ESE's works engine tuner

[wax]

I'm playing with a piston port cylinder at the moment which I have converted to a reed case engine. I have welded up the old intake and will now add a c port to the cylinder. I see some cylinders have two c ports where other ones have one. What the pro and cons of one or two. Thanks for the information you guys happily share on here

[41juergen]

I'm playing with a piston port cylinder at the moment which I have converted to a reed case engine. I have welded up the old intake and will now add a c port to the cylinder. I see some cylinders have two c ports where other ones have one. What the pro and cons of one or two. Thanks for the information you guys happily share on here

I would see some benefits for the larger/wider B ports when having only 1 (reasonable wide) C port. That supports high TA's for the overall transfers....
Am I right on my assumptions?

[lucf]

If for the benefits of power its not always the better. That depends on the combination with rpm and cilinder content, as well on bore and stroke.
You have to calculate before doing it in the blind.
https://www.facebook.com/notes/luc-f.../4063702169994

[Frits Overmars]

I would see some benefits for the larger/wider B ports when having only 1 (reasonable wide) C port. That supports high TA's for the overall transfers....
Am I right on my assumptions?

Yes you are.

[SwePatrick]

If being able to enlarge B-ports, go for it!
If not due to cylinderstuds etc etc go for bigger or more boostports.

Many many times tuning an engine is a whole lot of compromizes and one has to do the best of it.

More flow is more flow in the bottom end

[jonny quest]

India is big into these single cylinder drag bikes. Their pipes feature really cool rainbow finish. I'm almost positive the pipes are made of Stainless steel.

Does anyone know how they're applying this finish to them? The blues look really good!

[breezy]

Posted sketch long time ago, on down stroke air out through reed valve and then only vacuum.

add some video https://www.youtube.com/watch?v=zZWVO1tDCtg

item 54 pressure regulation of crank case

[wobbly]

Ha Ha again Luc, now you threaten us with not coming back on this board , well fucking great - you have contributed NOTHING to anyone's understanding of
a normal 2T,let alone any interesting Ryger operational info.

Re converting a piston port to reeds.
One trick is to weld in a bridge and use a boost port down each side.Combine this with oversize studs that are wasted
and you can make a huge intake port to support as much power as you want.
Here are some pics of a TZ250G cylinder with 58 stroke and 61.5 bore to run in a 350cc Classic LSR class on the salt.
Based on the work done for Eckerolds 350GP winning cylinder.
Over 100 Hp capable.

[wax]

That looks awesome wobbly.
Here is what I am doing at the moment. The studs get in the way of going for bigger b ports, the situation leaves me as only being able to make c ports. I was planing on two ports but if you think one bigger ones is better then I will go to that.

[wobbly]

So Luc, please now explain in plain English so us dummies understand.Why is it we have a graph of a KZ Vs a Ryger,when EVERY stock KZ engine I
have tested ( many ) make at least 45HP at 13,000 rpm peak.I dont see any numbers like those on this graph ?

[Michael Moore]

Photo #4 in wobbly's post above is in my garage when the final base decking was being done on my Tree/TOS CNC mill. Since Jeff is building two cylinders being able to swap them out on the fixture plate and push the button to do another one has been handy. I made the top and bottom spacer plates and we ran the same facing operation on the base surface after welding to get a datum surface so Jeff could determine the location for the final facing operation.

I suspect that Jeff is now not far from having a full work-week invested in welding on the two cylinders. It will be interesting to see how it runs.

cheers,
Michael

[jamathi]

So Luc, please now explain in plain English so us dummies understand.Why is it we have a graph of a KZ Vs a Ryger,when EVERY stock KZ engine I
have tested ( many ) make at least 45HP at 13,000 rpm peak.I dont see any numbers like those on this graph ?

We should now see Ryger engines winning races very soon.....
With at least half a lap advantage over the first KZ.
Because otherwise NO ONE will buy such an engine!
Of course, this may be another computer simulation trick.
We will see soon enough!
Or maybe we will have to wait 2 years again, who knows?

[katinas]

I noticed a lot of back pulses through the carb at the lower rev range and vanished when it really came on.
It there any way to reduce these pulses ?
Compared to a standard engine, have you noticed any gains in the work you have been doing?
Neil

Now its very similar to tuned standard, but no more ( around 35 hp)

0-3600 rpm - like std, maybe better

4000-7500 rpm - no power at all (much worse than std)

8000-8600 rpm - some signs of life, but with terrible noise ( first reaction was shut off everything, like huge detonation or exhaust gas to carb through C port )

8700-11500 rpm. - all become quite, just power

To stop back pulses, made plate to cover central intake window, but done this before lowered compression and before bigger stinger, power increase and this was first time that I feel real progress. After made 29 mm stinger, put off plate and power decreases little, but not like before. Then lowered compression and huge power increase. This is last test, so I do not know how engine will work with plate and lower compression. So this video done without plate, but with lower compression.

https://www.youtube.com/watch?v=zZWVO1tDCtg

[katinas]

Yes Katinas, that is right, the Ryger is not running on the pipe as normal with a twostroke.
And there is far more to tell, where nobody thought or wrote about till sofar !!
That is why Ryger is a different 2 stroke principle with new twostroke laws and proofs this is not "bullshit".
Also when I wrote that 30k is realy possible, but not advisible for a too easy breakdown and we succeed to make this lower.
Some little proofs about the mentionned powergraphic, (which nobody believes) wil follow.
Also the proof for a trackrecord will follow soon.

Thanks Luc for your replay, I want to clarify that I try it without pipe at all, and just with pipe header. Exactly with header it revs like with all pipe. Of course its static test and very short before "angry birds ".......



https://youtu.be/TB9PGPnSEtA

https://youtu.be/458kepm8QGk

[jellert]

Also the proof for a trackrecord will follow soon.

Let me guess, the track record at Eefde? Please do show us.