ESE's works engine tuner

[seymour14]

Looks like plenty of thrills and spills, thanks for taking the cool pics for us too far away to see it for ourselves.

I presume our 2t just did some promotional laps on the wet Saturday?

[TZ350]

I presume our 2t just did some promotional laps on the wet Saturday?

No, it ran on Sunday, went really well, I think it would have been a front runner in the 2 hour.

[SwePatrick]

First off all..thanks for this super thread, at page 700 now.. trying getting 70 hp out of our 125 cc

There are two rumours about the ryger around here:
It has reliability issues, seizing when revs cq power went up
They never put the thing on a test bench, the 70 hp is just an best calculated guess.

But rumours..( and all local karters are kicked off the ryger facebook site..probably talking too much :laugh )

Well,,, it all comes together if those rumars are the truth.
But, A guy of Frits´s caliber i would guess is very careful of guessing those numbers.
Either it´s true, or Frits like those smoke and mirrors

[breezy]

Has anybody tried to or have any thoughts about a pressurised air box fitted to the end of carb on a piston ported engine. if the pressure was constantly kept at a relatively high pressure would we be able to not have to close the inlet port with the piston and once the transfers open have flow for the whole of the transfer period? bit like tz 350 plenum box but with unrestricted inlet port?

[ken seeber]

Well,,, it all comes together if those rumars are the truth.
But, A guy of Frits´s caliber i would guess is very careful of guessing those numbers.
Either it´s true, or Frits like those smoke and mirrors

I’d be so pissed off if it was a dud. Think about it. Even if it was detuned from its 125cc/70 hp/30k claims to more utilitarian applications, it would bring about huge worldwide interest in 2 stroke engines, an interest that most of us here have and share.
It would offer an opportunity for many of us to utilize the technology or variants of it. 4 stroke conversions, 2 stroke conversions, kits etc.
Mind you, going into established competition applications there would be issues, just like the Ryger possibly gaining acceptance into current CIK KZ classes leaving all the other engines behind in its wake. All the TM, IAME, Lenzo etc companies wouldn’t even be happy.
The best thing it has done though, was to give many the challenge and inspiration to think outside the current “square” of the Aprilia RSA/RSW benchmark engine format.

[tjbw]

Has anybody tried to or have any thoughts about a pressurised air box fitted to the end of carb on a piston ported engine. if the pressure was constantly kept at a relatively high pressure would we be able to not have to close the inlet port with the piston and once the transfers open have flow for the whole of the transfer period? bit like tz 350 plenum box but with unrestricted inlet port?

Yes, I like the thought of a supercharger or turbocharger blowing air, but with direct fuel injection after exhaust port closes.

[MotleyCrue]

Turbo 2 strokes have been around for years in the aftermarket, but I don't seem to remember an OEM turbo 2 stroke (other than completely non-relevant to the discussion engines like big diesel 2 strokes).

[tjbw]

Turbo 2 strokes have been around for years in the aftermarket, but I don't seem to remember an OEM turbo 2 stroke (other than completely non-relevant to the discussion engines like big diesel 2 strokes).

DKW produced various bikes that used a charging piston. Trojan also produced an engine with a charging piston, but that was for 4 wheels.

[Flettner]

I’d be so pissed off if it was a dud. Think about it. Even if it was detuned from its 125cc/70 hp/30k claims to more utilitarian applications, it would bring about huge worldwide interest in 2 stroke engines, an interest that most of us here have and share.
It would offer an opportunity for many of us to utilize the technology or variants of it. 4 stroke conversions, 2 stroke conversions, kits etc.
Mind you, going into established competition applications there would be issues, just like the Ryger possibly gaining acceptance into current CIK KZ classes leaving all the other engines behind in its wake. All the TM, IAME, Lenzo etc companies wouldn’t even be happy.
The best thing it has done though, was to give many the challenge and inspiration to think outside the current “square” of the Aprilia RSA/RSW benchmark engine format.

True that

[F5 Dave]

Can't believe the GPR guys took it to the Auckland guys on mt wgtn. It's a hard track to learn. Certainly took me several visits to go fast and the pace has quickened a lot since then. Along with the bumps.

Congrats Regan and Nick. I never made that impression when I'd tried. Impressed.

Good to see Fish did well. Hope he wasn't held back too much by the old superbike rider he dragged along. good stuff.

[seymour14]

Can't believe the GPR guys took it to the Auckland guys on mt wgtn. It's a hard track to learn. Certainly took me several visits to go fast and the pace has quickened a lot since then. Along with the bumps.

Congrats Regan and Nick. I never made that impression when I'd tried. Impressed.

Good to see Fish did well. Hope he wasn't held back too much by the old superbike rider he dragged along. good stuff.

Nick especially has made some big inroads, that bike just rides so well around corners, probably a good thing in the end with Mt Wellington being a tight circuit.

I think the boys must be still recovering, have hardly heard a peep from them today. Bet they got home some time in the wee hours last night.

[mr bucketracer]

.

Some of the interesting bikes at the 2 Hour.

Attachment 317442

An old school classic Honda 4T twin.

Attachment 317443 Attachment 317441 Attachment 317447

Scott and the Team GPR 2T. This has to be one of the very best examples of a Bucket racing special.

Attachment 317444

Mike and Dave with Speedpros Team Shanny special.

Attachment 317440

Young Stroud is 13 and took fourth place in the forty lapper, just plane natural talent.

great pictures rob ! Good riding all round ,

[Yow Ling]

Can't believe the GPR guys took it to the Auckland guys on mt wgtn. It's a hard track to learn. Certainly took me several visits to go fast and the pace has quickened a lot since then. Along with the bumps.

Congrats Regan and Nick. I never made that impression when I'd tried. Impressed.

Good to see Fish did well. Hope he wasn't held back too much by the old superbike rider he dragged along. good stuff.

They must have learned how to blip between downchanges

[speedpro]

Well the 2Ts didn't fare very well in the 2-hour race. Seems to be an opportunity to consider rule changes to even the playing field. That's how it works isn't it?

Oh wait. 2Ts already have an unfair advantage

[kel]

Attachment 317438

Air cooled Kawasaki, possibly the fastest bike out there,

Without question the quickest bike out there (in a straight line). Was the riders handicapping that rocket ship.