Camshaft Design Program.

I have updated .ino files available for users of the 199.-/249.- versions.
Email me for info, files are free for registered users.

Latest version: 2.02.1 6/9-2024

Changed construction Cam data save format to be more precise.
FFT page can show all 4 Cams simultanously.
Valvespring page can also show all 4 Cams simultanously.
Cam report page corrected to show duration for comparison Cams.

2.01.10

New Page added "Dual Lobe".
Intended to be used to measure the Lobe center distance in Camshaft degrees between
Exhaust and Intake Lobes on same Camshaft.

Version: 2.01.09    8/4-2024

Added cam shape radius display on Large Window page.

Version: 2.01.08 24/3-2024

Added: lift at BDC on intake cams.

2.01.07    3/8-2023

Enhanced print of comparison curves.
Show of file name in comparison cam windows.

Version: 2.10.05     29/5-2022

Large window for viewing cam shape added.

Version: 2.01.03 19/6-2020

Linear encoder indicator option now included in the 199/249 Euro versions of the Program.
0.01 to 0.001 mm / equivalent " decimal resolutions supported.
Use an expensive Ono Sokki or go with a cheap "china" cnc style encoder.
Slight improvements when designing in Inches. ver. x.xx.03.

Ver. 2.00.1 1/2-2020

Now with 0.1 and 0.5 degree stepped resolutions on the designed Cams Lift Data in the PRO version.
Ability to show comparison Cam shape (Lift, Velocity, Accelleration and Jerk) on the Design Page.
Plus a number of other small improvements.

Ver. 1.9.3:
Increment step size adjustable, View comparison Cams on valvespring page.
Save comparison Cams as well as design Cam for EngMod4T.

Ver. 1.9.00:
Piston movement Page is working now.
Improvements on Compare Curves Page.

Corrected 1.8.8:
Rocker ratio influence on max. velocity line in Design page implemented, Valve spring page better explained and step sizes improved.

Corrected 1.8.6:
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.
Corrected 1.8.4:
Cam shape drawing now correct.
Load .cam files error fixed.
Duration calc error with Inch setting fixed.
27

Click to download the Demo version ( 2.xx std. version only demo ).

Click to download the Pdf instructions.

Full version for 99.- € EURO :

Pro version with 0.1 degree resolution 149.- € EURO :

Version that includes the Cam measuring machine controls and schematics for it etc.
costs 199.- € EURO :

Pro version that includes the Cam measuring machine controls and schematics for it etc.
costs 249.- € EURO :

On recieving your order, the Software will be compiled with your Company name on the start Page
and the download link will be mailed to the email address you have used to order.
There are 12 months of free updates included.

You can also mail us for an upgrade price if your purchase is older than 12 months or you want to expand your existing version to Pro :

info@mjpsoft.dk

Short overview.

Start Page:
The program is able to work in both mm and inches.
iIt uses Splines to generate the Valve lift curve, with this approach it is fairly easy to copy any
measured Cam lift curve and then modify it or make new Cam design from scratch.
Splines aren’t as limited as the more common Polynomial curve approach and with Splines it’s easy to
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 curve.

Design Page with comparison cam shown in grey:

Zoomed in on the top of the accelleration curve, shows the difference in 1 and 0.1 degree resolution:

Design Report Page:

Flat tappet with design Cam shown inside the old Cam with larger basecircle.

Roller Cam shape shown :

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 data in mm/inch with 0.1, 1 ,2, 4 or 5 degree steps data in the left Window.
For Hand measured Cams there is the option to smooth the generated lift-velocity-accelleration and jerk data.

Piston movement Page:
Visualize Valve behavior during the overlap phase.

Cam report Page:
Generates Cam report and/or a Cam Card with specs.

Static Valve Spring Force Calculating Page:

Fast Fourier Tranformation analysis:

Cam explorer Page, only active in the 199.- and 249.- Euro version:
With Interface to the Cam measuring machine electronics .

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
Mitutoyo indicator.
Excluding the Mitutoyo indicator and its SPC cable, the price of parts from Ebay adds up
to just under 400 $ (December 2014)..

July 2020, Linear encoder indicator option included.

An example of a Cam measuring Machine made from the referenced parts ( + an aluminium
profile cut and milled, not supplied ) :