just occurred to me that I could use a black wire to the solenoid, and then the yellow/red from the solenoid to the switch, where the green/red to the clutch switch and grounded from there. I just need to figure out how to integrate the neutral switch.

**Edit**
I imagine green/red from the right switch would go to both the clutch switch, and through the diode and to the neutral switch. Then ground could be reached either in neutral or with the clutch. I'm studying adamantly and feel much better about this.  ;D
« Last Edit: February 08, 2018, 05:14:52 PM by mscuiletti »

Offline mscuiletti

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #184 on: February 09, 2018, 02:16:26 PM »
I pushed on after sorting the wiring in my head last night. I was able to change connections so that the push button was now causing the solenoid to click, but the starter never engaged. It seemed to move, like the motor was seized. I pulled the starter and ran a bench test again just in case. All worked as it should. I decided that now was a good time to finally pull the stator cover so i could turn the motor over by hand, and after lots of time begging and cursing, it finally came loose. Assuming the material that fell from the cover was not sand, but it looks like the bike had been used in the Baja. Once the cover was off, the motor turned easily with a wrench. I gave the starter a try once more,and it cranked beautifully! I am floored still. I am sure you are all used to it, but it felt amazing having something that has been sitting in my garage for two years to finally do something at the push of a button.







I have some cleaning to do and a stator to order. Any experiences with Ricks? This bike is not a show piece, nor a racing bike, but I do want to enjoy it for a long time. I also need to figure out why i was still able to crank the bike without using the clutch lever. One thing at a time for this noob...

Offline Stev-o

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #185 on: February 09, 2018, 02:27:13 PM »
I've never seen a stator in such bad shape.

Rick's has a very good reputation, but nothing wrong with stock Honda.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline mscuiletti

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #186 on: February 09, 2018, 02:50:36 PM »
I've never seen a stator in such bad shape.

Here is a reminder of what shape the entire bike was in. After seeing these again, I don't feel as bad about chopping it up.

The enormous spider living in this thing gave me a code brown.:






More spiders:





Offline mscuiletti

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #187 on: February 09, 2018, 05:58:56 PM »
Could the stator be cleaned with a brass brush on a Dremel?

Online calj737

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #188 on: February 09, 2018, 07:33:08 PM »
If you can, remove it. Drop it in a bucket of metal rescue and it should clean right up. You’ll need a puller to get it off the crank stem.
'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 mscuiletti

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #189 on: February 10, 2018, 10:57:29 AM »
If you can, remove it. Drop it in a bucket of metal rescue and it should clean right up. You’ll need a puller to get it off the crank stem.
Your wish is my command. Also trying the gel version. I used a brass brush to clean some of the heavy stuff off first.





I spent more time understanding the wiring, which I think I have sorted now, at least for the start button. I have power routed to the solenoid, then yellow/red to the start button. Green/Red from the start button to both the clutch switch and neutral switch, which I spent time cleaning and adjusting.



Now I get continuity from the button ONLY when the clutch lever is pulled and/or the bike is in neutral. I just need to wire this diode back in now which I believe simply prevents the neutral light from coming on while the lever is pulled.


Offline mscuiletti

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #190 on: February 10, 2018, 07:14:26 PM »
A bit cleaner and the motor spins now, but I'll have to check if it's functioning. For now its put back on with a new gasket.




Offline Stev-o

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #191 on: February 10, 2018, 07:33:19 PM »
Stators rarely go bad, you could check it with your multimeter.   Be sure not to pince the wires when replacing the cover.   Don't ask how I know that....ha!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline mscuiletti

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #192 on: February 11, 2018, 03:48:18 PM »
I moved the rec/reg beneath the tray for airflow. Hopefully this is not as risky as my previous attempt.

Offline mscuiletti

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #193 on: February 12, 2018, 03:47:32 PM »
Got back into my garage to work in the bucket a bit more. I brought a helper.



I was intimidated by the left switch due to the number of wires coming out of that thing until i started reading a bit. How many flippin wires are needed for signals?!



The exhaust is supposed to be done any day now, so I am trying to button things up before that arrives so I can try starting it before spring. I figured that will allow time for tuning.

Offline mscuiletti

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #194 on: February 13, 2018, 03:26:58 PM »
I started work incredibly early today, due to the nature of my field, so I was able to spend a decent amount of time in the garage. I now have the headlight fully wired, along with the taillight and front brake switch. I wired the tail light to black for now, thinking that is probably the safe thing to do, but no hiding in the dark for me. Now that i installed rearsets, i am not quite sure if i can even utilize the rear switch without relocating it, so left that out for now. I still have been unable to get the indicators to flash, so that will be next.



