Hi, heres a question for you...

[W@nkel]

Hiya, im new here... my 1st post. OK, confession time, im yet another one of them old gits from BW (40!!!!).
So, you lot are teenage pocket rocket/ Tupperware missile jockeys then, eh? Right then.. Mr Wankel your history teacher here, stop sniggering at the back... Can anyone tell me which British bike manufacturer has won the BSB Championship twice in the past 15 years? (BSB was called F1 up until 1995) ... anyone? (not you Hellkat)... No, not Triumph.... No, not Foggy Petronas, bit of a wild guess that one and not really British ... anyone else? .... No? let me give you a clue, the riders were Steve Spray in 1989 and Ian Simpson in 1994... still no idea? give up?...

Click here for the answer

[Nighteyes]

Hello and welcome, thanks for the lesson....I was riveted
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My Precioussss!, My Bikes, The Lord & Master, Canis Lupus!
39. Something nice about the person who sent this to you? She's beautiful, funny, and has a huge heart.

[stinkwheel]

Good to see you w@nkel. Teach away!
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[McJamweasel]

Thanks for oh-so patronising lesson Mr Wankel, however I'm sure I'm not the only one that knew that.
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BCF: Be yourself, just don't be an arse.

[stinkwheel]

Don't worry, he's like that all the time.

Old git!
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[W@nkel]

[hellkat]

[hellkat]

They don't like patronising here, Wankel. They think we're being, well, patronising

Little do they know: we do it to each other, as well

You gotta slip it in subtly, where ya can, mate, in amongst the sensible posts
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Not nearly as interesting in real life.

[McJamweasel]

[Frost]

i thought the regulation changes ment the bikes had to either be a 2 stroke of 8 capacity or a 4 stroke of y capacity, and the norton was technically a 3 stroke?

[stinkwheel]

[W@nkel]

[hellkat]

Ahem.

He's a bit nippy down the quarter, too, our Wankel.


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Not nearly as interesting in real life.

[Frost]

I've allways wonderd something, perhaps this is a good time and place to ask it.
2 stroke motors mix the air and fuel together to form the mixture, which is then pushed into the cylinder, forcing out the old mixture. the next stroke the mixture is ignited.

4 stroke engines work more efficiently as the force out the old mixture with air, this way none of the fresh mixture is wasted as with 2 strokes as all that goes into the cylinder is air. fuel, is added next stroke, then ignition.

In which case inst a 3 stroke possible?
Expell old mixture/fill cylinder with air
add fuel
ignite

surely this would be possible and would have more power than a 4 stroke with the same efficiency? clearly this is not possible/realistic as i do not know of anybody ever doing it. so why isnt it possible?

[stinkwheel]

[W@nkel]

[Frost]

[W@nkel]

[stinkwheel]

Surely any form of injection of fuel at TDC would have to overcome the compression in the squish space without loosing it. You would need a VERY hefty fuel pump and would loose out on the 'swirl' effect in the combustion chamber as the fuel is drawn in.

Gunpowder pellets would work, as would any form of 'explosive' (ie self oxidising) fuel, you wouldn't need to have any compression at TDC for this to work either. Nitromethylene, any form of rocket fuel?, as the piston reaches TDC, have a machanism that squirts a dollop of your fuel in then seals itself and 'BANG'. You would need some sort of valve to release the pressure on the up stroke, like an exhaust valve.

So, in an engine with a plain bore and piston:

From BDC, exhaust valve open, upstroke to exhaust gasses.
At TDC exhaust valve closes, as yet undesigned (pushrod/cam operated?) injector system places self oxidising fuel in combustion chamber, spark, BANG, back to start.

An Infernal Combustion Engine, aka a Bomb!


Critique?
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[Ste]

Welcome to the forum.

Interesting thread, don't know the answer to the original question but do now (well not for that long probably with my memory working like a sieve at current ) but it interesting reading and to know about.

Ste

[Smoto Bob]

hehe wonder if i am related to Steve Spray
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F'it DO WHAT EVER MAKES YOU HAPPY!!!!! Even if it screws over everyone else :p
Titz wrote: "..and my 3rd accident was when this police car....."

[McJamweasel]

[Bendy]

[Luke_Retrofly]

Hi
I guessed norton, there wernt that many British manufactures around in 1994 and it wasnt Triumph, so must have been norton.

Luke

[Frost]