Chris Wilson
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Posts posted by Chris Wilson
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How can two different race bikes be number 21?
Is the whole field numbered 21?
Chris.
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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.
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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.
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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.
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Twin plug the head and change the advance will make it smoother.
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7 hours ago, docc said:
Where else in the world can you solve so many serious problems for thirty dollars US?
Any third world country?
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I have had another starter motor installed also with the typical click no start issue arising.
Diagnosed by the local Harely electrician as a worn leading brush in the starter itself.
Chris.
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Wonderful link Phil, I learned a lot.
Cheers.
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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.
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Would it be possible to insert a dampner inside if the frame front down tube?
I know it sounds daft but it's the main route for vibration from engine to handle bars.
Just thinking laterally here.
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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.
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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.
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I agree, and I remember a Dharma I had that was uncannily smooth.
Perhaps adding a sidecar might smooth things out!
Chris.
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22 minutes ago, gstallons said:
Just for kicks , look at the oriveshaft to see if it is indexed correctly
But the drive shift will always be orientated laterally regardless of engine design so you think maybe is manufactured error?
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19 hours ago, Lucky Phil said:
No Guzzi will ever be as smooth as a Ducati V twin because of the crank orientation.
Ciao
Why would crank orientation make a difference to smoothness?
Secondaries adding up along a lateral horizontal plane with no mass to counteract?
Thanks.
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Come to think of it a transverse Vee twin is the only engine design that mimics biological bilateral symmetry and has the same cadence as a heart beat.
No wonder species Homo Sapien relates to it so well as it seems to be an extension of one's self.
Chris.
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Any noise on this one?
Chris.
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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.
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17 hours ago, Scud said:
Sounds like it's time to install an oil pressure gauge.
The fault happens at zero pressure so I am not sure that a gauge that measures values above that may be of any use here.
But thanks for the suggestion.
Chris.
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15 hours ago, MartyNZ said:
There's some discussion here that might help you.
https://www.guzzitech.com/forums/threads/bike-wont-start-dsb07-dsb08.2717/
Thanks Marty, what I got out of that link was disconnect the battery and perhaps a cut out switch is in order.
Chris.
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So if this new model is entirely built in a new factory with all the power behind Piaggio and with no compromise and legacy from older models I still think that errors and recalls would be no more than industry norms, that is to say, expect none.
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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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There seems to be a report of "hand numbing vibration" in the original post" and if the dampners are original then nothing is being ignored, its actually being well considered.
And as you say, it all going to vibrate at some point but the aim is to reduce not eliminate.
Chris.
It's happening! in Great Britain; British government has set an end date to the sell of ICE powered motorcycles...
in Special place for banter and conversation
Posted
There goes space exploration, unless Musk figures out how to make an electric rocket.
Chris.