Aprilia RS500

willy skrev:

Vad kostar ett kit? Är det en rs250 motor som modifieras?

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Helt ny motor...från TSS

samma grabbar -->
http://www.twostrokeshop.com/TSS1100GP.htm

Men denna gång med en 1100 triple i ett zx10r chassi ;_ ) Muuumsfilibabbaaaa

ramram skrev:

Helt ny motor...från TSS

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Ah coolt!

ramram skrev:

Helt ny motor...från TSS

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Baserad på ett RD 350 Block.

passa på nu alla som har drömmar om hojen

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=180484317364&ssPageName=STRK:MEWAX:IT

Hur går det för alla TSS500GP byggare?

Axxexs skrev:

Hur går det för alla TSS500GP byggare?

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Kan ju alltid slänga in en ny (nån vecka gammal) uppdatering från Twostrokeshop.
Nu verkar dom ju vara lite överoptimistiska i sina timelines...
men man får väl se det som rolig läsning och det ser ju ut som om projektet fortskrider.



An update is way overdue. We do apologise for being quiet - we have been very busy though in sorting out 11th hour issues.

Firstly, the 90 degree cranks have officially been cancelled due to recurring fuelling glitches, caused by the particular frequency and amplitude of vibes the 90 degree layout causes during (light throttle) running between 5000 to 7000prm, which froths fuel in the carb bowls. This was exacerbated when running the small 100mm flywheel on a race high-compression engine; as the inertia of the lighter flywheel made for choppy running.

Of course, this fuelling glitch should have been picked up early in the piece, and it's ridiculous that it was not. The truth is that most of the testing was done by hardened racers, on track and road, and consequently the throttle tended to be either wide open or snapped shut - as befits the press-on riding style of the race rider. This meant there was not enough running long distances at constant revs and light throttle openings - which are the very conditions that precipitate the fuelling issue.

I (Steve Rothwell) discovered the problems when road riding extensively around New Zealand, and because of this we switched to the 180 degree crankshaft - and the fuelling glitches from 5 to 7k went away. However, under increased constant-running scrutiny it emerged that there were still some burbles being caused by oscillations setting up in the inlet tract - which although it is the correct tuned length for this engine; nevetheless it is twice the length of many 250 single-cylinder MX intake tracts - and this presents with its own challenges. Please let me explain.

Note in the pic below how the distance from cylinder centreline to the end of the intake trumpets is 280mm. This longer than usual intake tract is more sensitive to engine vibrations than shorter intake tracts and because of this, there is more movement exhibited at the far end of the tract and in effect, a pendulum motion sets in at certain resonant frequencies that can unsettle the fuel in the carb bowls, again resulting in fluffy fuelling in certain conditions.



We have learned the hard way that this requires three remedies. Firstly, it requires softer, more pliable intake manifolds than we currently have (as seen in the pic above) - and which we were literally 'stiffed' with. Unfortunately the manifold manufacturer did a number on us, by sending us sample manifolds that had the right material properties (material hardness of 55 Shore) and that worked fine - but when the production manifolds arrived they were all 80 Shore - way too hard. Like I say, we were stiffed. And we put over a year of R&D into these manifolds - it was a huge kick in the guts.


Undeterred; we hired a manifold manufacturer in the UK who has a much stronger record of customer satisfaction(!) and you can see a pic of one of his manifolds below. Again we require the 55 Shore material, which is something we can consistently get from the new manufacturer.



The second part of the carb frothing remedy requires that the rear of the air filters be fastened down to the cross-bar that the seat bolts to. This arrangement, along with the pliable intake manifolds, allows the carbs to be well and truly isolated from engine oscillations. Not that the engines vibrate intrusively you understand; it's just the way the longer intake effectively 'amplifies' vibe inputs - thus the whole intake tract is more sensitive to engine movements.


The third part of the carb frothing remedy mandates that we run a heavier flywheel to smooth out the compression and power pulses. Thus we have purchased the necessary 250W, 18-pole stators and matching rotors - pics below - and also stator plates and trigger sensors. This doesn't mean to say we will be going back to a Wasted-Spark system, because we have figured out a way to run a two-channel, two-CDI ignition by using the twin-trigger-lobe flywheel in conjunction with a single trigger sensor.

As you can see on this page, we make a slot in the centre of the trigger lobe for cylinder#2, which then allows us to programme the signal this double-lobe makes into the software. This allows the dual-CDI ECU to differentiate between cylinders 1 and 2, and thereby we can retain the one-CDI-per-cylinder ignition system. This has been tested with a 1.2mm spark plug gap at 10,500rpm with no loss of engine power.






What this means is that with the kits we will be shipping the new intake manifolds, and stator and rotor and stator plate and trigger sensor setup, and a 180 degree, 58mm stroke balanced crank. (It doesn't matter if you already have one of our 90 degree cranks; we will sort that out later and of course it won't cost you a bean for the replacement crank, nor shipping any parts to us. We will sort it all out.)



It is extremely regrettable that these issues have caused delays on top of the already lengthy production delays. All of these engines and kits should have been shipped out in September. However, it was a good thing that I discovered these issues by riding at *ahem* legal road speeds and over long distances. The lesson learned here is a valuable one: "Don't let racers, no matter how good they are, do testing on bikes destined for the road." The racers were genuinely surprised by my findings, and indeed I had to send them out again on test-rides as many as three times before they were able to reproduce the symptoms I described. I was far from impressed. Lesson learned. From now on, only I will give the last word on how the bikes behave on the road.



