Tom
I like the software very much. I purchased the Dyno 2000, Drag 2000 and Cam
Disk (and got 2 free game programs and a tee shirt) I think the total was
about $90. I think it was well worth the price. I have probably run over a
hundred cam profiles by manually entering the data and several million
combinations using the Iterative testing feature. What I learned is that
Racer Brown Cams was right on the money with his recommended profile and
that several Hughes grinds will work as well if not better.
To answer your question yes I would recommend it, it is easy to use,
informative and fun. I have no real world comparisons but like I said before
I am told that the results are somewhat optimistic, for my 360 stroker i
think they are right in line with what I have been told this motor will do.
It is a good tool to use to narrow down what your options are.
One set of results I question is the gearing on Drag 2000. I get the best
#'s using 3.55's with a 3800 RPM stall converter, conventional wisdom says
that taller gears say 4.10's should make it quicker, the models showed the
car slowing down. This my be a function of all the low end torque this
engine is producing and being able to put it to good use.
I am not overly impressed with their technical support but they do offer a
30 day money back guarantee.
Let me know it you get it, i have a lot of cam grinds and air flow data on
stock 360 heads and Edelbrock heads that I can share with you. I am not sure
about the airflow data on the hemi heads but I am sure you can fine it
somewhere on the internet.
Scott
Scott
From: tomtiger1@xxxxxxxxxx
Reply-To: tomtiger1@xxxxxxxxxx
To: "Scott H" <kneedrager@xxxxxxxxxxx>
Subject: Re: [FWDLK] Horespower vs torque
Date: Wed, 27 Dec 2000 23:36:17 -0700
Scott:
I had run the demos on the motionsoftware website in the spring, but did
not by
the software because no I know had used it. However, it was mentioned to me
at
the Mopare Nationals. Would you recommend it? I just had a cam special cut
by
Sig Erson, and basically it was me and their engineers discussing what was
best
for my engine and car (57 Plymouth shortened 38", 392 hemi, 4 speed, 4:10
gears). The cam has a 112 degree LDA, and I am thinking about having
another cam
ground with higher lift and closer lobe centers. It would be nice to run a
simulation before I order the cam.
Please let me know what you think of the software.
Thanks,
Tom
Scott H wrote:
> The software is Desttop Dyno 2000 and Desktop Drag Racing. You can see
it
> at www.motionsoftware.com. Some people that have used it say it is a
> little optimistic on some of the results, possibly off by 10%. For me
thogh
> it is a pretty good tool to get an idea of what I can expect from what
Ia
> am building.
> Scott
>
> >From: tomtiger1@xxxxxxxxxx
> >Reply-To: tomtiger1@xxxxxxxxxx
> >To: "Scott H" <kneedrager@xxxxxxxxxxx>
> >CC: L-FORWARDLOOK@xxxxxxxxxxxxx
> >Subject: Re: [FWDLK] Horespower vs torque
> >Date: Tue, 26 Dec 2000 17:00:35 -0700
> >
> >Hi Scott:
> > > MY QUESTION IS, can someone help me understand, or point me to a
web
> >site,
> > > how the relationship between the torque and HP values works.
> >I am not sure how deep you want to get. Horsepower and torque are
related
> >by the
> >formula (first order equation): hp = (torque x rpm ) / 5252. There
are
> >several
> >reference books listed on Harvey Cranes's website -
www.harveycrane.com. In
> >addition, Mopar Muscle and Car Craft have been running some excellent
340
> >and
> >360 rebuild artilcles in the last 6 or so months. In these articles
they
> >try
> >various cams and list the dyno results.
> >
> > > but I would think that an optimum curve would have the HP and torque
> >peak at
> >about
> > > the same rpm.
> >No, they will not (or better not!!!). Actually, your figures are not
too
> >bad.
> >
> > > Will the engine run out of steam at torque peak of 3500 RPM OR
contunue
> >to
> >pull to
> > > 5500 RPM the HP peak.
> >I assume you dialed in all the information required by the program
> >(gearing,
> >converter stall speed and trans. gear ratios if auto, number of gears
and
> >ratios
> >if stick, car weight, exhaust system, carburation vs. injection, etc.),
so
> >it
> >should pull up to 5500 rpm .
> >
> >Please supply me with the name of the software; I would like to try it.
> >
> >Regards,
> >Tom Noonan
> >
> >Scott H wrote:
> >
> > > I just got a neat Desktop Dyno program that allows to assemble an
engine
> >on
> > > your computer using any block, bore, stroke, cam, intake, exhaust
etc.
> >then
> > > run a dyno test and even simulate dragstrip runs.
> > > I have been playing with a lot of different cam specs and am looking
for
> > > someone to help me understand the results.
> > > I know these programs have their own set of problems but It gives me
> > > something to do and the results do reflect reality even if the
numbers
> >may
> > > not be 100% accurate
> > > The engine is a 4" stroke 360 bored .030 over resulting in 408 CID.
> > > I have been running both small block and big block cam profiles
using
> >flow
> > > rated for mildly ported Edelbrock Aluminum Heads.
> > > My favorite combination gives me massive torque values, a nearly
flat
> > > horizontal line of 484 lb ft from 2000 RPM to a max of 495 at 3500
rpm.
> >It
> > > begins to taper down between 4000 and 5500 RPM (from 483 to 348 lb
ft)
> >and
> > > down from there.
> > > The HP curve rises nicely from 185 hp at 2000 to a peak of 385 at
5500
> >RPM
> > > and then begins to taper down.
> > > MY QUESTION IS, can someone help me understand, or point me to a
web
> >site,
> > > how the relationship between the torque and HP values works. I know
> >that
> > > more peak torque is better than peak HP especially in a heavier car,
but
> >I
> > > would think that an optimum curve would have the HP and torque peak
at
> >about
> > > the same rpm. In my models the hp always peaks later than the peak
> >torque.
> > > What is the relationship between the 2 in terms of performance? Will
the
> > > engine run out of steam at torque peak of 3500 RPM OR contunue to
pull
> >to
> > > 5500 RPM the HP peak.
> > >
> > > Thanks,
> > > Scott
> > >
> > > _________________________________________________________________
> > > Get your FREE download of MSN Explorer at http://explorer.msn.com
> >
> >
> >
>
> _________________________________________________________________
> Get your FREE download of MSN Explorer at http://explorer.msn.com
_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com
|
|
Back to the Home of the Forward Look Network