ESE's works engine tuner

[TZ350]

Looks like Ned has opted for an aircooled engine.



For real drive out of corners use a steam engine, max torqe at min rpm.

[husaberg]

Mick just said - "maaaete,turn the fuckin things off and give it a go."
Went out and put it on pole,easily.

Afterwards he no doubt said "No Worries maate"

In all fairness with all due respect to Mick he was gifted.
But from what can understand Mick hated change.
All he wanted to do was ride what was in essence the 92 spec bike and win.

The only reason they probably managed to convince him to test it in the first place was the title was well sewn up already.

While It is hard to argue with this methodology given Micks results.

The thing is with 5x the engine size and with 6-8 times the power (185-200 odd BHP supposedly) on a bike weighing about 135kg , Even Mick didn't really need the extra stomp anyway.
These factors are not nesercarily the case with a 80 odd kg 100cc bucket on a tight go kart track with a rider lacking the demi god skills of Mick.

But binning the idea after one test season is not quite what I would call a through examination of the idea.
24-30% extra midrange is impressive result in anyones language.

If you reverse the idea around or use faster responding medium I think it has merit.
While I have no doubts similar results can be achieved with ignition or PV
What happens after these are optimised?

Is the switching of the power jet at near peak revs as Woobly has suggested achieving this result by default?
Are some of the increases due to the pipe temp, Rather than with more precise fueling?
Is the over rich mid to lower top end working here to lower pipe temps in mid range too?

If can you believe Wayne (Gardner) asertions on how HRC with its 200 full time finally staff managed to get the NSR to handle at a least passible ie “RGV like” thereby giving Mick something capeable of being refined into the weapon with Micks input it became.
I can see HRC were not as infallible as some people might think.

There are other inert substance that could provide a short term cooling effect plus other, More volatile substances that can provide a short term heating event used in tandem you could have the best of both worlds

My point is,
Anything that can add useful mid range power to a 2 stroke should not be dimissed without further investigation.

[speedpro]

Looks like Ned has opted for an aircooled engine.

I love it. A good later model RS125 hacked to fit a GP engine. Who said bucket racers aren't serious?

[F5 Dave]

. . .
Dave: its a 1991 CBR250RR (MC22), is fairly wide, will let you know how it handles after next weekend.
. . .

Ahh, that's why I didn't recognise it. From the side it looks very purposeful, but odd suspension set up. Wide huh? Can't fit it in the press & skinny it up a bit? Suppose it would get a bit long then ahh I crack me up!

[wobbly]

I was just pointing out that the idea of using water, great as it may be in theory, and on a dyno when looking for bottom end, it "works" just fine.
But in a controlled test to see if its was usefull, it failed, as the systems effect had to be reduced so much that any gain in bottom end was still offset by a loss in the top end.
As Burgess said,when the effect was usefull,it took too long to reheat the pipes.
My thoughts,from the testing I did with a PV and ATAC operated separately ( instead of combined together as many MX engines have now) is that this works real well with no down sides at all,and is easy to implement.

If you or someone can refine the original idea - then great.

[husaberg]

I was just pointing out that the idea of using water, great as it may be in theory, and on a dyno when looking for bottom end, it "works" just fine.
But in a controlled test to see if its was usefull, it failed, as the systems effect had to be reduced so much that any gain in bottom end was still offset by a loss in the top end.
As Burgess said,when the effect was usefull,it took too long to reheat the pipes.
My thoughts,from the testing I did with a PV and ATAC operated separately ( instead of combined together as many MX engines have now) is that this works real well with no down sides at all,and is easy to implement.

If you or someone can refine the original idea - then great.

Yeah in regards to the ATAC With a power valve I was thinking along those lines for the "The new hush hush cloak and dagger even more secret than Speedpro's Rod project".

Ie the PV for the timing and the ATAC for volume.

Were you aware of the Gardner photo session story? I think it’s hilarious to think that’s what HRC had to do.

Was I on the right track with the power jet Wayne?
Or just off on a tangent?

