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Messages - SteveW

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331
New Member Introductions / Re: New member UK 500
« on: May 25, 2020, 11:55:41 AM »
Check your main battery ground, it looks like you have the same problem as I had with my 74 550.

In your pic, see below. It looks like the green earth wire has overheated and melted. This happened in multiple places in my loom. Its caused by a poor battery ground connection, so a lot of current is using the only other path it can, the small green earth wire.

The second pic below is my loom, this is what to look out for:

332
New Member Introductions / Re: New member UK 500
« on: May 25, 2020, 09:04:27 AM »
Isn’t the fuel tap on the wrong side?

333
Misc / Open / Tank rust removal
« on: May 10, 2020, 04:09:28 PM »
This is on my RD350LC, the tank is in a very bad state so I thought I’d try the Electrolysis method.

Some bright spark has filled the tank with liner in the past that over the years has broken up into hundreds of parts. I removed the fuel tap and blanked the hole off, then spent hours hosing out the tank with water and probably got about 90% of the liner out.

Filled the tank to the brim with water and a 3/4 of a small pot of baking soda, battery charger negative to the tank and an old cleanish Allen key in the water connected to positive.

It’s bubbling away at the moment and a hell of a lot of rust is coming out, either bubbling to the top or sticking to the Allen key which I clean every hour or so.

Only thing to be careful of is that hydrogen gas is produced so must be done outside and to keep the tank topped up with water and agitate tank now and then.


334
CB500/550 / Re: CB550 replacement battery ... gel / agm / other
« on: May 10, 2020, 03:59:11 PM »
I’ve got a bog standard Yuasa on the 550, has been fine for 2 years and still going strong.

I have a Motobatt on my Fireblade, it’s good as long as you have it on a trickle charger. Once Motobatts go flat they seem to struggle to recover, have had to send two back for replacement under warranty.

335
New Member Introductions / Re: 1977 CB750F2 Comstar wheels
« on: May 03, 2020, 09:35:30 AM »
Just a word of warning, I think Cadmium is very highly toxic and plating with it is now banned.

Could be dangerous if you try to remove it.

336
CB350/400 / Re: Worst waste of a 400 you've ever seen?
« on: May 02, 2020, 06:42:45 PM »
Holy crap, just off to rinse my eyes in bleach

337
Misc / Open / Re: Plug leads
« on: April 24, 2020, 12:40:55 PM »
This is how I fixed mine, following Ash's guide with a slight difference.

http://www.sohc.co.uk/index.php/topic,14939.msg122821.html#msg122821

Been fine for 2 years and over 1000 miles now.

338
CB500/550 / Re: Very odd oil leak
« on: April 19, 2020, 11:03:13 AM »
Throttle cables have not been oiled and gear shaft seal is new.

339
CB500/550 / Re: Very odd oil leak
« on: April 18, 2020, 05:27:03 PM »
I’ll have a look tomorrow and take some pictures. It’s doing my head in  :(

340
CB500/550 / Re: Very odd oil leak
« on: April 18, 2020, 05:10:42 PM »
Breather pipe is fine.

This possibly sounds far fetched, but could oil get past the valve stem oil seals. Then down the valve and back all the way into the carb bowl. Then leaking out of the carb bowl seal?

The rest of the carb is clean, it’s just the bowl that has oil on it.

341
CB500/550 / Re: Very odd oil leak
« on: April 18, 2020, 04:50:05 PM »
Breather pipe is connected at the top of the engine.

342
CB500/550 / Re: Very odd oil leak
« on: April 18, 2020, 03:54:46 PM »
Quote from: Nurse Julie on April 18, 2020, 03:38:08 PM
That's one of those 'Anti gravity side stand oil leaks' 😁😁😁😁How bloody peculiar. Its not a loose tappet cap is it, that's the only thing higher than carb #1 which is in a vertical line with the sprocket cover below? Or is it the cam end cap leaking and tracking , they are very prone.

Tappet caps and cam cover are bone dry.

343
CB500/550 / Re: Very odd oil leak
« on: April 18, 2020, 03:52:38 PM »
Quote from: sye on April 18, 2020, 03:41:52 PM
Could it be a little oil draining from the airbox?

The breather pipe is not connected to the air box at the moment.

344
CB500/550 / Very odd oil leak
« on: April 18, 2020, 03:18:32 PM »
Obviously haven't used the 550 for the last few weeks.
When I last rode her I turned the fuel tap off about 1/4 mile from home so the carbs are empty just as I get home.
In the garage on the center stand there is no sign of leaks. I took the bike out the garage the other day and left it on its side stand for a few hours, as I needed the space in the garage to rebuild a 1963 Vespa engine.

Came to put the 550 back in the garage and noticed there is a tiny trickle of oil running down the left hand side of the engine, down the middle of the cover that covers the front sprocket. Had a look and can see that the oil is dripping down from the bottom of #1 carb float bowl. The outside of the float bowl is covered in it?????

Its definitely oil, no smell of petrol and the carbs are empty of fuel anyway. I cleaned it up, put it on the centre stand, checked yesterday and no oil leak, only does it on side stand.

Any ideas? Bike runs fine by the way.

345
Misc / Open / Re: The Covid Thread
« on: March 24, 2020, 06:17:11 PM »
I worked for Racal-Dana in Maidenhead, then we moved to Slough and became Racal Instruments. Started my electronics apprenticeship with them in 1984 and left 1997.

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