What did you do to or for or with your Laverda today?

will do Maurice.!!

Chris ,

Sold the TS and thought better put it in a bike to keep it safe, so I bought a 1970 V7 Special in Italy for 6K in April, the 3C was on for under 12K with a local dealer,they offered me 9K for the Guzzi and after some negotiation a small cash settlement in their favour.

Good deal :D
 
Gravelroad said:
@Clem: Think it's small movements from thermal cycling and vibration, cracking up the protective oxide layer of the stainless steel at the clamping points over and over again, causing constant material loss.
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If the collector is mild steel and the stubs are stainless then the contact area of the stainless will gradually rot away through Galvanic action...
 
Clem, forgive my ignorance what model is TOG, I've a stainless silencer for a 120, purchased from Coxie about 15 years ago I'll not use it again, yours for postage if it is the correct fit 
 
Hey Clem

Yeah, stainless may not stain with rust, but it'll still corrode given the right conditions. An exhaust system is a pretty hostile environment for any metal. Heat cycles, moisture, acidity, etc.

As Andy says, you probably have some galvanic corrosion going on. But you don't necessarily need dissimilar metals. Galvanic action can also occur in similar metals (or even in different areas of the same piece of metal) by virtue of dissimilar conditions. Variations in oxygen levels due to one part being exposed and another part being covered by a clamp or inside another pipe, such as a slip-on joint, can give rise to an electrical potential between the two areas. The anode that gets eaten away is the part that's covered up, so the system can look OK from the outside while it's being eaten away from the inside. It's often referred to as crevice corrosion.

Make your exhaust system from something non-metallic, like terracotta pipe, and you'll be fine.  :D
 
nice one cam, terracotta it is then.
all parts are stainless, collector, silencers and clamps, the pipes I may have used (years ago) with a steel collector, but I cant actually recall, and they were not new when given to me 20+ years ago, I also add a smear of copperslip between the joints to aid disassembly, might that have helped the galvanic reaction?.

Its not really of any worry, since I am replacing the rotten bit with tube of 1.5mm thickness, which is heavier than stock (what was on the shelf) OD is correct ID is .5mm smaller,and the unrepaired silencers have lasted 20+ years so the repaired ones might make 30 if I use the bike as heavily, which I wont, anyway, by then I will be 95

CLEM
 
Sat on it for the first time in almost 3 months after it went away to have some race prep.

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Colour is growing on me
 
Installed a set of these Progressive springs into the 750  8)

20mm  preload bush (conduit) 200ml of 10w , man what a difference through the bars  ;)
 

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polished up the RHS side panel and fixed a new "Mirage" badge where the previous fibreglass copy had fallen off in Spain, the new one was from Badge Replica's (AUS) and is indistinguishable from original, did they make them for moto Laverda in the first place?

Also fitted a nice new/used and mirror polished alternator cover where the old one was already a bit dinged and cracked but was finished off in a parking shunt on gravel when near Limoges (F) earlier in the summer.

That has used up my stocks of good used covers so I need a few more two at least maybe more, all the ones I have dinged and good are genuine factory parts and fit, a few years ago pattern ones were horrendously bad, with the outer diameter being about 3mm to big, leaving an ugly step, where it meets the inner alt cover, rubbing internally of the alternator nut and lock washer and the Laverda logo was horrible as well. So where today as we slide into 2018 can I buy the item, in very original form, but from aftermarket suppliers, I am assuming that factory ones are no longer available?
CLEM
CLEM
 
Haven't done anything to my Laverda today. Instead of watching Sydney and Melbourne banging on about who had the biggest and best NYE fireworks, I tuned into the French news on SBS (multicultural TV channel here in Aus) and had the privilege watch of watching Emmanuel Macron's address to the Republic of France. Wish we had statesmen of the standing here in Australia.
 
Same as yesterday book ended the New Year, took the Cico out on the water yesterday found a Hayabusa  so had a little fun and today took the 3C for a run out the Putty and clocked over 30000mile stone. .
Bugger all traffic hardly even any bikes out there... found one British rider ........then bumped into one of Marties mates on a chook chaser thingy today told me he had been out on his Ducati over xmas so not sure why he would want to be chook chasing today on the Putty.

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Thought it was time to go back to the solo seat, 5-minute job as its been on before. 2 days later its back on, tried to fit an anti vib mount on the rear and it keeps coming out so I arildited the steel sleeve into the rubber bush.It still kept snagging and coming out. It then took a days worth of dramaling the homemade catch to work, couldn't see where it was snagging but in the end, it's now fitting fine.Simple thing fitting a seat, NOT.
 
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