Author Topic: Toustic's CB550F - A Swiss' first build  (Read 33602 times)

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Offline Maurice

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Re: Toustic's CB550F - A Swiss' first build
« Reply #125 on: June 24, 2014, 11:04:30 AM »
With a short of any kind he would be seeing the voltage go down and down... Hopefully that is not the case, I'll take a bad battery any day over tracking a short circuit.

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Re: Toustic's CB550F - A Swiss' first build
« Reply #126 on: June 24, 2014, 11:07:53 AM »
Definitely check for a short, but I would also take the battery back for an exchange.
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Offline Toustic

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Re: Toustic's CB550F - A Swiss' first build
« Reply #127 on: June 24, 2014, 12:35:59 PM »
So... I pulled the battery for a charge. Left it for a while while taking care of other things. Got up to:


I plugged the battery to see if I could get some reading on my points. As I'm trying to take them for a little bit without much success, I check the battery again based on your suggestions and that's what I got


Headlight not connected, and all lights off aside of that. I didn't even try to start it while taking the readings.
Just ignition switch on.

I think the bike is eating power. Because I have charged the battery twice up to 12.6 and without even trying to crank the engine, just by installing the battery in and switching the ignition on it drained down to 11.9 and below.



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Offline Maurice

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Re: Toustic's CB550F - A Swiss' first build
« Reply #128 on: June 24, 2014, 12:40:20 PM »
Battery may be weak, but it is somewhat normal for voltage to go lower when ignition is on, since coils (likely) get charged and the field coil (part of alternator) is powered. Make sure your grounds from regulator and rectifier to frame/battery are good.

Offline Toustic

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Re: Toustic's CB550F - A Swiss' first build
« Reply #129 on: June 24, 2014, 01:10:37 PM »
But even if all I did was turn the ignition on a couple of minutes before turning the ignition off and getting this last number (11.92)

Your 2nd suggestion: Not sure what to look for when you say "make sure" .. rookie here

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Offline Maurice

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Re: Toustic's CB550F - A Swiss' first build
« Reply #130 on: June 24, 2014, 01:40:14 PM »
Leaving the ignition on for a couple minutes will surely use some battery, depending when you measured could be normal. Shouldn't prevent you from troubleshooting other things IMO.

To ensure grounds are ok, well, just make sure all connections are done and good. Is it stock wiring? Follow wires and measure continuity on green regulator/rectifier to frame, connectors are clean etc. Can't learn everything in one day, but it's always good to keep learning.

Offline Toustic

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Re: Toustic's CB550F - A Swiss' first build
« Reply #131 on: June 24, 2014, 02:12:40 PM »
Thank you for the tips.

I'm gonna try and be patient about the troubleshooting. Just trying to read a lot about it.

Sorry guys. I'm tripping on such basic  stuff it feels.

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Offline Bankerdanny

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Re: Toustic's CB550F - A Swiss' first build
« Reply #132 on: June 24, 2014, 02:58:41 PM »
Like you said before, that's how you learn.
"The problem with quotes on the Internet is that you never know if they're true" - Abraham Lincoln

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Offline Toustic

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Re: Toustic's CB550F - A Swiss' first build
« Reply #133 on: June 25, 2014, 08:15:58 AM »
Also wanted to ask if you guys had a suggestion regarding the fact that my kickstart only turns the engine over when the cover is off.

I've tried re-bolting down the the clutch spring plate a couple of times to see if it would make a difference. It does when the cover is off, but as soon as I bolt it down to the crankcase and try to kick the engine over, it just spins freely and doesn't engage the primary drive.

I haven't been replaced the clutch plates, nor the springs (in case this is useful info). I just followed the manual's protocol, as well as those:
Thank you for dealing with this, I feel bad shoving my despair in your faces so blatantly
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Offline Maurice

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Re: Toustic's CB550F - A Swiss' first build
« Reply #134 on: June 25, 2014, 08:25:23 AM »
You probably have the clutch adjustment pushing the rod too far in. Try to remove the clutch cable and/or back out the the set-screw at the bottom of the cover.

