ESE's works engine tuner

[Vannik]

820 cc incl.transfer

Thank you!

[JanBros]

aparently there was an error in a BMEP-link in my 2-stroke excel, fixed it now.

and now there is a way of printing the portmap to actual size, so you can print it, cut out the ports and place it in your cylinder to see where you have to grind the ports some more.

links in updated topic : https://www.kiwibiker.co.nz/forums/s...eads-and-pipes

anyone used it already ? any comments ?

[jfn2]

JanBros
I seem to have a problem bring up your second (revised) edition in my excel program. Your first edition worked fine. I admit I have a dated excel program. By the way, it looks like a very nice program.

[wobbly]

A customer wants a new pipe design , the existing pipe is rumored to be a Aprilia Type 21 , I had this design on an old hard drive I cant find.
Anyone got the dimensions ?

[teriks]

Vagelis posted that and a few more on PitLane some time ago.
http://www.pit-lane.biz/t3173p975-gp...-part-2-locked

Tubo21 from his post

[husaberg]

Vagelis posted that and a few more on PitLane some time ago.
http://www.pit-lane.biz/t3173p975-gp...-part-2-locked

Tubo21 from his post

Here is afew more compared
https://www.kiwibiker.co.nz/forums/a...hmentid=310144
https://www.kiwibiker.co.nz/forums/a...id=4854&page=3
I cant remember what this one was though?
One of Wobs?
https://www.kiwibiker.co.nz/forums/a...hmentid=310087

[andreas]

Aha why not three times

[JanBros]

JanBros
I seem to have a problem bring up your second (revised) edition in my excel program. Your first edition worked fine. I admit I have a dated excel program. By the way, it looks like a very nice program.

If you want me to help, you'll have to explain the problem

[Frits Overmars]

A customer wants a new pipe design , the existing pipe is rumored to be a Aprilia Type 21 , I had this design on an old hard drive I cant find. Anyone got the dimensions ?

Take your pic, Wob.

[jfn2]

JanBros
Sent you a PM (I think).

[teriks]

Take your pic, Wob.

^^ ..and there I guess we have the source of Vagelis version.

[Emily Strange]

Good morning. My name is Emily, this is my first comment on this forum although I've been a lurker for a year or so.

I have been heavily involved in two stroke bikes for over forty years now including racing, and crashing, most of the classic two stroke bikes that are now worth a small fortune. My interest is mainly engine development and technology, this thread has been highly educational as well as amusing at times. I am involved in development of two stroke engines, usually at my own expense(!) but increasingly companies are looking outside of the usual four stoke/ diesel engines for alternative technology, there is a huge amount of attention to patents many going back decades.

Changing subject but still involved with the two strokes there are many new aerospace plating technologies coming through and on the horizon. Although there are or will be technical challenges to overcome some of the new low friction plating technologies are opening up the possibility of ultra low oil through the two stroke engine, with the ultimate possibility of no oil becoming a reality in the near future. This is just one of the fields that I am working in.

Can I add my thanks to Frits Overmars and Jan Thiel for your input and sharing of knowledge? We all stand on the shoulders of giants relying on previous peoples efforts before pushing the boundaries to add our own little advances but the progress that these two Gentlemen have added to the world of two stroke engines cannot be underestimated. To me they have brought in the third age of two stroke engineering, the first being Walter Kaaden & MZ in the Eastern Block and the second being the Degner and Suzuki, et al developments.

Frits do you still work or consult in the field of two strokes? Perhaps a message or some way of a quick private exchange can be arranged? I would be very grateful if this can be achieved. And can I add my vote that a book would be very well received? No pressure... ;-)
I write technical books from time to time and translate some Japanese manuals to English occasionally.

That's enough for now! I'm happy to see that reports of the death of the two stroke are premature to say the least! Keep up the good work guys.

[Frits Overmars]

That was quite an intriguing presentation Emily, you certainly know how to make someone curious.
I still do some consultancy work, mainly in the field of two-stroke engines, with chassis design as a second hobby, so my days are well filled. Nevertheless, I agree that we should be in contact with each other, but as a form of self-protection, I have blocked private messages in the public forums that I visit, and I try to keep my mail and phone details to myself. If I do wish to communicate privately, I prefer to do so via email, and not via telephone, Whatsapp or, God forbid, Fakebook.
If you wish, you can leave your e-mail address at the temporary address xxxx@yyyyy.zzz. Anyone who uses this address uninvited will be punished with a fate worse than death. I don't know exactly how yet, but I will think of something extremely frightening.

Well, we finished that. Can you tell us some more about yourself and about your activities Emily? With images maybe?

[Emily Strange]

Hi Frits,

Thank you for your prompt reply. I have sent a message to your email address please modify your post to delete the email address.

I am happy to share information and discuss things with you and everybody on here. I am however subject to a number on non-disclosure agreements so I will not be able to discuss anything other than publicly available information on some subjects.

I will dig some photo's out and post them when I have a spare minute or two.

Emily.

[MotleyCrue]

If there were a way to run a square top edge on the exhaust port, and similarly remove the bridge between A and B ports, or the bridge between B and C ports, while still running a square top edge on those ports, all without breaking rings, would you, and if so which of the 3 changes would you make ?