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Messages - thomaspigeon

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46
CB500/550 / Re: About to start my project, but it doesn’t...
« on: September 06, 2020, 09:42:45 PM »
Hey,

So I spent a couple of hours on the bike today and I figured out a couple of things :
1) not all the spark plugs were firing, some were dead or even the wrong ones! Now I’m about to order some new ones but I’m not sure if I need to take some resisted one or not. I’ve put a photo of my plugs below
2) the electronic ignition was slightly off, apparently the mark F14 need to be aligned with the mark on the crankcase when the LED is switching on. If someone can confirm it needs to be the mark on the left of the F that would be great.
3) I’ve followed your topic to set up the float properly @Julie. Hopefully that will work and not overflow.

Looking forward to get it started!
Thanks for your help everyone

Tom


47
CB500/550 / Re: About to start my project, but it doesn’t...
« on: September 06, 2020, 03:36:41 PM »
Quote
Pretty sure most manuals will explain how to set static timing with a simple test lamp arrangement it's not as accurate as using a timing light but certainly good enough to get her running.

I'm using an electronic ignition with an integrated LED, so that should be ok

48
CB500/550 / Re: About to start my project, but it doesn’t...
« on: September 05, 2020, 09:56:04 PM »
Thanks for your quick reply everyone! I'll have to try all of this tomorrow.

About the height of the float, how do you mesure it? Carb upside down with the float sitting on? It looks like the floats are getting stuck open very easily.

The previous owner took off the airbox and removed the brackets of the bike, so that will run on pods (I know, not ideal). I'm waiting for some K&Ns but I still have the previous cheap chinese pods, that should do for starting it.

I'll test the compression, and I'll have a look if I have a spark on all the plugs. I know that I have a spark on the cylinder #4. Also as I said, the engine should be a runner.

@nurse Julie , the little pod is to avoid the oil to get straight out I believe...

Tom


49
CB500/550 / CB550 K3 custom project
« on: September 05, 2020, 08:34:42 PM »
Hello everyone,

I bought this 550 K3 in parts and putted it back together.

I’ve redone the wiring, got a spark (electronic ignition). But I guess I can have the timing wrong.

I’ve got the carbs ultrasonic cleaned, I change most of the bits inside apart of the needle. Carbs were overflowing with the float at 22mm so I putted them at 24mm (weird?!). Also those carbs are from a 550 f1 weirdly.

The engine was in 1 piece and the previous owner told me it was running.

So I’m guessing the carbs are messing around, how can I be sure some fuel is running into the engine ? Also maybe the spark is not strong enough or wrongly timed...

I’ve got a video that you’ll find below.
https://youtu.be/W0aizX9RmVA

Let me know what your thoughts are.
Thanks
Tom

50
CB500/550 / Re: Re-wiring diagram of my CB550 K3 is that correct?
« on: August 26, 2020, 10:50:38 AM »
Thanks for you reply deltarider. I know it's black but for some reasons I've put it in orange. I can't follow a regular wiring diagram as I bypassed a lot of things like the starting motor safety unit, I also changed the reg and rec for a single reg/rec unit and I also changed the points for an electronic ignition system. That's why I ask for some external point of view about what I've done as it's not really standard

51
CB500/550 / Re-wiring diagram of my CB550 K3 is that correct?
« on: August 24, 2020, 10:28:10 PM »
Hello everyone,

I’m rebuilding a CB550 K3 that I bought disassembled. I’m rebuilding it slowly and I’ve just done the re-wiring for the ignition and charging system. Before I start it and maybe fry something, I wanted to submit this diagram. I don’t want to see this old lady becoming a bbq  ;)

Let me know what you think.
Best

Tom

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