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Showing content with the highest reputation on 02/09/2020 in all areas

  1. And another chance for me to mention the corrosion issue with carbon fibre and aluminium alloy. They must not be in direct contact but well separated, preferably with electrically insulating washers etc. Otherwise those lovely Ohlin mudgaurd mounts will corrode to dust. Carbon fibre is not plastic.
    3 points
  2. Hi, on 2nd thought your comment deserves a more detailed reply. The name cold start is not well chosen. Start-up fits better. The reason why the start-up function is needed and why it's temperature and to a lesser degree revs since start dependent is the following. After pressing the starter button the injectors begin injecting fuel, the nozzle and the fuel jet are pointing towards the opposite side of the intake pipe . At that time there's almost no air flow and a very low air speed moving through the intake, hence the first fuel shots are creating a fuel puddle on the opposite surface of the intake tract. A surplus of fuel, which is caused by the trim values, during that period ensures that enough fuel gets into the combustion chamber to achieve a ignitable mixture. This effect is engine and air speed dependent, so a temporary enrichment for some revs is needed at any engine temperature. Once the engine is turning over at a higher speed, the resulting higher air speed moves more of the injected fuel into the combustion chamber. And the increasing temperature of the engine increases the evaporation of the fuel, again resulting in more fuel getting into the combustion chamber. My current conclusion, based on the measurements, is that the critical values in the start-up table are those used during the first 10-50 revs. Once the engine is running on its own the start-up table values can be replaced by fuel engine temp trim table. Cheers Meinolf
    3 points
  3. Interesting.In 35 years of mounting carbon guards to Ohlins forks I've never seen this and have never even heard of it. My bikes all have carbon parts mounted to ally everywhere, to swingarms petrol tanks exhaust systems. never had an issue. Same working on commercial jets, aluminium fitting brackets washers etc mounting carbon flight control panes etc, never had an issue. I've even had race bikes with carbon tanks with embedded aluminium fuel fittings etc without issue. Ciao
    1 point
  4. I talked to the guy (seller) the other day..Highly vague and too suspicious for me to want to deal with..says it has always been worked on by his " Friend" who is manager at Beverly Hills ...from my own personal experiance that alone was enough to make me run away.Ducati...
    1 point
  5. Well, mine has 2700 miles as each guy that bought it could not handle the low bars and kept taking it back to the dealership. Then I got it last year and had to have back surgery so I can't ride it until later this year now, so on it goes.......................
    1 point
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