ESE's works engine tuner

[Frits Overmars]

FOS software download link, valid until February 17, 2022

https://we.tl/t-A61fCirINx

I wrote these programs in the course of over five decades for my own personal use and I never bothered to make them user-friendly, so you may have to do some experimenting on your own, as I will not have time to answer questions.
The lot runs on MS-DOS 6.2 or Windows 98 (I recommend Win98SE) so either dig up an old computer or use an emulator. On my Win10-laptop I use VMWare Player.
I advise against DOSBox 0.74 because that is essentially a stripped-down version of MS-DOS 5; it will run some of the programs, but not all of them.

[JanBros]

thank you Frits

[porttiming124]

Thank you Frits

[Javier Ruda]

Downloaded, thank you Frits!

[OopsClunkThud]

huge thanks Frits

[Javier Ruda]

The lot runs on MS-DOS 6.2 or Windows 98 (I recommend Win98SE)

Hello Frits, the View3d in MS-DOS is amazing, hats off!!!

[Frits Overmars]

Hello Frits, the View3d in MS-DOS is amazing, hats off!!!

Thank you Javier. I wrote the first version of View3D about ten years before today's standard, SolidWorks, was introduced .

[TZ350]

Making noise on the dyno.

[F5 Dave]

I'm just kinda getting the feeling a bidlot or athena barrel and some time on a dynojet would be a good starting point. From there he has a test engine he could put on his dyno and say 16hp equals. . . Adjust. Adjust. 16hp.

Right.

[husaberg]

I'm just kinda getting the feeling a bidlot or athena barrel and some time on a dynojet would be a good starting point. From there he has a test engine he could put on his dyno and say 16hp equals. . . Adjust. Adjust. 16hp.

Right.

Didn't he initially have a Dyno built from an Electric motor fwith the wheel running directly of the stator?

edit today 8.25 17/2./22

Yep
Attachment 316720

Thanks!

All I did was tear out the windigs.
Attachment 316742
Attachment 316743
Attachment 316744

2.17kgm2, the plan is to make a detachable flywheel for the axle, bumping it up to around 6-7kgm2 when needed.

I share your concern. The bearings should be fine up to 4500rpm, more with limited lifespan(skf 6316,6319), the rotor at least 3000rpm continuous cause thats what the motor was spinning.
70mph+ with my scooter on it, no vibration or other scary stuff.
It'll be fine!(famous last words...)

80mm shaft.
Same Sketchy_Racer as on the Simple Dyno forum?

[SwePatrick]

I'm just kinda getting the feeling a bidlot or athena barrel and some time on a dynojet would be a good starting point. From there he has a test engine he could put on his dyno and say 16hp equals. . . Adjust. Adjust. 16hp.

Right.

Biggest problem he has is his stubborness och not listening.
I have mentioned early in dyno build to put loadcell on the retarder.
But,, he seems finally to have figured that out by him self now.

And if doing that, and later setting up the loadcell as per instructions in his manual for yourdyno is a no brainer, a static pull will show correct power.
A sweep through the rpm band needs him to know the inertia on his whole dyno system and place that data into program.

[porttiming124]

I wonder if it's his goal to stretch the time rather than go straight to the point.

[Condyn]

It is his income so I would say dangling the carrot is definitely in the cards, but at the end of the day he is still developing things that nobody else is.

[wobbly]

The problem with the DynoJet baseline is that you are up against the ( in ) famous fudge factor built into the software.
There have been various attempts at calculating this , but its still just an estimate.
Doing proper calibration with a torque arm and known mass for the load cell is inherently super accurate , as is a stringline/dropping weight test with subsequent friction rundown, accurate for any inertia system.

Seems to me there is a huge mismatch between the retarders " power " capability and the engine , plus not having ( or not using ) a baseline PID loop setup for the power supply , means once again our friend is off on another tangent
that was never going to " work ".
That retarders inherent inertia seems well excessive to give a realistic run time for even the most powerfull 50cc engine , but having said that , gearing correctly can solve that issue.

I worked on the setup of a very expensive SuperFlow retarder control system for an Eddy Current dyno and it was a necessary "workaround " to use large switched resistor banks on the power supply, as it was technically impossible
to accurately control the dyno at low power numbers with sufficient resolution when testing a single cylinder mule engine - and then also using the same system to control the power produced by the completed test engine.
ie a delta factor of 4
As always the Devil is in the detail.

[lodgernz]

FOS software download link, valid until February 17, 2022

https://we.tl/t-A61fCirINx

I wrote these programs...

Frits, thank you for these gems.
I suspect your memory of their details might be hazy, but I'm going to ask anyway: In the squish program, what is the "number of crankshaft degrees"? Is it the exhaust open duration, or the EO point?
Or something else?