A NEW Bike for SOMAMECH

[Somamech]

You can see why I chose a Honda CBR 250 RR Engine.

This Kart had a 6 speed Sequential shift pneumatically controlled from the steering wheel.
I also modified the engine to have a dry sump.

The Sensors you see, involves HT feed back where we were analysing the air/fuel ratio
by feedback (Electronic) from the burn inside each cylinder. The other is an O2 sensor
in the exhaust.

In the 1980's and 90's I designed and Manufactured "Closed Loop" Ignition control Computers
as well as Closed Loop EFI systems which used pressure sensors encapsulated in the base of spark plugs
to directly control Ignition timing and air/fuel mixtures independently in each Cylinder.

We were detecting the Insulation Mode (Involving the thermal cycles see... "Carnot's Thermal Cycle")

This involved monitoring in real time, the "Insulation Cycle" involving a sudden rise in Cylinder pressure
after each Ignition cycle.
(Which by technicians was often confused with detonation i.e. Fuel Nock.        )

My interest in the design of "High Performance Competition Engines" back then, involved thermodynamics...   

This may interest some esp. Soma and PWM.


http://en.wikipedia.org/wiki/Carnot_cycle




The "Carnot Cycle" when acting as a heat engine consists of the following steps:

1.    Reversible isothermal expansion of the gas at the "hot" temperature, T1
(isothermal heat addition or absorption).
During this step (1 to 2 on Figure 1, A to B in Figure 2) the gas is allowed to expand
and it does work on the surroundings.
The temperature of the gas does not change during the process, and thus the expansion is isothermal.
The gas expansion is propelled by absorption of heat energy Q1 and of entropy \Delta S=Q_1/T_1
from the high temperature reservoir.

2.    Isentropic (reversible adiabatic) expansion of the gas (isentropic work output).
For this step (2 to 3 on Figure 1, B to C in Figure 2) the piston and cylinder are assumed to be thermally insulated,
thus they neither gain nor lose heat.
The gas continues to expand, doing work on the surroundings, and losing an equivalent amount of internal energy.
The gas expansion causes it to cool to the "cold" temperature, T2. The entropy remains unchanged.

3.    Reversible isothermal compression of the gas at the "cold" temperature, T2.
(isothermal heat rejection) (3 to 4 on Figure 1, C to D on Figure 2)
Now the surroundings do work on the gas, causing an amount of heat energy Q2 and of entropy \Delta S=Q_2/T_2
to flow out of the gas to the low temperature reservoir.
(This is the same amount of entropy absorbed in step 1, as can be seen from the Clausius inequality.)

4.    Isentropic compression of the gas (isentropic work input). (4 to 1 on Figure 1, D to A on Figure 2)
Once again the piston and cylinder are assumed to be thermally insulated.
During this step, the surroundings do work on the gas, increasing its internal energy and compressing it,
causing the temperature to rise to T1. The entropy remains unchanged.
At this point the gas is in the same state as at the start of step 1.

Definetley interesting MT, and from what I have read on the Motomatters website regarding some of ducati's woes about an agressive engine come from the supposed fact that Honda and Yamaha have Two Fuel Injector's per cyclinder rather than one. 

One thing is for certain as reported on MM is that ECU programmers make some bucks as they can anylise data, and the good one's are some of the highest paid in the paddock 

[Elvis Hendrix]

God the NR 750. That takes me back.
Stealth what about the RC45... Collin Edwards an all that.
Honda have the vision.

[Somamech]

Whats sorta intersting as you guy's are way above my Tech level.

But regarding what you said Matrix in the past is how the Dynamic Converters work,  Although I don't understand that completeley.... (really I don't but it sounds elegant and simple which I like)

I was thinking just before about making a Lord Kelvin Generator and how the principles in that work in a dynamic converter. 

Just throwing a thought out there as a Lord Kelvin Generator is simple to make

[Elvis Hendrix]

That Honda v 4 has had many guises, and its always been great.
I took a VFR down through France and Spain and it was a great motorbike.
So great low down. My mate was on a blade and it wasn't any quicker in the real world.

[Somamech]

Hey Elvis did you see the interview with MM93 today ?

He said it's great to have Casey Testing!   

I think it must be about about the first time a rider who should be kicking arse in a Championship said sayonora and test's for Nakamoto san

MM93 .. wiked rider! 

Hope Cal doe's well though man as he is also the most interesting rider in MGP now.  And we all want to see Ducati doing well. 

