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THINKING ABOUT GETTING A PICO...?? (Read 11,925 times)
Dr. Jake
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Re: THINKING ABOUT GETTING A PICO...??
Reply #15 - Jun 6th, 2010 at 5:06am
 
Dr. Brandon,   when test driving to read the flow, you never get the exact number but if the mass is off enough for the customer to feel it and complain, the numbers will be so far from right, it is easy to predict that the mass needs replacing or cleaned. Even for a 4.0L using 7 or 8 at 3000rpms, it is still in the 90's. When ya drive, you can usually tell when it going thru 1st and 2nd gear if it will make it to the 90's or not. Many people on Mitchell including me was not doing this until recently when DR. McGreasybob Von Spoonervich showed us that chart. I didn't want to memorize all those numbers or have to keep up with a chart. Just made a head formula. Greasybob is our wiggly line expert on Mitchell and I want his job. Guess that's why I have a pico...........aye. Be getting by w/o it. Now that got one, I wants to be a SA wiiidit. Get side ways, do burn-outs, fly it up-side down. That will take some understanding and probably gonna hit tree or two. hehehehe I always do.........aye.

When trying to get the 4 wheeler to work, couldn;t find anyone

that could help me cause nobody is heavy as I am. But I finally figured it out. Started winning races. And did it for 8 years. Handling is everything. Power is necessary, but w/o handling would just get you hurt. I got hurt. I got my feelings hurt too.

Once got the deal in my head, then made others fast. It worked. I made others win. They younger/more healthy. Both were #6 out of over a 100 4 wheelers in every race.  It's not that hard to do. Just gotta understand some stuff.
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Tom Roberts
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Re: THINKING ABOUT GETTING A PICO...??
Reply #16 - Jun 6th, 2010 at 10:50am
 
Jake,

Quote:
Power output/management ona pico is the relationship of time and samples...........yes.?


That would be true sample rate and would apply to any DSO.

Quote:
The secondary signals are fast so one must be sure to have they foot on the pedal enough to get the real picture.............aye..?


Yes, these should be sampled at at least 1 MHz.

Quote:
At this time in the software, one must just know the numbers to understand where the gas pedal is...........yes.?


Yes.  We do not get into these issues in the public areas.  If you would like to start this discussion in the Picogroup area we will provide more detail.

However, watching the 4000 power management tutorial while referring to the laminated sample rate chart included with your kit will provide you a good working understanding of where the clutch and the gas are so you launch instead of just doing a smoke show.   Wink

The 3000 scopes had no clutch and best results were to just put the pedal to the metal and forget about it.  Simple.  The 4000 series are so much more powerful and require a bit of futzing with to get the desired results.  It's not hard though and with a little practice it will become second nature.
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Tom Roberts
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Dr. Jake
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Laurens SC (Jerkwater), South Carolina, USA
Laurens SC (Jerkwater)
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Re: THINKING ABOUT GETTING A PICO...??
Reply #17 - Jun 6th, 2010 at 11:39am
 
Tom, I've seen voltage leak right out the cap on 3.0L nissans. It won't

do it unless a ground (victim) presents  itself.  Looks like it would be

smart to provide a ground to battery at the bnc on scope with any test

lead going under hood. Lightning could hit after tha attentuator...yes.?

Does anyone make long test lead that is banana on both ends.? I like

those large clips. I got them on my fluke. Work good...aye.  Thanks

for your time.  jake
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