Ke125

[F5 Dave]

Wasn't it you that bolted the muffler stay to the swingarm?

Eh? no not me, never seen that one. RG50 ones were easy as the footpeg hanger mount was provided.

But if you want to sling some mud, I'll have to smear you by association & mention the Watercooled DS 80 with a water inlet but no outlet

[koba]

Rider aids are pretty gay.

[speedpro]

Rider aids are pretty gay.

. . . . . not in the spirit of bucket racing, ruining it for everyone else, chequebook racing yada yada yada etc etc.

[Pumba]

. . . . . not in the spirit of bucket racing, ruining it for everyone else, chequebook racing yada yada yada etc etc.

Ban them all I say. We are on the slippery slope to Traction Control and ABS. Thin end of the wedge

[koba]

Just standard launch control. Motor pins at selected revs, launch curve kicks in as clutch is released. At the moment it works off the push buttons on the left bar but needs the clutch switch ...

Does it need a wind up to charge it before you go?

[speedpro]

like CDI ignitions and transistor assisted ignitions. Where will it end? May as well get used to the idea I reckon. I remember getting a bit of grief when I "built" my first CDI which ran off the points on my AC50. Back in the good old days, before bucket racing got ruined.

[kel]

I need a clutch lever with a micro switch fitted to enable launch control

Got one, $10 off trademe. Even has a mounting for a rearview mirror


Koba, theres a map selection swtch, a couple of flashing lights and a rev counter as well. Unfortunately the only anodised bits were a couple of bolts and the fancy levers. I dont need the levers now, would look good on your old school bike though.

Mike who's racing your bike this year, whoever it is Im sure that they'd like the launch control interface. 2 strokes leading into the first corner just the way it should be!

[husaberg]

Got one, $10 off trademe. Even has a mounting for a rearview mirror

Cheque book racer. i borrowed mine out of a wreaked Subaru.
It was even kind enough to through in some led's and a couple of relays and some clips and a few HT bolts.
If i can be arsed i will show you the Works Kawa set up.
Use the mirror mount to locate your shift light assuming it isn't going in the heads up display in your helmet that is.

[kel]

assuming it isn;t going in the heads up display in your helmet that is.

Yeah bluetooth for the heads up, but we shouldn't mention that as it will just get him started all over again

[jasonu]

Eh? no not me, never seen that one. RG50 ones were easy as the footpeg hanger mount was provided.

But if you want to sling some mud, I'll have to smear you by association & mention the Watercooled DS 80 with a water inlet but no outlet

It did have both in and outlets. One in the head and the other in the cases at the stock locations so not sure what you were smokeing at that time.

[epsilonk]

Well I have to admit the motors output is everything I hoped for, and in all honesty what I expected.
The motor design was based on time angle area calculations. Time angle area sets the foundation for how well the motor will breathe and enables matching of port timings. Jennings proposed time angle area back in the early seventies (possibly earlier) but missed blowdown area. The concept of blowdown area was introduced by Blair, at least it was Blairs book "design and simulation of 2 stroke engines" that brought this to my attention. The first dyno run with the KERS was done with a reserved inlet timing in the hope of adding some midrange punch that would benefit kart track racing, it didnt! So I went back to the maths and set the timing to match the other ports. The calculations used for this motor suggested 32 crank hp at 11k, I assumed 15% loses which would be 27.2 rear wheel hp and we have 27.3 at 11.5k.
Of course its not as simple as just time angle area. We are incredibly fortunate with the internet age to have access to fantastic 2 stroke minds such as Jan Thiel, Frits Overmars, Wobbly, etc, etc and of course all the learnings of the ESE boys made available through the epic ESE thread. With the input and advice of these fantastic people it becomes possible for almost anyone to modify something as basic as a farm bike into a (modestly) high power 2 stroke motor. A dyno and an experienced operator helps too .
Big thanks to everyone that has helped both directly and indirectly to deliver this motor, especially TZ350 : Now to get it on to the track

Is this the ESE thread that you are referring to? http://www.kiwibiker.co.nz/forums/sh...?highlight=ese

I have an old 1981 KE125 that I would like to breath some life into...

[TZ350]

Is this the ESE thread that you are referring to? http://www.kiwibiker.co.nz/forums/sh...?highlight=ese

I have an old 1981 KE125 that I would like to breath some life into...

Yes thats the thread, maybe try starting around page 500.

[kel]

Well the bike finally made it to the track.
There was a problem in the part throttle settings which was making the bike a pain in the butt to start, after far too much pushing the bike around the pits I finally found a setting which allowed it to start and keep running, then the spark magically disappeared! Thankfully Max has some serious fault finding skills and before long we up and going again. Unfortunately the rain then came so more waiting. Finally I decided it was dry enough to try the bike on the track ...
Bloody hell I don’t know where to start, sure I was playing it up by sitting back in the seat but the power stands as the power came on out of the final turn were just too much fun, the crazy stopping power and the speed the bike turned into corners was incredible. I honestly couldn't stop grinning from ear to ear. Sure it still needs some dialling in but it's seriously cool and a mile ahead of the old FXR, I can't wait to race this thing!

[richban]

I honestly couldn't stop grinning from ear to ear. Sure it still needs some dialling in but it's seriously cool and a mile ahead of the old FXR, I can't wait to race this thing!

Good to hear. That's how I feel about my bike now. Well except for the power wheelies. Look forward to seeing some footage of you back on track. Don't forget to make it look pretty as well as go good.

[kel]

The bike survived its first race day and I survived my first day racing in 8 months.
Lots of minor issue as was expected, the battery going flat during the points races topping it off Bike felt good and I felt I was starting to get a feel for it.
So another meeting in 3 weeks. Need to sort the gearing, front forks, and get another battery, a dose of harden up for the rider and we just maybe able to get involved at the pointy end.
Think I might have caught the race bug again