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 Janbros' 2-stroke excel for ports, heads and pipes

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AuteurMessage
JanBros



Nombre de messages : 264
Localisation : Belgique
Date d'inscription : 05/12/2011

Janbros' 2-stroke excel for ports, heads and pipes Empty
MessageSujet: Janbros' 2-stroke excel for ports, heads and pipes   Janbros' 2-stroke excel for ports, heads and pipes Icon_minitimeDim 12 Jan 2020 - 0:45

thought I'd better open a topic to keep track of updates/corrections.

My 2-stroke spreadsheet is ready (for now at least), so I'm throwing it on the net so everybody can use it.
It contains pages for ports, the head and FOS pipe
On the seperate ports pages (exhaust and transfer), it calculates the STA numbers (Specific Time.Area) of your ports and you can matcch them to the target's, determinned by the BMEP
On the Head page, you can design your head and it calculates the MSV (Mean Squish Velocity) 100% accurtly with Blair
On the FOS-pipe page, it calculates a Frits Overmars FOS pipe, and you can ad a Wobbly-duct , and you can add extra header/diffusor/baffle sections to the pipe.

you are free to do with it what you want, as long as it is not for commercial use. If somebody has idea's to improve or add extra features, please share so we can all benefit.
In the manual I've tried to explain how it works, please read it first before you ask questions.

[Vous devez être inscrit et connecté pour voir cette image]

a small error has come up :  on the Data page , in cell Q14 both "exhaust new" should be "exhaust old" , so change it yourself or download it again.

new download links to version 1.2 :
excel : [Vous devez être inscrit et connecté pour voir ce lien]
manual : [Vous devez être inscrit et connecté pour voir ce lien]


Dernière édition par JanBros le Lun 13 Jan 2020 - 19:43, édité 1 fois
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ReinanRacing

ReinanRacing

Nombre de messages : 53
Localisation : Japon
Date d'inscription : 24/06/2018

Janbros' 2-stroke excel for ports, heads and pipes Empty
MessageSujet: Re: Janbros' 2-stroke excel for ports, heads and pipes   Janbros' 2-stroke excel for ports, heads and pipes Icon_minitimeDim 12 Jan 2020 - 12:43

If you put your intellectual property on the net, I strongly recommend that you add a license; a license allows you to avoid the application of your work for purposes you do not endorse (such as, in your case, commercial use). One of the best options is one of the so-called "Creative Commons" licenses, which are specifically designed to license individual creative endeavours. There are several licenses available, check the website:

[Vous devez être inscrit et connecté pour voir ce lien]

You can choose a Creative Commons License, for example, in your case, you could choose "Attribution-Non Commercial-Share Alike International 4.0". The process of adding the license is easy, just type in the original Excel file: "This work is protected under the XXX license". If you go to the website of Creative Commons, they will give you a hyperlink to put into your work.

As another point, I am involved with various "open software" developments and I know from experience that quality control is very important. I encourage you to write a document specifying specifically all of the equations you use in your work. It will make your own development easier, it will help other users to understand your work, and most of all, it will help others to find and solve any mistakes you may have made.
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motori49



Nombre de messages : 156
Age : 70
Localisation : Turin -Italie Piemont
Date d'inscription : 02/12/2015

Janbros' 2-stroke excel for ports, heads and pipes Empty
MessageSujet: Re: Janbros' 2-stroke excel for ports, heads and pipes   Janbros' 2-stroke excel for ports, heads and pipes Icon_minitimeDim 12 Jan 2020 - 13:01

merci JanBros
magnifique travaille Janbros' 2-stroke excel for ports, heads and pipes 771973
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fullgazlolo



Nombre de messages : 1178
Localisation : GE-CH
Date d'inscription : 04/01/2016

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MessageSujet: Re: Janbros' 2-stroke excel for ports, heads and pipes   Janbros' 2-stroke excel for ports, heads and pipes Icon_minitimeDim 12 Jan 2020 - 14:15

Janbros' 2-stroke excel for ports, heads and pipes 55116 Janbros' 2-stroke excel for ports, heads and pipes 438659 Shocked Janbros' 2-stroke excel for ports, heads and pipes 101130 Janbros' 2-stroke excel for ports, heads and pipes 241515
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carlovitch1



Nombre de messages : 310
Localisation : Pays Catalan
Date d'inscription : 20/05/2018

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MessageSujet: Re: Janbros' 2-stroke excel for ports, heads and pipes   Janbros' 2-stroke excel for ports, heads and pipes Icon_minitimeDim 12 Jan 2020 - 16:38

Thanks again Janbros !!
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Maurice Specken



Nombre de messages : 4
Localisation : Holland
Date d'inscription : 10/05/2014

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MessageSujet: Re: Janbros' 2-stroke excel for ports, heads and pipes   Janbros' 2-stroke excel for ports, heads and pipes Icon_minitimeLun 13 Jan 2020 - 13:10

Congratulations Jan Bros,

As my son and I did something similar (only in a raw version and not that extended) we know how much work this must have been for You. Deep respect
We will dive into it ( I hope to start this evening) to look for deviations between our calculations and yours just to verify and learn.

Regards Maurice
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tibus

tibus

Nombre de messages : 7
Localisation : France , panam
Date d'inscription : 30/01/2013

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MessageSujet: Re: Janbros' 2-stroke excel for ports, heads and pipes   Janbros' 2-stroke excel for ports, heads and pipes Icon_minitimeLun 13 Jan 2020 - 19:22

good job Jan Bros Janbros' 2-stroke excel for ports, heads and pipes 241515
thanks !
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JanBros



Nombre de messages : 264
Localisation : Belgique
Date d'inscription : 05/12/2011

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MessageSujet: Re: Janbros' 2-stroke excel for ports, heads and pipes   Janbros' 2-stroke excel for ports, heads and pipes Icon_minitimeLun 13 Jan 2020 - 19:35

some more corrections for "IF" errors in situations I hadn't tested yet, and added a page you can print and take into your shed to write down all the needed input data.
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