ESE's works engine tuner

[Flettner]

Thanks, never noticed this before.

Actually its not right to do it this way, too slow on the delivery vers load.
My 360 engine has a hollow crankshaft, a wee seal in the outside case. Hollow all the way to the inside of the crank pin, with a small hole in it, direct to the bigend rollers. Out side of this wee seal is open to air filter air via a small one way valve, one way valve for low speed operation and starting. Air is contantly being injested through this crankshaft cavity, oil is introduced to this inflow of air from the autolube pump.
Oil (and filtered air) is being contantly directed straight to the inside of the bigend rollers, instantly with load. Does not upset carburation, because there is none.

Opps, better patent it.

[F5 Dave]

Mate. glad to have met you. You're a star.

[Frits Overmars]

Interesting solution for oil supply to crank big end main on Honda test NR 125 engine.

BMW used this system for decades on their roller-bearing boxers. The oil catch rings #10 feed oil into the hollow big end pins #12.

[katinas]

Opps ...... Neil, indeed you words under a magnifying glass.

Frits, it was only today that I noticed all this in the Beckman's book, I had had all my life. Probably, because I never looked closely at the four-stroke. Add pic of Jawa 350 cc and Vostok C/364 350cc engines.

Add chart of race fuels composition/compression from this old book, maybe it will be useful for someone.

[katinas]

If, two years ago I started testing not from 3 type, but from type 4, it is very likely that I mistakenly stated that this cannot work. It is a coincidence.

The results of all current the tests merged into this concept ( with Neil's FI ), but with two stroke very easy to go wrong.

[Flettner]

Finaly getting the time to finish a gear for a special road race / twostroke / development Kiwibiker celebrity.
Code for, sorry TZ its taken so long but its being done as I wright.
Its the internal grinding that takes the time. Gear material is EN39B case hardened to 60R.

[TZ350]

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Finaly getting the time to finish a gear for a special road race / twostroke / development .

Pre 72 Classic replica Kawasaki F81M based road racer. Very Excited.

[pete376403]

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Pre 72 Classic replica Kawasaki F81M based road racer. Very Excited.

Harry Klemms website has lots of great info about the F9 that would probably apply to this

[husaberg]

Finaly getting the time to finish a gear for a special road race / twostroke / development Kiwibiker celebrity.
Code for, sorry TZ its taken so long but its being done as I wright.
Its the internal grinding that takes the time. Gear material is EN39B case hardened to 60R.

i remember reading something that the some of the gears or the cluster were the same as the H1.
that might have been on the site mentioned above. Which Rob has posted about before.
i think someone in the Waikato with knobbly knees might have made a head for one previously or maybe for them as well is that right?

okay its likely what you are doing anyway..

[Peter1962]

Actually its not right to do it this way, too slow on the delivery vers load.
My 360 engine has a hollow crankshaft, a wee seal in the outside case. Hollow all the way to the inside of the crank pin, with a small hole in it, direct to the bigend rollers. Out side of this wee seal is open to air filter air via a small one way valve, one way valve for low speed operation and starting. Air is contantly being injested through this crankshaft cavity, oil is introduced to this inflow of air from the autolube pump.
Oil (and filtered air) is being contantly directed straight to the inside of the bigend rollers, instantly with load. Does not upset carburation, because there is none.

Opps, better patent it.

Neil, what is the reason that you chose to use a forced lubrication system combined with an influx of air ? Wouldn't it be logic to only use an oilpump ? (be it mechanical like in the old days, or an electronic mikuni esops-04 pump like on the ktm TPI models ? )
The aim is to get oil to the bigend rollers, i do not quite see what the additional air could be off benefit ?
What made you choose this approach ?

[Flettner]

I do use an Autolube pump to deliver to the crankshaft. The crankshaft is hollow with some volume. As the oil pump suddenly delivers more oil as required by load the pump may take time to fill this cavity to a point where oil is flung out via internal drilling to the bigend pin. So I figured if air was continuously flowing it would help carry this oil much quicker to where its needed.
Much like delivering oil to the air inlet stream as almost all normal Autolube systems.
Thats my story and Im sticking to it.

[Frits Overmars]

I do use an Autolube pump to deliver to the crankshaft. The crankshaft is hollow with some volume. As the oil pump suddenly delivers more oil as required by load the pump may take time to fill this cavity to a point where oil is flung out via internal drilling to the bigend pin. So I figured if air was continuously flowing it would help carry this oil much quicker to where its needed. Much like delivering oil to the air inlet stream as almost all normal Autolube systems.
Thats my story and Im sticking to it.

An aircooled big end!

[Niels Abildgaard]

Opps ......
Add pic of Jawa 350 cc and Vostok C/364 350cc engines.

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The drawings shows crankshafts that are assembled by Hirth method I think.That was a very expensive way to do it but enabled rolling element bearings even in fourstrokes.
Those socialist countries took racing very seriously indeed.

[husaberg]

The drawings shows crankshafts that are assembled by Hirth method I think.That was a very expensive way to do it but enabled rolling element bearings even in fourstrokes.
Those socialist countries took racing very seriously indeed.

As did those West Germans.
Adler



then the Swiss
with the Swissauto/roc/MUZ/Pulse

[katinas]

As did those West Germans.
Adler

And the same on the soviets Bихрь outboard engine that was copied from Konig and modified through years.
For me it is still most nostalgic engine. As a child in the seventies, when my dad was a rowing coach, I spent my summers in the motorboat 4 hours a day and always sat in the back at this engine, which my dad didn't cover with a hood.
I later installed this std engine on my first motorcycle. Not impressive 30 hp at 5000 rpm from 488cc two cylinders 72x60mm. But after working with file on exhaust 195, disc vale 40 open after bottom, 74 closing after top, steel pistons rings and bigger 36 mm Ikov carb from CZ cross engine runs in the 10000 rpm zone. Std Jawa 350 clutch retaining rivets were cut off after the first ride.
Even a monument was built for this engine, with an inscription "Motor Bихрь - with love and hate"