safety wire

General engine tech -- Drag Racing to Circle Track

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Kevin Johnson
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Re: safety wire

Post by Kevin Johnson »

https://www.google.com/search?q=why+does+gas+viscosity+increase+with+temperature wrote:Physical causes
Since the momentum transfer is caused by free motion of gas molecules between collisions, increasing thermal agitation of the molecules results in a larger viscosity. Hence, gaseous viscosity increases with temperature.
The boundary layer at the pipe wall would become more viscous and effectively reduce the cross-sectional area of the pipe.

As always, test, test, test. You cannot make bricks without clay.
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Bill Chase
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Re: safety wire

Post by Bill Chase »

"I assume by your name this was at a drag strip. with proper cool down between rounds, timing maxed out for performance etc and it was a 1/8-1/4 mile pass where the car was faster, or it was faster on a chassis dyno?"

should have read...I assume by your name this was at a drag strip. with proper cool down between rounds, timing maxed out for performance etc and it was a 1/8-1/4 mile pass where the car was faster, or it was just more power on a chassis dyno?
Bill Chase
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Re: safety wire

Post by Bill Chase »

Kevin Johnson wrote: Sun Dec 27, 2020 7:59 am
https://www.google.com/search?q=why+does+gas+viscosity+increase+with+temperature wrote:Physical causes
Since the momentum transfer is caused by free motion of gas molecules between collisions, increasing thermal agitation of the molecules results in a larger viscosity. Hence, gaseous viscosity increases with temperature.
The boundary layer at the pipe wall would become more viscous and effectively reduce the cross-sectional area of the pipe.

As always, test, test, test. You cannot make bricks without clay.
So you do reach a point of too much heat being a bad thing and causing the pulses to slow down. thanks, so as with everything else the answer is.. "maybe, it depends, test and find what works best for your combination." gotchya!
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