Author Topic: 1976 CB550F1 (what have I let myself in for) Project  (Read 11871 times)

Offline eight0

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #315 on: April 05, 2021, 07:29:52 PM »
Haha. It's true, I feel much much better now.
Thank you Julie!

Offline eight0

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #316 on: April 06, 2021, 07:44:13 PM »
I've just drained the oil and as suspected all the bits of the kick shaft are in the sump.

More worryingly, I found this in the sump.

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Offline Nurse Julie

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #317 on: April 06, 2021, 08:49:29 PM »
Looks like black mastic / gasket seal type stuff. Are those glittery bits I can see as well?
« Last Edit: April 06, 2021, 08:51:00 PM by Nurse Julie »
Im a Nurse, trust me, this won't hurt.....much !!!

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Offline eight0

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #318 on: April 06, 2021, 08:52:41 PM »
Might be, but There's bits of metal in there.

Mm no not gasket seal, I used very little hondabond anyway. Those bits on my finger are metal and magnetic.   :(
« Last Edit: April 07, 2021, 07:26:37 AM by eight0 »

Offline eight0

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #319 on: April 07, 2021, 11:06:33 AM »
What do you think it is? I guess its hard to know. I didn't try to run it with the kick start in bits so it's not that.


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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #320 on: April 07, 2021, 11:13:48 AM »
Looks like it's broken off something (staing the obvious from me  ::) )but appears to be bent and of softer material,  that's as opposed to geabox teeth that usually chip off and retain their form.

Might be worth rinsing it and giving us a clearer picture on white paer to get a better look and see if someone can give more positive I'd.

It "looks" more like kickstart component initially and could be a bit sheared from there as it's quite a high torque right down in the centre of leverage, that's most likely to be related to what you felt when using the lever.

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #321 on: April 07, 2021, 11:16:13 AM »
Oops, lost a pee in that "paer" up there  :)

Obvious or not,  but PAPER.

Got it that time  ;D

Offline eight0

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #322 on: April 07, 2021, 11:18:57 AM »
Ha yeah got it.

Ok yes it's not the best picture. There were more smaller bits in the sump, like crumb size if that makes sense. Not loads, but as I only ran the bike for 1 min max, enough.

I'll wash as much as I can and put it on some paper and get a better picture. My fear is bearing but not sure what could cause that so quickly.

Offline Oddjob

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #323 on: April 07, 2021, 11:34:17 AM »
The black stuff could be graphogen, I seem to recall you used a load of that stuff, if the bike only ran for a minute or so it wouldn't have had a chance to dissolve into the oil. As for the small metal particles, check the kickstart shaft for shiny patches as it could just be that as it broke free. As it's right over the sump anyway it would just drop into the oil without going through the pump and filter.
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Offline eight0

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #324 on: April 07, 2021, 06:37:47 PM »
The black stuff is definitely graphogen, not worried about that. I can't see any metal on the gears through the sump, they look clean.

There is a mark on the kickstart shaft and a small mark on the case on the inside which may have been caused by it when it came off.

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Aside from the small bits in the earlier photo there's lots of small pieces of metal as well, not powdery sparkle but sand grain sized. Some slightly bigger and I can see they are dark on one side and shiny on the other. I did notice the kick start gear that is still in there had some shiny pieces on the teeth. I neglected to mention before I started it and was trying to get oil to the head I ran the starter for a bit whilst the kick starter was half engaged caught under the rearset, so the gear was half engaged. It wasn't noisy just tick tick tick.. That could have been what caused all the small bits of metal I guess?
« Last Edit: April 07, 2021, 07:08:08 PM by eight0 »

Offline Oddjob

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #325 on: April 08, 2021, 09:58:35 AM »
If you can get the kick start gear off I'd certainly recommend it, there are some nicks on the teeth which TBH would worry me a bit until I inspected them, I'd also turn the gearbox as you watch from through the sump, it could be that something broke off, got wedged between the kickstart and the gear and as you forced it through with the kickstart lever it was enough to pop the circlip off and then everything came loose, as it did so it caught a few things like the crankcase etc
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Offline eight0

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #326 on: April 08, 2021, 06:45:01 PM »
Thanks Ken.

Here's what the gear looks like, very worn. Not sure what's gone on here. I assume it's not supposed to look like that. Is there supposed to be a thrush washer between that gear and the case?

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These are all the parts I had.

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Offline Erny

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #327 on: April 08, 2021, 06:47:26 PM »
Maype PO riding while kickstart lever was in position with engaged gear?
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CB550K1 US model (1975)

Offline eight0

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #328 on: April 08, 2021, 06:52:27 PM »
Wellll, that might have been me as per my earlier post. Turning it over to get oil pressure the Kickstarter was slightly engaged caught under the rearset. That certainly would have caused the tooth wear.

That in turn could have caused bits of metal in the kickstart gears and then binded them causing the circlip to pop off.

I'm happy if that's the reason because it's a simple fix. Wondering if I should button it up as is, run it for a minute again, drain the oil again and check the sump to see if there's more metal.





Offline eight0

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #329 on: April 12, 2021, 03:36:17 PM »
I've changed the oil and ran it again. No more metal.. must have been the kickstart (Phew). The charging is also working!

I'm still waiting on some things before I can ride it. I've ordered a dual 'airbox' which is almost like pods but nicer from  http://www.steeldragonperformance.com/air_boxes_7.html but it hasn't arrived yet. No point in trying to tune it before they arrive, and I know they don't run as well without the stock airboxes so I won't be asking for advice on Jetting or tuning on here!
I have gone up to 40 on pilot  and 110 on mains though which should put me in the ballpark before I embark on plug chops etc

I need to fabricate a plate bracket which will have to be side mounted.

I need to get the exhaust tip welded onto the reducer and the bracket mount to the pipe. Can't be riding it with it all hanging from the studs.

Aaaand I've just sent details through to footmanjames for an agreed value insurance quote.

Here's a picture just after I recently ran it, It does have the righthand foot controls on now.  I was too excited to film anything but I will post a video up soon. And yes I know the points cover is upside down.

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« Last Edit: April 12, 2021, 03:44:42 PM by eight0 »

 

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