The point is, with such an apparently obvious benefit, and the solution to lack of filtration being known, it is very odd that no dealers or Laverda specialists stepped in to the void and offered the simple solution which I think many people would have gone for. Even now, nobody offers it, unless others know different. I don't agree that it is a simple diy fix...I certainly wouldn't attempt it.I like the idea..And I suspect that there are engines that have reached high mileages, with mineral oil changed regularly and normal tlc without the need for such filtration. Anyway, nobody offered it, are now unlikely to, so that's that!
Well - I think I answered that in the last part of my comment above (and some others commented the same way): demand to low, cost to high, different solution paths :some above the engine, some in the fairing, some behind the engine, some even somewhere close to the battery tray, one at least routed it back to the Y of the collector (exhaust; where the collector splits into the two pipes to the mufflers), one has it at the side of the downtube of the frame (me). So - which solution should be chosen?!? All of them are compromises (heat, length of oil-lines) and prone to people disliking or criticising them. And then there are potentially different options for the 120° engines and for the 180° ones...
I have done the conversion on my bike with my brothers help and it was fairly easy to do (he sold it btw. to customers in the 90's, but also just maybe a handful of them). We just had to buy a filter plate, an according filter and get two lines made that go from the left oil-line connector of the engine to the filter plate and one from the filter plate up to the oil-cooler.
Mounted everything during an oil-exchange and mounted the filter plate to the triangle that connects the engine to the left down tube of the frame (slightly longer screw and a distance piece made of an alloy tube). Job done. Costs were (at that time) somewhere around 200 DM (maybe 200€ today). If done by a dealer that needs to make profit out of it, it would have cost at least 3 times that much, considering he needs to consider a solution, get the parts made, test it over several thousand KM, proof it's working, get maybe 30 kits made and market them, which might take him 5 years to convince the Laverda owners and sell the last one. Not really a big business, right?
If there is interest for my solution, I could consider to make some more hoses so you only need to install the filter (will replace the oil-lines this season after 25 years, just to be sure they are not leaking due to ageing rubber...). The plus of my solution is, that it is maybe one of the easiest to install and maintain (super easy cleaning, no oil messing on the engine or somewhere else) and is also exposed to wind, which gives potentially even a bit extra cooling. The downsides are that it is exposed and might not satisfy your eyes. People said it might get off the bike if you drop it onto the left side, but I think that a) this is your least problem then and b) I dropped the bike twice on the left side, the filter stood in place. So...
