Bearing speed

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Bearing speed

Post  away on April 2nd 2015, 3:52 pm

I have heard this topic brought up but have never heard a good explaination.

So can anyone explain this? How is it determined? How to change it? Speed it up slow it down?

How would this topic relate to our stroker combos?
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Re: Bearing speed

Post  dfree383 on April 2nd 2015, 4:11 pm

It's not rocket science..... You are not going to adjust it or change it unless you change the diameters of the bearing surfaces on the crank and do the same for the block and rods. In other words to reduce the speeds you need to get all new stuff.

It is what it is with the parts that you have.

I wouldn't get hung up on it.
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Re: Bearing speed

Post  away on April 2nd 2015, 4:17 pm

yes I understang that much about it (crank rod sizes etc) but why is people even worried about it?

When would it be a concern.......9000 rpm for a long time etc?
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Re: Bearing speed

Post  dfree383 on April 2nd 2015, 5:08 pm

away wrote:yes I understang that much about it (crank rod sizes etc) but why is people even worried about it?

When would it be a concern.......9000 rpm for a long time etc?

Yes it can cause issues with bearing life at high rpm and prolonged durations. But their are also issued when you go too far the other way with part living due to strength. So it's a balancing act of sorts if you have a choice.
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Re: Bearing speed

Post  jones on April 3rd 2015, 12:13 am

Its free HP if you design everything correctly from the beginning. (Being that everything is custom made to begin with)

OR

The engine is being built to compete in a naturally aspirated class where you do everything you can to get 1hp.


F1 engines are so small for similar reasons. Over all less friction, lighter rotating mass etc, they can turn the engines high rpms because thats just more power from the given mass.

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