ESE's works engine tuner

[Moooools]

And if I set the system up to run only one injector it will run well past the troublesome cross over point for two injectors so I think the map and pickup are not the problem.

What type of trigger wheel are you using?

It isn't just running so damn rough that it is kicking the RPM signal around is it? I have seen it before.

[TZ350]

What type of trigger wheel are you using?

Single pulse trigger, not a multi tooth with gap type trigger wheel.



I am using the stator plate and pickup (no charging coil) and the flywheel from a KX80

It isn't just running so damn rough that it is kicking the RPM signal around is it? I have seen it before.

Good thought, I will put the scope on it tommorow,

[Moooools]

Good thought, I will put the scope on it tommorow,

Can your scope give you an FFT of the pickup? (http://en.wikipedia.org/wiki/Fast_Fourier_transform)

That way you can see a single peak at the current RPM and if it moves the single peak will move up or down the X axis, but if it is randomly missing revolutions you will get several peaks.

Single pulse trigger, not a multi tooth with gap type trigger wheel.

Hmmmm. Depending on how much crank inertia you have that can prove problematic. If your tune is spot on then it can run very happily. But if it isn't any sudden accelerations and decelerations can't be accounted for, which can put your spark and injection timing way on the piss, which just makes it all worse.

[cotswold]

http://www.raceandstyle.fr/kit-overr...ter-nitro.html

[TerraRoot]

ECU's
surly the only thing two stoke about the ecotrons is the low ampage fuel pump? swap it for a microsquirt/megasquirt
on the other hand i can understand the urge to not lose to the bastarding thing, work damn you!

1200 for the link!

[husaberg]

ECU's
surly the only thing two stoke about the ecotrons is the low ampage fuel pump? swap it for a microsquirt/megasquirt
on the other hand i can understand the urge to not lose to the bastarding thing, work damn you!

1200 for the link!

The link is pretty flash bit of Kit, A much earlier version wasi what the Britten Ran Shhhhhhhhhhhh (forget i said that)


Few people would seen or heard of this i had just seen the odd reference.
I could have posted this in ESE or the chassis thread (might anyway).
Tell you the truth i wouldn't mind building a replica anyone got a Crescent 500 3 engine (lying about, they want to give away like)







This last pic i think is another version maybe?

[husaberg]

Some more Crescent engine pics 500cc 2 stroke 3.

[TZ350]

CVT http://www.raceandstyle.fr/kit-overr...ter-nitro.html

We now have a CVT project, watch this space later in the year.

[TZ350]

TZ400 http://www.youtube.com/watch?v=p8ZJC...HMXVSg&index=5

[TZ350]

Fuel Injected Suzuki 750



A very interesting collection of links to all sorts:- http://teamheronsuzuki.blogspot.nl/2...tam-rg500.html

[speedpro]

What about just using the smallest injector possible that will supply the fuel at max, only. At start and low throttle openings it will be rich even at minimum pulse width. Opening the throttle will admit more air but you don't have to programme increased fuel until conditions require it. I don't know when those conditions would be, it would depend on the injector and the engine. Typically carbs are set rich at the very bottom of the range and they work OK. The way I see it if you had to have more than 15% throttle to admit enough air to correct the mixture even at minimum pulse width it should be rideable. How often is a race motor used below say 50% of max revs with less than 15% throttle? I reckon it would "blip" fine and be raceable. We aren't talking about a road bike here where it must be sweet from idle to max.

[Frits Overmars]

What about just using the smallest injector possible that will supply the fuel at max, only.
At start and low throttle openings it will be rich drown even at minimum pulse width.

Fixed that for ye.

Typically carbs are set rich at the very bottom of the range and they work OK.

A carb 'set rich' doesn't necessarily mean a rich mixture. This is a fundamental difference between a carb and EFI.

We aren't talking about a road bike here where it must be sweet from idle to max.

Rideability is less critical on a race bike? You haven't done much drifting lately, have you?

[TZ350]

What about just using the smallest injector possible that will supply the fuel at max,

Yes, worth a try.

If all else fails I can try it on the Bemer I am customizing. Chambers and I have both got K100 basket cases that we are going to make into bober chopper cruisers complete with extended forks, low rider sprung seats, tassels, peanut tanks and fat rear tiers. The bikes will be striped down and all about the engine.

Probably offend the Euro Fundamentalists and State Side compressor riders all in one go ......



Not my bike, but don't you just love that engine.

Maybe I could have done a 2T like this high powered BSA Bantam with an RG500 based engine.

http://teamheronsuzuki.blogspot.nl/2013/12/bsa-bantam-rg500.html

With the Bemer I am aiming for something that's OK to ride slow so I do not loose my license (again) and great for cruising the cafes.

[mr bucketracer]

could allways use a carb until the end of the needle then inject the rest

[TZ350]

More progress, Matt has been in contact and asked for my latest recorded runs and photos of the scope traces for analysis. He expects to be able to get back to me Wednesday. In the mean time I will have a look at the quality of the trigger signal from the ignition pickup.