ESE's works engine tuner

[Drew]

The pipe probably helps govern the revs too, I think microlights use the pipe to cap the rpm as well

You can do that without killing or maiming the power output?

[FastFred]

The pipe probably helps govern the revs too, I think microlights use the pipe to cap the rpm as well

True, but would it account for the carbon in the transfer ports on the chainsaw cylinder .

I think that blow down is used to limit the max full throttle no load rpm seen by a chainsaw, lawn mower, concrete cutter, weed eater etc.

Where as the Microlight engine is under load all the time its spinning the prop and at WOT finds its happy place on the torque curve as defined by the pipe and that could be a place where blow down is totally adequate and there is no blow back down the transfers.

2-strokes, so simple, and yet so complicated.

[TZ350]

l was thinking about putting a 24mm carb on my brothers rs125 just to see what it could put out

I would be very interested in seeing the result...

[TZ350]

I have just received another Knock Gauge, this one has two extra outputs. http://www.knockgauge.eu/content/blogcategory/22/41/

YouTube links showing the Knock Gauge in action.

The two green lights, the orange warning light then you see the red det light. http://youtu.be/aZkZR-JBr_E and http://youtu.be/vFoZyw_sHmA

Like last time, one that goes to ground for signaling the IgniTec to retard and a new one that pulses from 0V to +5V each time the Knock Gauge sees a detonation event.

The Curtis event counter can then count the detonations. Now I have the makings of a det sensor, ignition retarder and det counter.

Attachment 269009


703TR002N-512D RS part number 183-5952 $63.50 ... 5-12V and less than 10mA so easily self powered and at 500Hz fast enough to count all deto events as seen by the Knock Gauge or similar, as 200Hz in a 2-Stroke equals 12,000 rpm.

Attachment 269008

This post links back to various cheap counters that could be used with the Knock Gauge.

[richban]

I have just received another Knock Gauge, this one has two extra outputs. http://www.knockgauge.eu/content/blogcategory/22/41/

Like last time, one that goes to ground for signaling the IgniTec to retard and a new one that pulses from 0V to +5V each time the Knock Gauge sees a detonation event.

The Curtis event counter can then count the detonations. Now I have the makings of a det sensor, ignition retarder and det counter.



This post links back to various cheap counters that could be used with the Knock Gauge.

If I can get a laptop to talk to my ignitech proper I will have a go at setting the ignition with the amped up earphones on the dyno. The computer I was playing with just kept wanting to install stuff. Hate windows. I have a Mac. or 2. Will let you know how I go Rob. Hp might remain a rumor for a while.

[TZ350]

If I can get a laptop to talk to my ignitech proper I will have a go at setting the ignition with the amped up earphones on the dyno.

I will be interested to see how you get on, with mine, all I could hear was noise, maybe I had something wrong.

I also had a lot of trouble with my computer freezing up when it was talking with the IgniTec on the Dyno, a 5K resistor plug cap cured that.

[richban]

I will be interested to see how you get on, with mine, all I could hear was noise, maybe I had something wrong.

I also had a lot of trouble with my computer freezing up when it was talking with the IgniTec on the Dyno, a 5K resistor plug cap cured that.

I did quite clearly hear the knock with Andrews phones last time. It was a manifold leak.

[TZ350]

I must have something wrong on mine, the pickup maybe. I will have another look at it.



This is a USB to Serial converter I used with the IgniTec, it seems to work OK.

[richban]

This is a USB to Serial converter I used with the IgniTec, it seems to work OK.

The computer see's that there is a serial device there but try's to go looking for software to install the device as fas as I can figure. So the USB connection is working I spoz. Last time I just plugged it in and it worked. But that was with a serial cable. Different computer. So maybe I do need to install something.

[richban]

I must have something wrong on mine, the pickup maybe. I will have another look at it.

Maybe just have the bike running hi idle have a listen then undo the manifold clip and start to pull the carb off. Should hear it knock as it leans with all the extra Air. I think.

[TZ350]

The computer see's that there is a serial device there but try's to go looking for software to install the device as fas as I can figure.

Software that I had to install came with my USB/Serial cable.

[Yow Ling]

Making progress on my dyno, would have done more but after getting the big wheels out of the car boot Im rooted !

l

[TZ350]

That looks like the makings of a pretty decent inertia dyno. Is the disk break for slowing it down after a pull or going to be for holding a load on the motor?

[Yow Ling]

That looks like the makings of a pretty decent inertia dyno. Is the disk break for slowing it down after a pull or going to be for holding a load on the motor?

could be both, havnt got a caliper yet, the disk is off a v8 commodore. I havnt got much experience with dynos yet other than a few quick runs and one session at the Ashvegas dyno. hope to have the drum finished and mounted this weekend

[Sketchy_Racer]

Speaking of dyno's, Kyle and I have almost finished our inertia dyno too, did all the machining last weekend and got the frame together this arvo.

What software you looking at running Yow?