ESE's works engine tuner

[seymour14]

Fat cunt...

Kentucky Fat Cunt?

[F5 Dave]

You might as well throw in minimum weight into the rumour mill as well...

TZ's comments above are concerning, last thing we want is constant rule changes for a class that has had minimum interference over the years. Personally I'm not really a fan of the 110cc rule, however if it enables more people to have more fun - then success..

Other rumours heard are splitting the classes (bikes with GP running gear) and even opening up a post/classic bucket class... TZ - I look forward to having a catchup and a brew at Tokoroa.

I heard its all electric by 2017.

[Pumba]

First time in years that I have felt qualified to comment on the content of this thread.

... yes that would be fair, kitted up Rider plus Bike = 220kgs min, do away with that light bike skinny kid advantage, level playing field and all that.

Now you re talking

Now we are talking Rob! I think 190kg is fair (don't ask where I got that figure, and there's no hidden agenda)

Fucking light weight racers

no no no 200kg (-; that way we can still have kfc

I do like KFC

I heard its all electric by 2017.

I have already started buying the extension cords

[41juergen]

Red line best power with the original main and 1.25 air correction jet. Blue line, 1.45 air correction plus bigger main jet.

Great to have such a clear result of what can be achieved by adjusting the air correction jet to bend the fueling curve.

TeeZee: I remember you did some tests on the dyno some (100 ) pages back. Do you still know which page you showed the results? And do you had a chance to use a A/F meter at that time?
Juergen

[seattle smitty]

The history of Racing is littered with good ideas that have effectively been banned because others have been to lazy or technically challenged to keep up. In Buckets, part of winning is building something special, and in this class I think attempts to limit that are wrong.

Bravo!

Will you make a place in the class for this guy?:

https://www.youtube.com/watch?v=GLLs_KnT0Lk

[TZ350]

TeeZee: I remember you did some tests on the dyno some (100 ) pages back. Do you still know which page you showed the results? And do you had a chance to use a A/F meter at that time?
Juergen

No sorry, but under "Thread Tools" which is near the top right hand side of the page, you can "View Thread Images" and sort them into 70 per page. When you find an interesting image click on the N/A sign to see the post, there are more than 7,000 images.

When I was playing with EFI I did use a A/F meter but with a 2T there are traps as the A/F reading is seemingly rich when the trapping efficiency is not good, like when you are moving away from peak torque or well out of the power band.

The A/F meter accuracy seemed at its best when the rpm was at peak torque, every where else it indicated varying degrees of rich but was not. Frits put me on to this, the indicated richness was just air/fuel being blown through the exhaust port and lost down the pipe the remaining air/fuel that got trapped in the cylinder burnt correctly, all the air/fuel was of the correct strength for good combustion just some was not trapped and consequently lost and looked to the meter like the engine was running rich when in fact it was not.

[Flettner]

So, HCCI, how good is that. I've just been reading up on the ignition process (google it) and it turns out we have been heading down the wrong track with spark plugs all this time HCCI process is best at everything ...... accept being able to control it under all engine conditions
There seems to have been a lot of research on this process and only Ryger appear to have cracked it, and they still run a spark plug. Imagine having a non direct injection engine running with no spark plug, model engines do it with compression adjustment to get the timing crack on. Be it at only constant RPM. Thoughts anyone?

[MotleyCrue]

So, HCCI, how good is that. I've just been reading up on the ignition process (google it) and it turns out we have been heading down the wrong track with spark plugs all this time HCCI process is best at everything ...... accept being able to control it under all engine conditions
There seems to have been a lot of research on this process and only Ryger appear to have cracked it, and they still run a spark plug. Imagine having a non direct injection engine running with no spark plug, model engines do it with compression adjustment to get the timing crack on. Be it at only constant RPM. Thoughts anyone?

From what I have read HCCI has been the next big thing for 30+ years. Lot of controls needed making the usual complexity of a modern ECU 4 stroke OEM auto engine even more complex than it already is, and yet it still only works at part load. HCCI might work in the Ryger at just the right conditions, but working under all conditions without extensive ECU controls and such, only in dreams I think.

[Haufen]

So, HCCI, how good is that. I've just been reading up on the ignition process (google it) and it turns out we have been heading down the wrong track with spark plugs all this time HCCI process is best at everything ...... accept being able to control it under all engine conditions
There seems to have been a lot of research on this process and only Ryger appear to have cracked it, and they still run a spark plug. Imagine having a non direct injection engine running with no spark plug, model engines do it with compression adjustment to get the timing crack on. Be it at only constant RPM. Thoughts anyone?

It is highly unlikely that the Ryger is running full load HCCI. Remember, Honda could not do it on a two-stroke, and the Car companies can not either. HCCI is a part load thing, and usually utilized to improve fuel consumption in the lower part load area. By the way, although many car manufacturers have road tested HCCI in prototypes on the test bench and on the road, there is not a single car on the market being sold which uses HCCI, afaik.

If the Ryger should be working without a spark plug at some high rpm / high load areas, then it is much more likely preignition than HCCI. If it needs a smaller radiator despite more than usual power, then it can still have a more efficient burn compared to conventional engines, but that efficient burn won't be what is usually called HCCI or CAI.

[Frits Overmars]

So, HCCI, how good is that. I've just been reading up on the ignition process...

Do you think it will be a good idea to dump the same HCCI information overload on the rest of the gang here Neil? Oh well, here y'all go. Bring your own aspirin.

EDIT: after trying to upload three times I discovered that the maximum permitted file size for ZIP-files is 2MB. My HCCI.ZIP is 22,2 MB....

[Frits Overmars]

It is highly unlikely that the Ryger is running full load HCCI. Remember, Honda could not do it on a two-stroke.

Compared to the Ryger engine, full load HCCI is not the only thing Honda could not do on a two-stroke .

[tjbw]

So, HCCI, how good is that. I've just been reading up on the ignition process (google it) and it turns out we have been heading down the wrong track with spark plugs all this time HCCI process is best at everything ...... accept being able to control it under all engine conditions
There seems to have been a lot of research on this process and only Ryger appear to have cracked it, and they still run a spark plug. Imagine having a non direct injection engine running with no spark plug, model engines do it with compression adjustment to get the timing crack on. Be it at only constant RPM. Thoughts anyone?

Honda had success with EXP-2 in the 1995 Paris-Dakar rally, but then what?

"In 1995 Honda re-entered the Paris-Dakar with a bang. The EXP-2 was a radically new and different motorbike, equipped with a revolutionary 400ccm two-stroke engine. After two weeks of racing the african dessert Jean Brucy finished 5th overall and first place in the under-500ccm class."

http://www.honda-museum.com/honda-exp-2/

I'm very much looking forward to the Ryger debut.

[tjbw]

Do you think it will be a good idea to dump the same HCCI information overload on the rest of the gang here Neil? Oh well, here y'all go. Bring your own aspirin.

EDIT: after trying to upload three times I discovered that the maximum permitted file size for ZIP-files is 2MB. My HCCI.ZIP is 22,2 MB....

Frits, could you store the large file using Dropbox, or a similar free cloud service, and share the link?

[Frits Overmars]

Honda had success with EXP-2 in the 1995 Paris-Dakar rally, but then what?

Then the management overruled the engineers. "Honda is a four-stroke company" ...

[Haufen]

Compared to the Ryger engine, full load HCCI is not the only thing Honda could not do on a two-stroke .

And I like that fact just as much as you do But I do give them credit for at least using HCCI in a racing two-stroke engine. Nobody else does. Or am I wrong?