To use a positional tolerance to "C" wouldn't I need a dimension? The slot and hole are coaxial so the dimension would be zero. I'm not sure how to do what you are suggesting. You are correct about A and C working in the same direction but A is to locate the hole (C) and I need to locate the...
I need to locate a slot to a hole whats the best way to do it. The hole is datum C but the axis is perpendicular to the slot. Is it reasonable to do what I've done in the attached image?
http://files.engineering.com/getfile.aspx?folder=e54b8929-af4e-47fd-beb3-72e669a27f5d&file=gd&t.JPG
I’m used to doing DOE’s in excel and curious how minitab calculates the following
1) How do they calculate the p values for the main and interaction effects?
2) How do they calculate the values for tin interaction? I understand how they would do A*B, B*C, A*C but how do they do A*B*C ?
@Biginch In my first post the fit from the first 5 points do not fit the remaining 21 points. Hence r^2 values albeit good for both may not predict representation to the true population. The 5 vs 21 is arbitrary. If we imagine you do a test and have X samples how do you know that that...
@IRstuff Good point about the polynomial. Since MSE is SSE/n and SSE is used to calculate your correlation coefficient r^2, is r^2 not a suitable proxy for MSE? I can potentially see that value going up or down as n increases. MSE for the 21 points (0.03)is higher than the 5 points...
@BigInch How is one to prevent themselves from forcing "inadequate data into reinforcing unsubstantiated foregone conclusions"? I have a good fit with my Weibull but so if you find yourself with only 5 data points how can you gauge how many more samples you will need?
@IRstuff or anyone that would like to answer. I'm not following how/why you would use your MSE. Isn't that just the same as the r^2? The larger that r^2 gets the smaller your SSE and MSE will get just that I have a relative scale 0-1 for r^2.
Using MSE are you suggested I get 0.009 and I...
One of the advantages of the Weibull is you can form a distribution with a much smaller sample size than say a histogram.
I experimented with using only the first 5 data points from a sample set of 26 to do a Weibull analysis. The first 5 points fit a 2 parameter Weibull and gave an R^2...
Cierva according to SKF CN is for normal use http://www.skf.com/us/products/bearings-units-housings/roller-bearings/principles/bearing-specifics/bearing-internal-clearance/index.html . The OE bearing was only marked as 6003 hence I went with a CN clearance. I know that you can have failures...
I did not see any discoloration in the race pieces. The differential heat theory sounds plausible but it's in an oil bath so I would suspect uniform heat across the bearing assembly. I was thinking incorrect temper. Does anyone know how hard you can get 52100 after quench?
The really isn't much to tell from the races since they are scoured. As for Chinese bearings even SKF, INA etc are all manufacturing in China albeit this is a brand I have never used before. In my forensic exercise I discovered it was a CN clearance not sure what OE is but I suspect it might...
I recently replaced the bearing on my motocross bike (Suzuki RM 125) The bearing has 9 hours of use on it and it blew up. The bearing is in the transmission and supports the left hand side of the counter shaft. It's a wet clutch and the oil that lubricates the clutch plates also lubricates...
Yeah Dupont has a guide on choosing the right screw Link where they mention flexural moduls but I also found another reference on the internet that said to use the pitch diameter of the screw and the pilot hole size. That seems to make the most sense to me.
