Recent content by anhtho

Thanks insightful. I have searched myself and find that some Honda car during the 1980s used programmable carburetor.

Hi all, I just hear from a friend that in carburetored cars there are still O2 sensors (not all cars). I not sure the purpose of O2 sensor in this case. Could anyone help ? Thanks

In some motorbike engines, I notice there are two springs (inner and outer) for a valve. Why do they have to make it two ? Thanks

At normal conditions, say at atmospheric pressure, gas molecules still collide with each other frequently, so they 'link' together via collision, so that sound can travel. In vacuum or nearly vacuum condition, the collision number is small, then sound can not travel.

Some people park their cars with wheels turned and other do not. I myself like the straight wheels while parking. But technically, are there any problems if I park not straight ?

Hi all, I have this question, and hope you could help me to solve. There are two engines with the same displacement (say 250cc). One with smaller piston and the other bigger. Of course the first one will move longer. If everything else is the same or similar, generally, which engine is...

Hi nsaspook, I agree that it depends on many other factors, and Ah capacity is the most important. Thanks for the documents.

I just think that the higher the capacity, the bigger the electrode plates, so the internal resistance should be smaller.

Thanks Crosstalk for replying me. You said 20 mOhms for a typical lead acid battery. But what is the typical ? 20, 40 or 100Ah ? (12V).

Anyone knows what is the approx. internal resistance of a lead battery, say, 12V, 20Ah. Thanks

I have a different situation. No matter how late I go to bed, I always get up nearly the same time. Sometimes, I have party late and go to bed about 2 - 3 AM, but get up at 7 and cannot go to bad again, although it's a Sunday. Do I have any problem?

We have a long debate on which transmission can accelerate faster. My idea is manual and I drive a manual, and I could pass other AT car (same capacity) quite easily. But some say automatic because the auto shift is very short. How about your idea?