ESE's works engine tuner

[jonny quest]

Here's the FIA F3 Tech rules definition on supercharging from 2013. A somewhat more comprehensive volume of regs.

1.11 Supercharging:
Increasing the weight of the charge of the fuel/air mixture in the combustion chamber (over the weight
induced by normal atmospheric pressure, ram effect and dynamic effects in the intake and/or exhaust
system) by any means whatsoever. The injection of fuel under pressure is not considered to be
supercharging.


If that was dropped into todays CIK-FIA KZ2 regs, all current homologated engines would pass

So if your VE is over 100%, your engine is supercharged. Good to know

[wobbly]

As I said just up a few posts its pipe dynamic effects in a 2T that create a VE over 100% , and because this gain isnt
"mechanically assisted " in any way its legal.
My take on the transfer config in the Ryger is based on Frits 24/7 reed principal ( that we know works ) and the tiny slip
made when the spacer under the cylinder was refereed to somewhere as a "valve plate ".
Several times I have said that we cannot see a reed block flange clamped between the rubber manifold and the reed box that has
been added to the stock cylinder, so logic dictates that reverse flow is prevented at another location, just not right at the carb exit.

[Tim Ey]

Hey everyone!

As in this place are a lot of twostroke addicts, I may ask if someone has fitted an Ignitech DC-CDI-P2-race to a stock Aprilia RS250 / Suzuki RGV250.

There are some questions that occured to me:
-How do I manage to work with the "solenoid" that goes to the carbs? I did not have the time jet to check when it opens and what the point of this system is. My guess is that its influence might not be very hugh - because its hose diameter is quite narrow.
-Has anyone measured an original ignition / powervalve actuator over TPS and RPM? I do not want to start at zero :-)
-Has some of you made an Engmod File for this bike? Or otherway round: Does anyone know how much ccm crankhouse volume the left and right cylinder have? I have taken a look through the reed inlet and the volume seems to be hugh...

Cheers!
Tim

[adegnes]

Yep

[jonny quest]

Post a pic of the cutaway Agnes!

Did you do anything to the insides?

Very clever!

[ken seeber]

Here's the FIA F3 Tech rules definition on supercharging from 2013. A somewhat more comprehensive volume of regs.

1.11 Supercharging:
Increasing the weight of the charge of the fuel/air mixture in the combustion chamber (over the weight
induced by normal atmospheric pressure, ram effect and dynamic effects in the intake and/or exhaust
system) by any means whatsoever. The injection of fuel under pressure is not considered to be
supercharging.


If that was dropped into todays CIK-FIA KZ2 regs, all current homologated engines would pass

Actually, DF, I disagree. There are so many flaws in these words:

1. What is the combustion chamber? The volume defined by the head and piston at absolute TDC? The swept displacement of the piston and where’s that from, BDC or when the exh valve or port shuts?
2. To me this could rule out a conventional (not possibly Ryger) crankcase scavenged 2 strokes as we currently know them. This is because they utilize a pump (the changing volume in the crankcase) to push air or air/fuel into the working cylinder (whatever that is) at parts of its operation, irrespective of the pumping displacement of the pump relative to the working cylinder.
3. This would also rule out air assisted direct injection, which with the Orbital system used a small compressor of around 3 – 4 % of the engine displacement. A good technology eliminated.

Anyone want to write some sensible rules? How about “we give you all X litres of fuel and you have to do X laps” and you can use whatever you want/brung to do it with.

[WilDun]

To digress a little :-
Frits, does the Ryger need to have a plated (or hard) bore?

[speedpro]

Or box racing. If it fits in the box you can race it.

[adegnes]

Post a pic of the cutaway Agnes!

Did you do anything to the insides?

Very clever!

Thanks!

All I did was tear out the windigs.

[philou]

What is the mass of the rotor ?

[adegnes]

What is the mass of the rotor ?

2.17kgm2, the plan is to make a detachable flywheel for the axle, bumping it up to around 6-7kgm2 when needed.

[Frits Overmars]

Anyone want to write some sensible rules? How about “we give you all X litres of fuel and you have to do X laps” and you can use whatever you want/brung to do it with.

I'm all for it.

2.17kgm2, the plan is to make a detachable flywheel for the axle, bumping it up to around 6-7kgm2 when needed.

Watch your rotor rpm, Adegnes. It will certainly be higher than the original motor's design rpm. The bearings may not be up to it in the long run.
And I don't know how strong the rotor structure itself is, but you don't want to be in the same time zone when it explodes.

[adegnes]

I'm all for it.


Watch your rotor rpm, Adegnes. It will certainly be higher than the original motor's design rpm. The bearings may not be up to it in the long run.
And I don't know how strong the rotor structure itself is, but you don't want to be in the same time zone when it explodes.

I share your concern. The bearings should be fine up to 4500rpm, more with limited lifespan(skf 6316,6319), the rotor at least 3000rpm continuous cause thats what the motor was spinning.
70mph+ with my scooter on it, no vibration or other scary stuff.
It'll be fine!(famous last words...)

[Sketchy_Racer]

I share your concern. The bearings should be fine up to 4500rpm, more with limited lifespan(skf 6316,6319), the rotor at least 3000rpm continues cause thats what the motor was spinning.
70mph+ with my scooter on it, no vibration or other scary stuff.
It'll be fine!(famous last words...)

What diameter is the shaft? I'm guessing it will be pretty big if your inertia is that high!

[adegnes]

What diameter is the shaft? I'm guessing it will be pretty big if your inertia is that high!

80mm shaft.
Same Sketchy_Racer as on the Simple Dyno forum?