ESE's works engine tuner

[Michael Moore]

I think the Konig and Fath engines predate both of those.





cheers,
Michael

[wobbly]

I knew about both the Konig and Helmuts ( my hero ) engines but both used what I think is the mickey mouse
drive solution - a belt twisted and running around like a mad woman's shit.
The Rotax/Thiel implementation with an internal gear drive for the valve is much more elegant - better, who knows.

[DoldGuy]

The transmission discussed is an override transmission (Google it). It allows up shifts with no clutch or ignition cut/kill...the bad about these, if you reduce the throttle ANY it will bend shift forks and sometimes take out the gears/cases.

Swedepatrick, I have one of these transmissions for the KX250, if interested will post pictures.


I have single cylinder Drag Bikes & personally like/prefer the Air Shifter setup and feel it is much better than any of these transmissions.

Currently working on another motor & will have lots of questions for you guys

DoldGuy

[TZ350]

Currently working on another motor & will have lots of questions for you guys

We would love to see pictures and posts about your progress too, its a trade off.

[peewee]

We would love to see pictures and posts about your progress too, its a trade off.

its easier to just lurk nearly annonomously and copy everyone elses ideas .

[WilDun]

I dunno MT. For quite some time when typing a post, the thing times out and I have lost everything. This can give you the shits. So now, I write my posts in Word, then copy and post into KB. If I am putting in pics, I do that first then do the paste. Maybe I am a slow typist, but haven’t seem to have had any problems elsewhere.
Still, it could easily be operator error.

I had the same problem so I typed it all out, edited it and got it right, then copied it, reopened the reply box from the thread and pasted it in that ...... it works!

Update, - yes MT, it possibly is a virus or something on my computer, so I've been scanning and scanning with Malwarebytes - that usually cures problems eventually - and it has! ( but I never had any problems elsewhere though!).

Back to gearboxes.

[Grumph]

Or back to elegant rotary valve drives...

Rotax had some previous experience prior to the Sea-Doo and the RSA. This would have made a nice production racer engine IMO.

For MT's info, this wouldn't load this PM but does now....

Edit - can someone more familiar with krobers tell which direction the engine rotates please.

[Frits Overmars]

I knew about both the Konig and Helmuts ( my hero ) engines but both used what I think is the mickey mouse drive solution - a belt twisted and running around like a mad woman's shit.
The Rotax/Thiel implementation with an internal gear drive for the valve is much more elegant - better, who knows.

I've got joyful news for you Wob. Your hero did not make the mistake of twisting that belt. Both Helmut Fath and Egbert Streuer kept their belts in one plane and made the 90° transition with bevel gears. Running around: yes, but that would be just about inevitable with two disks on Streuers Stredor ( pictures below) and no less than four (stacked two by two, contra-rotating) on Faths engine; see the picture above.


The Rotax/Thiel implementation is more elegant, but adjusting the gears on the RSA is a real pain. Today Jan Thiel wouldn't build it like this any more.

[husaberg]

The Rotax/Thiel implementation is more elegant, but adjusting the gears on the RSA is a real pain. Today Jan Thiel wouldn't build it like this any more.

I remember Jan saying he would do a dual disc (one either side)
A couple of quick questions, that i will apologise for in advance, as they might require much longer explanations.
Is it fair to say the RSA breathing improvements with its rear disc did not meet the Jan’s initial expectations for the expected improvement over the single side disc?
Also I recall something about the RSA250 rotation direction being reversed, compared to the RSV250. what were the reasons this was done?

[TZ350]

Well my fuel injection project was starting to go well so I was not surprised when the Beast found another way to annoy me.

It had became troublesome changing gears and eventually locked in first gear. Thinking the gear indent pawl may have jammed the selector drum I took the indent plug out and out fell a tooth that had broken from a gear. I expect there is more rubble inside the box.

But there is an up side, having to take the motor out is just the excuse I need to replace the standard cylinder with a hotted up one. ....

[guyhockley]

Exactweld did a dual disc, Puch did a disc/reed combination. Has anyone other than Helmut Fath used same side, contra-rotating discs?

[F5 Dave]

TZ your spaced crankcase obviously need some fettling. If you have spare junk cases you can cut big sections out to observe correct operation which is hard with cluster in just one side. The engagement on the broken gear would be the place to start but several others may need reshimming or maybe just observe if there is free float on shafts to start with.

[Magnus676]

Well,it's a pleasure learning from you guys!
In drag racing we use sleeves intead of nicasil coating,and the piston to cylinder clearence is a little more than road racing or kart engines.
I assume with methanol I'll have to further increase clearence because of the higher comp and advance,and to shorten a little bit the pipe(?)
I think I'll shoot for the safe solution,little less horsepower but for longer with the the long and forgiving power band-power range.

[TZ350]

Thanks F5. Good idea. There was a set of cut up cases I will see if I can find them.

[husaberg]

Well my fuel injection project was starting to go well so I was not surprised when the Beast found another way to annoy me.

It had became troublesome changing gears and eventually locked in first gear. Thinking the gear indent pawl may have jammed the selector drum I took the indent plug out and out fell a tooth that had broken from a gear. I expect there is more rubble inside the box.

But there is an up side, having to take the motor out is just the excuse I need to replace the standard cylinder with a hotted up one. ....

Wasn't team ESE going to use a presure feed oilied gearbox?
Did you stick with splash?