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Can anyone shed some light on the concept of torque multiplcation through an automatic transmission torque converter? The best I can come up with is the idea that torque multiplication is proportional to the ratio of flexplate RPM and input shaft RPM much like it would be for a chain or a set...

The only option with multi throttles is an Airflow Meter setup. On most aspirated cars they can get away with it by tuning the engine off throttle position instead of MAP or Airflow meter. This is exactly why you will see a lot of GTR skylines fitted with aftermarket Airflow meters or even...

Thanks Greg! I am still interested to know whether there is an effect on traction caused by pinion angle? Is this just a Myth?

I am led to believe it helps traction. I remember hearing some Dirt track Speedway, "Super Sedan" racers talking about it once. They were going on about mid corner drive and maybe they should do something with pinion angle.

What is the significance of the pinion angle in a four link live axle setup? I understand that floor clearances may be an issue in some road cars but I suspect there is a direct effect on the vehicles handling. The particular example I am working on which has bought this question to my...

In one of my previous jobs I did a lot of work with service body designs. I always used round reliefs generally because we had round punch tools in various sizes. I awalys tried to use the smallest relief possible and increased it if the resulting part was difficult to fold or was creating a...

Another thing that will come in handy is corner relieving. If the parts are being punched or laser cut hit the corner with a 3mm punch or hole. this is for edge to edge welded parts. The hole gets welded over and you don't end up with a sharp point that needs to be sanded off.

The easiest way is to draw the profile of what you want to bend. Give it square inside corners and then use you inside edge dimensions to get your layout. Essentially this is the same as using a 0 bend allowance. I reasearched the bend allowance and k-factor and spent ages measuring the...

If you can get your hands on Solidwork, inventor, pro engineer of similar then you will be able to similate any suspension setup nicely. You will probably find it quicker to learn susprog than one of these packages anyway!

Just wanted to say that is the best explaination of Roll Centre characteristics I have ever read. I have played with roll centres on a couple of my cars and have learned the results of the changes I made hence I had an intuitive understanding of what I had done and why it worked. Your...