ESE's works engine tuner

[koba]

I've been using an old RS ignition Rotor but it had started to come loose, I peened the rivets over some more and it still came loose after a few runs.
Incredibly it was running OK despite several millimeters of float, seemed to line up when revving and knock around a lot when at low revs.

I pulled it apart and repaired it by welding up the ovaled holes.
I welded one each time on to a big chunk of brass, then allowed it to cool so it didn't damage the magent retention.

I had to machine it in the lathe to flatten and true it all up, I think maybe it distorted a little, not sure.
I'm an amatuer at this so it took ages.

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

[F5 Dave]

Oh well, if you've fixed it I'll want it back.

Kidding.

[koba]

Oh, also used oversize rivets, the welding was because there was not enough meat left in the rotor to hold it all together.
(Husa asked...)

[TZ350]

Getting happier, after looking at my recorded data, Ecotrons support sent me a new cal file based on their idea of what I needed and that was good enough to get me going.

After a little adjustment to the global fuel factor I was able to pull some runs where injector-1 crossed over to injector-2 without all the bucking and banging like before.

The Ecotrons system has a really good data logging application where you can select any of the systems measured or calculated variables and log them.



Purple line is the throttle fully open or closed, Green line RPM, Brown intake manifold pressure and Red is load air charge/fuel.



RPM and injector on-time.

Large Pink line is rpm, lower Blue line is injector-1 to 7,000 rpm and the small Red hoop lines are Injector-2 up to 12,000 rpm.

The Pink line is rich and looks a little jagged below 7k and between 7 and 12k it looks better but I think a little lean. It will be very helpful when I get the O2 sensor working.

I was starting to get despondent before, but now an affordable Bucket racing fuel injection system is looking possible.

The proof will be in whether I can tune the map and get the Beast running real sharp.

The hardest thing for me was finding a starting point, if it all works out ok on the dyno, I will post my maps and setup data for anyone else wanting to have a go with their 2T.

[speedpro]

Interesting how you can see the "rpm rate of increase" tail off just before it switches to the 2nd injector, and then the rpm rate of increase goes steep again. Either the later values for Injector1 need adjusting or the injector is topping out. If it's all good I wouldn't expect to see any change in the rate of increase other than that caused by engine configuration.

[TZ350]

Interesting how you can see the "rpm rate of increase" tail off just before it switches to the 2nd injector, and then the rpm rate of increase goes steep again. Either the later values for Injector1 need adjusting or the injector is topping out. If it's all good I wouldn't expect to see any change in the rate of increase other than that caused by engine configuration.

You are right, good point, and from the sound of the bike, it did seem to be way over rich there.

With it finaly swapping over injectors as planned, today felt like a great step foreword ......

Now I need to spend some time dialing it in.

[Haufen]

Congratulations! So what has been done to achieve the improved crossover from injector one to injector two?

With automobile ECUs, you can load two calibration files, and it can tell you exactly which parameters are different between the two. Can you do that with the ecotrons, too? I suppose it should be possible.

[husaberg]

You are right, good point, and from the sound of the bike, it did seem to be way over rich there.

With it finaly swapping over injectors as planned, today felt like a great step foreword ......

Now I need to spend some time dialing it in.

So it seems to be just an overlap issue? Wow that great news if that is all it is.......

[TZ350]

With automobile ECUs, you can load two calibration files, and it can tell you exactly which parameters are different between the two.

Yes you can do that with the Ecotrons system too, but I am not sure myself how its done.

Congratulations! So what has been done to achieve the improved crossover from injector one to injector two?

Thank you ... I had no idea where to start so it looks like it was pretty much a self inflicted problem and it was the Ecotrons support team that sorted it. After looking at the data I sent them they sent back a calibration file and map that got me started.

The map is very different, and I will try and compare the old and new calibration files to see if there are any "Subtle" differences in the control setup.



I like their hardware, it comes with its own wiring loom and is so easy to install.

