My s1r9a9m9 replication!

[Super God]

THIS TOPIC HAS OVER NINE THOUSAAAAAAAAAAND VIEWS!!!!
Wow

How hard is it to change the keys on a small tecumseh engine?  I thought it involved welding or cutting off the original key.  It seemed hard to me.  Maybe I'm mistaken?

[capacitor70]

I got the cap discharging when it hits about 280V it jumps back I have been playing with the freq and the freq on
the flyback in was abou 5Khz this produces nice plasma spark but the cap does not discharge if i take this down
to 100 - 300 hz the cap discharges.

Do not use high frequency for flyback, engine gives pulse to ingnition coil acording to its RPM,
If waste spark system is used then Frequency of ignition coil is equal to the RPM of engine, if no waste spark then it is half of RPM.
It will not go more than 6KHz. for idal speed it is below 300Hz

[provelless]

How hard is it to change the keys on a small tecumseh engine?  I thought it involved welding or cutting off the original key.  It seemed hard to me.  Maybe I'm mistaken?

SG, they do make off-set keyways but they will only change timing a few degrees. I get the impression you guys are going to take a big swing at moving timing and you will need to remove the key altogether. Keep in mind that moving timing just a little on a gas engine affects it alot, meaning it might not start and/or yank the crank rope out of your hand, not sure if this plasma deal will be as tedious. If we knew roughly where piston needed to be in relationship with firing we could use a degree wheel and zero in the correct timing.

   To answer your question, take off nut or crank assembly from engine (flywheel). Take a punch and hammer and whack the center of the crankshank, as if your trying to drive the crank through the flywheel. This may take two or three hits but nine times out of ten the flywheel will pop loose, if it doesn't you may need a puller though I\ve never had to use one. The key will be stuck on either the flywheel or crank, take your punch and tap it off and your done.

[Super God]

About 30 - 40 degrees after top dead centre should be an ideal timing setting for a water explosion system like this.  35 degrees atdc should get it firing up smoothly although you should still get a response from the engine of some kind at the default timing setting.  Hell, Paul got his to almost idle without changing timing I believe.  All he used is an MSD-7, bigger injectors, and more fuel rail pressure (80 psi).  This was on a car with all the computer crap (1991 Mitsubishi Eclipse).

[capacitor70]

Starter motor,
I tried to use my drill machine as starter motor, but it rotates in opposite direction, I swapped brushes to change direction it worked, but brushes become very hot and creating more arc. torque is reduced in opposite direction. I think it is not safe for drill machine.