ESE's works engine tuner

[TZ350]

maybe someone should post a on-board video of both Mt Welly and of the Wellington track to show Frits what sort of tracks you guys are racing on.

Here it is, Av on Ned Kellys bike at Mt Wellington. She did well in spite of the failing gearbox.





And Av herself ...



Photos from Damions collection.

[Frits Overmars]

Great stuff Frits. Re ajustable pipes: I know Cagiva ran a Hydraulic system and I think electric is to slow and to thirsty for power.....My idea was compressed air. Easily rechargable light Nice and simple, super fast and a little goes along way.

Compressed air is rechargeable and simple. I am not so sure about 'light and going a long way'. You might want to do a rough calculation on how much volume at what pressure you consume each time the pipe is moved. That could force you to use a bigger air bottle than you had planned...
A CO2-cartridge could be your way out: I estimate its energy density to be about a hundredfold better than air. Or, what I would do in Holland: use LPG (liquified petroleum gas, or autogas). I don't know whether you guys use the stuff in NZ, but I can get it at every street corner; the pressure is about 8 bar and being liquid its energy density (just talking about the pressure, not about what happens when you light it) is much better than that of compressed air.

EDIT: while I was typing, TS350 (well, allright, TZ350) was kind enough to post a Bucket video, which I am now going to enjoy. Thanks, TeeZee.

[husaberg]

Compressed air is rechargeable and simple. I am not so sure about 'light and going a long way'. You might want to do a rough calculation on how much volume at what pressure you consume each time the pipe is moved. That could force you to use a bigger air bottle than you had planned... A CO2-cartridge could be your way out: I estimate its energy density to be about a hundredfold better than air. Or, what I would do in Holland: use LPG (liquified petroleum gas, or autogas). I don't know whether you guys use the stuff in NZ, but I can get it at every street corner; the pressure is about 8 bar and being liquid its energy density (just talking about the pressure, not about what happens when you light it) is much better than that of compressed air.

EDIT: while I was typing, TS350 (well, allright, TZ350) was good enough to post a video, which I am now going to enjoy. Thanks, TeeZee.

Firstly whoops on the Spanish/ Italian. I struggle enough with Engerish as it is.
I have a mate from Basque (He would hit me if I called him Spanish) and a former work colleague who was a Spanish speaking Chilean and neither of them sound remotely like that fellow. As they now have a Spanglish accent.
He speaks so fast he could be from anywhere Latin based for me.
PS I wonder why if hes talking about the Honda wearing a Yamaha shirt who was he?
Apologies for my ignorance if hes Famous.
Matt Oaxley was the English commentary bit beneath i think.


Thanks I had not seriously considered CO2 and Nitrogen.
I think the safety police would frown on the LPG bit, but yes we do use it here.
The light bit was compared to batteries charging system and electric actuators or Hydraulics
I did a rough calculation on what my spreader air ram tailgate bit, me and a mate made up with a air ram single action with a spring return made from a hydraulic cylinder it has never needed filling but I get what you are saying. Paintball alloy co2 cylinder or a soda stream bottle was what i way going to try first.
The idea of the compressed air was I could use it for the water injection power as well as the reheat.
I believe the VW Beetle used it for a window washer from the spare wheel or similar.
Our races are generally 10 minutes or so.
The other idea was to fill up the frame spars. I was going to make up a frame with the tanks embedded in them if it worked. Added rigidity?

[Frits Overmars]

....Thanks I had not seriously considered CO2 and Nitrogen. .....The other idea was to fill up the frame spars. I was going to make up a frame with the tanks embedded in them if it worked. Added rigidity?

Bimota did that once: they built a pressurized thin-wall tubular frame with a manometer, so you could scientifically establish when the frame had developed a crack.
Added rigidity: sure. Maybe not so that you'd notice, but it certainly won't hurt. I once filled most cavities in my car with expanding building foam. It made the car feel twice as stiff!
Going electric on the movable pipes is not too bad either. I was talking about a Yam TZ500 four cylinder sidecar engine, but for a single the electricity consumption will not be all that much. Here are some pictures to wet your appetite:

[Frits Overmars]

..........

[Yow Ling]

Hi Frits, Not all the bucket racing is run on Kart tracks, In the South Island we are forced to race on full size tracks and street circuits here is a short video from a bucket race last weekend at Greymouth, there are 30 starters on the grid

http://www.youtube.com/watch?v=VZZMEFjAOeg

[husaberg]

Hi Frits, Not all the bucket racing is run on Kart tracks, In the South Island we are forced to race on full size tracks and street circuits here is a short video from a bucket race last weekend at Greymouth, there are 30 starters on the grid

http://www.youtube.com/watch?v=VZZMEFjAOeg

Awesome stuff.

I should be noted that the lap times are not much slower than the F1 bikes.
(Chris Elley Suzuki GSXR1000) was looking a little bemused when I pointed that little gem out.
If the Supermoto were to run the full track without the jump section they would wipe the floor with them all.

Where are all the Left handers.

