Night Owls Chatterbox - Part LX!
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I fail to see what does having a kid and being married absolve you from debts
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Originally posted by the Bear:
it's a type of two stroke engine..
two stroke engines give a hell of a lot more power than similar capacity 4-strokes
and the thing about the kup-kia, they'll run no matter what.. the ultimate low-maintenance machine...
the documentaries called it the no.1 bike ever built
If 2 strokes engines give a lot more power than similar capacity 4 strokes, then why are big supersports bikes built with 4 stroke and never 2 strokes?
By right the higher the cc the more power you need and the more fuel it burns, like cars mah.
If not I'll go to the library and read up more. Wiki around is very ma fan.
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Originally posted by soleachip:
If 2 strokes engines give a lot more power than similar capacity 4 strokes, then why are big supersports bikes built with 4 stroke and never 2 strokes?
By right the higher the cc the more power you need and the more fuel it burns, like cars mah.
If not I'll go to the library and read up more. Wiki around is very ma fan.
2 stroke = whole combustion cycle in 2 strokes.. 1 power stroke, 1 to remove exhaust..
4 stroke = whole combustion cycle in 4 strokes... 1 power stroke, 3 others to take in fuel and remove exhaust...
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Originally posted by soleachip:
By right the higher the cc the more power you need and the more fuel it burns, like cars mah.
On a two-stroke engine, the air-fuel mixture in the cylinder is ignited on every downstroke of the piston. The crankshaft experiences a power stroke every 360 degrees of rotation.
On a four-stroke engine, the air-fuel mixture is ignited on every other downstroke of the piston. The crankshaft experiences one power stroke every 720 degrees of rotation.
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Originally posted by Meia Gisborn:
On a two-stroke engine, the air-fuel mixture in the cylinder is ignited on every downstroke of the piston. The crankshaft experiences a power stroke every 360 degrees of rotation.
On a four-stroke engine, the air-fuel mixture is ignited on every other downstroke of the piston. The crankshaft experiences one power stroke every 720 degrees of rotation.
Originally posted by the Bear:2 stroke = whole combustion cycle in 2 strokes.. 1 power stroke, 1 to remove exhaust..
4 stroke = whole combustion cycle in 4 strokes... 1 power stroke, 3 others to take in fuel and remove exhaust...
Ok bear and Meia gisborn, 4 stroke for faster speed but lesser engine power. 2 stroke lesser speed but greater engine power. If I get this wrong just ignore me and I'll go ask instructors these questions.
This is seriously very cheem. So what I'll use in riding school will mainly be 2 strokes?
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nope.. power is power = more speed.. supposedly..
but usually 4-strokes.. if i'm not wrong, Singapore doesn't allow 2-strokes anymore.. too much fumes..
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Originally posted by the Bear:
nope.. power is power = more speed.. supposedly..
but usually 4-strokes.. if i'm not wrong, Singapore doesn't allow 2-strokes anymore.. too much fumes..
Wah kao, when I took driving lessons, was told that 1st gear has more power, lesser speed, 4th gear has lesser power but going at higher speed. Either that or the theory is completely different and I need to go back to the books. I shall come back with more questions soon!
1st lesson on Saturday and I can't even ride a bicycle. But it's fine, I hear they just make you crash into walls of tyres repeatedly on your very first lesson.
Thanks bear.
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Originally posted by soleachip:
Ok bear and Meia gisborn, 4 stroke for faster speed but lesser engine power. 2 stroke lesser speed but greater engine power. If I get this wrong just ignore me and I'll go ask instructors these questions.
This is seriously very cheem. So what I'll use in riding school will mainly be 2 strokes?
In general, a two-stroke engine is able to achieve higher RPM at the expense of torque. There are few moving parts in a two-stroke engine (i.e., no cams, lifters, valves, rocker arms, etc.), but since some of the exhaust gases are invariably mixed with the fresh fuel-air charge coming into the combustion chamber, it does not burn fuel as efficiently as a four-stroker.
A four-stroke engine generally runs at a lower RPM due to all the additional moving parts, but burns fuel more efficiently (since almost all of the exhaust gases have been expended on the piston's exhaust upstroke) and generates more torque than a comparably-displaced two-stroke engine.
All of the above is in the context of aircraft engines--there might be differences when applied to motorcycle engines, though.
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wah.. learn to ride a bicycle first.. really...
you'll need that skill..
anyway, i'm going to sleep.. good luck with your lessons..
goodnight everyone
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Originally posted by soleachip:
Wah kao, when I took driving lessons, was told that 1st gear has more power, lesser speed, 4th gear has lesser power but going at higher speed. Either that or the theory is completely different and I need to go back to the books. I shall come back with more questions soon!
This has more to do with gear ratios and less with engine power/displacement.
At a lower gear ratio (i.e., 1st or 2nd gear), you're trading speed for torque.
