ESE's works engine tuner

[Flettner]

Why muck around with some other obscure engine, just make a new one. It's not that hard to do. Just make patterns and cast, that way you get just what you want and cheap too. TZ 350 don't modify your old head, bondie it up ( the old one ) and copy cast it with all the extra length for threads etc.

This is a copy cast of the original then remachined, original had no squish and two side plugs. This is a better design!!

[Flettner]

TZ 350, have you a dyno? Would it be able to run a 350 Kawasaki ?

[husaberg]

I guess you have seen this.
EGA 125

Built by Jan Eggens from Assen raced from 1980? to 1986
Best result = 12 place at the TT-Assen 1985.

TZ 350 don't modify your old head, bondie it up ( the old one ) and copy cast it with all the extra length for threads etc.

This is a copy cast of the original then remachined, original had no squish and two side plugs. This is a better design!!

And add a decent amount of radial fining.........

Then came the 1969 MZ 125 RE II (shown below). This bike features for the first time a tandem design, with two cylinders located in a front-to-back configuration. It was put into service in 1970 in the 125cc World Championship. Its greatest achievement was a third place at the Isle of Man TT, earned by factory rider Günter Bartusch. The following year, MZ withdrew from FIM World Championship 125cc class. The development cost of the highly specialized engines was too much for Walter Kaaden's budget to bear. He just could not get the funds he needed from the MZ board. The specifications are: two-cylinder two-stroke, 43mm x 43mm bore and stroke, 34 horsepower at 11,500 rpm, six-speed gearbox, and top speed of 128 mph.

[Flettner]

Why are the cylinders offset like this? sideways.

Husaburg, have you got your stuff now? Can I see it?

[husaberg]

Why are the cylinders offset like this? sideways.

Husaburg, have you got your stuff now? Can I see it?

Yes stuff is sorted and yes of course, i will take some pics today. (the camera is all sorted too i think?)

here is a preview.
It also looks like the local floundowndry is also better equipped than i initially assumed as well .

[cotswold]

It was my CDI, Tee Zee lent me one of his old ones and it now sounds great.

http://www.youtube.com/watch?v=PvAQAOSsLCc

[Frits Overmars]

Why are the cylinders offset like this? sideways.

Because the disk valves are overlapping, as in most tandemtwins. In the 250 cc Rotax that gave unequal inlet lengths; in the 125 cc EGA these lengths were equal.

[Yow Ling]

Yes and yes of course, i will take some pics today. (the camera is all sorted i think)

here is a preview.
It also looks like the local foundowndry is also better equipped than i initially assumed as well .

Looking pretty flash !

[Flettner]

My tandem rotary valves are offset only 2.5mm. There is a small slice of alloy that separates the two discs, they can't communicate. In this setup it was nessesary, one piston up one down but in a counter rotating unit it wouldn't matter if the valves communicated. So long as they don't touch.

[2T Institute]

Why muck around with some other obscure engine, just make a new one. It's not that hard to do. Just make patterns and cast

Just the "time poor" bit that cancels that out for me

[Flettner]

Lozza, finally got time to finish the drum for the YZ 250 EFI project. Had the CNC shell the component to 2mm thick.

[teriks]

Looks like a sophisticated version of a small R/C engine carb, minus the terrible fuel metering.

[TZ350]

Current Race Results Table in XLS format courtesy of Dave D

Buckets Feb-13.xls

and I have posted the results of the days racing in PDF format.

[2T Institute]

Bloody hell Neil that looks awesome. The shaft on either end looks to be interpolated out how were you holding it?

[jasonu]

Current Race Results Table in XLS format courtesy of Dave D

Buckets Feb-13.xls

and I have posted the results of the days racing in PDF format.

I see No Mates dnf'd AGAIN and after meeting him last Sunday I see where the nick name comes from. Good to put a couple of faces to names though. I made the comment to my wife that the average age of the riders at Mt Welli is a lot older than when I was involved. She pointed out that I fit in the very same age group...