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You are not comparing apples with apples. Taking the rpm at peak power ( NOT peak rpm ) the the RSA at 13,000 making 55HP had a bmep of 15.17 Bar...

well that explains it.. I only had time to watch the race and didnt get the reviews etc

If a 54mm stroke thing can do 14800 rpm all day according to You, then a 40 mm stroke thing can do 19980. And need a BMEP of 13.8 Bar

Did we all see the "chatter" on jack's rear wheel in qualifying? there was a slo-mo at one point and it looked like the whole swingarm had a massive...

Neils , I suggest you check your maths , a 50cc making 35 crank Hp would need a BMEP of 18.65 Bar at 17,000rpm - Im sure I could not make EngMod...

The wheels of justice grind slow. It has been four years since Trump's various attempts to overthrow the election result. In the 160 page document...

If it starts to get bids. A 350 would have maybe some chance. Nah I think 8-10k. No engine work. You could get an Aprilia for that maybe.

Apparently used more fuel on the sighting lap than planned so had to race in economy mode.

sure was.. bummer for Acosta, and Pecco was running on a depowered map the whole race? odd

The above symposium has some great presentations on opposed piston engines. One of my favorite engines is being evaluated for military use in new...

I totally agree with you (STA, timing,...) but my question was really to know if the volume of a port was significant (google translate is bad at...

1961-The film Breakfast At Tiffany's is released.

Today even, the sprint race is done and it was an interesting race.

I had a good time on mine when I was in Perth in the late '80s

The problem is language. If You had asked : Is there an optimum area relation between these independent of cylinder size? the answer is Yes...

Thanks for the opinions. Also today in other MM news.. a couple of millimeters of green denied him an all time lap record. Tomorrow could be very...

shit... close to 12k and not ar reserve...fuck I shoulda kept...

Wobbly, I seem to have read somewhere on this "ESE's works engine tuner" that most of the gases admitted into the cylinder during the scavenging...

Wind of 100kph in slow corners would do a fair amount to direct the heat away from the rider. Not quite as spectacular as Edwards on the Cube....

Please enjoy https://drive.google.com/drive/folders/1ZTQPG-bZZUT7HNBMqT3NqlItJd6AGBuj

I can't rule it out.....nor the selling if themselves to trump....

Now there's a headline... Wrong Peters though. This one was a County Clerk who really believed Trumps bullshit about election fraud - she still...

Thanks, wobbly! Yes, i know. 54,5mm stroke. Not 54. sorry. I will edit my post.

The 3XV cylinder with 56 bore can be ported to match the scavenging regime of the RSA , but as it sits on a 50.7 stroke it can never match those...

Wobbly, are there any news about the 3XV cylinder TZR 250 engine? Have you dynoed it yet and did it actually make 54hp/cylinder? It would be awesome....