Offline Toustic

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Re: Toustic's CB550F - A Swiss' first build
« Reply #135 on: June 25, 2014, 08:34:15 AM »
You probably have the clutch adjustment pushing the rod too far in. Try to remove the clutch cable and/or back out the the set-screw at the bottom of the cover.

Thank you, will try.
The clutch adjustment is at the highest it can be on the thread. However, I haven't bolted the clutchplate very far down. just enough so that I had to use a wrench to get it tighter. Maybe a got a bit shy on that part.
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Offline Maurice

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Re: Toustic's CB550F - A Swiss' first build
« Reply #136 on: June 25, 2014, 08:42:11 AM »
What do you mean 'highest'? As in, 'cable as tight as a piano string'? If so back it out give it some slack. For the kickstarter to work the clutch must be engaged (i.e: hands off the lever).

What clutchplate are you referring to? In my mind the only clutch plates are the friction and pressure (metal) ones and they aren't bolted.

What did you have to use a wrench on?

Offline Toustic

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Re: Toustic's CB550F - A Swiss' first build
« Reply #137 on: June 25, 2014, 12:27:55 PM »
Clutch spring plate and the 4 bolts I'm talking about:


Before, the plate was not bolted down enough and would actually stick out in comparison to the clutch basket, now I have bolted it dowm a bit further, and it looks like this:


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Offline vfourfreak

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Re: Toustic's CB550F - A Swiss' first build
« Reply #138 on: June 25, 2014, 12:33:33 PM »
Are there two steel plates together in the middle of the stack (look at the gap between the fibre plates) ? Or are the plates sticking and not sliding close together ?

Kev

Offline Maurice

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Re: Toustic's CB550F - A Swiss' first build
« Reply #139 on: June 25, 2014, 12:37:17 PM »
Oh ok. Well those bolts do need to be tight, careful these things are fragile, tight but not "oops" tight.

Probably a combination of them not tight enough and the rod (thing with a ball head) being pushed when you put the cover back on?

Hope you figure it out.

Offline Toustic

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Re: Toustic's CB550F - A Swiss' first build
« Reply #140 on: June 25, 2014, 01:08:55 PM »
That's how far I have to unbolt it for it to turn the engine over again.



 As soon as I tie it down further it spins free.

If my clutch spring plate bolts are not torqued enough, the pushrod will be pushed in when the cover is tied down and act as if the clutch was activated right? I just need to find the sweet spot I guess.

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Offline Toustic

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Re: Toustic's CB550F - A Swiss' first build
« Reply #141 on: June 25, 2014, 01:17:08 PM »
Fixed... I guess I was just too shy on those damn bolts. It's closed up and the kick works good. Now time for an oil fill

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Offline Maurice

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Re: Toustic's CB550F - A Swiss' first build
« Reply #142 on: June 25, 2014, 06:49:29 PM »
Good on you. Were you debugging the ignition without oil or did you rebuild the clutch in between?

Offline Toustic

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Re: Toustic's CB550F - A Swiss' first build
« Reply #143 on: June 26, 2014, 12:57:58 AM »
Good on you. Were you debugging the ignition without oil or did you rebuild the clutch in between?

Rebuilt the clutch in between.
I actually have that oil-pan leak, so I figured I might as well drain it to fix the clutch issue, and refill when I know it's fixed rather than tilt and unbolt, tilt and unbolt, etc..

Oh... and since I'm not too worried about embarassing facts:

I have two outlets in my new garage, one of them is connected to them main light switch, and the other one is on constant power. Guess which one I've been plugging my battery charger to...

Yep..  ;D

And there I was thinking my battery couldn't take a charge or that the charger itself was a p.o.s.
« Last Edit: June 26, 2014, 01:07:55 AM by Toustic »
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Offline vfourfreak

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Re: Toustic's CB550F - A Swiss' first build
« Reply #144 on: June 26, 2014, 09:11:13 AM »
Good on you. Were you debugging the ignition without oil or did you rebuild the clutch in between?

Rebuilt the clutch in between.
I actually have that oil-pan leak, so I figured I might as well drain it to fix the clutch issue, and refill when I know it's fixed rather than tilt and unbolt, tilt and unbolt, etc..

