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Chris Wilson

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Posts posted by Chris Wilson

  1. I have a Roper plate installed in a Bellagio and fill the oil to the underneath  of the plate.

    Never had an issue yet with this and it's a little more than what the dip stick allows.

    I think that semi dry dumping with a barrier like this allows a different oil level to be well tolerated. 

    My bike when ridden hard is prone to oil expulsion from the exhaust and since installing Peter's plate this has stopped.

    So with the Bellagio it's not so much that you fear uncovering the pick-up under acceleration but it's more about reducing oil foaming and overwhelming the condenser.

    Why this short stroke engine is prone to whip creaming the oil is a mystery to me but it does in it's standard format.

    Chris.

  2. 3 hours ago, Pressureangle said:

    Simple, really once it's pointed out. The engine has a crankshaft angle at which peak cylinder pressure has the greatest effect (about 20* ATC iirc) so it's not the ignition that matters, but how quickly peak cylinder pressure is reached. Ignition timing is moved to accommodate the rate of burn to get the peak where it does the most work.

    Yep, got it!

    Don't know why I didn't before.

    Thanks, Chris.

    • Like 1
  3. Hi Docc, 

    There are already numerous threads on this site about this but they all say to retard the ignition point when adding a second plug but surely you would advance it because the flame path is shorter and now symmetrical?

    No expert on where to advance but to me it has to be mapped preserving idle and keeping watch on pre-ignition. 

    Got the feeling that I am going to learn something here!

    Chris.

    • Haha 1
  4. Wow, I must bathe in my ignorance for I have only ever had a minor recall on my K75 with an unneeded steering damper and that is for about 20 vehicles owned over a 45 year period.

    Nothing major has broken except  for a radiator top tank after 10 years of city driving and about 280,000km.

    Even had a GTL 500 Ducati that never broke down.

    My ask is, if all these modern vehicles seem prone to recall and costly parts replacement then how are they driven?

    Chris.

  5. Rubber mounting is the 'go to' here, the Bellagio has large rubber grommets inserted into the top triple tree and it works well.

    The key is here as Docc says to to reduce the source or post engineer it with isolation.

    Isolation usually involves the transmission of the vibration through a material that has its harmonics at a different level than the source and thus it absorbs rather than resonates.

    Its a long path between the source ( crank wieghts) and the where its metered (the bars) and surely someone smarter than me could think of someting along that path that may help.

    If not, Gel filled Bars anyone?

    Chris.

    • Like 1
  6. 4 hours ago, po18guy said:

    Rev the engine in neutral and see what the entire bike does. In slow motion, one bar goes up and the other goes down. In that same plane, secondary imbalance wants to shake the bar ends up and down, except at 2X the engine RPM. 

    This video regards the primary/secondary imbalance of twins - parallel twins in this case, but the principles of primary and secondary imbalance are explained. He is preparing a V-twin balance video, but we'll have to wait on that one.

     

    Thanks, I have looked at the theory on Vee twin secondaries being 1.44 the counterweight each revolution instead of 2  and indeed mentioned the lateral issue a few posts back but what gets me in all this theory is that it's alawys modelled around the central shaft supplying a constant rotation and not the reciprocating motion of the pistons and thus flawed when considering primaries being in balance.

    Thus I think that it's a lot more complicated than just lateral secondaries.

    Worthy of another thread perhaps?

    Chris.

  7. Hi Phil 

    I don't buy anything expecting a recall  maybe it's a glass half full thing but anyhow.

    And the V100 is said to be made in a yet to be new high tech factory that would take,  what,  two years to build at least?

    That is a good amount of time to call back any problems outside of the retail sector.

    So, again, I don't expect any issues but that's not to say others internally won't experience them.

    Chris.

     

  8. Hi all,

             I have a Bellagio that very frequently shows the above fault.

    To date it has never amounted to any real fault and once cleared it randomly comes back perhaps twice a week to haunt me, and even if not cleared it can go away on a restart.

    I have 5 different brand sensors that I have swapped out over the years and they all give the same readings.

    I have also redone the wiring to the sensor and to my mind it is rock solid.

    My conclusions to all of this is that the sensor, being a simple binary switch, gets fouled with contaminates in the oil and the appendix that it sits in exacerbates this.

    A simple removal and flush with kerosene sees a longer period until the next "Oh my God, its the red Oil Can of Death" catches your eye.

    In fact the warning system proves so false I see no real use for it other showing max pressure with DSB 08 Oil Pressure Fault.

     

    Thoughts?

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