[The Matrix Traveller]

But regarding what you said Matrix in the past is how the Dynamic Converters work,  Although I don't understand that completeley.... (really I don't but it sounds elegant and simple which I like)

I have decided to rebuild a single wheel version of that Dynamic Converter, having a 100 mm Diameter
wheel, to demonstrate on Pegasus. A bit busy at present but will do this in the new year.

What this baby does is convert Centrifugal force into a useful means of shifting something at very high speeds
involving very high acceleration.

Soma you know how out of balance things in rotation can reek havoc and can destroy mechanical things ?

For example a flywheel being 5 oz "out of balance" (Static Balance)

Where;

The Radius            = 100 mm
The angular speed = 4,000 rpm
The Mass              = 5 oz or about 28 grams (Out of Balance)

Produces 559 lbs/force  or 253 Kg/force.   

See Centrifugal Calculator.

http://www.calctool.org/CALC/phys/newtonian/centrifugal

And if you double the rpm the force increases 4 times.

at 5,000 rpm  2,236 lbs/force  or 1,812 Kg/force.   


And doubling the rpm again to 10,000 rpm

8,944 lbs/force  or 7,248 Kg/force.   


Now the Trick is to produce this force through an ark of say 10 to 90°.
(Depending on the mas you want to apply)

We use water as the mas.

We captivate the water over an ark of 90° and release the water from the wheel
over the other 270°

This gives us a Force in the direction the water (mas) is captivated in the wheel in relation to its axis
of rotation. (Centrifugally)


In the case of the wheel I'm going to use, (100 mm in diameter) I will rotate this up to about 500,000 rpm
using a high speed brushless electric motor, easily obtained.

The direction of the "force", is determined by the placement of a calliper which captivates the water
in the wheel.

And the force produced is determined by the amount of water (mas) captivated in the tear drop Cavities
in the wheel.

NOTE. Where the water (mas) is captivated in the wheel Centrifugal Force is produced.
But where the water (mas) is allowed to escape there is NO Centrifugal force present.

So now we have a directional projection of "Centrifugal force".

The real deal involves 12 such wheels (Larger) per Converter module, in the form of a "Stack"
each wheel having callipers, so the Converter looks similar to a multi plate clutch as in the case of
a motorcycle clutch.   

The wheels look like this;

There is a technique in loading the water into the wheels which I will go into later. And of course
the water is recovered and recycled within the Dynamic Converter itself.

[Somamech]

Soma you know how out of balance things in rotation can reek havoc and can destroy mechanical things ?

Yes indeed I know that well, almost too well regarding my current bike and a certian bike shop that don't check over wheel's, stems, bottom brackets when they assemble them.  I am pretty much left with a heaping pile of crap right now due to poor rotational checking, and really not happy with it


   

[The Matrix Traveller]

Here is a drawing showing How this force can be applied in craft etc.

Where I have written Exhaust is where the water (Mas) flows freely and does NOT produce Centrifugal force,
and the water leaves the wheel at a tangent.

But where the Calliper is shown on the left hand side, (a bit like a break calliper used in disc breaks)
the water is trapped in the wheel, producing Centrifugal force..

The Placement of the Calliper decides the direction of the force and the direction the craft will move in !   

Thousands of Tons of Force can easily be produced ! 

[Somamech]

Hey thanks for the Math on that one MT !

I am not the smarts on the block thats for sure, but your application does ring bells with me!

I could say I find it odd, but also I don't find it that odd the converters use water. 

Expect a mega Hooman Water post in your section soon mate  

I hope my simple understanding will help with people understanding your more elegant and detailed undertsanding. 

[Somamech]

Where does the Water go though after existing the exhaust ?

 

[The Matrix Traveller]

Thanks Soma,
As you can see the principle is very, very, simple... 

[The Matrix Traveller]

It is collected in a "Square Tank" the Wheels rotate in, and then delivered to a "Pre Rotator"
in the Centre of the Wheel Cluster.

[The Matrix Traveller]

The Key to water handling is in the design of the "Pre Rotator".

[Somamech]

Hey thanks mate!

This is sounding a little like my backyard water experiments using some over-priced water vortex pipes in circulation!

They do work, but how people charge so much considering the Bill of Materials baffles me :O

I can leave a 200 litre drum circulating with aussie tap water from melbourne, come out an hour or two later to check the drum and the water feels like silk for a lack of a better term.

[Somamech]

Damn man you had me sitting here thinking whats this sqaure you talk about ?  LOL

Yes That Square LOL