[jasonu]

Was I on the right track with the power jet Wayne?
Or just off on a tangent?

Send him some chokky fish and he might send you an answer...

[husaberg]

Send him some chokky fish and he might send you an answer...

I keep eating yours,Sorry
I will have to develop more willpower.
Are you using our RS frame,
Now just how many Choc fish would it take to "borrow" it for a bit

[jasonu]

I keep eating yours,Sorry
I will have to develop more willpower.
Are you using our RS frame,
Now just how many Choc fish would it take to "borrow" it for a bit

What is this 'our RS frame'???

[wobbly]

Im not allowed Chokky Fish bugger it as I have type 2,that is under control with diet and single malt.
But the powerjet switched with a solenoid is done just after peak power,as the engine is most efficient at peak torque,where it needs the most fuel.
But the carb doesnt know about efficiency, only bulk flow past the main jet - and the flow keeps rising as do the revs,so the mixture goes rich over the pipe ( thus reducing the temp).
By switching off some of the orifice area ( PWM is way better) we can lean down the fuel curve into the overev and heat the pipe up way more than is possible at peak torque.
On a HRC - RS250 for example the solenoids are activated at 12200 to 12800 ( adjustable plugs in the loom) and it will rev hard to 14000.
Without the powerjets it falls dead just past peak power at 12000.

[husaberg]

What is this 'our RS frame'???

Whoops missing the Y from your sorry.
looks like I need to employ a Font fairy as well as punctuation pixie and a spelling smurf

[Buckets4Me]

looks like I need to employ a Font fairy as well as punctuation pixie and a spelling smurf

when you find your's (HA HAHA ) can you let me know where ?

[Moooools]

Attachment 243166
And there is also a pic of my nice new subframe. Aluminum, weighs 800 grams! weigh, weigh better than the original steel item which was 3.8kgs, just don't know how it will go in a crash test...
Now if I can do something about the 4.5kg gas tank and get my new pipe on there I might be down to around 85kgs.

Sorry I know it's not as exciting as those damm sexy pipes wobbly posted up

Just went back to look at your bike. 4.5kg tank can be sorted.
1. Go to trademe and order pit bike tank
2. To to burnsco and by fiberglass cloth, epoxy resin, pva releasing agent and mold release wax.
3. Apply two release agents as per instructions, or however you like it.
4. Apply fiberglass how the Internet says to, but keep it thin, really thin.
5. Abuse the now dry fiberglass shell until it is no longer stuck to the tank.
6. Strengthen the shell from the inside until you are happy with it.
7. Comment on how ugly your handiwork is, and tell yourself it will look better next time you do it.
8. Put it on the bike.
9. Race the bike.
10. Realise that you forgot to put the pit bike tank in.
11. Put the pit bike tank in.
12. Never try and make one that looks better.
13. Work out that if you had used the same amount of time starving yourself instead, then you and your bike would look better and weigh the same amount.
14. You're welcome.

[husaberg]

wobbly;Im not allowed Chokky Fish bugger it as I have type 2,that is under control with diet and single malt.

Single Malt? well really I thought it would be forbotten

Still leaves green bananas though I guess.Bugger

Did Honda with the NSR500 H20 injection either shield/Lag the pipes.
My guess is at speed the cooling air would drag out a huge amount of temp as well which is the opposite of what it needs too.

I was thinking antilag (ala turbo rally car) but the pipe wouldn’t survive the bang I guess maybe a hot wire heater and or meths in the water injection for removing latent heat then going bang for reheat.I guess it ony needs to fire once or so to reheat the pipe?
And yes before anyone says I know meths is not a bucket legal fuel.

[Dutchee]

13. Work out that if you had used the same amount of time starving yourself instead, then you and your bike would look better and weigh the same amount.
14. You're welcome.

Lol, if he weighs 85kg I'd be shocked. He's a skinny runt. Not all bucket racers ate all the pies, some were too slow and missed out on them.
Then again, maybe he weighs more than it looks. But he ain't Buddha's size lol
Oh, just got told who'd post this, he'd be around your size.