ESE's works engine tuner

[wobbly]

Well the talk about "big numbers" may very well be just that, but the proof is in the pudding, and the RG100 and MB100 are very close to what was predicted.
Here is concrete proof - the Sim for my 485 TSS engine, the dyno graph, and the comparo that there is around 10 to 12% difference.

[TZ350]

Here is concrete proof - the Sim for my 485 TSS engine, the dyno graph, and the comparo that there is around 10 to 12% difference.

Thank you for bringing Science to the party, I am looking forward to seeing where this goes .........

[RMS eng]

TeeZees motor as it is now, thats 27 RWHP and 3.5K power spread.

Attachment 227997



With all this talk about big HP numbers we are forgetting what TeeZee has achieved with his old GP125 ...........

Hands up anyone else with an F4 Aircooled 125 2-Stroke thats making 27 RWHP or 26 or even 25, any takers at 24???

It's just all talk untill its done.

all this dyno talk is one thing but these big HP two strokes need to do some thing on the track,all the talking is being done by 24hp 100kg 4 strokes,and the best lap at the GP 2 years ago was by a 20hp derbi 80 and still think it is Dave D will know.

[kel]

.

The smile says it all...............

Look at the power spread

Damn it I new he had more power, shame about the brakes

[Rick 52]

Damn it I new he had more power, shame about the brakes

Hhahah you might have to explain !! Your handle bar hooked my leathers that's why we hit the grass !!
Not that this is a problem ! The extra power is just in the carb and pipe and lots of time playing with settings ...The carb is from a XR500 and the header from a DR250
the can is the old can cut shorter with the inside cut out and a perforated steel tube with packing around the outside...

[50bucketracer]

all this dyno talk is one thing but these big HP two strokes need to do some thing on the track,all the talking is being done by 24hp 100kg 4 strokes,and the best lap at the GP 2 years ago was by a 20hp derbi 80 and still think it is Dave D will know.

The Derbis never got the chance to show their worth in 2010 with neither running properly in the wet. But Nathanael did qualify fastest in 2009 on his then 18hp Derbi 80, with a 1m26.25, which was nearly 3 sec faster than anybody else, until the piston broke... Maybe 3rd time lucky in 2011! His had 20hp for 2010 & mine a little more. Nobody came close to that lap time this year with F4 official timing only in the wet. Wonder if we can find a bit more for next year... have to beat those pesky diesels!

[bucketracer]

all this dyno talk is one thing but these big HP two strokes need to do some thing on the track.....

By his own efforts TeeZee has managed 27RWHP, I don't think any one else in F4 125 2T has managed that, and not a single.... whow.... great..... look at that.......all I hear is your moaning...........

[TZ350]

RMS eng is quite right, these big hp 2-strokes are yet to prove themselves.

But it is only time before someone with more riding ability than myself builds one as its simple enough.

All of my work is done with simple hand tools and some skill that anyone can apply.........



I find the two most usefull tools are the long die grinder tips and the white piece of plastic pipe for checking the heights of the ports.



Using the drill press for opening up and flatining the angle of the rear transfers........... crude but effective

There is no cheque book racing here, the bits are all from the 70s and 80's except the secondhand rod kits that I salvaged from an old RGV250 crank.



A good view of the side ports in a Racing 50.

These Metrakit Pro Race barrels in different capacitys can be brought off the shelf for Aprilias, now that would be Cheque Book racing and I suspect a little outside the spirit of the Bucket racing rules............. nice though

[F5 Dave]

. . .
A good view of the side ports in a Racing 50.

These Metrakit Pro Race barrels in different capacitys can be brought of the shelf for Aprilias, now that would be Cheque Book racing and I suspect a little outside the spirit of the Bucket racing rules.............

They are out of the rules let alone the spirit.

They (metrakit race) are made for racing so easily fall into the competition parts category.

"Engines must be derived from non-competition motorcycles.
Motocross, Road Racing, Enduro and Go Kart motors and transmission parts are not permitted."

Clearly they would be deemed Road Racing.


I think the road going parts are a grey area, but race is race.

[richban]

Nobody came close to that lap time this year with F4 official timing only in the wet. Wonder if we can find a bit more for next year... have to beat those pesky diesels!

You are living in the past. All you guys talk like you were going to win with your big HP and fancy light bikes. The fact is, Andrew won on a modified commuter bike with crap suspension and he just out rode everyone on the day. Your comments annoy me.

[TZ350]

All you guys talk like you were going to win with your big HP and fancy light bikes.

We sure hoped so........... but then that would have been to easy.

The fact is, Andrew won on a modified commuter bike with crap suspension and he just out rode everyone on the day.

At Taupo, I think it was Andrew A who told me, "for $$$ and Time you can get HP but to have a Fast Bike you have to Ride the Wheels of It".

Some of us have HP, Andrew has a very fast bike........ all credit to him and the others at the pointy end.

[F5 Dave]

You are living in the past. All you guys talk like you were going to win with your big HP and fancy light bikes. The fact is, Andrew won on a modified commuter bike with crap suspension and he just out rode everyone on the day. Your comments annoy me.

um. . . Dave's point, was his son's bike wasn't a big horsepower bike. 18hp & that was only last GP. But wet is wet & dry is dry. And you can't argue with twice in a row results from Andrew.

And like since when as smack talk not been a part of racing?

[TZ350]

.

OK.... I am now holding my hand up for the prize awarded to the most heavily ported GP125 cylinder..........



After this I am going to talk to the man at Wobbly-Pipes about a decent chamber design to replace the old RS one I have been using and for some advice on where to go from here.

I have a lot of confidence in the development and simulation software he uses and what he can do with it ...........

[Buckets4Me]

all this dyno talk is one thing but these big HP two strokes need to do some thing on the track,all the talking is being done by 24hp 100kg 4 strokes,and the best lap at the GP 2 years ago was by a 20hp derbi 80 and still think it is Dave D will know.

well stop the blody rain then will you

old guys dont like rain

none of the big HP bikes ran this year (they say it's because they didn't have wets. I think it was because the didn't want to get wet)

bring on next year

do you rember #52 (new bike and not very finished yet) wait till we get him to build a motor with 42% more HP

[TZ350]

.


These side exhaust ports are hard work, now if there was a way to bring them straight out the side between the fins then I could put more of them in for even more blowdown time area..............