ESE's works engine tuner

[jonny quest]

Looking for pipe specs mid 90s Honda CR250R for motocross use.
Anyone have anything they can share please?

[andreas]

YZ 250 pipes -06, perhaps they can serve as a guideline. ( Outside diameter)

[JanBros]

And for the amateurs who are the real target group here, be misled !!
As can be clearly seen in this example, because they can only work with portmaps.

Thank you on behalf of all "Buckets"
What an arrogance !

Foekema ? Is it you Luc ? catfishing again ?

[wobbly]

For someone to be derogatory of Frits as being arrogant , is easily explained by the old adage " that which you despise in others , is within yourself ".
HenkS may not be NoLuc , but for sure its one of his relatives.

But if that is the case , then fuck off with your delusions somewhere else.
Been banned once, its easy to make it happen again.

You have spoiled the weekend of a Dutchman winning at Zandvoort.

[TZ350]

.
Buckets, it's like a happy dinner party.



HenkS we are all friends here because we bring positivity to the table, you are invited.

[husaberg]

HenkS we are all friends here because we bring positivity to the table, you are invited.

Hi Rob HenkS/LucF has been goneburered again, It appears that whilst he was leaving, he also tripped down the stairs and beat himself up with a phonebook.
He apparently gave no forwarding address.....
Its a shame, he could have just changed his user name to Smeerlap Zakkenwasser.

[ceci]

Although.... you may remember Roland Holzners 24/7 experiment at Modena a couple of years ago. Roland realized it without any electronics because the CIK would have vetoed that. His system worked, but with the karting world being the karting world, the CIK vetoed it anyway, like it had done with Rolands synthetic inlet inserts some time before. If the CIK doesn't like you, they'll let you know...

1º I am glad of the success of Roland Holzner in Modena with the 24/7 valve, he has succeeded where HIROSE TATEO did not in SUZUKI MOTOR CO from 1983 to 1986.
2º I regret that the CIK is against progress, it is unfair to reject all progress

[ken seeber]

2º I regret that the CIK is against progress, it is unfair to reject all progress

Ceci,

Things are not so bad with the CIK and progress continues:

"It is now ok to paint the outside of the cylinder casting any colour, except blue and red combined"

[Frits Overmars]

.
Buckets, it's like a happy dinner party.

Thank you guys, you make me feel welcome and secure

[Vortex]

Not being able to answer the question is correct, only possible in CNC for the few who can.
But they are not waiting for such a simple drawing.
And for the amateurs who are the real target group here, be misled !!
As can be clearly seen in this example, because they can only work with portmaps.

Thank you on behalf of all "Buckets"
What an arrogance !

Well, Mr HenkS,
I can hardly hold back now. I read everything here and learned a lot. I hardly never comment because I try to be modest towards the experts whom I consider better than myself. You should be glad that Frits and Wobbly except to share their knowledge with all of us. You should calm down again very quickly, because your statement is absolutely out of place.

[Javi]

Always positive,Mr Frits.Much encouragement to all.There are many of us who follow you.
Thanks to all.

[ceci]

Always positive,Mr Frits.Much encouragement to all.There are many of us who follow you.
In my land,that guy has a name,he's called a cobarde hijo de puta.

I have no sympathy for Luc Foekema.
I have never supported foekema in any publication.
You can be direct, but don't let others down "they will think that we are all just as direct"
That's why it doesn't take away to have good manners
And not have ugly words

[wobbly]

The template scenario for the Exhaust is I believe best implemented with a metal pattern , this can also have an added register plate welded to it to fix the top of cylinder positioning.
Any laser company will have the software to generate the shape from your chordal sketch , but free CAD software is easily obtained as well.
In any case the chordal shape will need to be used in a port analysis program , everyone here has access to these , whether a spreadsheet or something like EngMod.

I try to keep my written barbs under control , and rarely become abusive on here , but NoLuc instantly brings out the daggers - as his modus operandi has always been to display his
narcissistic personality disorder and tell us absolutely nothing of any use.

Im really fizzing at the bung right now ,as the months of work I put in paid off with a 1st/3rd podium at the Worlds in LeMans , so as Ken said , thanks everyone for the help.

[dtenney]

Modena tried to utilize the 24/7 reed valve in it's KZ motor. Do we have an understanding of how effective it was? Any insights are much appreciated.

[ceci]

Ceci,

Things are not so bad with the CIK and progress continues:

"It is now ok to paint the outside of the cylinder casting any colour, except blue and red combined"

Hi Ken

It is only a suggestion, since the CIK prohibits the use of electronics and makes it difficult to use the valve 24/7 by not being able to use servomotors.
A pneumatic actuation mechanism similar to the one that activates the RAVE valve could be used (it would be actuated with the pressure of the exhaust gases) and since the activation mechanism and the 24/7 valve are separated, we would need a hydraulic transmission mechanism to activate it.
It can be simpler than the mechanical cam mechanism on the crankshaft and efficient since when the carburetor is closed the engine does not drop rpm immediately.