ESE's works engine tuner

[wobbly]

The pitting on the ring bottom face is due to this being the hottest area in the engine - where all the heat from the crown is tranferrred from the piston into the bore via the ring.
Thus formation of the free radicals always starts at this hard connection between the two faces.
A " normal " ring bottom face is bright and shinny, due to it being pushed back and forth into the Exhaust port.
Any pitting on this face is whats called " power deto " and is the outer limit, just before the piston starts being attacked and the EGT begins dropping.
Before I came up with the connection between deto and EGT drop, a few clever tuners learned to look for this ring pitting, as an indication they were on the limit.
Ripping the cylinder off continually is a pain, simply reading the EGT data logging is super easy and always reliable.

[Wos]

Nice video. But do your rider a favor and equip him with an analog rev counter.
Trying to keep the needle pointing upward is much less distracting than trying to read digits off a digital display.

Dear Frits, Dear 2t addicteds

searching such a analog rpm Counter.
We need one for changing between many diffrent Enduros crossers to get idea in driving tests where reso dip, peak_rpm and so on is.

Are there small analog counters with internal battery, analog needle or lcd bar that simply have signal clamp over the ignition cable, like cain saw counters or strobo lights often have?

Range should be up to 15000...16000 rpm for other projects like 50cc liedolsheim 8H.

Thanks to All!

Grüße Wolfgang

[Frits Overmars]

Dear Frits, Dear 2t addicteds
searching such a analog rpm Counter. We need one for changing between many diffrent Enduros crossers to get idea in driving tests where reso dip, peak_rpm and so on is.
Are there small analog counters with internal battery, analog needle or lcd bar that simply have signal clamp over the ignition cable, like cain saw counters or strobo lights often have?
Range should be up to 15000...16000 rpm for other projects like 50cc liedolsheim 8H.

Martijn Stehouwer at https://emot.nl will be able to help you Wolfgang.

[Wos]

Martijn Stehouwer at https://emot.nl will be able to help you Wolfgang.

Thank you Frits,

Fine... a needle gauge is unbeatable if the damping fits to rising of rpm.

While my searching found a divice for spark wire clamping that sends by Bluetooth to Smartphone a signal and Smartphone shows rpm...

In the Moment only digits displayed

But whoo knows...talked to manufakturer...maybe they add needle or bar rpm to app

Grüße Wolfgang

https://sparkevo.racing/shop/rpm-dot/

[Vannik]

[Peljhan]

Nice video. But do your rider a favor and equip him with an analog rev counter.
Trying to keep the needle pointing upward is much less distracting than trying to read digits off a digital display.

Yes, I agree, but budget was over the limit anyway and he did not choose some krober analog tacho that would fit nicely. Maybe in the future.
Year previous, he was riding my D6 with only 14hp and very peaky engine, so this bike was much easier to ride with about three times wider power band and 18hp. You can see, he does not shine with catching correct gear out of corner and this bike is forgiving if you keep it in one gear lower than optimal.
Also, you see I mounted my 25 years old tacho on the bottom as upper one is chineese replica and does not work well. Anyone knows why? I need to try more windings around spark plug cable.

Re: Flettner: He had no problems regarding belt wear. I think he changed it after about 4 track days just out of prevention. But never snaped it or something like that.

[Wos]

Hi wobbly!

My fellow and i have a project youngtimer enduro tm 80 from early 90ties

Yesterday tried to figger out where Powervalve starts to open by a Video of rotating pv shaft and rpm conter beside

Rev counter to slow

Do you have insider information to the rpm start opening / rpm full open? Tec specs standards?

Yes there is a spring to influenze but i think its a original one

Reason for our search...to built a ignition timing curve that fits better than motoplat... not easy without knowing the start of changing exhaust timing from very low 175 high dynamic compression to 192 when fully open etc.

the tm 80 is used in German National enduro classic Championship

Thanks a lot wob!

Grüße Wolfgang