Copper washers

Ah, now there's an interesting question.  Generally speaking, as far as I can tell the RG bikes have 3 copper washers out of the factory.  I base this on stripping two engines which were genuine known never pulled apart and both were the same. 
The one I consider important is I think the rear main bearing stud on the left hand side.  This stud hole carries the outlet of the oil pump, so if there is any pressure at all in the oil system, that's where it is.  The other two are (again from memory) front main bearing left side, and mainshaft left side front (the one with the clip for the pickup wires).  I can not see any real logic for the use of these two, I look forward to the pearls of wisdom from our experienced forum'ers.
Cheers
Steve B
 
you have a very short memory steve,
I gave you my own personal (not proven) theory, and here it is again.

on 180's the copper washer seals the outlet from the oil pump, and so that the thermal forces do not interfere with that main bearing, there is another one on the other side (ie same bearing), then the thermal expansion/contraction forces will remain the same across that individual bearing.

I have  no idea what the third one is for on 120's, probably some form of gay civil partnership mark I would assume.
CLEM
 
CLEMTOG said:
I have  no idea what the third one is for on 120's, probably some form of gay civil partnership mark I would assume.
CLEM
Click to expand...

Ha,ha,ha,ha,ha,ha,ha,ha,ha,ha,ha
 
CLEMTOG said:
you have a very short memory steve,
CLEM
Click to expand...

It's not short, just that I re-format and install a new operating system every couple of weeks!
Next re-format is this weekend at the Alpine Rally, heading to the Snowy Mountains to camp in minus 12C temps, drink Guinness and Stones.
The proper SFC won't quite be running, so I'll take the Bimota.  Always use the correct tool for the job.
That should do it.
Cheers
Steve  :D
 
It should be epic Steve,its the best start to the ski season for a very long time.Take care,hope the layers of thermals fit under your riding suit,how many sleaping bags are you taking
 
I wish I could come with you Steve, never did mond a bit of cold camping, the ILOC do it every January, they could it the HB rally (hard bastards), when it should have been stupid bastards,

Mind you make sure that Christiainne wraps up well, she doesnt have the advantage of you and I (too much fat)

CLEM
 
Vince said:
It should be epic Steve,its the best start to the ski season for a very long time.Take care,hope the layers of thermals fit under your riding suit,how many sleaping bags are you taking
Click to expand...

you need as much under as on top!!!!!!!!!!!! -6 highveld winter nights courtesy of the SADF
 
Glad to hear that the Alpine Rally is still happening. I did it a couple of times in the '70s. Great mob of people there freezing themselves around the fires. Shawn Giles (multi Oz superbike champ) dad Paul started that rally if I remember right.
 
Christiane will be snug as a bug - at home!  Camping in the freezing cold, or even riding for that matter is unfortunately not really doing her arthritic condition much good.
Always a bike here for you Clem, if you find yourself here.  As much fun as the Alpine is though, I would advise coming at a different time of year! ;-)
Not much fits *under* my riding gear these days, I've got one of those shrinking cupboards.  Yes it was old man Giles that started the Alpine, and Shawn even attands now and then, he was there last year (or was it 2 years back) forthe 40th anniversary one.  It still alternates between the Brindabella site with a fair bit of bush bashing to reach, and the Yarangobilly site just off the Snowy Mnts highway (this year).  Would not take the Bimota to the Brindabella site, too much plastic to destroy, but have taken both Jota and RGA.  I find it great fun turning up on something truly impractical, especially when most take Beemer GS's, or chook chasers, or postie bikes or the like.

Cheers
Steve B
 
The use of more than 1 copper washer seems to be somewhat mysterious. Taking the case of my 3CL engine apart brought up 2 of them. Of course 1 from a unknown spot.

After checking several manuals and parts lists, the only hint I found is in the parts list for the very early triple engine and Andy Wagner's online katalog.  There is only 1 washer together with a dome nut to seal the outlet of the oil pump. Other parts list etc. do not even mention copper washers.

Do not see any other reason for the use of a copper washer than sealing purpose.

Wish you very enjoyable Withsunday weekend

Florian
 
On the early bikes there was a copper washer at the left rearmost 8mm stud. Last time I had an engine down..I looked and due to the cases and bearing behind the clutch basket..it made sense. I don't remember what it was about the stud that made in vulnerable for oil to pass down..but it is needed.

As an alternative..you can use an 8mm nylock nut and aluminum crush washer..as used on the valve covers for a Porsche 911. Lots of oil to control there too. It keeps that rear stud dry..for whatever internal reason.
 
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