have you ever looked at the corrections for humidity? the range of them i
mean...
Trust me on this it is a waste of time to get concerned about. generally when
someone attributes a power change due to humidity it is because they see a
little mist in the air and attribute the power gain or loss to that. Well what
they saw was the result of a change in baro or air temp and the dew point
changed so they could see the water in the air. get a good physics book and play
with the math a bit..
Dave
William T Smith wrote:
>
> If the rod was attached to a aneroid drum like in a
> barometer then it could move the tapered needle in or
> out as dictated by pressure altitude. But how would it
> handle humitity changes? On my Speed Pro EFI we have to
> enter the humitity--it compensates for the rest.
>
> Quoting Dave Dahlgren <ddahlgren@snet.net>:
>
> > I will call them on monday i have got to know how
> this works ..
> > Dave
> >
> > Joe Amo wrote:
> > >
> > > Dave they
> > > COMPENSATE for air density changes.
> > > The reason so many use these carbs is that
> > > they not only make the most power, but they
> > > allow you to travel to anywhere in the world and
> require
> > > NO changes/adjustments, racers travel unload and do
> not
> > > have any adjustments to make, yes sea level or
> Denver,
> > > same set up, 32 degrees or 120, same set up,
> thousands of
> > > users every weekend can attest to them.
> > > Joe :)
> > >
> > > Dave Dahlgren wrote:
> > >
> > > > Wouldn't that be a CFM change and not a density
> change. most carbs will
> > > > compensate for a CFM change quite well. I can put
> the same 750 Holley
> > or carter
> > > > on a wide variety of engines and it will work
> quite well but neither
> > will handle
> > > > a 4000 ft change in altitude very well.
> > > > Dave Dahlgren
> > > >
> > > > Joe Amo wrote:
> > > > >
> > > > > Dave, the "Lectron" is the "Fast By Gast" carb
> of Pauls.
> > > > > Sort of Pauls, it came on two strokes a few
> years ago,
> > > > > he simply picked up on it again, Vesco ran them
> on many
> > > > > of his machines. They are truly the poor mans
> EFI,
> > > > > the set I got came off of a 1500cc plus 275 hp
> NA
> > > > > motor, when I called Paul to find out were I
> should
> > > > > set the metering rod length for a baseline on
> my 998cc
> > > > > motor, he said
> > > > > "didnt they work on the bike they came off of",
> I said
> > > > > yes, and on they went, they carburate perfectly,
> > > > > how is that for compensation?
> > > > > Joe :)
> > > > >
> > > > > Marge and/or Dave Thomssen wrote:
> > > > >
> > > > > > Joe
> > > > > > Paul Gast makes a carb for the pro stock
> motorcycles that does the
> > same
> > > > > > thing, now that you mention it. None of the
> scooter racers have to
> > change
> > > > > > jets at all.
> > > > > >
> > > > > > Dave the Hayseed
> > > > > >
> > > > > > ----- Original Message -----
> > > > > > From: Joe Amo <jkamo@rapidnet.com>
> > > > > > To: Dave Dahlgren <ddahlgren@snet.net>
> > > > > > Cc: Marge and/or Dave Thomssen
> <mdthom@radiks.net>; Land-speed
> > Racers
> > > > > > <land-speed@autox.team.net>
> > > > > > Sent: Saturday, June 16, 2001 2:28 AM
> > > > > > Subject: Re: Fw: Hilborn v. carbs
> > > > > >
> > > > > > Mine do Dave, you can borrow them, they are
> > > > > > Lectron (brand name), a flat slide carb with
> a tapered metering
> > > > > > rod, no jets, yes they compensate
> > > > > > for air density, dont need no electronics,
> dont need
> > > > > > no high falootin fuel system, its all
> natural, self compensating,
> > > > > > the dyno and the timing system dont lie, ask
> ANY motorcycle
> > > > > > prostocker (or 90% of any at the dragstrip,
> or wanna be me)
> > > > > > Joe :)
> > > > > >
> > > > > > Dave Dahlgren wrote:
> > > > > >
> > > > > > > Then what is with all the jets for changing
> things?? You mean to
> > tell me
> > > > > > that a
> > > > > > > Holley or carter carb will need no jet
> correction to run at 4000
> > ft and
> > > > > > 110
> > > > > > > degrees instead of sea level and 60
> degrees.. Sure wish i had one
> > of those
> > > > > > !
> > > > > > > Dave
> > > > > > >
> > > > > > > Marge and/or Dave Thomssen wrote:
> > > > > > > >
> > > > > > > > And the answer is: any brand but
> Stromberg!
> > > > > > > >
> > > > > > > > ----- Original Message -----
> > > > > > > > From: Dave Dahlgren <ddahlgren@snet.net>
> > > > > > > > To: Marge and/or Dave Thomssen
> <mdthom@radiks.net>
> > > > > > > > Cc: Land-speed Racers <land-
> speed@autox.team.net>
> > > > > > > > Sent: Saturday, June 16, 2001 5:20 AM
> > > > > > > > Subject: Re: Hilborn v. carbs
> > > > > > > >
> > > > > > > > And the brand carb that will make air
> density changes is?
> > > > > > > > Dave Dahlgren
> > > > > > > >
> > > > > > > > Marge and/or Dave Thomssen wrote:
> > > > > > > > >
> > > > > > > > > Bill
> > > > > > > > >
> > > > > > > > > I think the major difference between a
> Hilborn and a carb is
> > the
> > > > > > modern
> > > > > > > > carb
> > > > > > > > > (not a 97) automatically adjusts for
> changes in air density
> > (within
> > > > > > > > limits)
> > > > > > > > > and the Hilborn relies on you to change
> the pill. If you get
> > the pill
> > > > > > > > > wrong, the carb out-powers the
> Hilborn. EFI is one step
> > better, it
> > > > > > > > > automatically adjusts everything. CFM
> aside, Hilborn trumps
> > carb and
> > > > > > EFI
> > > > > > > > > trumps Hilborn just because of the
> fineness of the
> > spray(liquid fuel
> > > > > > does
> > > > > > > > > not burn, only vapor). Having done it,
> I have to say that
> > tuning an
> > > > > > engine
> > > > > > > > > equipped with 97's was the biggest
> challenge, but I like my
> > Holly 750.
> > > > > > > > > Dave the hayseed
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