ESE's works engine tuner

[wobbly]

Here is the entry list for the first big race of the year in Europe with all the new homologations allowed..
No Rygers listed.
I only found this as a young guy ( Armstrong ) I helped here in NZ now has a factory drive for TonyKart.

http://tkart.it/en/editor/pex-corre-con-motore-vortex/

[Muciek]

I got my hands on 1985 or 86 KX250 cylinder and main ehx (bridged) port floor is raised 4mm (stroke is 65mm and floor is on 61) transfers starts on 65, but it looks like they dropped that idea later. Wobbly I have bought servo from R1 but I don't have original connector could You tell me what is the pinout?

[wobbly]

Yep, the top 3 are the servo position pins.
Lh = sensor earth, mid = sevo position out, Rh= +5V.
The pot does fail eventually, even in these newish R1 servo's.
So check you have 5-7K ohms on the outer 2 pins, and that the resistance varies between the middle and one end
as you wind the cable wheel back and forth with vice grips.

Lower pair are the servo motor power from ecu.
Run a 3 pin and a 2 pin plug for each, back to the ecu so you can program it easily.

[TZ350]

Making progress with the Beast. Michael from Morgan Engineering has been helping me with a seat frame for the Beast, Basically a NSR250 with the old EFI air cooled Suzuki GP125 engine.

There is a 110cc water cooled engine pretty much ready for it. But because I have good dyno graphs for the air cooler I wanted to test it again with the dry sump idea to see what power difference there is between a wet and dry sump if any before I fit the water cooler.

[jasonu]

Making progress with the Beast. Michael from Morgan Engineering has been helping me with a seat frame for the Beast, Basically a NSR250 with the old EFI air cooled Suzuki GP125 engine.

There is a 110cc water cooled engine pretty much ready for it. But because I have good dyno graphs for the air cooler I wanted to test it again with the dry sump idea to see what power difference there is, if any with a wet sump before I fit the water cooler.

I see your welder has his safety singlet on...

[wobbly]

My legs dont work at all,so to see someone use a "foot" control using his knee absolutely fucks me off.
Black singlets have an extended aura that prevents UVA, from affecting locally uncovered skin, so thats just fine.

[dark art]

I wanted to test it again with the dry sump idea to see what power difference there is, if any with a dry sump before I fit the water cooler.

I have though about it some time ago and the electric oil pump, that some people use on muscle cars, seem a good candidate to a relatively fast test of the dry sump.

I had bought a second hand bike wich the previous owner fill the gearbox to the very top, with oil.
The bike hardly pulled third gear on the street. After take the oil to indicate level, on the same road pulled 4 and 5th gear no problem, so it might make a very valuable difference...

[Grumph]

I see your welder has his safety singlet on...

My legs dont work at all,so to see someone use a "foot" control using his knee absolutely fucks me off.
Black singlets have an extended aura that prevents UVA, from affecting locally uncovered skin, so thats just fine.

Did neither of you notice the Samoan safety boots ?

He obviously had to use the floor as the bench is occupied with more important stuff - Heineken..

Rob, no offence, I'm sure his work is good.

[Tim Ey]

I got my hands on 1985 or 86 KX250 cylinder and main ehx (bridged) port floor is raised 4mm (stroke is 65mm and floor is on 61) transfers starts on 65, but it looks like they dropped that idea later. Wobbly I have bought servo from R1 but I don't have original connector could You tell me what is the pinout?

Is this the fastest Servo available? I got one Yamaha YPVS Servo and it is as fast as a slug...

[ief]

same thing.

[TZ350]

Did neither of you notice the Samoan safety boots ?

He obviously had to use the floor as the bench is occupied with more important stuff - Heineken..

Rob, no offence, I'm sure his work is good.

True, no shortage of the important stuff ... and it was good welding workmanship alright too.

[marsheng]

Results of an centrifugal power valve test.

Actuation mechanism mounted on a router with a variac controlling the speed. .

Run 1 Standard - No load ie not operating valves

Starts to open 7800 and fully open at 8300 - 500 RPM range
Only closes at 6500.
Hysteresis 1800 RPM

Run 2 Added 3 mm spacer onto the spring
opens 9000 and fully open 9200 - 200 RPM range
Closes 6600
Hysteresis 2600 RPM

Run 3 Used 6.35 mm balls instead of 8 mm
opens 10300 and fully open 11500 - 1200 RPM range
Closes 8300
Hysteresis 3200 RPM

Run 4 Used 6.35 mm balls and reduced preload on spring by 2 mm
opens 9000 and fully open 10200 - 1200 RPM range
Closes 7700-6700
Hysteresis 2500 RPM

I tried 3 balls and it was similar to Run 2

Run 4 seems the one to try.

Still the best option is and Ingitech and an Exup servo. (Is this Pre 89 ??)


Cheers Wallace

[Larry Wiechman]

Making progress with the Beast. Michael from Morgan Engineering has been helping me with a seat frame for the Beast, Basically a NSR250 with the old EFI air cooled Suzuki GP125 engine.

You can TIG weld in hot weather and not get the added bonus of skin cancer by using a sun block lotion that has a high SPF rating. (40+)

Heineken is only SPF 5.

[wobbly]

The R1 servo is exactly the same internally as the old YPVS models, only difference is the later version has the plug molded
into the body, and most of those old servos are well past it now.
The R1 unit is plenty fast enough for any 2T acceleration rate.
If its "slow " its faulty, or the power supply cant deliver sufficient current.
As the load from the PV goes up, the servo tries to "catch up " due to the error correcting feedback circuit, and to do so it pulls more current thru the motor.
I did a test years ago on the Dynojet 160 I use,and in a kart with a 125 TM MX engine making 50 Hp we videoed the two dyno screens
during a run.
One screen has the Dynojet real time info, the other screen has the Ignitech software running in real time as well.
In first gear we did multiple pulls from under 6,000 to 13,000,and played back the video ( yes an old VHS ) and watched the servo
position cursor change with the rpm.
It was spot on the money.
This was using a cable wheel on the PV that gave a ratio of nearly 2:1 revs of the servo
Nothing accelerates as fast as a 50 Hp kart in first gear on the dyno, so as long as the servo is mechanically and electrically sweet it will do for any engine.
I have used it on a FPE 250 Superkart engine on the same dyno with no issue of servo/PV lag

[marsheng]

Thanks for the info. I see if the owner of the bike wants to go down this route. Look like a really interesting exercise.