Author Topic: CB 500 Four (1972?) Full Restoration (Read 138561 times)

MickB · « **Reply #750 on:** June 15, 2015, 02:18:51 am »

Thanks BJ, I remember taking the paint off prior to the engine install and also where it grounds at the coils.
I'll remove the engine mount and coil area again and double check to ensure a good contact.

bryanj · « **Reply #751 on:** June 16, 2015, 01:18:33 am »

You have a multimeter just do a resistance check

MickB · « **Reply #752 on:** June 16, 2015, 01:21:09 am »

Good idea, I just bought a new (better, multimeter about an hour ago) I'll look on YouTube to see how to do the test. The old meter didn't do continuity with a buzzer.

I also bought a larger connector for the earth lead from the battery to frame, the old one was too small.

bryanj · « **Reply #753 on:** June 16, 2015, 11:00:53 pm »

If you set your meter to measure volts on the 20 volt scale and put the black lead on the battery negative then the red lead to the battery pos to get a base reading you can then check at all the positive connections (dont forget to turn ign on after you checked at switch input) this will tell you if you have a bad connection as you shoild not loose more than 0.5 volt (and that is a lot) at any point.

To check your grounds get the base voltage and then leave the red on the pos terminal anf put the black to the ground cable then engine case, agin there should not be a lot of difference.

You can also do resistance checks BUT NOT with a battery in circuit or your meter may go bloie

MickB · « **Reply #754 on:** June 18, 2015, 02:48:33 am »

BJ really appreciate the multimeter lesson.

MickB · « **Reply #755 on:** June 21, 2015, 11:50:56 am »

Didn't have much time over the week end, however solenoid all good bridged the terminals and the starter mirror spun the engine. Had the 2 red wires on the wrong solenoid post, but no power to the loom. I'll have to check the wiring connections as there's no power except to the solenoid.
Finished the ground wire to the engine mount.
Pictures later.

MickB · « **Reply #756 on:** June 24, 2015, 12:59:43 am »

Question: What is the gauge of the red wire going from the solenoid to the fuse? Also what is the gauge (I think it's 3-4mm) for the rest of the loom?

I'm thinking of totally rewiring the entire plate.

calj737 · « **Reply #757 on:** June 24, 2015, 04:32:56 am »

Are you stalling, Mick? Shouldn't you be riding by now? Or is this last push due to inclement weather that is preventing you from riding anyway?

I don't know the metric equivalent to the wire gauge, as we can only generally get AWG (American Wire Gauge) sizes here. I use 16-18 for current carrying circuits if that's any help.

What's prompting you to want to re-wire the electrical plate?

MickB · « **Reply #758 on:** June 24, 2015, 04:36:09 pm »

Pressssure, time is the issue, currently only getting a half day a week to work on it.
I think I'd be better off rewiring the plate as I have no power going to the loom.
Considering I've put new wiring through the whole bike it makes sense to rewire the plate to me.

I've done a continuity test on the plate and all good. I'll plug it in again and do some more tests.

MickB · « **Reply #759 on:** June 25, 2015, 06:27:42 pm »

Replaced some of the male and female connectors, tested continuity on all connections all test ok.

All wrapped up all continuity tests ok.

MickB · « **Reply #760 on:** August 08, 2015, 02:42:57 am »

Well after being busy for the last 1 ½ months I'm back. Had another 3 hours today trying to make the 4 into 2 exhaust fit with no luck. Not a huge fan of 4 into 1 exhausts but I found this on eBay in Oz and its stainless, it seems like a good deal and anyway I just bought it.

So hopefully get back on track.

calj737 · « **Reply #761 on:** August 08, 2015, 04:00:37 am »

Welcome back, Mick! What seems to be the issue on the 4:2? Some others here in the states also bought that system you've listed. Seems a very good price for a decently made product.

MickB · « **Reply #762 on:** August 08, 2015, 04:04:27 am »

Hey Cal, I think the 4 into 2 I bought may have come from a 350 or 400, I was told it would fit a 500. Buyer beware.

The price is fantastic, stainless steel! Compare it to chrome.

calj737 · « **Reply #763 on:** August 08, 2015, 04:07:53 am »

Ahhh! No possible way that's going to fit if it's from one of the those bikes. Hopefully you can sell it on with the correct Fitment notes.

MickB · « **Reply #764 on:** August 08, 2015, 04:20:32 am »

Only a guess on my part, for all I know it may have been made for some other 4 cylinder bike.

As for on selling its been heated up and adjusted so many times it's not as pretty any longer.

MickB · « **Reply #765 on:** August 13, 2015, 08:01:44 pm »

Well exhaust is on, finally! I would have preferred 4:2 but I'm happy the 4:1 stainless looks good on the bike.

Finalise the wiring tomorrow, Ivan the Ace Mechanic is coming over to assist.

Tews19 · « **Reply #766 on:** August 13, 2015, 08:05:08 pm »

Oh we need a video of the sound of the bike with that exhaust!

onetruepunk87 · « **Reply #767 on:** August 13, 2015, 09:05:28 pm »

Looking good Mick! Let's see a side shot of that exhaust!

SOHC4 Cafe Racer Fan · « **Reply #768 on:** August 13, 2015, 09:54:06 pm »

Excellent!

MickB · « **Reply #769 on:** August 13, 2015, 10:33:23 pm »

Thanks for the compliments, I must admit it does look good and appears to be very well made.

Still lots to do- WIRING, tappets, finish prep and paint tank, timing, shorten brake hose and bleed brakes. All smallish jobs so hopefully in the next few weeks.

Petrol in tank then push button.

Side view

There 3 settings for the exhaust, quiet, louder and straight through (which I'll probably use).

calj737 · « **Reply #770 on:** August 14, 2015, 03:45:17 am »

Mick be sure to wipe that exhaust down well before you firing it up. Any reside of grease will discolor against the stainless once the pipe heats up. Member TRAD bought a MotoGP 4:1 and actually ran ScotchBrite pads over it in varying coarseness to give it a semi-lustre and polish. Looked stunning! Short of a chrome, but much nicer than a polished. He's got a few build, so you'll have to sort through them if you're interested in it.

MickB · « **Reply #771 on:** August 14, 2015, 03:47:50 am »

Good tip, thanks Cal

calj737 · « **Reply #772 on:** August 14, 2015, 03:51:07 am »

Oh, and by the way, looking really good! Do you have polished tappet caps or are you running those black ones? #1 exhaust looks a bit scuffed up?

MickB · « **Reply #773 on:** August 14, 2015, 04:01:09 am »

Black tappet covers to highlight along with cam covers and breather cover.

All black parts to be repainted as they've been off and on too many times.

Scuffed, whaaaat, just went and had a look at no1 pipe, looks ok, I can't see any scuff marks. Also after the scotch brite....

calj737 · « **Reply #774 on:** August 14, 2015, 04:45:01 am »

not the pipe, the tappet on #1 exhaust

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Author Topic: CB 500 Four (1972?) Full Restoration (Read 138561 times)