ESE's works engine tuner

[crazy man]

how much would you pay for this bit of rubbish? gt50

[worm13]

ummm would a marriage do?? other then that I think your asking to much!!

[TZ350]

I have been looking at the Trombone pipe again and can see that its best used for extending over rev. So I need a pipe that makes good power at 9,000 rpm with an exhaust opening at 82 deg ATDC and then by shortining the trombone I can keep the system in resonance for a good 4k maybe even 6 at a stretch.

The down side is the plenum which adds a usefull bit of top end but only works over a limited range, good for a conventional pipe but detracts from a Trombone style pipe as the plenum only works well in one place then reduces the power elsewhere.

If you take the sim as I last ran it then do a Turbulent Model with your ignition curve,the TuMax will be thru the roof,and the program will probably scream DETO WARNING at you in the mis range.

The EngMod det warning that would have told me that I was in dangerus teritory on my earlier engine.

[husaberg]

how much would you pay for this bit of rubbish? gt50

I sat my learners on a GT50, Mag wheels and a disk brake It was a mates but i still thought it was bitchen.
But where they air cooled or water cooled?

[2T Institute]

A nice pic of the latter Roberts Proton V3 cylinders (the one that started to go well before the 2002 4T change ) Spool PV's with a ATAC chamber. Looks as though they had experiments with volumes to.

[crazy man]

I sat my learners on a GT50, Mag wheels and a disk brake It was a mates but i still thought it was bitchen.
But where they air cooled or water cooled?

was air cooled now water . this one has the nz land speed record for a 50

[worm13]

was air cooled now water . this one has the nz land speed record for a 50

Who bulit that awesome machine!! hahaha I know where there are photos of it when it had set the record and there was also a matching sidecar outfit to boot!

[crazy man]

Who bulit that awesome machine!! hahaha I know where there are photos of it when it had set the record and there was also a matching sidecar outfit to boot!

better post

[worm13]

better post

Yup will do, give me a couple of days to sort it all out and il post them! bike looked pretty cool way way way back in the day!

[speedpro]

I could never beat Pete on that bike but my AC50 was fast enough to keep him honest and he fell off at Whakatane and removed a bit of flesh keeping in front. I think him and Ram turned up in a van full of buckets with a sidecar tied to the roof on the inside to that meeting.

[jasonu]

A nice pic of the latter Roberts Proton V3 cylinders (the one that started to go well before the 2002 4T change ) Spool PV's with a ATAC chamber. Looks as though they had experiments with volumes to.

Mate I don't remember any of the Roberts Protons doing well at any time.

[TZ350]

These graphs were drawn using kW's so that the curves might more visualy represent the real DIN or PS hp I might see from the back wheel on the dyno.



I have been looking at the Darcy RG500 pipe that peaks at 10,500 and simulating it with a Trombone header. By shortining the header 130mm It looks like I can get the power spread to extend out to 14K.

It might be down a little on power but the total amount of power under the curve is much greater than I had before.



This is the same Darcy pipe and Trombone header simulated with a 2L Plenum, the combination bumps it into the low 30's.

[husaberg]

Mate I don't remember any of the Roberts Protons doing well at any time.

Jeremy McWilliams put one on pole once,can't remember where. So it must have gone well at least that day.
He would have looked a bit younger than this though.

[TZ350]

EngMod2T



I remember there was a bit of a discussion about whether the expansion chamber supercharged the engine when it is in resonance.

Well at a delivery ratio of 1.4, the pipe must be doing something.

[2T Institute]

Mate I don't remember any of the Roberts Protons doing well at any time.

Jurgen van de Goorbergh finished 13th in the championship in 2001 (looks like the team sat out 4 or 5 GP's) finished best of 7th and worst 13th. Up against 4 factory NSR500's and 6 factory YZR500's and 2 factory RGV500's with the best riders the factories could afford on a self built bike with a rider they could afford, is pretty good in my books.