My father and a couple of his mates started this meeting 22 years ago to help the community get going (and to ride there old bangers) again after two back to back devastating floods in 1988.
The water was 1-2 meters through the town
The circuit is heavily cambered to cope with the Sub tropical down pours Greymouth gets at times.
The council kindly made the Traffic islands removable.
For years there was an agreement for the supermarket which was situating in the Pit area and the one outside the circuit to stay shut on the Sunday so there would be no loss of revenue for the supermarket.

[TZ350]

carb can be no bigger than 24mm (measured at the venturi as the manufacturer did...)

That is your interpretation of the rule , but not how the rule is written in the rules of competition

Jason may have been thinking of the taper that is designed into the carb (and also nessasery for extracting the plug during the die casting process) and that a 24mm carb measured at the venturi will taper out to 25-26mm at the engine side of the carb.

Team ESE are gearing up to manufacture their own style of carburettor that will be for sale to all comers at $385 and includes a full set of jets and needles, a conventional bike carb layout is like it is because that is the easy way to die cast them and keep manufacturing costs down there are better ways of getting a carburettor to atomise the discharged fuel droplets into the air stream.

The ideas are based on the kart carb where the high velocity atomisation area is separate from the flow disrupting throttle area. The prototype has performed well in dyno tests and on the track.

There will be enough made for everyone with the $$$ and in true ESE style when the production units are ready along with the sales add the design details will be posted so anyone who wants to can try their hand at making their own.

We are not expecting to sell many, there can't be that many race class's limited to 24mm carbs, purchasing carb bodies suiting our own ideas and then finishing them off ourselves and then offering them for sale to anyone and everyone at a reasionable price makes us a manufacturer albeit a boutique one.

As a manufacturer we specify our carb size as the total area measured at the narrowest point.

[husaberg]

Team ESE are gearing up to manufacture their own style of carburettor

The ideas are based on the kart carb where the high velocity atomisation area is seperate from the flow disrupting throttle area. The prototype has performed well in dyno tests and on the track.

EI Lectronishish but with std needles and Jets? I hope it is super short

[kel]

Team ESE are gearing up to manufacture their own style of carburettor that will be for sale to all comers at $385 ... for sale to anyone and everyone at a reasonable price makes us a manufacturer albeit a boutique one.

I love boutique, it'll go just nicely with my hand made swiss watch All joking aside (yes another attempt at humour Dutchie) if the performance is proven then $385 is more than fair for a hand made carb.

[husaberg]

I've got it, and some more papers from 'Prof Bob' as he was called in the GP-team. Robert Fleck too used a simple total-loss direct injection system.
Alas, these papers are at my home and I am not, and I won't be for some time.

The best way out of all of this would be a continuously variable transmission and I would have developed one a long time ago if only it had been allowed in GP racing...
.

That would be great to see the original papers thanks.

I am not that familiar with the CVT system workings other than scooters have them.
I did however post some monotrack that had a Snowmobile transmission and motor that always interested me.

My son also races a KTM 50 and I am forever amazed how well they go with a simple slipper clutch. They accelerate and lap as well as a well ridden 65.
The only thing I would find unnerving is on over run.

That would take some getting used to unless they could lock back in on overrun.

[TZ350]

Taken from:- http://50iniepoca.forumfree.it/?t=43987929&st=75

....... The regular championship drivers all have 50cc...

Roffe's Hägarelli is 50cc for sure,about 15hp high torque......the main reason why he is fast are the racing skills of this viking and no brains.

The weight of Roffe is not so important as you think,only on a long straigt it matters a lot,on a short track like Adria you can be surprised what a heavy driver can do with a well tuned and geared 50cc bike

I am heavier than Roffe(110kg)and i can't beat him in the corners,he is a better driver,but there are a lot of leighter drivers who i keep behind me,if i can i will show you on Adria

René

A great 50cc race, http://www.pvlspecialisten.se/index/...9edit_0002.wmv

Originaly linked by Husaberg

[husaberg]

Taken from:- [URL]he regular championship drivers all have 50cc...

Roffe's Hägarelli is 50cc for sure,about 15hp high torque......the main reason why he is fast are the racing skills of this viking and no brains.

The weight of Roffe is not so important as you think,only on a long straigt it matters a lot,on a short track like Adria you can be surprised what a heavy driver can do with a well tuned and geared 50cc bike

Is that Roffe that Swede of MB50 disk valve Derbi cylinder fame?

http://translate.google.co.nz/transl...26prmd%3Dimvns

[Henk]

A great 50cc race, http://www.pvlspecialisten.se/index/...9edit_0002.wmv


Couldn't be bothered quoting.

Unbelieveably cool

[F5 Dave]

Hi Frits, Not all the bucket racing is run on Kart tracks, In the South Island we are forced to race on full size tracks and street circuits here is a short video from a bucket race last weekend at Greymouth, there are 30 starters on the grid

http://www.youtube.com/watch?v=VZZMEFjAOeg

We'd like to apologise these Si guys are keen on their dirty diesels.

Thanks Frits
Interesting what you are saying about PVs. I'd always thought of ATAC type chambers as mere wave disrupters but PVs as true timing changers. What you are saying is that PVs are less effective at this than I thought. This also poo poos something I'd read recently & questioned suggesting that non effective PVs (not super close to piston) would cause a bike to run badly, but if they are disrupting an out of freq returning wave the they are working as required.

Thank you for the insight.