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Post by atlasbuster on Dec 28, 2007 0:13:18 GMT -6
I saw the other post about the best axle type for oil lubricants. However, I am prohibited from using oil lubes. I have heard that there is some data to suggest that grooved axles may actually slow down cars when using graphite. Does anyone have any solid information? Grooved or ungrooved?  atlasbuster |
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Post by Barga Racing on Dec 28, 2007 20:33:37 GMT -6
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Post by slkrnsntracing on Dec 28, 2007 20:46:31 GMT -6
Bob, Would you have Robbie call me and tell me what the tests proved? Thanks Phil |
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Post by Parrot Racing on Dec 29, 2007 9:07:20 GMT -6
Nice work Bob. So if I am reading this correctly, the best avg times were achieved with a single-groove, mother's and micro-mesh polished axle, and a bsa wheel with a polished hub using Nyoil.
And for the graphite, the axle polished with mother's and a threaded hub.
I have tried just about every graphite, now I think I will try an oil. Anyone have any opinions on Krytox vs. Nyoil?
Enrico-Parrot Racing
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Post by sporty on Dec 29, 2007 13:45:16 GMT -6
The more I look at Stan and Bob's info, I also realize alot was taken into trying to do a repeatable test.
But I have questions, how was the rope/ string wound up ? that alone can deviate testing consistancy. Just by how it'swinded up.
I would recommend a small r/c motor with a clutch or on/off switch used to do that part for the testing.
I have seen small motors for winding small coils.
How the weight is dropped,angle or position at which the weight was at when dropped and how it was dropped can increase or decrease spin time also.
However, it's still a pretty good test and alot went into to trying to insure a equal and fair testing process.
Sporty
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Post by atlasbuster on Dec 30, 2007 16:24:55 GMT -6
What is a threaded hub? I sort of understand it from the description in the experiment but would like to know how to do it and what I need to do it. Is this the same as hub coning? Thanks for the info.
atlasbuster.
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Post by Barga Racing on Dec 31, 2007 1:30:02 GMT -6
Bob, Would you have Robbie call me and tell me what the tests proved? Thanks Phil, He wouldn't know, he has never read the results ;D Phil |
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Post by Barga Racing on Dec 31, 2007 1:32:35 GMT -6
Nice work Bob. So if I am reading this correctly, the best avg times were achieved with a single-groove, mother's and micro-mesh polished axle, and a bsa wheel with a polished hub using Nyoil. And for the graphite, the axle polished with mother's and a threaded hub. Enrico-Parrot Racing That would be correct. Although in actual track testing I have not always found that to be the case. But there are several other things that go into track testing, the most important thing being alignment. This test was developed to try to eliminate all variables of track testing and therefore only have variable of lube and application of such. |
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Post by Barga Racing on Dec 31, 2007 1:39:12 GMT -6
The more I look at Stan and Bob's info, I also realize alot was taken into trying to do a repeatable test. But I have questions, how was the rope/ string wound up ? that alone can deviate testing consistancy. Just by how it'swinded up. How the weight is dropped,angle or position at which the weight was at when dropped and how it was dropped can increase or decrease spin time also. However, it's still a pretty good test and alot went into to trying to insure a equal and fair testing process. Sporty The string was wound around the ring by hand while holding the assembly from turning with my other hand. I did it this way to eliminate any excess lube breakdown from winding the assembly backwards to take up the string. I think this way is the best possible way without inducing any other variables into equation. Weight was wound all the way up against the eyelet that string ran through. This insured the exact same drop distance each and everytime. The aforementioned eyelet also controlled the run off angle of the string to be the exact same everytime. I believe those variables were effectively controlled. I let my finger off the assembly and started the stopwatch with my other hand at the same time. I then stopped the stopwatch when the assembly came to a complete stop. |
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