ESE's works engine tuner

**TZ350** · 15th April 2018, 14:56

Originally Posted by wobbly

Sure TeeZee, you post the pack, and i will do a pipe,with some insights into the process.

Great, I will carefully work through modeling my engine setup and post the pack.

**TZ350** · 15th April 2018, 21:15

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my preliminary EngMod simulation, (crank hp).

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real life dyno run of the engine being modeled, (rw hp) .

The EngMod simulation is starting to look like the real thing. I will refine the model a bit more then Wob can work his magic and hopefully let us in on a trick or two.

**flyonly** · 16th April 2018, 00:02

Originally Posted by SwePatrick

Yes, these ones:

What size rim do you run them on? 1.4 or smaller?

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**SwePatrick** · 16th April 2018, 05:32

I run the rear tire on a 1.6" rim
And the front tire on a 1.2" rim

=)

**dutchpower** · 16th April 2018, 05:47

Originally Posted by wobbly

I was saying that putting the short A kit pipe on an older RS125 engine simply wont work - plenty have tried, and failed.
Sure TeeZee, you post the pack, and i will do a pipe,with some insights into the process.

Why Wobb everytime I make pipe in Engmod the pipe on de dyno is on the left !!!!

**koba** · 16th April 2018, 08:18

Thanks for the tips on degree wheel etc.

**wobbly** · 16th April 2018, 09:47

Simple Dutchpower - in the Temp page you have not simulated the pipe wall temp correctly.
The new rpm dependent inputs now also have the opportunity to enter the real ,as measured, surface temp data from the header,the mid, and in front of the stinger.
As the bmep reaches the outer limits, as in say a KZ2 engine, at 50Hp from a 125, the smallest changes in this type of data, make big effects on the result.
That is Bullshit in = Bullshit out.
For many tuned engines I have found that a global average temp of 325*C at the bottom of the powerband and 425*C at peak is a good start point,when the tuning gives low to mid 600*C inside the header.
The other issue is the correct modelling of say a step in the header flange.Just putting in the dimensions to correctly show the position of a step is not the same as defining
a step properly in the opening page of the pipe inputs.
The code has a very difficult time handling steps ,and not defining them correctly creates havoc in the results.

**dutchpower** · 16th April 2018, 19:45

Thanks Wobbly

**chrisc** · 16th April 2018, 20:10

I'm racing 50s here in Europe, it's pretty rad. I also got to meet Frits finally after reading so much of his advice online.

Check out what I'm up to here: www.grandprixmachine.com

**F5 Dave** · 16th April 2018, 21:02

Chris how do you get in these situations? I would love to have been in those pits with all those 50s.
I guess they make our efforts look a little shaky.

**Bert** · 16th April 2018, 21:28

Originally Posted by chrisc

I'm racing 50s here in Europe, it's pretty rad. I also got to meet Frits finally after reading so much of his advice online.

Check out what I'm up to here: www.grandprixmachine.com

Choice Chris.
Loving the pictures and the updates.