At a higher gear ratio (i.e., 5th or 6th gear), it's the other way round.
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Originally posted by Meia Gisborn:
In general, a two-stroke engine is able to achieve higher RPM at the expense of torque. There are few moving parts in a two-stroke engine (i.e., no cams, lifters, valves, rocker arms, etc.), but since some of the exhaust gases are invariably mixed with the fresh fuel-air charge coming into the combustion chamber, it does not burn fuel as efficiently as a four-stroker.
A four-stroke engine generally runs at a lower RPM due to all the additional moving parts, but burns fuel more efficiently (since almost all of the exhaust gases have been expended on the piston's exhaust upstroke) and generates more torque than a comparably-displaced two-stroke engine.
All of the above is in the context of aircraft engines--there might be differences when applied to motorcycle engines, though.
I don't understand, where do you all learn about these things. If you know of a good bike magazine, can recommend? I think as long as they are all engines using 2 stroke cycles, there should be few disparitie, air craft or bikes.
Apparently there are 6 stroke engines as well. But don't explain it yet because it's getting too cheem for me.
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Originally posted by the Bear:
wah.. learn to ride a bicycle first.. really...
you'll need that skill..
anyway, i'm going to sleep.. good luck with your lessons..
goodnight everyone
No need lah. It's easier to balance on a bike than it is on a bicycle.
Nites dude! -
buanging from a bicycle would be less damaging to the body and the bank account than buanging from a motorbike I think .... -_-
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Originally posted by soleachip:
I don't understand, where do you all learn about these things. If you know of a good bike magazine, can recommend? I think as long as they are all engines using 2 stroke cycles, there should be few disparitie, air craft or bikes.
Apparently there are 6 stroke engines as well. But don't explain it yet because it's getting too cheem for me.
The operating principles behind two- and four-stroke engines are actually very intuitive and easy to understand. You should be able to find all the information you need on the net. Wikipedia would be a good start, for example.
(I don't claim to be an expert on the subject, but I've worked on a variety of aircraft engines at our local flying club.)
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Originally posted by Fatum:
buanging from a bicycle would be less damaging to the body and the bank account than buanging from a motorbike I think .... -_-
nope. buang bike in school is free of charge due to insurance coverage no?
just my warped theory
there are many local motorcyclists who pass their 2B first before learning and picking up bicycling, so i think not a big issue bah, at most they'll just laugh at me in class.
i just think the dynamics of bikes are very different from cars, and kindda cool!
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Originally posted by Meia Gisborn:
The operating principles behind two- and four-stroke engines are actually very intuitive and easy to understand. You should be able to find all the information you need on the net. Wikipedia would be a good start, for example.
(I don't claim to be an expert on the subject, but I've worked on a variety of aircraft engines at our local flying club.)
i'm at wiki already but still it's very confusing. will need to read up more to understand. i'm off to bed soon but one last qn since you're a mechanic.
You're traveling along a deserted road and discover a flat tyre.
You're just about to replace it with the spare when you realise the 4 bolts are missing.
What will you do next so you can proceed to the nearest repair shop?
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take one each from the other three wheels and drive very slowly ...
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Originally posted by soleachip:
i'm at wiki already but still it's very confusing. will need to read up more to understand. i'm off to bed soon but one last qn since you're a mechanic.
You're traveling along a deserted road and discover a flat tyre.
You're just about to replace it with the spare when you realise the 4 bolts are missing.
What will you do next so you can proceed to the nearest repair shop?
call for help ?
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Originally posted by soleachip:
i'm at wiki already but still it's very confusing. will need to read up more to understand. i'm off to bed soon but one last qn since you're a mechanic.
You're traveling along a deserted road and discover a flat tyre.
You're just about to replace it with the spare when you realise the 4 bolts are missing.
What will you do next so you can proceed to the nearest repair shop?
How did the wheel with the flat tire stay on the axle if the four bolts were missing in the first place???
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Originally posted by Meia Gisborn:
How did the wheel with the flat tire stay on the axle if the four bolts were missing in the first place???fertile imagination?
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The bulb in my desk lamp just blew. I just changed it a few weeks ago!
And I don't have any spares right now.
Oh well.... I might as well call it a night since I can't get any work done.
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Originally posted by fudgester:
The bulb in my desk lamp just blew. I just changed it a few weeks ago!
And I don't have any spares right now.
Oh well.... I might as well call it a night since I can't get any work done.
me thinks you should stick to conventional candle lamps given ur relationship with electronics..
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Originally posted by fudgester:
The bulb in my desk lamp just blew. I just changed it a few weeks ago!
And I don't have any spares right now.
Oh well.... I might as well call it a night since I can't get any work done.
*bites off my comments .....
*sniggers ....
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Wow fudgie u seem to be full of static >.>
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why is chip moving on to motorbikes?she got tired of parking tickets on her car?