ESE's works engine tuner

[RAW]

Maybe Vrouw Overmars carried out her threat ! (but we all get those threats don't we )

Yeh thats rite, good luck to him ( Frits & partner ) hope your enjoying yourself, I'm sure he is trying to sneak a peek at the forum world given half a chance

Just think of the hundreds of forum questions about the world he now has a chance to answer, this is the first time I don't wish to be in your shoes Frits.

[Haufen]

She must have found his spare laptop, let's hope he is allright

Jokes aside, enjoy your holiday, Frits!

[husaberg]

Cool.. but why not just build a pipe like rodeltrack from carb to inlet tract?
It lets almost all fuel that falls out to be sucked in into the engine, then you can tune the plenum pulse with different opening at top of the 'tube'.

it dampens out the pulses and letting the carb work with more even flow but still almost all fuel into engine.
More easily to tune.

Rgds
Patrick

Is this what you mean by rodeltrack.... A spiral?
or
kind of Ricardo?


I mentioned a while beck thet i guess the reason for dropping the Plenum original was the fuel dropout.
I said something like a balloon or bike tube to vary the volume here is a patent for something similar.
http://www.google.com/patents?id=TVy...page&q&f=false

[2T Institute]

She must have found his spare laptop, let's hope he is allright

Jokes aside, enjoy your holiday, Frits!

classic

[dtenney]

Mr. Bucket racer:

Where does one find the measuring device you showed us...that is really cool. I have broken a lot of burrette tips over the years! I tried to Google search for it but was not successful.

David

[dinamik2t]

Mr. Bucket racer:

Where does one find the measuring device you showed us...that is really cool. I have broken a lot of burrette tips over the years! I tried to Google search for it but was not successful.

David

Not sure if you aren't aware of it, but google has the "image search" feature. It's a super great tool; perhaps you could search the photo itself!
- or perhaps bucketracer can tell you directly

[Brian d marge]

Again not sure if this is any help to anyone , clearing out old docs , this is about the Ducati trellis frame

Stephen

[TZ350]

Where does one find the measuring device you showed us...that is really cool. I have broken a lot of burrette tips over the years! I tried to Google search for it but was not successful.David

Hi David those all in one burettes that Buckets talked about are proper laboratory grade burettes and should be available from any scientific glassware outlet.



They have a normal glass style burette and a plastic bottle which you fill with reagent then squeeze up into the burette. The burette has an air break at the top so when the excess reagent sucks back into the plastic bottle the burette is left accurately primed to the zero mark.

There is an easily operated tap for course and fine dropping of the reagent and a flexible tip on the burette. The glass is still breakable but these all in ones are easer to handle, sit on the bench nicely and way more convenient than conventional burettes.

They are definatly the Bees Knees but maybe a bit OTT for CCing heads and for every day work I use cheap plastic syringes.

A Burette typicaly has 0.05CC graduations, a cheap 10ml (CC) plastic syringe has 0.5CC graduations and a 5ml 0.2 graduations.

[TZ350]

Thanks to Kels efforts, re cycled the old plenum chamber, and we now have a nifty way to protect the carb in the event of a crash and a way of catching any fuel spit or spills.



We are looking forward to round 2 tommorow.

[SwePatrick]

Is this what you mean by rodeltrack.... A spiral?
or
kind of Ricardo?


I mentioned a while beck thet i guess the reason for dropping the Plenum original was the fuel dropout.
I said something like a balloon or bike tube to vary the volume here is a patent for something similar.
http://www.google.com/patents?id=TVy...page&q&f=false

Actually i meant exacly like an bobsleightrack.
what is it called? Velodrome curves?

[SwePatrick]

Some might be interested, I was away to dyno my MB5 build.
Had serious problems with fuel.
The carburator is aligned in a very rough angle, and the dyno added angle to the chassi, the rear tire was way higher than front tire.
So it flooded so hard that it just squirted like a firehose from the carb out of the ventilation, so the fuelhousing went empty and engine died off.
Wich is clarly visible in dynosheet.



The result 21,43hp at rear tire @8600rpm.
And the problems starts already at 7500rpm, therefor the curve is flattening out.
and at 8600rpm it just died for us.

The engine is tuned for WAY higher rpm than this, the engine dies kind of exacly when pipe is starting to 'suck'.

And an Keihin FCR40 might be the solution as i want to keep the hard angle.(straight down into crankcase)

And, when coming home i tested the bike,, well,, no problemos at all.
The bike runs HARD!

Rgds
Patrick

[speedpro]

21hp @ 8600rpm from a 50cc engine??

That sounds like staggering bmep

[jasonu]

21hp @ 8600rpm from a 50cc engine??

That sounds like staggering bmep

I'd like to see a vid of the dyno runs...

[husaberg]

Hello guys..

I just have to say, a really really interesting thread.
took me 2 weeks to read it.(on sparetime at work)
And when i´m saying interesting i mean INTERESTING!!!!

Still taking i glimpse here and there to see if it has been updated.

I´m building a 'overkill' Honda MB5 here in Sweden and got much much good info here.

A preview pic:

Not complete at all on the pic,, but in progress.

Yes.. ~ 20hp is good..
But i reckon i will double that atleast.

My 88cc machine got 5disc clutch with uprated springs, it slips from time to time.
And in dragracing the dog in the gearbox are living an hard life.
any defects and the shiftforks takes the beating and snaps.
My 88cc machine is in the area around 20hp at the wheel.



that´s a pic of my 88cc hybrid.
from the beginning a watercooled cylinder, shaved off the waterjacket and replaced it with cooling fins like an std MT5 cylinder.

Quick spec 88cc:
CR80 crank
NSR50 gearbox
5disc clutch
PVL ignition
Mikuni TM28ss bored out to 30.8mm
V-force reeds
Modified Suzuki RM85 -04 exhaust.(to raise the rpm level, not perfect i know but the moped runs hard)
Wiseco piston

PICS: 88cc


My 136cc project is an 'hybrid' that too.
I have built an clutchcase that gives room for 8discs.

Hello..

this bike isn´t for GP racing.. it´s for dragracing and topspeed events in Sweden for 'Mopeds'
It´s an old Kawasaki KX125 cylinder either -86 or -87.
I have bored it up to 58mm and with 49.5mm stroke(MT8 crank) it is now 136cc

A quick spec:

Kawasaki cylinder 58mm bore with woessnerpiston, new nicasil
'torus' combustionchamber 13-1 in ratio
V-force reeds
two carbs one 36mm and one 40mm(Mikuni TM/TMX)
Samarin CR125 rod, to get 1mm bigger wristpin and a little bit longer to fit better in cylinder, std is ~100mm now it´s 105mm, and finally bigger big end bearing.
Calculated exhaust(in progress right now)
6spd gearbox
Cylinder and exhaust tuned to get peak hp at ~12000rpm and ~1000rpm 'overrev'.

will build two models of clutch, one 8pcs and one 'slipclutch' with centrifugal weights.

the moped itself is an strengthened MB5 with uprated suspensions.
then lengthened and lowered to get some kind of good highspeed behaviour.

Rgds.
Patrick

21hp @ 8600rpm from a 50cc engine??

That sounds like staggering bmep

Mmmm.............

[wobbly]

21 Bar - bmep = 21 Hp at 8500 in a 50cc, and you are going to double that, yea right.
When you do it we will send you a container of chocolate fish, and as always i offer several free blowjobs in humble recognition.