Oh... and since I'm not too worried about embarassing facts:

I have two outlets in my new garage, one of them is connected to them main light switch, and the other one is on constant power. Guess which one I've been plugging my battery charger to...

Yep..  ;D

And there I was thinking my battery couldn't take a charge or that the charger itself was a p.o.s.

Don't worry, I am sure we have all done something similar. If there was a "candid disclosure" thread, it would run to many pages.

So what voltage is the battery registering now ?

Kev

Offline Toustic

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Re: Toustic's CB550F - A Swiss' first build
« Reply #145 on: June 30, 2014, 11:30:16 AM »
So I have a fully charged battery (reading 13.1 earlier, now 12.8 after a few tries to turn it over).

I've checked my solenoid and it looks plenty healthy. Then I figured I'd check the coils to see what I'd get

This is what I'm getting when checking the primary coils



then I tried to check for the secondary with the 20K setting on multimeter and I wasn't getting any reading at the spark plug. I'm not sure I did it right (if you want to plug a few words about the right way to do so, please feel free). But Im not getting a reading. From neither plug and neither coil.

« Last Edit: June 30, 2014, 12:49:03 PM by Toustic »
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Offline vfourfreak

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Re: Toustic's CB550F - A Swiss' first build
« Reply #146 on: July 01, 2014, 10:37:07 AM »
Make sure you are testing two HT leads off the same coil (1 & 4) or (2 & 3). If they are still open circuit, remove the spark plug caps and test directly into the metal core of the HT leads.

Kev

Offline Toustic

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Re: Toustic's CB550F - A Swiss' first build
« Reply #147 on: July 02, 2014, 02:11:08 AM »
Make sure you are testing two HT leads off the same coil (1 & 4) or (2 & 3). If they are still open circuit, remove the spark plug caps and test directly into the metal core of the HT leads.

Kev

So...

I was testing the electrical and what now, because let's face it, what else am I supposed to do?
Turns out that I'm getting a 16K+ reading when putting the probes straight into the HT leads on both coils as well as a 4.8 OHMS reading on each, just nothing at the spark plug dust cap.

The problem I have with that, is that I'm not getting any reading at the B/W splice terminal of the wiring harness (subsequently the one from the off/run/off switch), regardless if the switch is on off or run (or off):



But I'm getting a reading at the coils' grounds:



As well as at the actual point's wiring:



So I think my problem lies here:




But since both screws are completely eaten, I can't disassemble the switch.

I've been looking up way to tell if you're stuck on the off position, but can't seem to find anything that's more CB specific (3 position switch), somehow most videos and instructions are based on ATVs and MX bikes... More recently a leaf blower owner was apparently very eager to find out what was wrong with his spark.

Anyways, that's another episode of my bike still at a standstill in the spark department.

Best,
Seb

ps: Sometimes the actual switch housing gets very hot after the ignition has been on for a little bit or when trying to crank it over a few times. Too much resistance? Corrosion?
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Offline Tews19

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Re: Toustic's CB550F - A Swiss' first build
« Reply #148 on: July 02, 2014, 02:15:52 PM »
Over here in the states that hand control goes on a 70-71 750.......
1969 Honda CB750... Basket case
1970 Honda CB750 survivor.

Offline Toustic

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Re: Toustic's CB550F - A Swiss' first build
« Reply #149 on: July 02, 2014, 02:58:24 PM »
Because I'm stubborn as all hell, I figured the kill switch housing was the issue.

Took the holding tab off inside the housing, and as soon as I did, those two popped out:



I felt releaved.. because it's exactly what I was hoping for.
Little soldering to fix it:



Got it all back together, plugged, and put the tank on...The rest is just one of the best sense of accomplishment I've ever felt in my life..

http://youtu.be/S-RoN5-RdQM
Yes, this is the very first start as you can see from my reaction

In case this is important info. That's me reaching over to get the choke off. She wouldn't start with the choke on.
« Last Edit: July 08, 2014, 08:21:53 AM by Toustic »
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