What does this mean in terms of an ETA for engine kits/full engines? It means that now we have solved these issues, we have time to package up kits and assemble engines ASAP. The new production manifolds we will send out as soon as they are completed (mid-January) as well as the new 180 degree cranks and new rotors/stators/triggers/stator plates.


I will readily agree this has been an uncomfortably long process, and with indefensible delays such as the above making life even harder. There's a lot that just should not have happened. The test riders were evidently not able to detach themselves from the imperative of going at race pace; and did not fully enter into the spirit of what 'road riding' really constitutes. I had to come along and check for myself, and see things as they really are.


To say I am disappointed at the test riders' lack of finesse doesn't even begin to describe my feelings. But please be assured that now I am on the case, there will be no further issues. I will report again first thing in the New Yewar about shipping dates for all the components/engines.


In the meantime I wish you a great Silly Season! Please don't hesitate to get in touch for anything, anything at all.

My very best regards,
Stephen Rothwell

Two-stroke shop 1100cc motor.....

Fürstenhoff skrev:

Nä nä, väntar hellre på vår 1100cc motor i från Stephen Rothwell och Two-Stroke shop!!

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Va i h-vete...!!?........skall man tolka det som att du har beställt ???

...själv dreglar man som en hungrig labrador vid bara tanken......

Är det någon lycklig själ som beställt en TSS500GP? Eller motorkitet?

108 kilo i raceversion.....kombinerat med 130 hk.....detta är ju precis vad jag alltid har velat ha, varför är jag inte Paul Getty?

Fürstenhoff skrev:

Nä nä, väntar hellre på vår 1100cc motor i från Stephen Rothwell och Two-Stroke shop!!

Klicka för att visa mer...

Fürstenhoff skrev:

Beställt av Maestro himself och sagt att jag vill ha den snarast den kommer i produktion för montering i ett GSX-R600 chassi, men Maestro sa att dom just nu satsar på 500-motorn då det är den som dom kommer att tjäna pluring på (volym) - men den som väntar på något gott.............!!

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Väntar fortfarande på din ”beställning”? Har snart gått ett år.

Two-stroke shop 1100cc motor.....

Fürstenhoff skrev:

Beställt av Maestro himself och sagt att jag vill ha den snarast den kommer i produktion för montering i ett GSX-R600 chassi, men Maestro sa att dom just nu satsar på 500-motorn då det är den som dom kommer att tjäna pluring på (volym) - men den som väntar på något gott.............!!

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....skall du gissa om man blir liiite lätt avis så här...?......

Jag hoppas....förväntar mig...näe KRÄVER fortlöpande information inklusive bilddokumentation här på SH i en egen tråd när saker och ting börjar röra på sig.

Liksom inslag på nyheterna, dokumentärprogram på SVT och ett Aktuellt special om detta.........


För övrigt undrar jag precis som Chris Ash :

- "Är det någon lycklig själ som beställt en TSS500GP? Eller motorkitet?

108 kilo i raceversion.....kombinerat med 130 hk.....detta är ju precis vad jag alltid har velat ha, varför är jag inte Paul Getty?"

.....ahh!.......

DrT skrev:

...fortlöpande information inklusive bilddokumentation här på SH i en egen tråd när saker och ting börjar röra på sig.

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Anar att informationskällan inte är alldeles tillförlitlig...

DrT skrev:

För övrigt undrar jag precis som Chris Ash :

- "Är det någon lycklig själ som beställt en TSS500GP? Eller motorkitet?”.

Klicka för att visa mer...

Jag med! Kan tänka mig att det inte är ett alldeles problemfritt projekt som får de flesta att tveka när det är dags att ta fram VISA-kortet.

jonasb46 ovan har väl beställt en motor om jag förstått det rätt.

Radare skrev:

Anar att informationskällan inte är alldeles tillförlitlig...

Jag med! Kan tänka mig att det inte är ett alldeles problemfritt projekt som får de flesta att tveka när det är dags att ta fram VISA-kortet.

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Hade mitt VISA-kost bara haft nåt innehåll hade jag beställt en färdig hoj.....med Öhlins, kolfiberskrud, magnesiumfälgar, brembo....och sen vaknade jag.....

Här e nåra bilder på en gammal testhoj och lite "seriemässig" powervalve intrimning att värma sig med i vintermörkret.

jonasb46 skrev:

Här e nåra bilder på en gammal testhoj och lite "seriemässig" powervalve intrimning att värma sig med i vintermörkret.

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Oj, se på fan. Är det du och din motor?!

Nä, Wayne i New Zealand som monterar serie cylindrar, så man kan ju hoppas att dom kan börja skicka grejor snart.

Någonting att lägga sina pengar på kanske?

http://www.classic-motorbikes.com/Bimota_500_V-Due_FA67.html

bebbe skrev:

Någonting att lägga sina pengar på kanske?

http://www.classic-motorbikes.com/Bimota_500_V-Due_FA67.html

Klicka för att visa mer...

njaaaaaaaa
[YOUTUBE-ID]v-GpDA__KYw[/YOUTUBE-ID]

Gurra^^ skrev:

njaaaaaaaa
[YOUTUBE-ID]v-GpDA__KYw[/YOUTUBE-ID]

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Låter som hojen har svinhög etta. Synd att de aldrig fick allt att lira helt bra innan de fick lägga ner.