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Messages - DomP

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1
Anorak's Corner / Re: Koso gauge RPM set up
« on: Today at 05:52:49 PM »
It says its suitable for both, I think it's reading around half the revs on setting 2 which is 1 rpm signal per 2 ignitions so u wonder if I change it to setting 4 which is 1 rpm signal per 4 ignitions

2
Anorak's Corner / Re: Koso gauge RPM set up
« on: Today at 05:00:14 PM »
I'll try that Ted, I don't have a blue wire coming from my electronic ignition though, there is one with a blue shrink-wrap.

I'm worried about frying the gauge though.

*Well I threw caution to the wind, tapped into the blue sleeved wire from the Dyna S and got a rev reading!  Not accurate but I can work on that in the settings I think, it was a bit bouncy

3
Anorak's Corner / Re: Koso gauge RPM set up
« on: May 29, 2024, 08:43:47 PM »
The rpm is just the signal wire as the gauge is multifunction so has a supply and ground.  The signal connection is what myself and Roo worked out but could be wrong

4
Anorak's Corner / Re: Koso gauge RPM set up
« on: May 29, 2024, 08:16:04 PM »
I've tried 2 and I think I've tried 4.  I've got it wired to the black with white tracer coming from the one coil, I think that's correct.

It's terrible isn't it Ted, Koso are a pretty well known manufacturer too!

5
Anorak's Corner / Re: Koso gauge RPM set up
« on: May 29, 2024, 07:51:19 PM »
I wonder if this would work

6
Anorak's Corner / Re: Koso gauge RPM set up
« on: May 29, 2024, 07:07:57 PM »
Here's the set up guide.  Mine is an analogue rev counter Ted, I'm thinking of using the wrap around HT lead method of set up to see if that works but I'd rather the hard wired way.  There are no instructions for wrapping around even though a wire is supplied for it

7
Anorak's Corner / Re: Koso gauge RPM set up
« on: May 29, 2024, 06:59:55 PM »
I'm not sure I understand Ted.  The instructions are woeful, in the setup guide you have to select for 4 stroke and 4 cylinders by selecting options that go 0.5, 1, 2, 3, 4 but on my gauge there are .5 increments that don't relate to anything in the instructions.  It's to chose the number of ignition per cycle.  Clear as mud to me.

8
Anorak's Corner / Re: Koso gauge RPM set up
« on: May 29, 2024, 05:57:42 PM »
I'm running a Dyna S that came with it when I bought it, whether that affects things


9
Anorak's Corner / Re: Koso gauge RPM set up
« on: May 29, 2024, 04:56:07 PM »
Aftermarket tachos on cars used to connect to points side of coil

I'll check later but I 'think' I got it right

10
Anorak's Corner / Re: Koso gauge RPM set up
« on: May 29, 2024, 04:37:12 PM »
All wired up and everything works except the tacho, it's a TNT D64 Paul.

11
Anorak's Corner / Koso gauge RPM set up
« on: May 29, 2024, 02:44:41 PM »
I've fitted a Koso multifunction gauge to my cb550 with the rpm wire connected to the positive of one of the coils.  I can't get it to register anything on the rev counter regardless of the settings I've entered.  Has anyone else on here any knowledge of Koso gauges or similar set ups?  Im trying not to bother Roo again😀

12
CB500/550 / Re: Headlight reflector
« on: May 27, 2024, 08:37:06 AM »
The correct fitment LED replacement from Classic Car Leds seems the sensible option to me Ted, it'll save the charging system a bit and suit my other led upgrades.  It's 3mm longer but I don't think that will cause a problem in the original headlight bowl.

13
Project Board / Re: Doms CB550F1 project
« on: May 27, 2024, 06:18:50 AM »
Which O ring? Cover or pump to crankcase?

Pump to crankcase it appears Bryan

*thinking about it now I wonder if its the oil pressure switch, as its fresh oil its so clean its hard to trace but I may just remove it and put a couple of turns of ptfe around it carefully

14
Project Board / Re: Doms CB550F1 project
« on: May 26, 2024, 09:11:06 PM »
It's coming along nicely Roo, I'm looking forward to getting it painted but I think I'll get it on the road to get some miles on it first.  Definitely got an oil leak from the new oil pump o rings so whether I've pinched it when assembling I'm not sure.

15
CB500/550 / Re: Headlight reflector
« on: May 26, 2024, 08:19:34 PM »
Thanks Bryan, I've got an original style globe type bulb fitted currently

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