We realy don't care about all those negative replies, we are use to it !
All those people will very soon be very quiet!!
We realy don't care about all those negative replies, we are use to it !
All those people will very soon be very quiet!!
oh sry - think I missed that doubt, questioning and scrutinizing claims are negative replies.
sure - soon we'll be quiet, as you already mentioned 20 times in the last 2 years
May be you have to learn some more, Read here what Jan Thiel wrote about some of my graphics.
https://www.facebook.com/luc.foekema...c_location=ufi
For people who don't have FB:
Quote from : Jan Thiel on October 18, 2012 , 06:17:55
Beautiful graphics Luc ! That 'red ' abilities are 100 % definitely achievable. It will , however, most of the time, and especially money, are missing...........
Quote from Jan Thiel November 19, 2015
Calculations with a specific program are certainly very useful!
I wish I had something at Aprilia, then I had definitely become further!
Why split the cylinder height reduction between head and barrel - 2mm off barrel, 2mm spigot on head? I like the spigotted head, saves dowelling/lining up sloppy head barrel fits, but how deep could one go? What clearance for the spigot?
Please?
About Ryger..
There are certain rules set by the universe of how much airflow you can get out of an certain area.
30mm(or 34mm, can´t remember) carburetor yes?
I am pretty sure a KZ2 prepared by wob would have run "nice" circles around your kart on that day. But that's just my personal opinion.
But anyway, as you mention the thinking part, I would like to offer you a technical discussion about the ryger engine. I hope that we will learn something from it, but based on the past, I don't think so. I did ask myself "where all that power could be coming from", and looking at the homologation documents and the pictures on the net, I don't see a reason why there should be "all that power", or even "as much power as the others". Because basically, due to the nature of the stepped piston, the ryger is a 125cc with reduced breathing capacity. If I had a horse and I would cut off one leg, there would be no reason this horse could then run faster, right? It's kind of the same with the ryger concept for me. So tell me, where did my thinking go wrong, what did I miss?
(by the way, the ryger is in no way "a clean two-stroke engine" just because it does not burn any oil. The main source of emissions on two-stroke engines is hydrocarbon emissions caused by scavenging losses of unburnt charge).
Jans comments were about the graphics you did of an RSA125 simulation,so have nothing to do with our discussion on here about the mystical Ryger horsepower.
In every other forum I have seen he completely rubbishes everything you have said, and you have said quite alot, but with NO PROOF of anything.
Showing us so called dyno graphs, that clearly have nothing to do with a dyno,then a video of some no name kart running around on a track with 4 stroke rentals
also has nothing to do with the engine being a success in reality.
On that video day it would be my opinion that DeConto would have been 2 seconds a lap faster, with a TM " only " revving to 15,000 ( proven ) with one flat tire ( joke ).
What you dont seem to understand is that everyone on here is really, really wanting this Ryger project to be a success, all you are doing is turning the whole thing to shit
by feeding us all so much unproven rubbish.
Please SHUTUP,until the new dyno Jan told me you have,produces something that is worth writing about.
Ive got a thing thats unique and new.To prove it I'll have the last laugh on you.Cause instead of one head I got two.And you know two heads are better than one.
+1 I guess
Hi,
I can imagine the main important difference ( except mechanical side ) , between "normal" and "ryger" engines, that can play different games inside the cylinder:
The main stream from carb sucked directly to transfer ports when piston moves up and together with pipe, maybe its very strong tandem.
When piston at BDC the squash between piston and small cylinder top edge generate strong stream directly to transfers ports (maybe, at high rpm piston is like ball between two different springs).
Main piston have minimal contact with main cylinder , piston ring work without side force from piston at TDC and BDC.
Smaller suction volume ( but on bigger capacity engines, difference between working and sucking volume not so big )
But maybe Frits theory play another game
About rygerised NS 250. Finished straight header pipe, brakes, suspension. Start engine again, want to hear rpm with and without pipe. So without pipe engine max. revs 10200 rpm. Can't remember rpm without pipe on std. engine. With new pipe 13400 rpm. but carb, ignition,.... This week want to install new radiator with hoses, and a lot of small things, that EAT so much time . Maybe next week will try it.
Interesting, from homologation, Ryger exhaust final section before stinger 29mm. Is it final dimension, or dimension before smaller tube.
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