to download the Demo version ( 1.6.0 ).
Rocker ratio influence on max. velocity line
in Design page implemented, Valve spring page better explained and step
Can draw Roller Cam shape.
Able to use
Comparison Cam 1 data to display overlayed Cam shape to visualize what
the new Basecircle must be to create the new profile.
Cam shape drawing now correct.
Load .cam files error fixed.
Duration calc error with Inch setting fixed.
Click to download the Pdf instructions.
button to buy the full version for 99.- US $
version that includes the Cam measuring machine controls and schematics
for it etc.
costs 199.- US $
order, the Software will be compiled with your Company name on the start Page
download link will be mailed to the email address you have used on
PayPal to pay for the order.
There is 12 months of free updates included.
program is able to work in both mm and inches.
Splines to generate the lift curve, with this approach it is fairly easy to
measured Cam lift curve and then modify it.
Splines aren’t as
limited as the more common Polynomial curve approach and with Splines it’s easy
design an asymmetric lift profile. With the adjustable 2 stage smoothing
function it’s also easy to get
low Jerk values without compromising the lift
Design Report Page:
Flat tappet with design Cam shown inside the old Cam with larger basecircle.
Roller Cam with design Cam shown inside the old Cam with larger basecircle.
Duration etc. Calc for up to 4 Cams:
Change the centerline and calculate
directly the changes in opening, closing degrees, lift
at TDC and eg. 10 deg. before/after TDC etc.
Compare Curves for up to 4 Cams at the same time:
Comparison Cam nr. 1 ( 2 and 3 ):
This Page takes its input from the lift
mm/inch with 1 ,2, 4 or 5 degree steps data in the left Window.
For Hand measured Cams there is the
to smooth the generated lift-velocity-accelleration and jerk data.
Cam report Page:
Generates Cam report and/or a Cam Card with specs.
Static Valve Spring Force Calculating Page:
Fast Fourier Tranformation analysis:
Page, only active in the 199 $ version:
Interface to the Cam measuring machine
A complete reference to parts needed
from eg. Ebay is supplied, as well as full schematics
to the wiring and firmware for the Arduino Uno board that controls the
Steppermotor/Driver and the
Excluding the Mitutoyo indicator and its SPC cable, the price of parts
from Ebay adds up
to just under 400 $ (December 2014)..
An example of a Cam measuring Machine made from the referenced parts ( + an aluminium
profile cut and milled, not supplied ) :
Shows Valve, Piston position, velocity and
An example of what we have done with
this program even in its early stages in 2013:
Dyno comparison of a HRC cbr600
exhaust cam (blue) and the improved version we made (red).
If you compare it to the picture below with an older comparison on a
similarly prepared engine of the same hrc exhaust cam and
the commonly used in SuperSport WC 1270 grind from England, its clear
that the 6 deg longer duration of the 1270 grind lifts
topend power but causes powerloss from the midrange and down, still
this was preferred by many teams just to get a single hp
more from 12.000 up.
Our approach was to increase the duration only 4 degrees and use an
assymetric lift curve with same closing flank as Hrc
but a slightly more aggresive opening flank (the 1270 actually had
milder flanks since it probably was only a stretced out Hrc
profile not a completely redesigned profile).
Dyno comparison of an HRC cbr600
exhaust cam (red) and a 1270 UK grind (green).