ESE's works engine tuner

**Muciek** · 29th December 2016, 03:21

And the story continues... It looks like curve of the normal 2t there is still a "hole" before the powerband.

https://www.facebook.com/photo.php?f...type=1&theater

**koenich** · 29th December 2016, 05:50

thats a BMEP of >19 bar...uhm yeah

**adegnes** · 29th December 2016, 06:24

I'm dynoing the Spx again tomorrow, but can give you a sneak peak at the numbers already.

Click image for larger version.

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The secret is no fuel in the premix.

**F5 Dave** · 29th December 2016, 06:52

Wicked. Next an amsoil zealot will be along to tell you'd break a hundy.

**Flettner** · 29th December 2016, 08:32

Originally Posted by Muciek

And the story continues... It looks like curve of the normal 2t there is still a "hole" before the powerband.

https://www.facebook.com/photo.php?f...type=1&theater

So what are we looking at? First engine didn't do 70 hp and the production engine is only 40 hp? Are these predicted figures or real? Or is the lower curve some sort of torque curve? Here we bloody go again!

**husaberg** · 29th December 2016, 08:43

Originally Posted by Flettner

So what are we looking at? First engine didn't do 70 hp and the production engine is only 40 hp? Are these predicted figures or real? Or is the lower curve some sort of torque curve? Here we bloody go again!

Wob asked this question.
What has happened to the 50 previous " production " engines for homologation that made 70 Hp and reved to 30,000.
Luc answered this to a a question about the graph
The red is the special Ryger, the yellow the standard version. The lower 2 are torquelines.

**Flettner** · 29th December 2016, 08:54

So that's a BMEP of 270.4 we are comfortable with that? And where is this 30,000 rpm bullshit? This almost seems possible now with some mechanical reality admitted.
Original claim BMEP was 200 ish at 17500 / 18000 I believe, clearly the revs have had to be dropped to make it reliable but I would have thought the BMEP would have dropped as well? Lucky we don't know what we are talking about or this new Ryger power curve would not be possible. Luc says they have dropped the rev's to make the engine more usable, I guess that means so you can get more than one lap out of it

Case of another bit of fake facebook news I think, left had column divide by two perhaps.

**JanBros** · 29th December 2016, 10:06

Originally Posted by adegnes

I'm dynoing the Spx again tomorrow, but can give you a sneak peak at the numbers already.

I think you have one zero too much. surely you do not want us to believe your spx runs up to a wooping 5.000 rmp

**adegnes** · 29th December 2016, 10:12

Originally Posted by JanBros

I think you have one zero too much. surely you do not want us to believe your spx runs up to a wooping 5.000 rmp

Oops, missed that one.
The correct numbers are of course 900hp @ 500rpm
Still not bad for 50cc.

**wobbly** · 29th December 2016, 12:22

So now we have a completely new engine tune, and a dyno graph.
Problem is the "dyno " software is one I have never seen before,so one tends to start thinking this is just another scam,just like all
the other groundbreaking announcements that have proven to be utter bullshit.
But the restricted upper rev range is what I would expect from a 90mm rod on a 54.5mm stroke - the angular load on the vertical bearing must be really bad.

Yes I asked the question about the original 50 engines , as we were told we couldnt have one as they were all sold.
Now they have disappeared, and another " better " one has suddenly appeared.

The ONLY positive I have taken so far from any of this is that Frits seems to be truly convinced that what he drove all that time ago,
was pretty amazing.

Wish it were, I really do.

**TZ350** · 29th December 2016, 13:45

Page 1630....

Some links to YouTube clips of a couple of two stroke bikes modified for EFI.

Yamaha YZ250.

https://youtu.be/hOGZ5llowoU

https://youtu.be/UEQli7nuak4

https://youtu.be/1YG9ko8-Nwk

Kawasaki BigHorn.

https://youtu.be/eleqBGvOM4M

https://youtu.be/ifSEql1X4R0

https://youtu.be/CnIemdISKrM

Yamaha R5

https://youtu.be/qzVHgHJ9PWI

Originally Posted by mr bucketracer

race 1 from weekend
https://youtu.be/VjCtIDTSKRY

**sb07** · 29th December 2016, 22:16

Originally Posted by wobbly

The ONLY positive I have taken so far from any of this is that Frits seems to be truly convinced that what he drove all that time ago,
was pretty amazing.

Wish it were, I really do.

Santa Claus does not exist

**breezy** · 29th December 2016, 22:32

[QUOTE=wobbly;
"But the restricted upper rev range is what I would expect from a 90mm rod on a 54.5mm stroke - the angular load on the vertical bearing must be really bad."

Wobbly could this be reduced by offsetting the big end or small end of the conrod/lower piston connection?