ESE's works engine tuner

[husaberg]

i thought i read the yzm 500 was only used two years on works bikes. sounds like only eight were ever made

https://motocrossactionmag.com/amp/1...inum-was-cool/

of that model maybe but the 1986 YZ500 OW66 was also called a YZM as were heaps of other bikes of multiple cc's and years.
Like the 1983 YZM500 OW50

---

I found this 1983.
Satoru Shoji's '83 All Japan Championship winning works bike
It might be an interest to Frits and Jan
Yamaha rotary disc valve 125. OW67 or 1983 yzm125
I have not seen this one mentioned previously.

it also race in the USA and by the look of it Europe

[Michael Moore]

A similar rotary valve CZ from 1983, it must have been all the rage.

[Flettner]

Haha, amateurs.

[husaberg]

A similar rotary valve CZ from 1983, it must have been all the rage.

Honda

did them as well as Cagiva.https://www.kiwibiker.co.nz/forums/a...p?albumid=5103
But i had never seen a pic of the Yamaha single only a drawing of the V4

[ken seeber]

The Boeing 787 has about 500 kilometers of wiring.

Good point Hooser, they('ll) both fly...

[Frits Overmars]

The Boeing 787 has about 500 kilometers of wiring.

Whatever makes you happy. Me, I don't particularly care for this kind of electrickery. It's not KISS.

[lohring]

If you think that's bad, take a look at an all electric drive model boat. Some of these wires carry 500+ amps while accelerating to 285+ KPH.

Lohring Miller
PS Some of the wires goe to test equipment.

[katinas]

This man looks happier

[katinas]

And really happy guys. Riga 23S 125cc two cylinder rotary after more than 30 years.
https://www.youtube.com/watch?v=VP1KY1mBlDs

[husaberg]

And really happy guys. Riga 23S 125cc two cylinder rotary after more than 30 years.
https://www.youtube.com/watch?v=VP1KY1mBlDs

More a can of angry wasps getting shaken up rather than ripping calico.

[Flettner]

Neil, is this a TPI version 2 prototype, with 4 injectors ?

Watch out for Austrian 'observators' in you neighborhood

I held off, having offered it to TM, thought they might be intetested, put the middle finger up KTM, but in the end no.
So bugger it, on the internet, free to a good home, whom ever wants it.
Im down to a single page of 'things to finish' then I'm off riding it, thats me being super optimistic.
I'm real keen to get into my 175 version but far too many things to finish off before that.
That would be the twin exhaust, open all hours crank case / rotary valve, four injector, balance shaft, special piston, pull start engine. YZ 250 X gearbox.

Time and money.

Allegedly I'm still owed a TM 125 TPI, January now. I'll have that engine out quick smart and replace it with what TM should have done.

[Pursang]

You can lead a horse to water.....

(but some won't drink until they're drowning ... and then it's usually far too late!)

Great work Neil..

Cheers, Daryl.

[jbiplane]

My list of 28-44mm throttle bodies and TPS to use for fuel injection. May be useful for somebody

[TZ350]

.
That's great, very helpful. Thanks.

[katinas]

https://www.mcnews.com.au/1987-honda...wayne-gardner/