Aluminum rod reduces shock load to crank
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Aluminum rod reduces shock load to crank
Ok,does an aluminum rod really transmit less shock to the crankshaft compared to a steel rod? Performance aluminum rod manufacturers make this claim.Yes,I know aluminum rods have a short life span.
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Re: Aluminum rod reduces shock load to crank
The nitro guys claim they're an absolute necessity for that very reason. More realistic combinations, I'm not sure either. Seem likely it could buffer the bottom end during detonation.
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Re: Aluminum rod reduces shock load to crank
Yes it does......Truckedup wrote:Ok,does an aluminum rod really transmit less shock to the crankshaft compared to a steel rod? Performance aluminum rod manufacturers make this claim.Yes,I know aluminum rods have a short life span.
It also soaks up work to a certain extent. Work compressing the rod that could be used to turn the wheels.
Only needed, recomended, advantagous when serious cylinder pressures are present.
Re: Aluminum rod reduces shock load to crank
Taking it one step more.....Suppose you have an engine that's breaking crankshafts with steel rods.Lets say this engine is not an alcohol or nitro fuel engine.. Would the crank last longer with aluminum rods? Yes,many variables,just a theory question.
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Re: Aluminum rod reduces shock load to crank
I would fix the reason it is breaking cranks!!Truckedup wrote:Taking it one step more.....Suppose you have an engine that's breaking crankshafts with steel rods.Lets say this engine is not an alcohol or nitro fuel engine.. Would the crank last longer with aluminum rods? Yes,many variables,just a theory question.
Tune up, crank quality/design for application ect......
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Re: Aluminum rod reduces shock load to crank
There are too many variables. Moreover, merely stating "variables" tends to imply that higher order combinations of variables (and variables themselves) can be directly equated. Look at how Transcendental numbers differ fundamentally from numbers that are algebraic http://en.wikipedia.org/wiki/Transcendental_numberTruckedup wrote:Taking it one step more.....Suppose you have an engine that's breaking crankshafts with steel rods.Lets say this engine is not an alcohol or nitro fuel engine.. Would the crank last longer with aluminum rods? Yes,many variables,just a theory question.
You need to guard against the fallacy of equivocation.
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Re: Aluminum rod reduces shock load to crank
Really???????Kevin Johnson wrote:There are too many variables. Moreover, merely stating "variables" tends to imply that higher order combinations of variables (and variables themselves) can be directly equated. Look at how Transcendental numbers differ fundamentally from numbers that are algebraic http://en.wikipedia.org/wiki/Transcendental_numberTruckedup wrote:Taking it one step more.....Suppose you have an engine that's breaking crankshafts with steel rods.Lets say this engine is not an alcohol or nitro fuel engine.. Would the crank last longer with aluminum rods? Yes,many variables,just a theory question.
You need to guard against the fallacy of equivocation.
Why can't you just give your opinion on the subject instead of trying to turn EVERY topic into a science project?
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Re: Aluminum rod reduces shock load to crank
Can you run a lesser crank and block longer at very high loading and or rpm with an aluminum rod? Absolutely. Bearing life will be better too.
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Re: Aluminum rod reduces shock load to crank
On a current Nitro car with a competitive tune the force on the rod is enough to deform the rod in a way that spreads the bore.
Presently there is only one rod design and material that is holding up for aggressive tune-ups.
The material and forging process is patented so only one supplier can make them for now.
http://www.alanjohnsonperformance.com/
One of the few times that a patent had any significant impact on a technology in drag racing.
If/when power levels increase it may be nessesary to find an alternative rod design and or material.
Presently there is only one rod design and material that is holding up for aggressive tune-ups.
The material and forging process is patented so only one supplier can make them for now.
http://www.alanjohnsonperformance.com/
One of the few times that a patent had any significant impact on a technology in drag racing.
If/when power levels increase it may be nessesary to find an alternative rod design and or material.
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Re: Aluminum rod reduces shock load to crank
Jon,
I only see Brooks and C&A on AJs site. Was there something else you wanted us to see?
Kevin.
STOP IT
I only see Brooks and C&A on AJs site. Was there something else you wanted us to see?
Kevin.
STOP IT
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Re: Aluminum rod reduces shock load to crank
Warp Speed wrote:Really???????Kevin Johnson wrote:There are too many variables. Moreover, merely stating "variables" tends to imply that higher order combinations of variables (and variables themselves) can be directly equated. Look at how Transcendental numbers differ fundamentally from numbers that are algebraic http://en.wikipedia.org/wiki/Transcendental_numberTruckedup wrote:Taking it one step more.....Suppose you have an engine that's breaking crankshafts with steel rods.Lets say this engine is not an alcohol or nitro fuel engine.. Would the crank last longer with aluminum rods? Yes,many variables,just a theory question.
You need to guard against the fallacy of equivocation.
Why can't you just give your opinion on the subject instead of trying to turn EVERY topic into a science project?
I think there is an ignore function with the board. I do not think you or anyone else needs my permission to use it.
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Re: Aluminum rod reduces shock load to crank
I'll take a picture of one of the rods when I get home and post it.Dave Koehler wrote:Jon,
I only see Brooks and C&A on AJs site. Was there something else you wanted us to see?
Kevin.
STOP IT
It might be that only some teams are allowed to buy them.
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Re: Aluminum rod reduces shock load to crank
Yep.......gotta be on "the deal" !SchmidtMotorWorks wrote:I'll take a picture of one of the rods when I get home and post it.Dave Koehler wrote:Jon,
I only see Brooks and C&A on AJs site. Was there something else you wanted us to see?
Kevin.
STOP IT
It might be that only some teams are allowed to buy them.
Re: Aluminum rod reduces shock load to crank
Is the rod handling compression forces really key or are other rods on the downstroke acting to dampen by acting as extension springs?
The idea of the rod being so useful in compression seems counterintuative to me, if shock damping under power compression is key then why aren't the wrist pin and piston design considered more?
The idea of the rod being so useful in compression seems counterintuative to me, if shock damping under power compression is key then why aren't the wrist pin and piston design considered more?
Mike S.
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Re: Aluminum rod reduces shock load to crank
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