ESE's works engine tuner

[F5 Dave]

Ah c'mon. Who's going to spend that sort of coin for just a chassis that would be, well a bit 'period'? Could buy an NX4 and throw away the engine if you're spending the money like that. Knew someone who was storing an old TD250 in his workshop covered in fibreglass dust in the 90s. Worth zilch back then. Might even got left there when he didn't pay the rent.

[speedpro]

I admire all the innovation and work that goes into 'buckets"

BUT ..................

Anyone who uses a TA125 as the basis for a bucket is a VANDAL"

Keep it original with its warts and other failings , and use it with the Classic club as a genuine 1972 GP bike in events for historic 125's with others of its kind.

Two days . . . a bit disappointing

[TZ350]

Tonight's effort. The Beast is starting to snarl and it will pull away in top gear on the dyno from 3500rpm and WOT, try that with your carburetor.



Red line is the best ever using a carb with this old cylinder and the Blue line is where I am at with fuel injection. In all fairness for a proper comparison it needs a proper head (the old head suited a dished piston) the original ignition map and chamber and a generator for the EFI. But I am pretty excited about the Ecotrons fuel injection system as its starting to be very easy to work with.

Anyway I am away for two weeks now so wont get another chance to make a head and fit a better chamber until early February. But I think this EFI business is going to work out OK.

[koba]

Blue line still smashes mine in the teeth, all the way though the range.

[koba]

Haven't had a chace to test yet, I hope like hell that it is concentric...

Oh, as a footnote; It wasn't.

[Flettner]

Tonight's effort. The Beast is starting to snarl and it will pull away in top gear on the dyno from 3500rpm and WOT, try that with your carburetor.



Red line is the best ever using a carb with this old cylinder and the Blue line is where I am at with fuel injection. In all fairness for a proper comparison it needs a proper head (the old head suited a dished piston) the original ignition map and chamber and a generator for the EFI. But I am pretty excited about the Ecotrons fuel injection system as its starting to be very easy to work with.

Anyway I am away for two weeks now so wont get another chance to make a head and fit a better chamber until early February. But I think this EFI business is going to work out OK.

Well, good on you, maybe that Ecotrons unit is trust worthy after all! You won't want to piss with carburetors ever again after this.
There is a number of people who have contacted me about twostroke EFI ( wanting a kit ) and I've been putting them off untill we see how the Ecotrons works. The Link is too expensive for most applications. You may have a few kits to make up by the looks of it.

[TZ350]

Well, good on you, maybe that Ecotrons unit is trust worthy after all!

Yes, inexperience with EFI but mostly, trying to work with a dud motor (my fault) held me up for ages.

You won't want to piss with carburetors ever again after this.

I already think carburetors are old hat, and no fun at all.

There is a number of people who have contacted me about twostroke EFI ( wanting a kit ) and I've been putting them off untill we see how the Ecotrons works.

When I have got the map sorted and the engine running well, I will post the maps and essential details. They wont be perfect for other 2T's but it will be a much better starting point than I had to work from.

[wobbly]

You guys are forgetting that in the vast majority of situations there is nothing wrong at all with a well tuned carb.
If you had spent 1/2 the time nailing the tuning of your bucket TeeZee as you have spent trying to get your head around the injection, there would be nothing wrong with it either.
If you look at the dyno run of the RZ400 it pulls full throttle from 4,000 rpm and has a perfect A/F readout to redline.
In reality though, who cares, if you are under 8000 on the track with an engine that spins to 12,000 you should be in the pits playing with yourself - or at least playing with the jetting.
Bartol added an injector to the KTM to fix the only issue a carb cant address, 15,000 rpm with the slide closed on the overun.
He could have used the added complication of the injector hardware and software, all the time - it simply wasnt needed.
BUT, I must add,I spent most of my adult life wishing I could organise a complete programmable and affordable ignition, that took 20 years, now everyone has one.
If you can manage to achieve a programmable and affordable injection system that will fit onto anything, then you will have easily surpassed my dream.

[Flettner]

You guys are forgetting that in the vast majority of situations there is nothing wrong at all with a well tuned carb.
If you had spent 1/2 the time nailing the tuning of your bucket TeeZee as you have spent trying to get your head around the injection, there would be nothing wrong with it either.
If you look at the dyno run of the RZ400 it pulls full throttle from 4,000 rpm and has a perfect A/F readout to redline.
In reality though, who cares, if you are under 8000 on the track with an engine that spins to 12,000 you should be in the pits playing with yourself - or at least playing with the jetting.
Bartol added an injector to the KTM to fix the only issue a carb cant address, 15,000 rpm with the slide closed on the overun.
He could have used the added complication of the injector hardware and software, all the time - it simply wasnt needed.
BUT, I must add,I spent most of my adult life wishing I could organise a complete programmable and affordable ignition, that took 20 years, now everyone has one.
If you can manage to achieve a programmable and affordable injection system that will fit onto anything, then you will have easily surpassed my dream.

Fair enough Wobbly, perhaps it's just I'm a crap carb tuner. But the usefulness of EFI goes way past just squirting fuel in, the ECU can do so much more. Monitor and adjust many things on the fly, stuff I never thought possible. Good on TZ for unfolding the edge of the envelope.

[speedpro]

Good on TZ for unfolding the edge of the envelope.

Papercuts sting like hell though.

On a 4-stroke note I reckon I'm on the edge of sorting my 125 twin injection.

[Yow Ling]

This should make the porting easier. Wirecut rgv cylinder

[TZ350]

If you had spent 1/2 the time nailing the tuning of your bucket TeeZee as you have spent trying to get your head around the injection, there would be nothing wrong with it either.

True, but then I would not have the shortest inlet tract possible and the tuning advantage that gives me.

[wax]

You guys are forgetting that in the vast majority of situations there is nothing wrong at all with a well tuned carb.
If you had spent 1/2 the time nailing the tuning of your bucket TeeZee as you have spent trying to get your head around the injection, there would be nothing wrong with it either.
If you look at the dyno run of the RZ400 it pulls full throttle from 4,000 rpm and has a perfect A/F readout to redline.
In reality though, who cares, if you are under 8000 on the track with an engine that spins to 12,000 you should be in the pits playing with yourself - or at least playing with the jetting.
Bartol added an injector to the KTM to fix the only issue a carb cant address, 15,000 rpm with the slide closed on the overun.
He could have used the added complication of the injector hardware and software, all the time - it simply wasnt needed.
BUT, I must add,I spent most of my adult life wishing I could organise a complete programmable and affordable ignition, that took 20 years, now everyone has one.
If you can manage to achieve a programmable and affordable injection system that will fit onto anything, then you will have easily surpassed my dream.

Is there a like button
A well set up carb is a good thing

[teriks]

In all fairness for a proper comparison it needs a proper head (the old head suited a dished piston) the original ignition map and chamber and a generator for the EFI.

True, but then I would not have the shortest inlet tract possible and the tuning advantage that gives me.

..and quite possibly reduced inlet timing to go with that shorter inlet tract, or increased crankcase volume or..
Good stuff!

[Frits Overmars]

Meanwhile in Italy: http://www.kartingconnect.com/fuel-i...prototype-now/