Online calj737

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #195 on: February 13, 2018, 04:17:07 PM »
For your bike, the stock harness had a Flasher Relay with 3 prongs. GREEN to ground, BLACK brings power, GREY sends power to the handlebars. If you are using LED signals, you need an electronic, not mechanical relay. These are inexpensive and readily available at the Auto Parts store.

The LEDs draw less current than the stock mechanical requires to trip the relay basically. Switching to an electronic relay alleviates the "load" issue and purely relies on current "present".

If that's your issue...
'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 mscuiletti

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #196 on: February 13, 2018, 04:25:42 PM »
For your bike, the stock harness had a Flasher Relay with 3 prongs. GREEN to ground, BLACK brings power, GREY sends power to the handlebars. If you are using LED signals, you need an electronic, not mechanical relay. These are inexpensive and readily available at the Auto Parts store.

The LEDs draw less current than the stock mechanical requires to trip the relay basically. Switching to an electronic relay alleviates the "load" issue and purely relies on current "present".

If that's your issue...

I think it is just me being ignorant. I had been trying to use a two prong led relay but by feeding black to it and then gray to the handlebar, to indicator, finally ground.  When looking over the diagram I noticed the relay was also grounded but unsure if me using LEDs would affect that. I ordered a three prong relay earlier this evening just in case.

Offline mscuiletti

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #197 on: February 19, 2018, 05:09:00 AM »
Yep Cal, the three prong relay works a treat. Everything is wired now, with the exception of the banjo bolt pressure switch that I pulled the wires out of from not leaving slack for turning the damn bars. Oops. Replacement will arrive today. Still waiting on word about the exhaust. Helmet will arrive tomorrow, and I also signed up for the Basic Rider Course in March, weather permitting.

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Re: 1976 CB550 K2 First timer - Wiring started
« Reply #198 on: February 26, 2018, 06:08:09 AM »
This is a smile, not the look of pain, but I did send this back as it felt just a tad too large. I figured if it broke in, it would no longer fit snugly.



I checked and realized I only had spark in cylinder 2,3 so I went back through my wiring and found  a bad connection at the left coil. Once I had power from both, I worked on static timing. Once that was set, I was itching to try to hear if it would run. As I am still waiting for the exhaust to be finished, I tossed on the originals. They are falling apart at the rear due to rust. I sprayed some starting fluid and the bike started right up.



Next I wanted to see if it would run with the tank. After soaking the tank in metal rescue overnight, the inside looked very good. Next I rebuilt the petcock as the original's filter was split in a few places.:





I found that three of the carbs were leaking from the overflow. I tapped with a rubber mallet but I figured it best to pull the covers and make sure no debris was preventing the needle from stopping fuel flow. After cleaning, only the number one carb still leaked. I adjusted the float height and it no longer leaks. I need to try the clear tube method to see how close they all are.

I mounted the rack back onto the bike, and it started easily, both via starter and kick-starter. I then spent some time failing to adjust the clutch. It seemed no matter how I adjusted the cable, the clutch was stuck. I used a rubber mallet to the outside of the case and turned the adjustment bolt back and forth a few times until it seemed to move. The first few times I pulled the lever with the bike running and shifted to first, it lurched and stalled. Probably not good for the bike. However, the last time I tried adjusting it, I started the bike, pulled the lever, shifted down to first, and the bike felt like it went into gear, but it was still running, and didn't lurch forward. I was elated. I slowly released the lever and the bike started moving under it's own power, likely the first time in 30+ years. I rode it around my tiny lot, wearing the biggest grin on my face. Even my girlfriend was so happy for me, she went to get wine to celebrate. Still much to do, but that was the best evening I have had in a very very long time. I love that such a simple machine can bring me that much joy. Thanks to all of you for getting me this far.



One thing of note, was the the blinkers flash almost erratically while the bike is running, but seem normal when the ignition is on but not running. I know cars that have a bulb out will flash faster due to something I read about last night but can't be bothered to look up right now. I am curious if  I should have wired the rear signals to the same relay with the front signals, as I only have one set of signals (if that makes sense). I checked and the ground did not affect it, and I cant imagine the power going to the relay would matter either. That just leaves the gray wire coming from the right handlebar.

Offline mscuiletti

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Re: 1976 CB550 K2 First timer - It runs and shifts!!!
« Reply #199 on: February 26, 2018, 10:23:32 AM »
Just sent Chris the payment for the completed exhaust. Super stoked.