For anyone wanting to try EFI on a small bike this is the Bees Knees for simplicity. The control algorithms appear to be every bit as professional as any top line EFI system.

And when Ecotrons develops their user software into something more friendly then this will be a very affordable and fun package.

I am looking forward to seeing how the other elements of the project, like the ball valve, boost bottle, chamber pressure valve and exhaust port dam work together with the EFI system.

[TZ350]

Interesting reading for racers of air coolers wanting to improve cooling through ducting/shrouding
http://naca.central.cranfield.ac.uk/...report-555.pdf - design principles for optimum cylinder shrouding/baffle, fin spacing, etc
http://x-jets.com/Design_for_optimum...efficiency.pdf - overview document with other interesting naca report references (type them into google)
Theres little that can be done to further cool the front of the cylinder (assuming its in free air) but shrouding can certainly aid in delivering an evenly cooled cylinder. The rear of air cooled motors get surprisingly hot, I found this out when I burnt my hand on the back edge of Robs cylinder head while we were testing on the dyno, it was hotter than the front/exhaust side!

Have seen a few different designs on line, not all of them make sense and even less conform to the NACA papers, this Vortex is probably the closest to what's required
Attachment 291783Attachment 291784

Thanks Kel, I will study the references ...

Interesting reading for racers of air coolers wanting to improve cooling through ducting/shrouding

I dont know why the links would not connect in your post so I found them and downloaded the pdf's.

Attachment 291843Attachment 291844Attachment 291845

[TZ350]

Few people would seen or heard of this i had just seen the odd reference.

Rudi Kurth and the Monark with the Cat van in the background.



And Dane Rowe was the swinger on Rudi Kurths sidecars in the 70's.

http://www.flickr.com/photos/teamher...7608302512322/



For those that remember her and wonder what she is up to these days, Danes big interest is Numismatics.



From Wiki:- Numismatics is the study or collection of currency, including coins, tokens, paper money, and related objects. While numismatists are often characterized as students or collectors of coins, the discipline also includes the broader study of money and other payment media used to resolve debts and the exchange of goods. Early money used by people is referred to as "Odd and Curious", but the use of other goods in barter exchange is excluded, even where used as a circulating currency (e.g., cigarettes in prison). The Kyrgyz people used horses as the principal currency unit and gave small change in lambskins;[1] the lambskins may be suitable for numismatic study, but the horse is not. Many objects have been used for centuries, such as cowry shells, precious metals, and gems.

Today, most transactions take place by a form of payment with either inherent, standardized, or credit value. Numismatic value may be used to refer to the value in excess of the monetary value conferred by law, which is known as the "collector value."

Economic and historical studies of money's use and development are an integral part of the numismatists' study of money's physical embodiment.



A Flicker collection of other women riding Fast bikes:- http://www.pinterest.com/derek200019...d-fast-chicks/

[speedpro]

Back a while, Tonto had a 125 Honda that got pretty hot. We made a small scoop that went down the side of the motor and directed air across the back fins of the cylinder via a shroud. No scientific evidence but it seemed to work.
As they say, There's nothing new in the world.

[kel]

Back a while, Tonto had a 125 Honda that got pretty hot. We made a small scoop that went down the side of the motor and directed air across the back fins of the cylinder via a shroud. As they say, There's nothing new in the world.

Speedpro, NACA paper 555 is older than we are!
Was Tonto's bike really a 125, I always thought he got a head start on the 150cc rule

[speedpro]

I really don't know what size his engine was. All I know was that he rode really well, check the photos. I bumped into him in Perth. His Mum lived up Waneroo way from my place and he started working some place North. He'd started bodybuilding and was a bit chunkier than the last time I saw him in NZ.

The photos were taken at Wiri container terminal in probably 1985 or '86. Acres and acres of virgin asphalt.

[cotswold]

From a different forum, A kit NSR500V cylinder